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October 8, 2026

Crypto Developer

Senior • On-site

1,300 - 1,500 PLN/yr

Warsaw, Pl-14, Poland

Quick Facts

  • Role: Crypto Developer

Description

Design, develop, and maintain enterprise-grade crypto and blockchain-based products. Build scalable, high-performing distributed systems, APIs, orchestration layers, and third-party integrations, delivering from architecture and design through deployment and production support. Ensure application security, reliability, monitoring, and high availability.

Responsibilities

  • Design, develop, and maintain enterprise-grade crypto and blockchain-based products
  • Build scalable, high-performing distributed systems, APIs, orchestration layers, and third-party integrations
  • Drive end-to-end software development from architecture and design through deployment and production support
  • Develop and enhance backend services using Java and modern engineering practices
  • Collaborate with frontend teams to deliver seamless user experiences using Angular
  • Ensure application security, reliability, monitoring, and high availability
  • Implement and maintain CI/CD pipelines, testing frameworks, and software quality standards
  • Work with cross-functional stakeholders to deliver solutions in digital payments and financial services
  • Troubleshoot complex technical issues and continuously improve system performance and scalability
  • Stay current with emerging blockchain, cryptocurrency, and financial technology trends

Requirements

  • 12+ years of work experience with a Bachelor’s Degree, or 8+ years with an Advanced Degree (Master’s, MBA, JD, MD)
  • Experience building scalable, high-performing distributed systems (APIs, orchestration layers, third-party integrations, monitoring & alerts, high availability)
  • Secure Software Development Life Cycle experience (version control, CI/CD, unit testing, performance testing)
  • Strong understanding of blockchain technologies (public and permissioned), DeFi apps, security protocols, private key custody, and distributed ledgers (Bitcoin, Ethereum, Hyperledger, etc.)
  • Strong understanding of Solidity, Assembly, and EVM technologies
  • Experience in payments and financial services compliance, payments ecosystems, and payment processing flows
  • Strong interpersonal skills: facilitation and leadership, clear written/verbal communication, and ability to influence key partners
  • Motivated and fast learner of new technologies to solve complex problems

Benefits

Not specified in the provided posting.

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