About the company
Polygon Labs develops Ethereum scaling solutions for Polygon protocols. Polygon Labs engages with other ecosystem developers to help make available scalable, affordable, secure and sustainable blockchain infrastructure for Web3. Polygon Labs has initially developed a growing suite of protocols for developers to gain easy access to major scaling solutions, including layer 2s (zero-knowledge rollups and optimistic rollups), sidechains, hybrid chains, app-specific chains, enterprise chains, and data availability protocols. Scaling solutions that Polygon Labs initially developed have seen widespread adoption with tens of thousands of decentralized apps, unique addresses exceeding 225 million, over 1.2 million smart contracts created and 2.56 billion total transactions processed since inception. The existing Polygon network is home for some of the biggest Web3 projects, such as Aave, Uniswap, and OpenSea, and well-known enterprises, including Robinhood, Stripe and Adobe. Polygon Labs is carbon neutral with the goal of leading Web3 in becoming carbon negative.
Job Summary
Your Responsibilities
šImplement wallet and transaction features that enable stablecoin payments, cross-chain bridging, and programmable flows. šIntegrate third-party wallet SDKs and APIs from key partners like Crossmint to support onboarding, compliance flows, and seamless fiat on/off ramps. šDevelop robust backend infrastructure and services to enable secure transaction execution, smart contract interactions, and vault access. šCollaborate closely with smart contract engineers to connect on-chain logic with performant backend and frontend systems. šWork side-by-side with frontend engineers to deliver secure, fast, and delightful user experiences. šContribute to architectural decisions that prioritize scalability, security, code quality, and system reliability across the stack.
What Youāll Need
š4+ years of full stack engineering experience, ideally in crypto, fintech, or API-intensive environments. šStrong proficiency with modern TypeScript and frameworks such as Node.js, NestJS, or similar. šHands-on experience integrating third-party SDKs (wallets, bridges, KYC tools) into production-grade systems. šSolid understanding of Ethereum and EVM-compatible smart contracts and how to interact with them via backend/frontend code. šFamiliarity with secure key management systems, vault integrations, or encrypted storage solutions. šProven ability to ship clean, maintainable, production-ready code in a fast-paced, collaborative setting.
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