Blockchain Developer

LINKWarszawanofluffjobspublished 10/28/2026
Must-have:TypeScriptJavaScriptPythonRustGitCloudCI/CDSecurity

Your tasks

We are looking for a Blockchain Developer to design, develop, and maintain blockchain-based applications and decentralized solutions. The ideal candidate has strong software engineering skills, experience with smart contracts, and an understanding of blockchain architecture and security principles.

  • Design, develop, test, and deploy blockchain applications and smart contracts.
  • Build and maintain decentralized applications (dApps) and blockchain integrations.
  • Work with blockchain protocols, distributed systems, and cryptographic mechanisms.
  • Develop and integrate APIs connecting blockchain solutions with external systems.
  • Optimize smart contract performance, scalability, and transaction costs.
  • Conduct code reviews, testing, and security assessments to ensure code quality.
  • Collaborate with product managers, architects, and other developers to deliver reliable solutions.
  • Stay up to date with emerging blockchain technologies and industry best practices.

Requirements

  • Professional experience in software development, preferably in blockchain projects.
  • Knowledge of blockchain architecture, distributed ledgers, and consensus mechanisms.
  • Hands-on experience developing and deploying smart contracts.
  • Proficiency in at least one relevant programming language, such as Rust, Python, Go, or JavaScript/TypeScript.
  • Experience with blockchain development frameworks, APIs, and testing tools.
  • Understanding of cryptography, wallet integrations, and blockchain security.
  • Familiarity with Git, automated testing, and CI/CD practices.
  • Good problem-solving skills and the ability to work independently and collaboratively.
  • Experience with Ethereum, EVM-compatible networks, or other blockchain platforms.
  • Knowledge of Web3 libraries and tools, such as ethers.js, Hardhat, or Foundry.
  • Experience with DeFi, tokenization, NFTs, or other blockchain use cases.
  • Familiarity with Layer 2 solutions, cross-chain integrations, and scalability mechanisms.
  • Experience with cloud infrastructure and containerization technologies.
  • Understanding of smart contract auditing and security best practices.

Must have: Blockchain, Smart Contracts, Rust, Python, Go, JavaScript, TypeScript, Testing, Cryptography, Security, Git, Automated testing, CI/CD

Nice to have: Ethereum, Web3, Use cases, Cloud

What we offer

  • The opportunity to work on innovative blockchain solutions.
  • A collaborative engineering environment.
  • Opportunities for professional development and learning.
  • The chance to contribute to the design and implementation of modern distributed systems.