Middle Blockchain Developer
We are looking for a Middle Blockchain Developer to join our growing team and contribute to building secure, scalable, and user-focused blockchain solutions.
Responsibilities:
Develop, test, and deploy smart contracts to enable secure and decentralized application logic
Implement Web3 integrations to connect blockchain networks with web applications
Build user-friendly, responsive interfaces for seamless cross-device experiences
Design and maintain backend systems for efficient data processing and blockchain interaction
Ensure real-time synchronization and accurate management of blockchain data
Optimize application performance and resource usage
Conduct thorough testing and debugging to ensure reliability and security
Apply strong security best practices to protect smart contracts and user data
Create and maintain technical documentation for code, APIs, and features
Collaborate with developers, designers, and stakeholders to achieve project goals
Participate in presales activities, providing technical expertise and solution design support
Required Skills & Technologies:
Solidity, Rust
Smart Contracts, DApps
Ethers.js, Web3.js
JavaScript / TypeScript
Node.js, Nest.js, Express
React
Ethereum
Solana (Anchor, Solana Programs)
English level: B2
Published on: 2/2/2026

Interexy
Interexy is a mobile development company providing development services for tech startups & established businesses in Western Europe & the United States.
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