Mid-Senior Crypto & Blockchain Developer

Alois Solutions — Poland · Posted ~6 hours ago

Senior Full-time

Skills

blockchain cryptocurrency Java backend development distributed systems APIs system architecture CI/CD application security Angular RabbitMQ

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Summary ✨ AI‑Generated

An experienced engineering role focused on scalable, secure enterprise solutions across blockchain, digital payments, and financial services. You will develop high-performance products and distributed backend systems with Java, build APIs and integrations, collaborate with frontend engineers, and contribute throughout the full software development lifecycle.

Highlights

Build scalable and secure enterprise solutions spanning blockchain, digital payments, and financial services, with ownership across architecture, development, deployment, and production support.

Description

About the role : We are looking for an experienced Crypto & Blockchain Developer to join our team and build scalable, secure, enterprise-grade solutions across blockchain, digital payments, and financial services. Key Responsibilities Design and develop high-performance blockchain and crypto-based products.Build scalable distributed systems, APIs, orchestration layers, and third-party integrations.Develop robust backend services using Java and modern engineering practices.Collaborate with frontend teams using Angular to deliver seamless user experiences.Work across the complete SDLC including architecture, development, testing, CI/CD, deployment, and production support.Ensure security, high availability, monitoring, and performance of enterprise applications.Troubleshoot complex technical challenges and drive continuous improvement.Collaborate with stakeholders across payments, fintech, and financial services. Key Skills & Experience 8+ years of relevant experience with an advanced degree OR 12+ years of experience with a Bachelor's degree.Strong experience in Java, distributed systems, APIs, microservices, and high-availability applications.Hands-on knowledge of Blockchain, Crypto, DeFi, Distributed Ledgers, and Web3.Strong understanding of Bitcoin, Ethereum, Hyperledger, Solidity, EVM, and smart contracts.Experience with private key custody and blockchain security protocols.Strong knowledge of CI/CD, version control, unit testing, and performance testing.Experience in payments, payment processing, fintech, or financial services.Angular / full-stack development experience is highly preferred.Strong problem-solving, communication, stakeholder management, and leadership skills.