Senior Blockchain Developer

Boosty Labs is a premier blockchain development company with broad technical expertise and over 150 highly skilled developers and strategists. Founded in 2017, Boosty Labs has completed 250+ projects and collaborated with numerous industry giants.
Join us as a Senior Blockchain Engineer — Node.js+solidity

Requirements:

Backend part

• Strong Node.js / TypeScript experience (NestJS preferred).
• Experience building high-frequency bots that interact with blockchain.
• Understanding of RPC optimization and multicall strategies to handle millions of calls/day.
• Experience with async error handling, retries, and observability.

• Familiarity with transaction building and gas optimization for automated operations.

   

Blockchain part

• Strong understanding of Solidity smart contracts.
• Experience with contract state reading: callStatic, view functions, and event logs.
• Ability to trace calls and debug contract interactions (using tools like Foundry, Tenderly, or Etherscan traces).
•  Knowledge of DeFi primitives: vaults, lending/borrowing, swaps, collateralization.
• Ability to write efficient contract interaction logic (batching, multicall, caching).

What we offer:

• Remote working format
• Flexible working hours
• Informal and friendly atmosphere
• The ability to focus on your work: a lack of bureaucracy and micromanagement
• 20 paid vacation days
• 7 paid sick leaves
• Education reimbursement
• Free English classes
• Psychologist consultations

Recruimet process: Recruitment Interview - Techncial Interview - Client Interview