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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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