Blockchain Engineer Specializing In Smart Contracts jobs in New York City – Browse 1,316 openings on RoboApply Jobs

Blockchain Engineer Specializing In Smart Contracts jobs in New York City

Open roles matching “Blockchain Engineer Specializing In Smart Contracts” with location signals for New York City. 1,316 active listings on RoboApply Jobs.

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companyOmen logo
Full-time|On-site|New York City

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.

Dec 18, 2025
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companyPaxos Labs logo
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.

Nov 13, 2025
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companyEllipsis Labs logo
Full-time|On-site|New York, New York

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.

Jan 11, 2024
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companyEllipsis Labs logo
Full-time|On-site|New York, New York

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.

Feb 20, 2024
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companyTempo Technologies, Inc. logo
Full-time|On-site|NYC Office

Join Tempo, a pioneering layer-1 blockchain designed specifically for stablecoins and real-world payments, leveraging the deep expertise of Stripe in global payments and Paradigm in crypto technology.Our innovative payment-first architecture offers a scalable, cost-effective, and reliable backbone to accommodate high-volume payment scenarios. We aim to facilitate seamless, economical, and scalable money transfers, prioritizing user simplicity for fintechs, traditional banks, merchants, platforms, and all others eager to modernize their payment solutions.We are collaborating with top-tier design partners across AI, e-commerce, and financial services, including Anthropic, Coupang, Deutsche Bank, DoorDash, Mercury, Nubank, OpenAI, Revolut, Shopify, Standard Chartered, Visa, and more.Our team is composed of crypto-enthusiasts dedicated to building the essential infrastructure for significant economic transactions on the blockchain. If you thrive in a fast-paced environment and are ready to take bold steps, we invite you to join us!About the RoleAs a Product Engineer, you will empower users to leverage the Tempo blockchain through the development of first-party applications like the Tempo Wallet and by facilitating integrations for customers to enhance their stablecoin transactions. You will engage closely with production-grade blockchain systems and transaction flows.This position is ideally suited for former founders or aspiring entrepreneurs. You will encounter a diverse array of critical payment and crypto challenges across startups, mid-market firms, and large enterprises, allowing you to oscillate between product development and deployment in customer environments, thereby gaining comprehensive insights into the entire product lifecycle, from integration to market strategy.Key ResponsibilitiesDesign and develop internal and first-party applications for both agents and users.Collaborate with startups and enterprise clients to integrate Tempo into their payment infrastructures.Acquire an in-depth understanding of the Tempo blockchain and its product suite.Quickly navigate through unfamiliar codebases and organizations to ensure timely product launches.Gather field insights to enhance the product, developer experience, and blockchain technology.

Mar 27, 2026
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companySei Development Foundation logo
Special Projects Lead

Sei Development Foundation

Full-time|On-site|New York City

About UsSei Development Foundation is at the forefront of blockchain innovation as the creator of the first parallelized layer 1 blockchain. By revolutionizing the execution environment in Web3, Sei is redefining standards for blockchain performance and scalability. Applications on Sei harness the speed of Web2 while leveraging the decentralization and sovereignty unique to Web3. For more details, please visit Sei's official website.About the RoleThe Sei Development Foundation is in search of a strategic and operationally skilled Special Projects Lead to partner directly with our Executive Director (ED). This pivotal role acts as the strategic right hand to the ED/COO, facilitating seamless organizational operations, aligning team priorities, and managing cross-functional tasks. The Special Projects Lead will be a trusted collaborator with a broad perspective on strategic initiatives, execution across teams, and organizational coherence. Responsibilities include owning processes, establishing rhythms, and ensuring follow-through on key projects, while other leaders focus on their specific domains.This position is based in New York City and requires a strong on-site presence to work closely with the executive team.

Mar 22, 2026
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companySei Development Foundation logo
Blockchain Recruiter

Sei Development Foundation

Full-time|On-site|New York City

About UsSei is pioneering the future of blockchain technology as the first parallelized layer 1 blockchain. By enhancing the most prevalent execution environment in Web3, we are establishing unmatched standards in performance and scalability. Applications on Sei harness the speed of web2, coupled with the decentralization and autonomy of web3. For more insights, visit Sei's official website.At the Sei Development Foundation, we are on the hunt for a passionate Recruiter who shares our enthusiasm for Web3. This role will collaborate with leaders across Business Development, Growth, Product, and more to expand the Sei team both locally in New York and globally. You will be hands-on in sourcing and hiring top-tier Web3 talent across a wide range of roles.Join a distinguished team in the Web3 space, featuring accomplished leaders from renowned organizations such as Polygon, Solana, Protocol Labs, and Binance, as we build the world’s fastest blockchain.

Mar 20, 2026
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companyn1 logo
Full-time|$120K/yr - $260K/yr|On-site|New York City

About N1:N1 stands at the forefront of technology as the pioneering hyper-efficient and horizontally scalable blockchain network, crafted to facilitate trustless computing on a global scale.Our elite team brings together expertise from prestigious institutions including Harvard, Carnegie Mellon University, DFINITY, VMWare, and Galaxy Digital, and is supported by renowned investors such as Founders Fund, Kraken Ventures, and Amber Group.Position Overview:In this pivotal role within our software engineering team, you will lead the design and development of the critical backend systems for our blockchain network. Your focus will be on enhancing networking, reliability, and scalability. You will leverage your deep expertise in Rust to create, test, debug, and deploy robust production-grade software components. Additionally, you will uphold and advance best practices in software engineering within a significant open-source initiative.

May 30, 2024
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companyCity of New York logo
Special Assistant

City of New York

Full-time|On-site|New York City

Join the dynamic team at the City of New York as a Special Assistant. In this pivotal role, you will provide essential support to senior officials, facilitating efficient operations and contributing to key initiatives within the city.As a Special Assistant, you will be responsible for managing schedules, preparing reports, and assisting in the coordination of projects. Your organizational skills and attention to detail will be vital in ensuring the success of our team.

Apr 1, 2026
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companyCity of New York logo
Special Officer

City of New York

Full-time|On-site|New York City

The City of New York is seeking a dedicated and proactive Special Officer to join our team. In this vital role, you will help ensure the safety and well-being of our community through various initiatives and support services.

Mar 31, 2026
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companyCity of New York logo
Special Assistant

City of New York

Full-time|On-site|New York City

Join our dedicated team at the City of New York as a Special Assistant. In this dynamic role, you will provide essential support to senior management, assisting in the coordination of projects and initiatives that drive our city forward. Your contributions will help enhance the operational efficiency of various departments, making a tangible impact on the lives of New Yorkers.

Apr 8, 2026
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companyCity of New York logo
Special Officer

City of New York

Full-time|On-site|New York City

The City of New York seeks a Special Officer to help maintain safety and order throughout New York City. This role supports the community by focusing on security and public well-being. Main responsibilities Maintain order in assigned locations Respond to incidents as needed Coordinate efforts with local law enforcement What we value Strong interpersonal communication Commitment to serving the public Active, solution-oriented mindset

Apr 22, 2026
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companyCity of New York logo
Full-time|On-site|New York City

The City of New York seeks a Special Assistant to the Commissioner. This role provides direct support to the Commissioner, helping manage daily operations, advance strategic projects, and coordinate public engagement activities. Key Responsibilities Manage the Commissioner's schedule, meetings, and communications Assist with planning and carrying out strategic initiatives Organize and coordinate public engagement events Requirements Strong organizational abilities Clear and effective communication skills Proven commitment to public service Location This position is based in New York City.

Apr 23, 2026
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companyCity of New York logo
Special Officer

City of New York

Full-time|On-site|New York City

Join the City of New York as a Special Officer, a pivotal role that contributes to the safety and security of our vibrant city. As a Special Officer, you will be responsible for maintaining order, enforcing regulations, and ensuring the well-being of our community. If you are passionate about public service and eager to make a positive impact, we invite you to apply.

Mar 21, 2026
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companyCity of New York logo
Full-time|On-site|New York City

We are seeking a dynamic and results-oriented Manager of Special Projects to lead strategic initiatives within the City of New York. This role entails coordinating various projects aimed at enhancing city operations and services. The ideal candidate will have exceptional leadership skills, a strong analytical mindset, and the ability to foster collaboration across departments.

Mar 28, 2026
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companyCompass Pathways plc logo
Contract|$65K/yr - $85K/yr|On-site|New York, United States

Company Overview:Compass Pathways plc (Nasdaq: CMPS) is a pioneering biotechnology firm focused on advancing patient access to groundbreaking innovations in mental health. Headquartered in London, UK, with a significant presence in New York City, we aim to develop transformative treatments that enhance the lives of individuals facing mental health challenges, particularly those unresponsive to existing therapies.We are at the forefront of a new approach to mental health treatment, emphasizing rapid and lasting responses through our investigational COMP360 synthetic psilocybin therapy, which is poised to be a first-in-class solution. This therapy has been granted Breakthrough Therapy designation by the US FDA and has received Innovative Licensing and Access Pathway designation in the UK for treatment-resistant depression (TRD), addressing a critical unmet need in mental health care.As we advance through phase 3 trials for TRD and have successfully completed phase 2 studies for both post-traumatic stress disorder (PTSD) and anorexia nervosa, we are preparing for further late-stage research in PTSD. Our vision encapsulates a world where mental well-being extends beyond the mere absence of illness, enabling individuals to thrive.Job Overview:The IT Support Engineer will play a critical role in providing technical assistance to internal users within the organization. This position involves supporting audio-visual and IT-related setups and resolving various technical issues to ensure seamless operations.

Feb 13, 2026
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companyCity of New York logo
Special Project Intern

City of New York

Internship|On-site|New York City

Join the City of New York as a Special Project Intern, where you will have the unique opportunity to collaborate on impactful projects that enhance the community. This internship is designed to provide hands-on experience in various departments, allowing you to contribute your talents and gain valuable insights into public service.

Apr 1, 2026
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companyCity of New York logo
Full-time|On-site|New York City

The City of New York seeks a Special Projects Coordinator to support the management and delivery of citywide initiatives. This position plays a key part in projects that shape city operations and public services. Key responsibilities Coordinate and oversee special projects from initial planning through final execution Collaborate with teams across multiple departments to keep projects on schedule Monitor project milestones and prepare reports on progress and results What we look for Strong organizational skills with close attention to detail Ability to take initiative and address challenges proactively Interest in public service and a commitment to city initiatives Location This role is based in New York City.

Apr 21, 2026
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companyCity of New York logo
Full-time|On-site|New York City

The City of New York seeks a Special Events Coordinator to organize gatherings that showcase city initiatives and encourage community involvement. This role plays a part in shaping events that connect residents and highlight municipal programs throughout New York City. Key responsibilities Plan and coordinate a variety of special events held across New York City. Manage event logistics from the earliest planning stages through to completion. Ensure each event runs smoothly and creates a positive experience for attendees. Assist in engaging the community and supporting city priorities through public events. Role focus This position centers on organizing experiences that strengthen community spirit and promote the city's programs. The Special Events Coordinator works closely with city teams to deliver events that leave a lasting impression.

Apr 23, 2026
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companyZip logo
Full-time|On-site|New York City

Join our dynamic team at Zip as a Contracts Analyst! In this pivotal role, you will be responsible for analyzing, reviewing, and managing contracts to ensure compliance and mitigate risks. Your attention to detail will play a critical role in our operations, and you will have the opportunity to collaborate with various departments to enhance our contracting processes.

Mar 16, 2026

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