Boosty Labs

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


    Requirements:

• 5+ years of professional software engineering experience
• Golang – Expert-level proficiency with production experience in systems programming
• Bitcoin – Hands-on experience with UTXO and/or Lightning Network
• Strong understanding of cryptographic primitives and their applications
• Knowledge of P2P networking and distributed systems
• Experience with blockchain node infrastructure and RPC implementations
• Familiarity with Bitcoin internals and execution environments
• Upper-Intermediate English
  
  Nice to have:
• Contributions to major blockchain open-source projects
• Experience with formal verification methods
• Background in cryptography research or protocol design
  
  Responsibilities:
  Core Development:
• Design, implement, and optimize blockchain protocol components using Golang

• Contribute to consensus mechanism development and optimization

  System Architecture:

• Design scalable and secure protocol architectures
• Optimize performance for throughput, latency
• Ensure protocol security through threat modeling and security reviews

• Collaborate on cross-layer integration between L1 and L2 systems

  Quality & Documentation:

• Write comprehensive technical documentation for protocols and implementations
• Develop testing frameworks for protocol validation and verification
• Conduct code reviews focusing on security and performance

• Contribute to protocol specifications and improvement proposals

  Collaboration & Innovation:

• Participate in protocol design discussions and architecture decisions
• Mentor junior engineers on blockchain and scalability technologies
• Engage with the broader blockchain developer community
  
  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

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

We are seeking an experienced Senior Smart Contract Developer with deep expertise in Solidity and Ethereum-based development. You will be responsible for designing, developing, auditing, and deploying secure and efficient smart contracts that power our decentralized applications and blockchain-based solutions.

Requirements:

• 5+ years of experience in software development, with 3+ years focused on Solidity and Ethereum.
• Strong understanding of EVM, smart contract design patterns, and security best practices (e.g., reentrancy, overflow, access control).
• Hands-on experience with Hardhat, Foundry, Truffle, or Brownie.
• Familiarity with web3.js / ethers.js for contract interaction.
• Experience deploying and managing contracts on mainnet and testnets.
• Solid understanding of DeFi, NFTs, or Layer-2 scaling solutions.
• Strong problem-solving and analytical skills.
• Excellent communication and teamwork abilities.
• Upper Intermediate English

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

Recruitment process: Recruitment interview - Technical interview

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 Middle Full-stack Developer — Node.js +React.js.


Requirements:

• 3+ years of professional experience in Full-stack development
• Experience in the web3 domain
• Strong knowledge of Node.js and React
• Experience building RESTful APIs and/or GraphQL services.
• Knowledge of databases
• Experience with ORM/ODM frameworks (Sequelize, TypeORM, Mongoose, Prisma, etc.).
• Experience with unit and integration testing
• Hands-on experience with Git and modern CI/CD workflows.
• Understanding of Docker and containerized environments.

• Upper Intermediate English

   

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

Recruitment process: Recruitment interview - Technical interview

Boosty Labs is a premier blockchain development company with broad technical expertise and over 150 highly skilled developers and strategists on the team. Founded in 2017, Boosty Labs has successfully completed 250+ projects and collaborated with numerous industry giants, including Ledger, Consensys, Coinbase, Samsung, MoonPay, and Storj.

Requirements:
 

• 3+ years of experience in the software development industry (outsourcing companies) in the position of Business Analyst
• Understanding of Blockchain principles, DeFi & NFT meanings, what are cross-chain communications, Ethereum, Polkadot & substrate-based chains, what is L2 infrastructure and what for, what are ZK rollups, and ZK in general
• Basic understanding of the crypto systems;
• Ability to work independently and within a team environment
• Experience of handling Requirement Management during SDLC
• Experience with Jira & Confluence
• Knowledge of the Documentation and Requirement elicitation techniques
• Strong analytical and problem-solving skills
• Experience with Agile development methodologies
• Excellent written and verbal communication skills
• Experience working over Presales (As activity between projects)
• Upper-Intermediate English

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

Recruitment process: Recruitment interview - Technical interview