Web3 developer

Job Description: Web3 Developer

Position: Web3 Developer (Solidity or Rust)

Company: https://castorweb.eu

Location: Remote

About the Role

We are looking for a talented Web3 Developer to join our growing team building next-generation fintech and decentralized finance solutions. You will work on smart contracts, blockchain infrastructure, and full-stack Web3 applications.

Key Responsibilities

Design and develop secure smart contracts (Solidity or Rust)
Build and optimize DeFi protocols, token systems, and presale platforms
Integrate blockchain with frontend (React/Web3.js) and backend systems
Develop scalable dApps and API integrations
Ensure high security standards, testing, and best practices
Collaborate on architecture decisions for fintech and crypto projects

Requirements

Strong experience with Solidity and/or Rust for smart contracts
Hands-on experience with Solana, Ethereum, or EVM-compatible chains
Proficiency in React.js, Web3.js / Ethers.js, and backend technologies (Node.js / PHP)
Solid understanding of DeFi, tokens, and blockchain architecture
Experience with testing, security audits, and deployment pipelines
Self-motivated, detail-oriented, and able to deliver high-quality code

What We Offer

Remote work with flexible hours
Opportunity to work on cutting-edge Web3 and fintech projects
Competitive compensation
Direct impact on real-world blockchain products