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Solidity Developer

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Serokell

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IT - Software Development

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Job Description:

Serokell is a fast-growing, fully remote software development company that works on innovative solutions for complex problems. We’re packed full of adventurous, curious, and inclusive folks who want to build cutting-edge software with modern technologies like functional programming. We’re seeking a middle to senior level Solidity Developer to join a team of fierce and fun Serokellers.

Job Responsibility:

  • Create and implement secure and efficient Solidity contracts, ensuring scalability, reliability, and maintainability
  • Integrate contracts with EVM blockchain networks, often involving backend or frontend work
  • Review and audit code
  • Develop and execute unit tests, integration tests, and end-to-end tests
  • Write documentation for code, including design specs, user guides, and API documentation
  • Stay updated on developments in Solidity, Ethereum, and EVM-related technologies, cryptographic methods, and relevant programming languages
  • Optimize code performance and gas efficiency
  • Implement and enforce security best practices to protect contracts from common vulnerabilities
  • Provide ongoing support and maintenance for deployed applications, addressing user-reported issues and bugs

Requirements:

  • Fluency with Ethereum or another EVM-based blockchain ecosystem
  • 3+ years in professional software development
  • 2+ years of professional experience writing, testing, and deploying Solidity contracts, including production deployments
  • Hands-on experience with Hardhat or Foundry (preferred)
  • Truffle/Remix acceptable
  • Security best practices for Ethereum/EVM smart contracts
  • familiarity with common DeFi patterns is a plus
  • Knowledge of popular token standards such as ERC-20, ERC-721, and ERC-1155
  • Experience developing and integrating decentralized applications, both backend and frontend
  • Basic understanding of cryptography primitives: public/private keys, signing, encryption, hashing
  • Knowledge of fundamental algorithms and data structures like hash tables, binary search trees, DFS, quicksort
  • Strong coding practices, including clean code structure, use of git, pull requests, and code review
  • Fluent English, strong communication and collaboration skills
  • Comfortable with daily stand-ups and asynchronous updates
  • Full-time commitment, around 35–40 hours per week
  • Comfortable overlapping with US time zones (UTC 0 to UTC -8) for at least half of the day

Nice to have:

  • Knowledge of TypeScript, Haskell, Rust, or OCaml
  • Experience conducting security audits and identifying vulnerabilities
  • Understanding of computer networks, HTTP, TCP/IP stack, and data synchronization models used in modern service APIs
  • Familiarity with build/deploy automation tools and CI/CD systems such as Docker, Nix, Kubernetes
What we offer:
  • Competitive compensation
  • Engaging international projects
  • Participation in leading global conferences
  • International and multicultural teams
  • Fully remote work with schedule flexibility

Additional Information:

Job Posted:
March 13, 2026

Employment Type:
Fulltime
Work Type:
Remote work
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