Blockchain Web3 Developer
Belmont Lavan
11 months
TX Texas City US
•
$60K-$100K
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
Requirements
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
When applying, mention the word CANDYSHOP to show you read the job post completely.
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
Requirements
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
When applying, mention the word CANDYSHOP to show you read the job post completely.