Java Developer

EPAM Systems is a leading global provider of digital platform engineering and software development services. The company delivers creative and cutting-edge solutions across various business domains, including life sciences, healthcare, retail, and hi-tech, while maintaining a dynamic and inclusive culture for its multi-national teams.

• Lead development of backend services for stablecoin lifecycle management including issuance, redemption, freezing, and audit;
• Oversee custodial wallet backend development covering architectures like multisig, MPC, and account abstraction;
• Drive backend development for a crypto-acquiring platform including merchant onboarding, POS integrations, and transaction processing;
• Develop blockchain integrations using web3j for Ethereum/Besu and smart contract interactions;
• Implement RESTful APIs and gRPC services for internal and external system integrations;
• Coordinate with mobile development teams for banking application integrations and API design;
• Build secure key management and signing services integrated with HSM and MPC solutions;
• Optimize backend performance for high-throughput transaction processing;
• Lead and mentor the development team, ensuring code quality standards and best practices.

• Extensive backend development experience with a significant background in blockchain/cryptocurrency projects;
• Strong proficiency in Java and Spring Boot;
• Hands-on experience with Web3J or similar blockchain integration libraries;
• Deep understanding of EVM, transactions, gas optimization, and smart contract interactions;
• Understanding of different wallet architectures and custody models;
• Experience with smart contract development, role-based access control, and tokenization systems;
• Knowledge of payment processing, POS integrations, and acquiring systems;
• Strong experience with microservices architecture, API design, and enterprise integration patterns;
• Experience with mobile application backend development and API design for mobile clients;
• Proficiency in database design and optimization including PostgreSQL, MongoDB, and Redis;
• Experience leading development teams and mentoring junior developers;
• English proficiency at B2 level or higher;
• Nice to have: Experience with Hyperledger Besu, backend development for mobile applications in Go, publishing mobile apps to app stores, HSM integration, hardware security modules, MPC implementations, account abstraction, keyless wallet architectures, POS systems, payment terminal integrations, financial regulations, compliance requirements for digital assets, high-throughput financial systems.

• 25 Days holiday per annum;
• 5 Days of sick leave without medical certification;
• Private health insurance for employees and discount for family members;
• Discount for Fit Pass program;
• Access to in-house professional training, career advisory, coaching, and sponsored professional certifications;
• English language courses;
• Knowledge-sharing within global tech communities;
• Regular corporate and social events;
• Learning programs for kids.