Belmont Lavan Ltd

Compensation

Full Description

We are seeking an experienced Blockchain / Web3 Developer who will design, build, test and deploy smart contracts, integrate them with front-end and back-end systems, and ensure high standards of security, performance, and usability. You will collaborate with product, UX, frontend, and backend teams to deliver production-ready features, contribute to architecture decisions, and continuously improve our Web3 stack. Key Responsibilities Design, write, and deploy secure smart contracts. Implement token standards (ERC-20, ERC-721, ERC-1155) and upgradeable contracts using libraries like OpenZeppelin. Optimise contracts for gas usage, performance, and security, including audits and peer reviews. Integrate Web3 libraries with front-end applications and wallets. Develop backend services / APIs that interact with on-chain and off-chain data. Work with Layer 2 / roll-ups / scaling solutions, bridges, and/or cross-chain integrations where required. Write automated tests, maintain CI/CD pipelines, and ensure robust coverage and code quality. Maintain clear technical documentation, and mentor more junior engineers. 5 - 8+ years experience in blockchain / Web3 development. Strong Solidity skills; experience with EVM chains; familiarity with non-EVM is desirable Proficiency in Web3 tools: Hardhat, Truffle, Foundry, etc. Experience with front-end technologies (React, Next.js )and backend. Good grasp of REST / GraphQL APIs, database work (SQL / NoSQL), and decentralised storage Solid understanding of Web3 security best practices Ability to work in an agile, collaborative team; good communication skills in English Desirable Extras Experience with gas-efficient contract design and Layer-2 roll-ups. Prior exposure to zero-knowledge proofs, account abstraction, or decentralised identity (DID) systems Open source contributions or code samples / portfolio of deployed smart contracts or projects Experience in marketplace / escrow / auction mechanics.