Jobs Board

Relay is building the web3 messenger. We are looking for talented and motivated front-end engineers of all experience levels. Relay engineers thrive in a high-growth, high-velocity environment where success depends on the highest levels of communication, code quality, and pragmatism. Each engineer must be able to individually own a slice of the Relay codebase while also maintaining a working knowledge of others. Accordingly, Relay is looking for team members who are not only highly-skilled individual contributors but also strong collaborators and communicators. \n Responsibilities Carefully implement critical UI components, shared functionality, and certain subsystems (like monitoring, testing, validation, etc) Rapidly implement functional UI elements from design mocks and workflow diagrams, with an eye toward correctness and readability. “Set the tone” in terms of craftsmanship standards and code quality Active/thoughtful participation in discussion surrounding ticket specification, design review, etc. Participate in active, intentional, and thorough code reviews. Requirements 5+ years of experience building production React applications 1 year of TypeScript experience Minimum 3 years working with any strongly typed programming language Very strong verbal and written communication skills. Very strong understanding of idiomatic UI implementation patterns Deep understanding of JavaScript and TypeScript Strong understanding of the browser programming environment (the DOM, data-fetching APIs, storage APIs, sessions, HTTP, caching, etc). \n Relay's benefits include unlimited and encouraged time off, 100% company-paid medical, dental, & vision for you and your dependents, 2-3x/week company lunches at local restaurants, and for remote employees: up to $2,000 USD home office setup stipend (all benefits are subject to applicable taxes and based on eligibility).

Wealthsimple is on a mission to help everyone achieve financial freedom by reimagining what it means to manage your money. Using smart technology, we take financial services that are often confusing, opaque and expensive and make them transparent and low-cost for everyone. We’re the largest fintech company in Canada, with over 4 million users who trust us with more than $80 billion in assets. Our teams ship often and make an impact with groundbreaking ideas. We're looking for talented people who keep it simple and value collaboration and humility as we continue to create inclusive and high-performing teams where people can be inspired to do their best work. About the Crypto Team The Crypto team is at the forefront of Wealthsimple's expansion into decentralized finance, working to democratize access to crypto for millions of Canadians. We're a passionate group of crypto-native engineers and product experts building the next generation of non-custodial crypto products. Our team combines Wealthsimple's commitment to simplicity and transparency with cutting-edge blockchain technology to create secure, user-friendly crypto experiences that put users in full control of their digital assets. About the Senior Software Developer Role As a Senior Crypto Software Developer, you'll be instrumental in building Wealthsimple's non-custodial crypto infrastructure from the ground up. You'll work at the intersection of traditional fintech and decentralized protocols, helping to bridge the gap between complex blockchain technology and intuitive user experiences. This role offers the unique opportunity to shape how over a million crypto clients interact with decentralized finance while maintaining Wealthsimple's high standards for security, reliability, and user experience. \n In this role, you’ll have the opportunity to Build and architect new on-chain non-custodial products that give users full control over their crypto assets Design and implement integrations with leading DEXs, DeFi protocols, and wallet providers Enhance our existing custodial crypto offerings by expanding asset selection and improving product functionality Work with cutting-edge blockchain technology and contribute to the evolution of decentralized finance Collaborate with cross-functional teams to deliver seamless crypto experiences to over a million users Help establish technical standards and best practices for crypto development at Wealthsimple What you’ll bring Proven experience working in the crypto/blockchain industry with hands-on development experience Deep familiarity with integrating DEXs, wallet providers, and smart contract protocols Strong understanding of blockchain fundamentals, including transaction mechanics, gas optimization, and security considerations Experience with Ethereum and other major blockchain networks, including Layer 2 solutions Working knowledge of smart contract development and interaction (EVM/SVM) Knowledge of DeFi protocols, AMMs, and decentralized exchange mechanisms Understanding of crypto security best practices, including key management and multi-signature implementations Experience with Web3 libraries and tools (ethers.js, web3.js, etc.) Solid background in backend development with languages like Ruby on Rails, Java, Kotlin, or Python Strong problem-solving skills and ability to navigate the rapidly evolving crypto landscape Passion for decentralized finance and its potential to democratize financial services \n Why Wealthsimple? 🤑 Competitive salary with top-tier health benefits and life insurance 📈 Retirement savings matching plan using Wealthsimple for Business 🌴 20 vacation days per year and unlimited sick and mental health days 📚 Up to $1,500 per year towards wellness and professional development budgets respectively 🛫 90 days away program: Employees can work internationally in eligible countries for up to 90 days per calendar year 🌎 A wide variety of peer and company-led Employee Resource Groups (ie. Rainbow, Women of Wealthsimple, Black @ WS) 💖 Company-wide wellness days off scheduled throughout the year We’re a remote-first team, with over 1,000 employees coast to coast in North America. Be a part of our Canadian success story and help shape the financial future of millions — join us! Read our Culture Manual and learn more about how we work. Technology & Innovation at Wealthsimple We believe the future belongs to those who innovate boldly. At Wealthsimple, every team member is expected to lean into new technologies, including AI, and tooling to rethink how we work, solve problems faster, and create even greater value. We're looking for people who are not just comfortable with change but energized by it. Our commitment is to build a company that evolves at the pace of the world around us, and we want you to help lead that future. DEI Statement At Wealthsimple, we are building products for a diverse world and we need a diverse team to do that successfully. We strongly encourage applications from everyone regardless of race, religion, colour, national origin, gender, sexual orientation, age, marital status, or disability status. Accessibility Statement Wealthsimple provides an accessible candidate experience. If you need any accommodations or adjustments throughout the interview process and beyond, please let us know, and we will work with you to provide the necessary support and make reasonable accommodations to facilitate your participation. We are continuously working to improve our accessibility practices and welcome any feedback or suggestions on how we can better accommodate candidates with accessibility needs.

Who is Serotonin Serotonin is the top go to market firm for transformative technologies, specializing in marketing, strategy, recruiting, and legal services. With a global team of 90 across 15 countries, Serotonin has supported over 300 clients in consumer tech, web3 infrastructure, digital assets, venture capital, and AI since its launch in 2020. Delivering end-to-end go-to-market solutions across all major marketing channels - including public relations, growth marketing, on-chain analytics, content, research, social, and design - Serotonin accelerates global innovation. At the core of our business is the Serotonin Platform, serving as a central nucleus for the web3 ecosystem, connecting builders and founders with essential resources to drive business growth. About the Role We're looking for a versatile data professional who combines strong analytical and data science capabilities with the engineering skills to build and maintain the infrastructure behind those analyses. This is a hybrid role perfect for someone who loves both discovering insights and building scalable systems to deliver them. You'll work across the entire data stack - from pipeline development to statistical modeling. \n Responsibilities Build and maintain data pipelines that power both ad-hoc analyses and production dashboards Develop statistical models and data science solutions while also implementing the infrastructure to deploy them Create self-serve analytics tools and datasets that empower stakeholders across the organization Design experiments and perform statistical analyses to measure product and marketing initiatives Build data models in our warehouse that balance analytical flexibility with performance Partner directly with product, marketing, and leadership teams to identify opportunities and measure impact Own the full lifecycle of data products - from initial exploration to production deployment Requirements: Core Technical Skills Strong experience with modern data stack tools (e.g., dbt, Airflow/Dagster, Snowflake, BigQuery, Redshift, or similar) Proven ability to design and manage ETL pipelines and database architectures Advanced SQL skills and high proficiency in Python for both data analysis and engineering Understanding of data modeling principles (Kimball, Data Vault, or similar) Experience with cloud data platforms (AWS, GCP, or Azure) Requirements: Analytical & Data Science Expertise Strong statistical analysis skills with hands-on experience using Python data science stack (pandas, NumPy, scikit-learn) Experience with A/B testing, causal inference, and experimental design Ability to communicate complex findings to non-technical stakeholders Track record of using data to influence business strategy Requirements: Blockchain & Web3 Experience Hands-on experience with blockchain data extraction, transformation, and analysis Understanding of EVM concepts (transactions, events, smart contracts) and/or non-EVM ecosystems Ability to work with on-chain data to derive actionable insights Bonus Points Experience with marketing analytics and attribution modeling Familiarity with data from providers like Dune, Arkham, GoldSky, Flipside, or similar Previous experience in data roles within blockchain/Web3 organizations Experience with data visualization tools (Tableau, Looker, or similar) This position is ideal for someone who... Gets excited about both building robust data infrastructure AND discovering insights Wants ownership over the entire data value chain Thrives in environments where they can wear multiple hats Values being able to see their analyses through to production impact Benefits Competitive Salary Health Insurance - (US Only) 401(k) - (US Only) Remote Work Environment Maternity/Paternity Leave

About Story Story is a purpose-built Layer 1 blockchain designed specifically for intellectual property. With Story, creators can register IP on-chain and set usage terms in seconds—dramatically lowering the barrier of today’s complex and antiquated IP legal systems. For example, instead of requiring lawyers and months of negotiation, you could enforce terms like “you owe me 50% of commercial revenue if you use my IP” through the protocol itself. By making IP programmable, Story transforms intellectual property into a transparent, decentralized, global repository—where AI agents, developers, and humans alike can transact, license, and monetize IP with a simple API call. In February 2025, we launched the Story mainnet, and our native $IP token is now listed on major global exchanges. As we build out the next era of programmable IP infrastructure, we’re looking for a Senior Product Manager to drive protocol innovation and ecosystem adoption. The Role As Senior Product Manager for Blockchain & Protocol, you’ll own the product strategy, roadmap, and execution for our core Layer 1, proof-of-concept protocols, and developer-facing APIs/SDKs. This is a highly technical role at the intersection of cryptography, distributed systems, and developer experience. You’ll work closely with executive team, researchers, engineers, and the global ecosystem to ship new cryptographic primitives, scalability features, and developer-first infra—while ensuring Story remains secure, performant, and aligned with broader blockchain trends. \n What You'll Do: Define and own the roadmap and execution plan of blockchain, protocol & infra roadmap across consensus, execution, smart contract, and developer surfaces. Ship cryptographic and protocol features and releases (e.g., DKG, ZK integrations, rollup, scaling solutions). Improve security, upgradeability, performance, decentralization of the core infrastructure. Lead both internal and external cross-functional communication with researchers, engineers, ecosystem partners, and open-source communities. Align Story with external roadmaps (Ethereum, Cosmos, Rollup, DA/storage trends). Who You Are: Hold a Bachelor’s, Master’s, or Ph.D. in Computer Science, Electrical Engineering, Mathematics, or a related field from a top university. 5+ years of product management experience in infrastructure or platform products, with at least 2+ years in blockchain (L1/L2, smart contracts). Deep technical fluency in blockchain, cryptography, and smart contract standards. Proven ability to lead complex, technical, cross-functional initiatives from strategy through execution. Exceptional communicator, able to engage effectively with executives, engineering leadership, design, ecosystem partners, and the open-source community. Highly self-driven, with a passion for blockchain technology and accelerating ecosystem adoption. Nice to Have Hands-on experience in the Ethereum or Cosmos ecosystems. Prior work on L1/L2 protocols, smart contract platforms, or infrastructure services.

At Offchain Labs, we aren’t just building products: we’re leading a movement. As pioneers in blockchain scalability and security, we're at the forefront of transforming how the world interacts with decentralized applications. We're laying the foundation that will define the next generation of digital commerce, governance, and human interaction. This involves tackling real-world challenges that come with scaling blockchain technology, without compromising on its core principles: decentralization, security and transparency. At the center of this vision is our people. Our team is made up of thinkers and doers that embrace new challenges and seek solutions that push existing boundaries. If you’re energized by solving unprecedented problems, and believe in the role that decentralized systems will play in creating a more equitable digital future, then we want to hear from you. Why Offchain Labs? Offchain Labs is setting the pace for the entire Ethereum ecosystem. We built the Arbitrum stack that powers Arbitrum One, the most widely adopted Ethereum scaling solution that exists today. Arbitrum’s ecosystem is undergoing tremendous growth with hundreds of projects and dApps on Arbitrum One today. Over 100 different teams have used Offchain Labs technology to build their own Arbitrum chains. Major players in the space, Robinhood, BlackRock, Ethena Labs, Securitize, Aave, and Apechain are all using the Arbitrum stack. Arbitrum’s thriving ecosystem wouldn’t exist without our advanced technology stack. Arbitrum, Prysm, ZeroDev. These aren’t just product names. These are tools that are actively reshaping what's possible on Ethereum and advancing its core infrastructure. To top it all off? We’re backed by $124 million in funding. We’ve demonstrated consistent execution with billions in secured value, thousands of supported projects, and infrastructure processing millions of transactions seamlessly. \n The Role: At Offchain Labs, we are looking to build Web3 solutions that cover the full stack, from wallet UX down to the chain itself. As a Senior Backend Engineer, you will develop highly secure, stable, and scalable backends that power OCL’s products, as well as SDKs that interact with these backends. In particular, you will be building new enterprise services along with the ZeroDev team, who was recently acquired by Offchain Labs. These services will power the biggest Web3 and TradFi companies in the world such as Ethena and Robinhood. What you'll do: Work with the product and research team to design and implement novel systems that push the frontier of Web3. Develop backend services that are secure, stable, scalable, and scalable. Develop SDKs that interact with these backend services and blockchains. What you’ll need: Expertise in one or more backend languages, including TypeScript, Go, and Rust Expertise in TypeScript for SDK development Deep familiarity with Web3 concepts Deep familiarity with Web3 tooling such as Viem Experience working with smart contracts. You won’t be expected to develop new contracts, but it’s important that you can read and understand them. Strong ability to communicate both via text and verbally. Perks: Remote-first global workforce + NY office Annual company offsite + team onsites Professional reimbursement program (facilitates industry conference attendance, certifications, and more) Medical, dental & vision coverage (US + some other countries) 401k retirement plan + company match (US only) Wellness stipend Home office set up / ergonomic equipment program

About Celestia Labs Celestia is the modular blockchain powering unstoppable applications. We are pushing new paradigms for enabling a thriving ecosystem of applications which are performant, interoperable, secure and fully customizable. About the Team The Celestia Labs Team is remote first and highly distributed, with English as our primary language for communication. We are looking for self-starters that are excited about working in a fast-paced startup environment. We do not require team members to live in specific timezones, but much of the team lives and works in the European timezones. As such, team members are expected to be available as needed for team and company events that are scheduled. Generally these are scheduled between 1pm-6pm CET. About You Celestia Labs is looking for an elite Software Engineer to join the Celestia Protocol Team. You will be working on a highly technical team, operating across a cutting edge set of disciplines to support continued improvement of Celestia’s protocol software as we solve data availability for teams building whatever. This role will be of specific interest if working at the frontier of performance, scalability, storage, p2p networking and security in blockchain systems appeals to you with a heavy bias for shipping. \n Perks Flexible and remote work environment with multiple onsites each year Competitive salary and meaningful long-term compensation package Stipends for home office, coworking space, professional and personal growth 4 weeks annual vacation Being part of a collaborative, supportive team with opportunities for mentorship and professional growth 401k and healthcare coverage for US team members Responsibilities Own and ship key parts of Celestia Protocol - our data-availability layer that re-transmits block data to light clients and rollups. Design and optimize Go services for storage, P2P networking, and consensus, using transports such as TCP, QUIC, gRPC, and libp2p. Benchmark and tune performance by implementing metrics, tracing, and structured logging to identify regressions early. Drive code quality through design documentation, code reviews, and comprehensive technical documentation. Support external developers via GitHub and Discord by triaging issues and incorporating real-world feedback into product roadmap. Who You Are 7+ years of hands-on software engineering experience Expert-level Go proficiency, including concurrency patterns and performance profiling Strong understanding of networking & transport protocols (TCP, QUIC, gRPC, libp2p) and peer-to-peer architectures Proven experience scaling distributed or storage systems with focus on performance, reliability and data integrity Security-first mindset with knowledge of cryptography fundamentals and threat modeling Performance engineering expertise: CPU/memory profiling, GC tuning, latency analysis, and capacity planning Fluency with modern observability tools (Prometheus, OpenTelemetry, etc) Open-source contributions and excellent asynchronous communication skills

Binance is a leading global blockchain ecosystem behind the world’s largest cryptocurrency exchange by trading volume and registered users. We are trusted by over 280 million people in 100+ countries for our industry-leading security, user fund transparency, trading engine speed, deep liquidity, and an unmatched portfolio of digital-asset products. Binance offerings range from trading and finance to education, research, payments, institutional services, Web3 features, and more. We leverage the power of digital assets and blockchain to build an inclusive financial ecosystem to advance the freedom of money and improve financial access for people around the world. We are looking for a passionate and motivated Marketing Manager to lead our local market initiatives, drive community engagement, and promote our brand’s presence in the crypto space. This role combines strategic thinking with hands-on execution, blending digital and in-person efforts to foster a thriving community. You will be responsible for engaging with our audience, creating high-quality content, and supporting local events to drive brand awareness and user growth. \n Responsibilities: Community Building and Engagement: Foster a strong local community of crypto enthusiasts, traders, and influencers. Serve as the face of our brand in the community by actively engaging in conversations and forums, responding to inquiries, and nurturing relationships. Organize and manage local events, meetups, and online sessions to promote brand awareness and drive engagement. Social Media Management and Content Creation: Develop and implement a content calendar with engaging posts, tweets, and updates across various platforms (e.g., Twitter, Facebook, Instagram, Telegram, Discord).Create original, informative, and on-brand content that aligns with our mission, including articles, infographics, and videos. Monitor social media trends, hashtags, and emerging topics in crypto to incorporate relevant and timely content. Influencer and Partner Relations: Identify, recruit, and collaborate with local influencers, KOLs (Key Opinion Leaders), and community leaders to increase brand exposure. Develop partnerships with other crypto or blockchain-related brands, communities, and media to expand our reach. Ground-Level Market Activation: Plan and execute offline marketing initiatives, such as booths at local crypto events, sponsorships, and guerilla marketing campaigns. Distribute promotional materials, manage logistics, and handle on-site coordination for local events and activities. Market Insights and Analytics: Conduct research on local crypto market trends, competitors, and user behavior to tailor our marketing strategies. Track, analyze, and report on the effectiveness of local campaigns, social media metrics, and community feedback to inform future strategies. Customer Support Liaison: Act as the first point of contact for community-related issues, and work closely with customer support to resolve inquiries. Collect and relay community feedback to product and support teams to improve the user experience. Requirements: Bachelor’s degree in Marketing, Communications, Business, or related field (or equivalent experience). 5+ years of experience in crypto, fintech, or tech industry marketing, community building, or social media management. Understanding of the cryptocurrency ecosystem, market trends, and blockchain technology. Proven experience with social media platforms, digital content creation, and community management. Bilingual English/Thai is required to be able to coordinate with overseas partners and stakeholders. Strong project management skills, with the ability to manage multiple tasks in a fast-paced environment. Self-motivated, proactive, and able to work independently. Familiarity with social media and analytics tools (e.g., Hootsuite, Buffer, Google Analytics) Experience with graphic design or video editing tools (e.g., Canva, Adobe Creative Suite) would be a plus. Active participant in crypto communities, with a personal presence in relevant forums, Telegram groups, or Discord channels. Strong network within the local crypto scene or tech community. \n Why Binance • Shape the future with the world’s leading blockchain ecosystem • Collaborate with world-class talent in a user-centric global organization with a flat structure • Tackle unique, fast-paced projects with autonomy in an innovative environment • Thrive in a results-driven workplace with opportunities for career growth and continuous learning • Competitive salary and company benefits • Work-from-home arrangement (the arrangement may vary depending on the work nature of the business team) Binance is committed to being an equal opportunity employer. We believe that having a diverse workforce is fundamental to our success.

About Binance.US: Binance.US is America's home to buy, trade, and earn digital assets. As a licensed and regulated U.S. crypto platform, Binance.US offers some of the lowest fees in the industry and provides secure and reliable access to more than 160 of the world’s most popular cryptocurrencies. We’re on a mission to empower people to do more with their money. The new economy has arrived and we’re committed to helping everyone access the world of blockchain and crypto. To learn more about Binance.US, visit https://www.binance.us/. All roles supporting Binance.US are employed via BAM Management US Holdings Inc. or BAM Management Canada Holdings Inc. About This Role: The Senior Software Engineer, Backend is part of the Engineering team and reports to our Engineering Manager. As a Senior Software Engineer, you will be responsible for designing, building, and maintaining backend services that power Binance.US products. You will leverage your expertise in Java and distributed systems while collaborating with teams across product, security, compliance, and infrastructure to deliver scalable, secure, and performant solutions. This role also offers the opportunity to work on blockchain-related integrations, making it ideal for engineers interested in expanding their experience in crypto and decentralized technologies. Core Responsibilities: Design, build, and maintain high-throughput backend services and APIs in Java. Drive architecture discussions to enhance system scalability, resiliency, and performance. Prioritize security and compliance as core aspects of service design and delivery. Collaborate with product, security, DevOps, and compliance teams on cross-functional initiatives. Mentor engineers and lead by example with high engineering standards and best practices. Research and prototype blockchain integration opportunities (e.g., node syncing, client tooling). Advocate for maintainable, modern infrastructure informed by industry best practices. Preferred Skills/Experience: Bachelor’s or Master’s degree in Computer Science or related field. ~8 years of professional software engineering experience, or ~6 with an advanced degree. Strong proficiency in Java and experience with modern frameworks and distributed systems. Experience with performance optimization (e.g., low-latency systems, microservices). Knowledge of security and compliance best practices in financial or regulated contexts. Interest or hands-on experience in blockchain, crypto infrastructure, or decentralized systems. Strong collaboration and mentorship skills in a fast-moving, cross-functional environment. Salary: The starting pay range for this role is between CAD$175,000 - CAD$205,000 for all Canadian remote locations. The actual base pay will vary, and is dependent upon many factors, such as transferable skill sets, work experience, business needs, and market demands. The base pay range is subject to change. BAM Management US Holdings Inc. and BAM Management Canada Holdings Inc. are Equal Opportunity Employers. Our mission is to give Americans access to a broad array of digital assets, and we thrive because of the diverse and inclusive team that we are building. We do not discriminate against qualified employees or applicants because of race, color, religion, gender identity, sex, sexual preference, sexual identity, pregnancy, national origin, ancestry, citizenship, age, marital status, physical disability, mental disability, medical condition, military status, or any other characteristic protected by local law or ordinance. We comply with Federal Transparency in Coverage regulations by providing a link to machine readable files related to the health plans offered to our employees. The machine-readable files are formatted to allow researchers, regulators, and application developers to more easily access and analyze data including negotiated service rates, and out-of-network allowed amounts between health plans and healthcare providers.

About Katana The Katana Foundation is a nonprofit organization dedicated to creating the best DeFi experience for all types of users. Incubated by Polygon Labs and GSR, Katana Network is a purpose-built DeFi chain that aligns applications, users, and chain revenue to deliver deep liquidity and sustainable high yields. The network uses innovative mechanisms including VaultBridge, Chain-Owned Liquidity, and concentrated protocol deployment to maximize value for active users rather than extracting it. By taking an opinionated approach to DeFi infrastructure, Katana enables superior capital efficiency and user experience compared to traditional blockchain designs. Your Role As a Full Stack Engineer at Katana, you won’t just write code - you’ll shape the future of decentralized finance. We're looking for a seasoned builder with both frontend finesse and backend backbone to help bring our Core and Composable Apps to life. From sleek UIs to seamless blockchain integrations, you'll craft intuitive experiences that empower users to explore the DeFi frontier - without the friction. If you're a DeFi-native with a hunger for impact, and thrive in the breakneck rhythm of web3 innovation, this is your arena. Your Responsibilities Build the Future of DeFi: Develop, and maintain powerful web applications integrated with Katana’s cutting-edge Layer 2 blockchain infrastructure. Design with Empathy: Create responsive interfaces that help clarify complex DeFi concepts for end users. Engineer the Backbone: Drive the development of high-performance backend systems and APIs that power interactions with smart contracts, manage real-time blockchain data, and scale to meet growing user demand. Collaborate Across the Stack: Partner closely with protocol and smart contract engineers to bring DeFi primitives (AMMs, lending, farming, and more) to the frontend in seamless, elegant ways. Tame the Blockchain Firehose: Optimize data pipelines and application performance to handle high-throughput activity and real-time blockchain data. Secure the Edge: Implement wallet connections, authentication flows, and security best practices that users can trust. Stay on the Edge: Keep tabs on the latest developments in DeFi, Layer 2 scaling, and the ever-evolving web3 landscape - and bring those insights back to the product. What You'll Need Full-Stack Fluency: 4+ years of experience building full-stack web applications - from polished frontends to production-grade backends. Web3 Warrior: 4+ years of hands-on experience with blockchain protocols, smart contracts, or web3 dev tools, especially in DeFi contexts such as AMMs, lending protocols, and staking systems. Frontend Firepower: Expertise with modern JS frameworks like React, Next.js, or Vue.js. Backend Mastery: Comfortable with Node.js, REST APIs, microservices, and containerized stacks (Docker, Kubernetes). Database Dexterity: You speak fluent SQL (Postgres, MySQL) and NoSQL (MongoDB, Firestore). Smart Contract Savvy: Able to read Solidity, integrate EVM-based contracts, and understand core blockchain concepts. Team-First Mentality: Proven success in agile teams, with a passion for shipping fast and making data-driven decisions. Preferred Qualifications Hands-on knowledge of intent-based bridging, solver networks, and advanced bridging layers. Deep familiarity with liquidity protocols, yield optimization strategies, and the nuances of great DeFi UX. Performance-tuning wizardry and a security-first mindset. Clear communicator with a love for collaboration. Katana Perks Remote first global workforce Industry leading Medical, Dental and Vision health insurance* Company matching 401k with 3% match* $1,500 Home Office Set Up Allowance (life-time max) $200 Annual Book Allowance Program $75 Monthly internet or phone reimbursement Flexible Time Off 1 company wide wellness Friday day off per quarter Company issued laptop Egg freezing, mental health, and employee wellness benefits In certain countries medical, dental and vision is fully covered for employees & their dependents. This is country and plan specific. 401k is for United States employees only Katana is committed to a diverse and inclusive workplace and is an equal opportunity employer. We do not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status. Katana is committed to treating all people in a way that allows them to maintain their dignity and independence. We believe in integration and equal opportunity. Accommodations are available throughout the recruitment process and applicants with a disability may request to be accommodated throughout the recruitment process. We will work with all applicants to accommodate their individual accessibility needs. If you think you have what it takes, but don't necessarily meet every single point on the job description, please still get in touch. We'd love to have a chat and see if you could be a great fit.

DeFi Engineer Who We Are We are a cutting-edge DeFi automation and social trading platform revolutionizing how users, builders, and protocols interact with crypto. By combining seamless automation, gamification, and social engagement, we empower traders to discover, execute, and share innovative trading strategies across multiple chains. With a focus on user-driven growth and simplified blockchain workflows, we are building the future of decentralized finance—where trading is smarter, faster, and more connected. Join us in shaping the next generation of crypto innovation. The Role As a DeFi Engineer, you will play a key role in shaping and building an innovative user experience for the future of decentralised finance. We are looking for a skilled developer who is passionate about automating and abstracting away the complexities of on-chain swaps and liquidity management to provide a seamless trading experience for end users and drive business growth in the DeFi space. This role offers a unique opportunity to collaborate with a high-performance team in developing a cutting-edge product that will redefine the DeFi ecosystem and advance our mission to transform the industry. You will be joining a stealth-mode initiative supported by a well-funded company, allowing you to innovate in a fast-paced, dynamic environment with the resources and support needed to push the boundaries of technology. Your work will directly contribute to creating a product that will have a profound impact on the world of DeFi, underpinned by the financial strength and strategic direction of our organisation. Key Responsibilities Create and maintain backend integrations with top Solana and EVM DeXs (e.g. Raydium, Uniswap, Aerodrome, etc.) as well as new and emerging protocols Build and optimize low-latency, high throughput APIs that abstract and simplify complex DeFi operations. Stay up to date with the latest trends and technologies in DeFi, blockchain, and backend development to continuously improve the product. Work closely with frontend developers to ensure seamless interaction between the frontend and APIs or blockchain nodes for real-time data display. Contribute to the continuous improvement of development processes and workflows. Conduct thorough code reviews, share best practices, and mentor junior team members Ensure security best practices are followed, particularly concerning user data and blockchain interactions. Collaborate with cross-functional teams (design, marketing, product) to deliver new features and improvements according to the product roadmap. Write clean, maintainable, and efficient code Conduct regular testing, debugging, and troubleshooting to enhance the performance and usability of the platform. Knowledge & Experience Must have 3+ years of experience in a similar role and level Proficiency with developing low-latency microservices using Rust or Go in a production environment. Proficiency in blockchain fundamentals, DeFi concepts (e.g. AMMs, cross-chain bridges), and key DeFi protocols and aggregators (e.g. Jupiter, Uniswap, Jito, Flashbots, etc.) Experience integrating natively with DeFi protocols and smart contracts (e.g. Uniswap Router, pump.fun liquidity pools, multicall, etc.) Experience working with Anchor Framework IDLs and EVM ABIs. Experience with debugging, and benchmarking applications with tools such as pprof, delve, and gdb. Experience with version control systems (e.g., Git) in a production setting. Experience with Docker and Kubernetes (or equivalent) for packaging and running microservices in a production environment Experience designing and managing relational databases (MySQL, PostgreSQL) and in-memory data stores (Redis), including schema design, indexing, and caching strategies for low-latency services. Ideal Candidate Profile A creative problem-solver who is eager to innovate and push boundaries in the DeFi space. Possesses a deep understanding of web technologies and a strong grasp of blockchain fundamentals, particularly within DeFi. Thrives in scrappy start-up environments, seeing ambiguity as an opportunity rather than an obstacle. Comfortable taking ownership of complex problems and transforming them into user-friendly solutions. Excels in collaboration, building trust and rapport with both technical and non-technical stakeholders. Adept at communicating complex concepts clearly and concisely. Relentless in delivering high-quality products, even under pressure. Understands that speed and agility are key competitive advantages and drives urgency and efficiency without compromising quality. Passionate about DeFi, with a commitment to continuous learning and staying at the forefront of this dynamic field. Bonus Points Prior experience designing and developing low-latency or high-frequency trading (HFT) systems. Strong understanding of order-book mechanics, market-data feed architectures, and risk-control frameworks. Experience developing and deploying Solana Smart Contracts with Achor. Experience developing EVM Smart Contracts using Solidity and popular toolchains (Foundry or Hardhat). Familiarity with cloud platforms (AWS, GCP) and infrastructure-as-code.

Lazer is a world-class digital product studio composed of 180+ senior engineers and designers with backgrounds from companies like Apple, Google, Coinbase, and more. With our product experience, we have designed, engineered, and grown products from $0 to $200M in revenue. Clients seek out our help because we have the talent to deeply understand their needs and provide industry, technical, or product insights that are uniquely valuable to their efforts. Our clients range from early-stage startups and venture studios to recognizable retail brands and exciting enterprises. Some of our notable clients include Google, Shopify, Coinbase, Alchemy, Hinge, OVO, Polymarket, and more. We are a remote-first organization headquartered in Toronto, Ontario, with employees worldwide. We believe in providing the best experience possible for all Lazerites by fostering a strong community through regular events, company vacations, competitive compensation, unlimited PTO, and more! Join Lazer and help us solve problems and build the next generation of products! Lazer Crypto is a specialized team within Lazer, comprising more than 20 full stack, web3 native engineers dedicated to building modern dApps and web3 solutions. This team helps founders and growing teams accelerate their product launches across various blockchain ecosystems. Our notable web3 clients include Berachain, Base, Privy, Polymarket, Uniswap, Alchemy, and others. This is a unique opportunity to work with some of the biggest crypto projects as they expand into the native mobile app world. Our team is distributed across North America, combining deep technical expertise with a commitment to being kind, supportive collaborators who build exceptional products. Who You Are 5-8 years of professional experience in software development Proven experience in a consulting or client-facing technical role is required Blockchain and crypto project experience is a plus Expert in Android development using Kotlin Advanced expertise in Kotlin for Android development Strong understanding of Android architecture components and Jetpack libraries Experience with Material Design implementation and custom UI components Proficient in implementing sophisticated animations using Android's native animation frameworks Strong knowledge of TypeScript, React, and Node.js, with experience building or working with mobile applications Experience with web3 technologies is a plus Experience designing and maintaining SDK packages for Android platforms Knowledge of mobile crypto products and blockchain integration is highly valued Understanding of modern JavaScript libraries and APIs for frontend development Familiarity with Web3.js, Ethers.js, or other blockchain libraries is a plus Expert knowledge of Android app performance optimization, memory management, and security best practices for handling private keys on Android devices Knowledge of Google Play Store requirements and Android security best practices Problem-solver who thrives in consulting environments with experience managing client expectations and delivering on tight timelines Strong communication skills with the ability to explain technical concepts to both technical and non-technical stakeholders Self-sufficient, autonomous engineer who takes ownership of projects with minimal supervision What You'll Do Design, architect, and implement sophisticated Android dApps and blockchain applications for industry-leading clients across DeFi, NFTs, gaming, and infrastructure projects Develop cross-chain Android applications with smooth, performant blockchain interactions across Ethereum, Solana, and emerging L1/L2 ecosystems Create frictionless wallet experiences on Android with optimized connections, transaction signing flows, and secure key management solutions Collaborate with founders and technical leaders to shape mobile blockchain strategy and implementation roadmaps Make critical technical decisions ensuring scalability, security, and exceptional user experiences on Android Deliver high-quality code that meets performance benchmarks and security requirements Stay at the forefront of web3 mobile technologies, experimenting with emerging solutions and bringing innovations to client projects Collaborate with other mobile specialists to ensure consistency and best practices across Android development Contribute to open-source tools and libraries that advance the state of web3 mobile development Mentor other engineers on Android-specific blockchain integration challenges and solutions Why Work With Us 🚀 Accelerate Your Growth: Work across multiple industries and cutting-edge projects with a team that ships fast. 💥 Maximum Impact: Shape the future of the tech industry by helping ambitious projects reach their potential. 🏅 True Ownership: Everyone ships code and has real autonomy with minimal meetings. 💡 Continuous Learning: Be part of a team of senior engineers and designers who love learning and knowledge sharing. Why This Might Not Be For You 🤖 You Resist Modern Tools: We leverage AI and cutting-edge technology to build rapidly and focus our energy on solving the most complex, high-impact challenges for our clients. 🏗️ You Crave High Structure: We thrive in an autonomous, fast-moving environment, which means you need to be comfortable with some ambiguity. 😴 You Prefer Conventional Careers: Our consulting approach involves varied projects and direct client interaction — it's not for everyone. 1️⃣ You Like Staying in One Lane: Our projects require adapting to different tech stacks and modern tooling quickly. Benefits & Perks 🌐 Work From Anywhere: Choose your workspace — all you need is strong wifi and a passion for building! 🧘‍♂️ Work / Life Balance: We believe in our team’s ability to have it all; a great career, and time to unplug and live…you know...life. 🩺 Employee Care: We provide full benefits (healthcare, dental, vision) for our employees (401k for our US employees) 🏖️ Unlimited PTO: Everyone needs a break. Take at least 15 days off a year, and more if you need—just be cool about it and keep the team in mind. 🎉 Regular Team Retreat: Join us for a week of team bonding at amazing destinations. Recent trips include the Dominican Republic, Cancun, and Hawaii — plus ones welcome.