Software Engineer (Web3)

Location: Poland for employees hired to work from Poland.

Salary: PLN 300,000–3,800,000 gross annually, plus potential bonus, equity, and benefits.

Company

hirify.global provides secure digital asset and cryptocurrency infrastructure for financial institutions, banks, brands, and Web3 companies.

What you will do

• Design and build scalable backend services for high-volume on-chain transaction flows across EVM and non-EVM networks.
• Own backend components and APIs from architecture decisions through production deployment.
• Lead integrations with DeFi protocols, on-chain data sources, blockchain nodes, and multiple chain ecosystems.
• Research emerging blockchain technologies, protocols, and standards.
• Optimize production systems for performance, reliability, security, latency, and throughput.
• Collaborate with product, protocol research, and platform engineering teams to deliver features at scale.

Requirements

• 7+ years of experience as a backend or full-stack engineer.
• Bachelor of Science degree or equivalent experience.
• Deep blockchain and Web3 experience, including transaction lifecycles, consensus mechanisms, smart contract interactions, and on-chain data.
• Experience with multiple blockchain ecosystems, including EVM-compatible chains and non-EVM chains such as Solana, TON, or Tron.
• Proficiency in Node.js and TypeScript, plus experience with production microservices and CI/CD.
• Strong understanding of security principles and cryptography in blockchain systems.

Nice to have

• Experience with DeFi protocols such as AMMs, lending markets, bridging infrastructure, or on-chain routing.
• Experience with Web3 tooling and libraries including ethers.js, viem, web3.js, or Solana web3.js.
• Full-stack experience with React and frontend development.

Culture & Benefits

• Work on blockchain infrastructure supporting institutional and retail DeFi use cases.
• Collaborate with engineers, protocol researchers, and product specialists in a fast-growing global company.
• Competitive compensation with meaningful equity, potential target bonus, and generous benefits.
• Culture emphasizing ownership, initiative, technical curiosity, reliability, and long-term code quality.