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Experience Level
Senior
Qualifications
QualificationsRequiredProven experience in building, deploying, and maintaining SVM smart contracts in a production environment, both with and without Anchor. Experience collaborating with auditors to ensure code integrity. In-depth understanding of Solana and low-level SVM concepts. A demonstrated history of high agency, a proactive approach to tackling unfamiliar technical and non-technical challenges, and a strong team-oriented mindset. A genuine passion for decentralized finance and its ecosystem. PreferredFamiliarity with cloud infrastructures, preferably AWS. Experience in quantitative trading or DeFi projects.
About the job
Ellipsis Labs is a thriving and profitable startup based in New York City, dedicated to creating innovative products and infrastructure in the realm of decentralized finance.
We are the proud developers of Phoenix, the foremost order book spot exchange on the Solana blockchain, and a top 10 decentralized exchange (DEX) boasting over $70 billion in volume since our inception in 2023. Moreover, we are recognized as one of the most active and reputable on-chain market makers in the cryptocurrency sector.
All positions are based at the Ellipsis Labs office in New York City.
The Opportunity
Ellipsis Labs is on the lookout for a Senior Smart Contract Engineer specializing in SVM to enhance our dynamic team. In this pivotal role, you will:
Design, develop, and maintain essential smart contracts for the SVM, along with implementing the necessary monitoring systems.
About Ellipsis Labs
At Ellipsis Labs, our mission is to lead innovation in decentralized finance, providing cutting-edge solutions and exceptional user experiences. With our flagship product, Phoenix, we are setting new standards in the DeFi space and shaping the future of financial transactions on the Solana blockchain.
About Us:Veda is revolutionizing decentralized finance (DeFi) by providing a robust engine that powers financial applications, allowing platforms to effortlessly create on-chain yield products. Our mission is to democratize access to DeFi globally by offering seamless, enterprise-grade integrations tailored for modern finance. Veda's innovative technology su…
Join Vedatech Labs as a Smart Contract Engineer specializing in SVM technology. In this fully remote role, you will be responsible for designing, developing, and deploying smart contracts on blockchain platforms. Your expertise will be critical in ensuring the security and efficiency of our smart contracts, as well as collaborating with cross-functional teams to drive innovation and excellence in our projects.
Join DoubleZero as a Smart Contract Engineer and play a crucial role in the creation of innovative smart contracts and software systems that are integral to the DoubleZero protocol.Key ResponsibilitiesDeveloping on Solana and Beyond: Utilize your engineering skills to craft smart contracts on Solana/SVM and other blockchain platforms while identifying enhancements to promote the growth of DoubleZero's multi-tenancy capabilities.Ensuring Security: Leverage your understanding of common smart contract vulnerabilities to produce secure, stable code, complemented by rigorous unit and integration tests; engage in the auditing and testing processes of your code.Technical Expertise: Possess a strong understanding of smart contract principles, including those related to Solana, Ethereum, and other blockchain technologies. Discern when to develop new solutions versus utilizing existing open-source libraries.Beyond Smart Contracts: Design and implement robust software that interacts seamlessly with the smart contract aspects of the DoubleZero protocol.Effective Communication: Actively engage in the ongoing curation of the DoubleZero codebase, facilitating discussions around issues and pull requests.QualificationsAt least 2 years of experience in smart contract development, with a background in software development for large-scale products.Proficient in Rust, with experience in one or more of the following: TypeScript, Shell Scripting, Solidity, Move, and Go.Collaborative experience in teams focused on building businesses utilizing various crypto protocols.Familiarity with scrum and sprint-based development methodologies, demonstrating strong attention to detail and timely task completion.Experience in contributing to open source software projects, understanding the implications of changes in open source repositories.Personal AttributesBuilder’s Mindset: You excel in dynamic early-stage environments and are passionate about creating scalable systems from the ground up. You possess the ability to prioritize effectively and meet deadlines in high-pressure scenarios.Problem Solver: You take initiative in addressing complex challenges, embracing uncertainty and fostering collaboration with teammates to find effective solutions.
About Us:At wynd-labs, we are dedicated to constructing cutting-edge infrastructure that channels vast amounts of web data to organizations honing the world’s most advanced AI models.Our team plays a pivotal role in powering Grass, a bandwidth-sharing network that enables us to manage a large-scale distributed crawler, providing us with unparalleled access to high-quality public web data globally. Furthermore, we have developed sophisticated pipelines for ingesting, segmenting, and annotating billions of videos, transcripts, and audio files, which fuels dataset creation for leading-edge research labs.We operate with agility and technical prowess, eliminating bureaucracy to facilitate rapid decision-making; we are a group of innovators striving to redefine the possibilities of open web data and AI.Your Role:We are on the lookout for a Smart Contract Engineer - SVM who possesses extensive experience in developing smart contracts leveraging Support Vector Machine technology. You will join a compact and forward-thinking team, spearheading initiatives to create secure and efficient smart contracts, fostering innovation in blockchain technology while supporting our ambition to make Grass a cornerstone of the internet’s future.
About Us:Ether.fi is an innovative and rapidly expanding crypto-native financial platform dedicated to empowering users with complete control over their wealth. We simplify the processes of saving, earning, and spending cryptocurrency. As a frontrunner in the decentralized finance (DeFi) sector, ether.fi provides a comprehensive, non-custodial suite of products—Stake, Liquid, and Cash—that connect cryptocurrency utility with real-world convenience.With over $8 billion in assets under management and a dynamic team of over 25 professionals, we are constructing a sustainable, secure, and scalable financial infrastructure designed to onboard the next billion cryptocurrency users. Our offerings, which include liquid staking, automated yield strategies, and crypto-native payment solutions such as credit cards, create a holistic decentralized banking experience.As we continue to grow, we are on the lookout for talented, mission-driven individuals eager to help shape the future of finance.Discover more at ether.fi.
Senior EVM & Web3 Engineer - Enterprise Distributed LedgerLocation: Remote - US - Open to Europe if willing to overlap with ESTCompensation: CompetitiveJoin a rapidly expanding software firm that is committed to the development and support of an open-source, proof-of-stake platform that is EVM-compatible. This network is specifically designed to cater to the requirements of enterprise and Web3 applications, emphasizing speed, security, and stability. We are on the lookout for an experienced Smart Contract Engineer to become a part of our innovative team, concentrating on the development of both core Java services and Web3 APIs (JS/TS) that facilitate transaction processing across our network.As a pivotal, hands-on developer, you will dedicate approximately 80% of your time to designing, coding, and testing. Your main objective will be to enhance EVM compatibility and elevate the developer experience (DevEx) for users transitioning from other EVM chains. This encompasses both low-level transaction processing in Java and high-level API development for public use.Key Responsibilities:EVM Compatibility & DevEx: Engage with the EVM ecosystem to share crucial insights and actionable explorations that will enhance EVM DevEx.Core Service Enhancement: Develop and improve the Java-based smart contract services that interpret bytecode and manage transactions submitted through an EVM client.Web3 API Development: Create, develop, and maintain server-side logic and public APIs using TypeScript, SQL, REST, GraphQL, and Web Sockets.Optimization & Scalability: Write efficient, reusable, and reliable code to optimize performance for speed, scalability, and overall system efficiency.Tooling & Integration: Leverage your knowledge of Solidity and the EVM transaction lifecycle to investigate and enable Web3 tool and DApp integration capabilities, ensuring developers can utilize familiar tools.Innovation: Constantly explore, assess, and implement new technologies to enhance development productivity and effectiveness.
Uniswap Labs is a leading innovator in decentralized finance, contributing significantly to the Uniswap Protocol, renowned as the world’s largest decentralized exchange (DEX), with over $4 trillion in trading volume across 17 blockchain networks. Our mission is to develop pioneering products that empower millions to access the protocol effectively, including the Uniswap Web App, Wallet, and Trading API. Furthermore, we serve as the primary technical provider for Unichain, an Ethereum Layer 2 solution designed specifically for liquidity across multiple chains.Joining Uniswap means being part of a transformative team that is redefining the dynamics of value exchange on the internet.
As a Smart Contract Quality Assurance Engineer specializing in Oracle technologies, you will be pivotal in maintaining the integrity and security of our smart contract ecosystem. Your core responsibilities will include:- Crafting and implementing automated testing frameworks specifically tailored for Oracle smart contracts, encompassing unit tests, integration tests, and comprehensive end-to-end testing.- Creating and executing security test cases targeting critical scenarios such as price data feeds, off-chain data retrieval, multi-party consensus mechanisms, and resistance to Sybil attacks.- Simulating various on-chain and network irregularities (e.g., high gas fees, network latency, node failures) to conduct stress testing and evaluate fault tolerance.- Collaborating closely with the development team to perform vulnerability scans and assist in code audits prior to contract deployment, ensuring the absence of critical security threats.- Producing and maintaining comprehensive documentation for tests, defect reports, and quality assessments.- Engaging in the verification of oracle node data accuracy and conducting performance benchmarks.- Staying updated with blockchain testing tools and best practices while proposing innovative testing methodologies to improve efficiency.
About Waterfall:Waterfall is an innovative trading protocol designed for rare NFTs and collectible digital art, featuring real-time on-chain pricing. Our mission is to enhance the liquidity and composability of NFTs by pioneering new infrastructure and auction mechanisms. Our unique concept allows users to trade shards to forecast NFT prices, facilitating immediate price discovery for any asset listed.Supported by prominent investors like Electric Capital and Pantera Capital, we maintain a dynamic and agile team culture that prioritizes inclusivity. We are committed to making Waterfall not just a platform of choice, but a great place to advance your career.Stay connected with us by following our social media channels and visiting our website!
Join Omen as a Blockchain EngineerAt Omen, we are revolutionizing the trading landscape by creating a unified platform that allows users to trade various asset types with ultimate flexibility and efficiency.Picture a world where you can seamlessly buy spot equities and cryptocurrencies, trade on leveraged positions, short companies, or hold tokenized shares in diverse income-generating assets—all managed from a single interface without the hassle of multiple brokers or protocols.We envision a future for retail investors that mirrors the composability and power of institutional trading, ensuring speed, precision, and security.Our dynamic team consists of 8 dedicated engineers collaborating in our full-floor office located in the vibrant heart of Midtown NYC. Our collective expertise includes trading systems, startup innovation, application development, and a shared passion for our mission.Supported by leading seed investors, we are committed to relentless progress towards our ambitious goals.Role Overview:We are developing a cutting-edge perpetual derivatives platform featuring a high-performance off-chain trading engine complemented by on-chain settlement and enforcement. As a Blockchain Engineer, you will be an integral part of our blockchain team, creating the smart contract infrastructure that ensures the safety, accuracy, and enforceability of off-chain trades.Your collaboration with the trading systems team will be crucial in establishing clear and precise settlement semantics between off-chain states and on-chain finality.
Ellipsis Labs is a pioneering and profitable startup based in New York, dedicated to creating innovative products and infrastructure in the realm of decentralized finance.As the developer of Phoenix, the leading order book spot exchange on the Solana blockchain, we have established ourselves as a top 10 decentralized exchange (DEX), boasting over $70 billion in transaction volume since our launch in 2023. Furthermore, we are recognized as one of the most active and influential on-chain market makers in the cryptocurrency space.All roles are based in the Ellipsis Labs office in New York City.
Full-time|Hybrid|In-Person or Remote | NYC Preferred
About UsPaxos Labs is at the forefront of developing enterprise infrastructure that drives the next generation of trusted on-chain financial products. We collaborate with major financial institutions worldwide to create transparent and verifiable on-chain solutions tailored for everyday financial activities. If you are passionate about making decentralized finance (DeFi) and digital assets accessible to a broader audience, we invite you to explore a career with us at Paxos Labs.We are currently seeking a Smart Contract Engineer to enhance Paxos Labs' DeFi protocol infrastructure.What We're Looking ForOur smart contract team comprises skilled developers who have successfully delivered multiple decentralized applications ranging from lending markets to vaults. We seek a proactive developer who can not only craft code but also research and apply a profound understanding of DeFi to develop mission-critical software for the world's largest enterprises.Key Interests Include:DeFi Yield StrategiesTokenizationDecentralized LendingUnder/Un-Collateralized LendingKey ResponsibilitiesInvestigate and design innovative protocol mechanisms related to vaults, lending, and other DeFi primitives.Guide protocol design decisions, weighing trade-offs between trust assumptions and efficiency.Create Solidity contracts and develop comprehensive test suites for our protocols.Uphold stringent organizational and security standards for our open-source codebase.
Join Our Team as a Senior Backend & Smart Contract Engineer!At anagram, we are revolutionizing the way individuals earn yield on digital assets. Our innovative platform is designed to be non-custodial and integrates seamlessly with the applications users already cherish.Our approach is straightforward: we prioritize speed in development, validate concepts swiftly, focus on amplifying what users appreciate, and eliminate features that do not meet their needs.You would be an ideal fit for this role if you possess a profound passion for enhancing user experiences, enjoy working at the foundational level of blockchain systems, and thrive in creating solutions from the ground up. At anagram, our backend is at the core of our product—from our sophisticated risk engine and fund accounting to our Solana programs that enable seamless, non-custodial yield generation.Your Role and ResponsibilitiesCraft and deploy Solana smart contracts using Rust for our essential yield platform, overseeing fund management, shares, and on-chain routing logic.Enhance and sustain backend systems like indexers, risk engines, and real-time fund analytics, ensuring peak performance and reliability as we scale.Collaborate across the technology stack to integrate backend functionalities with our API and SDKs, providing intuitive interfaces for frontend developers and integration partners.Advance product experiments by swiftly validating ideas and refining them based on user and partner feedback.Work closely with full-stack engineers and product teams to deliver an exceptional developer and user experience.QualificationsA driven and modest senior engineer with over 5 years of experience and outstanding technical prowess in your field.Extensive background in developing and deploying Rust-based smart contracts on Solana.Proven capability to lead backend and protocol engineering projects of medium to large scope.In-depth knowledge of DeFi principles such as staking, lending, and AMMs, along with experience in crypto product development.Demonstrated success in fast-paced, iterative settings and identifying product-market fit.Proficiency in navigating various engineering domains and a holistic approach to product experience is essential.
About UsIntroducing BridgeAt Bridge, we are revolutionizing the payments landscape by developing an innovative payments platform leveraging stablecoins, designed to streamline global financial transactions. Our technology enables rapid, cost-effective payments and provides seamless access to U.S. dollars through stablecoins. By utilizing our APIs, businesses can transfer and receive funds across borders more efficiently than traditional methods such as SWIFT. With our virtual accounts, international consumers and businesses can effortlessly manage, store, and utilize U.S. dollars. Our robust payouts infrastructure empowers platforms to send USD payments globally. We envision a future where trillions of dollars circulate through stablecoin payment ecosystems, and we are at the forefront of making that vision a reality.Headquartered in San Francisco, our passionate team comprises experts who have previously developed financial infrastructures at top-tier companies like Coinbase, Stripe, Square, Brex, Upstart, DoorDash, and Airbnb. Each team member is committed to the belief that stablecoins will play a pivotal role in enhancing global financial transactions.Role OverviewAs a pioneering blockchain engineer at Bridge, you will be entrusted with the autonomy to work on groundbreaking projects that have a global impact, providing customers with unprecedented access to innovative financial products. The use cases we tackle evolve rapidly, thanks to our team's dedication to continuous improvement for our partners and end-users. If you seek greater independence while working on a completely greenfield initiative, Bridge is the ideal environment for you.
Ellipsis Labs is a thriving and profitable startup based in New York City, dedicated to creating innovative products and infrastructure in the realm of decentralized finance.We are the proud developers of Phoenix, the foremost order book spot exchange on the Solana blockchain, and a top 10 decentralized exchange (DEX) boasting over $70 billion in volume since our inception in 2023. Moreover, we are recognized as one of the most active and reputable on-chain market makers in the cryptocurrency sector.All positions are based at the Ellipsis Labs office in New York City.The OpportunityEllipsis Labs is on the lookout for a Senior Smart Contract Engineer specializing in SVM to enhance our dynamic team. In this pivotal role, you will:Design, develop, and maintain essential smart contracts for the SVM, along with implementing the necessary monitoring systems.
Category Labs (formerly known as Monad Labs) is an innovative team of systems engineers and researchers dedicated to advancing decentralized technology. Our mission is to create groundbreaking improvements over existing blockchain solutions. Following a successful $225 million Series A funding round led by Paradigm, we are excited to expand our talented team.The RoleWe are seeking a Smart Contract Engineer to join our core engineering team, focusing on application layer development. Your responsibilities will encompass collaborating with external application and infrastructure teams and designing and implementing new primitives enabled by our high-performance Ethereum Virtual Machine (EVM) client. You will thrive in a dynamic startup atmosphere as part of a small, efficient team.What You Will DoDevelop smart contracts optimized for the resources and throughput provided by our Monad client.Assess and address the needs of the app developer ecosystem through close collaboration with the core engineering team.Engage directly with external application and infrastructure teams to provide insights and solutions drawn from your in-depth understanding of their domains and the Category Labs client.Who You AreYou possess at least 4 years of software engineering experience, including a minimum of 3 years focused on writing smart contracts in Solidity.You bring prior experience in blockchain engineering, specifically within Layer-1, Layer-2, or Infrastructure projects (such as Oracles, Bridges, Indexers, RPC Providers, Wallets, or other high-performance applications).You are proficient with tools such as Foundry and Hardhat, and you have a strong understanding of security vulnerabilities at the application layer.Your background includes backend engineering experience using low-level programming languages like C, C++, or Rust.You have successfully built significant projects from scratch, ideally with a user base (the more, the better).You are an excellent communicator, enthusiastic about engaging in technical discussions, reviews, and documentation.You embody qualities that reflect our engineering team's values, including a practical approach to problem-solving and strong design skills.
About the RoleThis position is pivotal in facilitating the integration of Doppler's smart contract protocol, SDK, and Indexer for third-party teams. You will play a crucial role in collaborating with teams such as Zora, Bankr, FxHash, Paragraph, and more, while also developing new features tailored to their needs.Key ResponsibilitiesDesign and assist various applications in creating their optimal Doppler integration.Implement solutions ranging from example code to hands-on pull requests.Test and automate reliability through cutting-edge methodologies.Ensure successful production deployments.Optimize and iterate on market structures to achieve ideal outcomes.QualificationsWe seek a seasoned engineer with a history of shipping and supporting production systems. You should possess the ability to write clean and maintainable code, with a comprehensive understanding of transitioning integrations from design to deployment. Proficiency in TypeScript is essential, and you should be comfortable working with or developing new SDKs, APIs, and engaging with smart contracts. Your ability to quickly navigate unfamiliar codebases, write sample integrations, submit production-ready pull requests, and troubleshoot issues across application and contract boundaries is crucial.Ideal Candidates Will Have:Strong experience with TypeScript.Experience integrating EVM smart contracts in production environments.Ability to write robust automated tests.Excellent communication skills and the ability to collaborate effectively with external engineering teams.A proven track record of thriving in remote, high-ownership settings.Experience maintaining high-usage production consumer applications.You are pragmatic, reliable, and enthusiastic about delivering high-quality on-chain integrations capable of handling millions in daily volume.
About Us:Veda is a pioneering DeFi engine that empowers financial applications, allowing platforms to effortlessly create on-chain yield products. Our vision is to democratize DeFi for everyone by delivering seamless, enterprise-grade integrations for contemporary finance. Veda's innovative technology underpins many of DeFi's largest vault products, including ether.fi Liquid, PlasmaUSD Vault, Lombard DeFi Vault, and Mantle cmETH. With a total value locked (TVL) of $6B and over 100,000 users, Veda stands as one of the fastest-growing DeFi protocols, driven by a team passionate about decentralized finance and committed to excellence. This role offers significant impact, giving you the chance to directly influence some of the most essential infrastructure in DeFi.Your Role:We are on the lookout for a Backend Engineer who will be responsible for designing, building, and scaling the core services that power the Veda platform. You will collaborate across a modern, service-based architecture to deliver reliable and high-performing systems that support yield products for leading names in DeFi and fintech.The ideal applicant is a proactive engineer with a strong sense of ownership, adept at navigating ambiguity, and experienced in taking products from initial concept to production. Expect to spend 70–80% of your time coding, making direct contributions to system design, architecture, and implementation.
About ErgoniaErgonia is a pioneering trading firm in the cryptocurrency sector, boasting extensive expertise in both decentralized finance (DeFi) and centralized finance (CeFi). We manage some of the most sophisticated and high-traffic trading systems within the DeFi landscape while also actively engaging in trading across leading centralized platforms. Our operations encompass market making, yield optimization strategies, and advanced on-chain execution techniques.We are currently seeking a DeFi Engineer to drive our expansion into additional blockchain networks, protocols, and innovative trading strategies. In this role, you will collaborate closely with traders, quantitative analysts, and engineers in a dynamic, high-performance environment.Your ResponsibilitiesOn-Chain Data & ExecutionDevelop systems to extract and process high-frequency, low-latency data from various blockchains.Manage and execute transactions in performance-critical settings.Smart Contract and On-Chain Program DevelopmentDesign, implement, and deploy production-grade smart contracts on Solana or EVM-compatible environments.System & Architecture DesignContribute to the comprehensive architecture for exchanges, execution systems, and data pipelines.Pragmatic DeliveryIn the fast-paced world of trading, you will need to make informed decisions with incomplete information, navigate trade-offs, and deliver functional systems within tight deadlines. We value engineers who excel in prioritizing critical tasks, moving swiftly, and executing effectively.Remote Work EssentialsMaintain reliable high-speed internet and a dedicated workspace conducive to continuous development and communication.
Join Rockstar, a pioneering foundation committed to advancing the growth, decentralization, and sustainability of a leading decentralized finance protocol. Our mission focuses on delivering value in key areas such as Protocol and Innovation, Developer Support, Governance, Research, and Security through strategic grant-making.We are on the lookout for a skilled Protocol Engineer to become a vital part of our technical team. You will play an instrumental role in developing smart contracts for in-house initiatives, the Unichain protocol, and collaborations with grantees.In this position, you will be tasked with designing, implementing, and optimizing smart contract systems. You will actively engage in technical design discussions, evaluating trade-offs among optimization, flexibility, and integration, while also offering design feedback to ecosystem participants, including hook developers and DeFi projects on Unichain.Key Responsibilities:Design, implement, and optimize Solidity-based smart contracts for protocol-related projects, prioritizing security, efficiency, and maintainability.Provide technical guidance and design feedback to external developers building on the protocol and Unichain, including hook developers and DeFi projects.Explore and prototype novel DeFi primitives, trading mechanisms, and smart contract architectures to enhance the protocol’s functionalities.Participate in design sessions and code reviews to uphold high standards in code quality, security, and organization.Implement unit tests, fuzz testing, and gas optimizations to ensure the reliability and performance of smart contracts.Potential Areas of Work:Hooks and reference implementations for the protocol's latest versionExperimental swapping UX designsIndexers and graph traversal algorithmsComposable DeFi legosSDK abstractions and developer toolingPeriphery integrations such as liquidity management tools and swap-and-add functionalitiesQualifications:Required Skills & Experience:In-depth understanding of DeFi patterns and smart contract architectureMinimum two years of experience crafting complex Solidity smart contracts with a focus on readability, maintainability, and securityProficiency with Foundry, including cheatcodes, foundry.toml, and script executionExperience in unit testing and fuzz testing for smart contract securityConfidence in using Git and managing version control in a collaborative engineering environmentAbility to design clean abstractions and reusable smart contract componentsFamiliarity with the latest version of the protocol's contracts and associated DeFi protocolsPreferred Qualifications:Experience with Yul and other low-level programming languages
