Smart Contract Developer
$175k - $225kSorella Labs
Join us as a Smart Contract Developer at Sorella Labs, where you will be responsible for developing and maintaining smart contracts that power our cutting-edge decentralized trading systems. This role is perfect for those with deep expertise in Solidity and a passion for creating secure, efficient, and innovative decentralized applications (dApps).This full-time role is open to remote candidates, with a preference for in-person hybrid work in our Soho, Manhattan office.Responsibilities- Design, develop, and deploy smart contracts for our decentralized trading systems and MEV-aware infrastructure- Implement and maintain Solidity-based contracts for various decentralized finance (DeFi) applications, including automated market makers (AMMs), liquidity pools, and staking mechanisms- Ensure security and resilience of contracts through thorough audits, testing, and adherence to best practices- Collaborate with backend, frontend, and protocol teams to integrate smart contracts with our overall architecture- Write comprehensive unit and integration tests for smart contracts, ensuring full test coverage- Analyze and optimize gas costs, improving the efficiency of on-chain operations- Maintain and manage contracts after deployment, ensuring continued functionality as the system evolves- Stay updated on the latest developments in Ethereum, DeFi, and smart contract best practicesQualifications- Extensive experience with Solidity and smart contract development on Ethereum- Strong understanding of the Ethereum Virtual Machine (EVM) and Solidity design patterns- Experience in designing secure and efficient smart contracts, with a solid track record in DeFi applications- Familiarity with testing frameworks such as Hardhat, Truffle, or Foundry- Ability to work effectively in an asynchronous work environment, both as part of a team and independently- Strong knowledge of security best practices for smart contract development and deployment- A passion for writing clean, efficient, and scalable Solidity codeNice to Haves- Experience with Layer 2 solutions and cross-chain protocols- Previous experience contributing to open-source projects in the Ethereum or DeFi ecosystems- Familiarity with formal verification tools and techniques- Background in mathematics or cryptography- Knowledge of MEV and its impact on Ethereum transactionsCompensation Range$175k - $225k base salary + equityThis is an expected compensation range but may vary depending on the level of experienceBenefits- New NYC office in Soho- Comprehensive health, dental, and vision- 401k + match- Gym reimbursement- Industry conference, event, and travel opportunitiesJoin Our TeamWe're about passion, impact, and real-world solutions.We value talent, an eagerness to learn, and proactivity.We're on the lookout for adaptable, fast-learning individuals keen to join us in actively shaping the future of DeFi. Whether you're a blockchain veteran or come from a background in high-frequency trading or other critical high-performance systems, your contribution will make an outsize impact.We offer- Independence and autonomy in your work- A dynamic, fast-paced environment in Manhattan's vibrant core- Total compensation that stands out above the market- Regular international travel for conferences and global team buildingWho We AreWe are a mission-driven team of established builders and researchers creating sustainable on-chain markets and experiences. Our expertise spans across several pivotal areas of Ethereum research, with a particular focus on MEV and DEX design.Operating at the front line of MEV-aware infrastructure, we have fostered strong working relationships with leading organizations like the Ethereum Foundation, Uniswap Labs, Chainbound, and Gattaca.Our contributions to the community also extend to multiple open-source projects, including:- Reth- Foundry- Alloy- Ethers-reth- Brontes, our (forthcoming) canonical MEV tracing system built on top of RethAbout Sorella LabsSorella Labs Inc. is a dual product and research organization building solutions to the hardest problems in decentralized finance.The team is currently building a robust and scalable protocol to address the two leading challenges decentralized systems pose in on-chain liquidity markets:- Loss-vs-rebalancing (LVR) for liquidity providers (LPs)- Suboptimal execution for swappers Responsibilities Design, develop, and deploy smart contracts for our decentralized trading systems and MEV-aware infrastructure Implement and maintain Solidity-based contracts for various decentralized finance (DeFi) applications, including automated market makers (AMMs), liquidity pools, and staking mechanisms Ensure security and resilience of contracts through thorough audits, testing, and adherence to best practices Collaborate with backend, frontend, and protocol teams to integrate smart contracts with our overall architecture Write comprehensive unit and integration tests for smart contracts, ensuring full test coverage Analyze and optimize gas costs, improving the efficiency of on-chain operations Maintain and manage contracts after deployment, ensuring continued functionality as the system evolves Stay updated on the latest developments in Ethereum, DeFi, and smart contract best practices Requirements Extensive experience with Solidity and smart contract development on Ethereum Strong understanding of the Ethereum Virtual Machine (EVM) and Solidity design patterns Experience in designing secure and efficient smart contracts, with a solid track record in DeFi applications Familiarity with testing frameworks such as Hardhat, Truffle, or Foundry Ability to work effectively in an asynchronous work environment, both as part of a team and independently Strong knowledge of security best practices for smart contract development and deployment A passion for writing clean, efficient, and scalable Solidity code Tech stack Smart Contracts Solidity Ethereum Blockchain Rust #J-18808-Ljbffr Sorella Labs
- ...consider building your career at Paxos Labs. We're hiring a Smart Contract Engineer to help scale Paxos Labs's DeFi protocol... ...The smart contract team at Paxos Labs consists of experienced developers who have shipped multiple decentralized primitives from lending...SuggestedFull timeContract workRemote work
- ...Job Description Job Description Hiring a web3 developer who is experienced with writing smart contracts in solidity for Ethereum. Must also have familiarity with NFTs and current NFT trends. Responsibilities Handling the entire web3 portion of our site....SuggestedContract work
$290k - $325k
...join Uniswap, you become part of a team that's reshaping the way value flows on the internet. We are looking for an experienced smart contract engineer to help us build the next generation of the Uniswap Protocol. You will be responsible for implementing and designing...SuggestedFull timeContract workFor contractorsRemote workHome officeVisa sponsorship$170k - $250k
...grade perpetual futures to Solana. Building on our experience developing efficient markets, Ellipsis Labs also operates SolFi, a... ...Solana markets. Opportunity Ellipsis Labs is seeking an SVM Smart Contract Engineer to join our team. In this role, you will: Develop and...SuggestedContract work- About the job Cata Labs, the team behind Catalyst, is seeking a talented Senior Smart Contract Developer (Web3 Engineer) to join our growing team. As a Smart Contract Developer, you will play a key role in developing and maintaining the smart contracts that power Catalyst...SuggestedRemote jobContract workFlexible hours
$226k - $282k
...join Uniswap, you become part of a team that's reshaping the way value flows on the internet. We are looking for an experienced smart contract engineer to help us build the next generation of the Uniswap Protocol. You will be responsible for implementing and designing...Full timeContract workRemote workHome office- ...Solidity Engineering at Sei Sei Labs is looking for a Solidity / Smart Contracts Engineer to help shape the future of Web3 by building... ...technology, collaborating closely with our ecosystem partners to develop cutting-edge dApps spanning diverse Web3 domains (from DEX’s...Contract workTemporary workRemote work
- ...Job Description Job Description Contract EQD Rapid Application Developer (RAD) MUST be local to NYC, 100% Onsite Required skills: Python Object oriented programming, Asynchronous programming, Data structures Preferred skills: Experience with derivatives...Contract workLocal area
- Job ID: 28999153Reference Number: 26-00725Title: Contract Role Of Data Engineer RemotePosted Date: 2026-08-04Contact: Vishika ChaudharyContact... ...solutions and data pipelines.Key ResponsibilitiesDesign and develop ETL/ELT pipelines using DataStage, Snowflake, and dbt.Build and...Contract workWork at officeRemote work
$40 - $50 per hour
...USA believes that diversity and inclusion among our team are critical to our success as a global company, and we seek to recruit, develop and retain the most talented people from a diverse candidate pool. At PharmaEssentia, our goal is to treat as many people with cancer...Hourly payPermanent employmentContract workWork at officeRemote work$10k
About RampRamp is building the smart infrastructure for finance teams, embedded in the transaction flow of every dollar a business spends. We automate how over $200B in annualized spend flows in and out of 70,000+ companies: authorizing payments, flagging risk, categorizing...Full timeWork at officeRelocationHome officeFlexible hours$200k - $300k
...skilled Research Engineers who will work very closely with our Algo Developer (Quant Research) trading teams. These roles require exceptional... ...process.Kindness and empathy is a real requirement. No “smart jerks” at HRT. Strong understanding of data structures, algorithms...Temporary workWork at officeLocal areaImmediate start- United States Digital Space LLC is seeking experienced Software Engineers to support AI research through flexible, hourly contract work. This role is not traditional; it allows for project-based contributions while maintaining other employment. Qualified candidates will...Remote jobHourly payContract workFlexible hours
- ...students. As a new analyst, you will learn about our businesses, develop important relationships, and build career-enhancing skills.As a... ...environment requires strategic thinking that is innovative and produces smart solutions. At Goldman Sachs, our Engineers don’t just make...Full timeImmediate start
$75 - $100 per hour
A technology company based in Brooklyn is seeking a contract systems engineer for a 6-9 month engagement. The candidate should have 5... ...Engineering. Responsibilities include designing electronic circuits and developing embedded low power circuits. The position requires onsite work...Contract work$75 - $100 per week
A leading educational institution is seeking a contract systems engineer in Brooklyn for a 6-9 month engagement, potentially transitioning... ...circuits and collaborating with multidisciplinary teams to develop cutting-edge technology. Candidates should have 5-10 years of experience...Hourly payFull timeContract work$15 per hour
...Have experience creating multiple-choice questions, study materials, PowerPoint presentations, or other similar content. This is a contract (1099) position. Projects will be assigned via separate contracts with discrete schedules and deliverables. There is no set...Hourly payFull timeContract workFor contractorsRemote workFlexible hours- ...States Digital Space LLC is seeking experienced Software Engineers based in Canada to assist with AI research through flexible, hourly contract work. You will evaluate AI-generated code, provide feedback, and enhance AI understanding of programming tasks and engineering...Remote jobHourly payContract workPart timeFlexible hours
- ..., our talent is live, the players are virtual. Evolution is a developer and supplier of virtual casino games, since 2006. We evolve the... ....Cooperates with internal and external parties (suppliers, contract partners etc.)Supports Equipment Unit globally, provides technical...Contract work
- Korn Ferry is seeking a Contract Recruiter to support Manufacturing/Engineering hiring across our RPO client, focusing on multi-channel sourcing and candidate relationship management. This remote role supports Eastern or Central Time Zones and emphasizes a high-touch recruitment...Remote jobContract work
- ...manufacturing and quality teams to meet 24x7 production needs. You will provide SME input for equipment and facility commissioning, qualification, and validation, develop procedures, and maintain preventive maintenance plans while collaborating #J-18808-Ljbffr BeiGene, Ltd.
$100k - $220k
...Support: Full visa sponsorship and private medical insurance. The Environment: Free meals and a seat at the table with an incredibly smart, ambitious team. Ready to define the future of Intellectual Property? Apply now. Compensation Range: $100K - $220K...Work at officeVisa sponsorship- ...alternatives Prepare and evaluate wet weather control alternatives Develop and complete applications, permits, engineering reports and... ...Additional Preferred Experience: Real-time control (RTC) or smart sewer systems Construction phase services (RFIs, submittals,...Temporary workWork at officeWork from homeFlexible hours3 days per week
- ...States Digital Space LLC is seeking experienced Software Engineers residing in LATAM to support AI research through flexible, hourly contract work. This is not a traditional full-time SWE role. You’ll use real-world software development experience to evaluate AI-generated...Remote jobHourly payFull timeContract workFlexible hours
$102.1k - $136.9k
...for millions of consumers around the world across Apple, Android, Smart TVs, game consoles, and the web, with our platforms powering... ...Entertainment, to ESPN and ESPN+, and much more.Innovation: We develop and execute groundbreaking products and techniques that shape industry...Work experience placementWorldwide- ...and see how the front end connects to the whole system. High agency: you take an ambiguous problem, ask the right questions, make smart assumptions, and move — you don't wait for a perfect spec. Genuinely AI-native: you already build with the most advanced AI coding...
- ...Anticipated Start Date: 2/6/2026 Expected Duration: 7 Months Job Type: Contract - [FULL TIME (40 Hours a week)] What the role is Looking for a... ...to design and ship wearable consumer electronics (like smart bands, EMG wearables, and smartwatches). You’ll work end-to-end...Full timeContract work
- ...take talent density seriously. We like working with incredibly smart, driven people. Velocity: we work fast, which means you learn... ...lot and constantly take on more. Frontier technology: we\'re developing cutting-edge AI systems, pushing the boundaries of reinforcement...Relocation
- ...Responsibilities/Principal Duties Work with Project Engineers to develop and design new parts and systems related to overhead doors Use... ...”: We invest heavily in automation, sustainable materials, and smart‑home integration to stay ahead of the curve. Commitment to People...Temporary work
$105.4k - $124k
...optimization initiatives using modern technologies including Tungsten, Azure, AI/ML, and Generative AI solutions.This person will design, develop, enhance, and support Intelligent Document Processing solutions that automate the handling of complex business documents. They will...Full timeLocal area3 days per week
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Smart Contract Developer. Be the first to apply!

