Smart Contract Engineer

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DeFi Backend Engineer at Paxos Labs building infrastructure to scale DeFi capabilities. Collaborating with quantitative researchers and automating onchain interactions for financial products.

Posted 5/15/2026full-timeRemote • New York • 🇺🇸 United StatesMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

CloudDockerKubernetesPostgresSoliditySQL

About the role

Key responsibilities & impact

You’ll design, implement, and deploy Solidity-based contracts that are both elegant and hardened against exploits.
Contribute to protocol-level infrastructure, tooling, and new features that directly impact millions of users.
Investigate vulnerabilities, simulate attack scenarios, and develop effective mitigation strategies.
Participate in rigorous code reviews to ensure quality, security, and maintainability.
Keep up with the latest EVM developments, tooling, and best practices—and bring that knowledge back to the team.
Share your expertise with other engineers and work closely across product, design, and operations to bring ideas to life.

Requirements

What you’ll need

4+ years of experience writing and deploying Solidity smart contracts in production.
Strong understanding of the EVM, DeFi protocols, and decentralized application architecture (including decentralized exchanges – Uniswap V2 + V3, Uniswap X, dYdX v4, etc.).
A security-first mindset, with an obsession for catching vulnerabilities before they’re exploited.
A track record of delivering high-quality, reliable code in fast-moving environments.
A passion for DeFi, Ethereum, and building at the bleeding edge of web3.
Excellent problem-solving and communication skills.
(Plus) Experience with prediction markets.
(Plus) Experience with formal verification tools or advanced Solidity security techniques.
(Plus) Contributions to open-source DeFi projects.
(Plus) Familiarity with multiple EVM chains and bridging solutions.

Benefits

Comp & perks

Competitive salary & equity
Unlimited PTO
Health, Vision, & Dental coverage
401k match
Hardware setup — new MacBook Pro, big display, & accessories

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

Soliditysmart contractsEVMDeFi protocolsdecentralized application architecturecode reviewsvulnerability investigationmitigation strategiesformal verification toolsadvanced Solidity security techniques

Soft Skills

problem-solvingcommunicationcollaborationattention to detailsecurity-first mindset