Blockchain Developer

Genesis NGN is seeking a Blockchain Java Backend Developer to design and maintain backend services interacting with blockchain networks. Strong Java experience and knowledge of blockchain technologies are required.

### Key Responsibilities - Design and develop secure, scalable backend services in Java to interact with blockchain networks. - Build RESTful APIs and microservices to support blockchain-based applications. - Develop and integrate smart contracts using blockchain platforms such as Ethereum or Hyperledger Fabric. - Implement transaction processing, wallet integration, and blockchain node communication. - Ensure security, cryptography, and data integrity in blockchain applications. - Optimize system performance for high-throughput distributed environments. - Collaborate with frontend developers, DevOps teams, and blockchain architects. - Write unit tests, integration tests, and documentation. - Participate in architecture discussions and code reviews.

### Required Skills & Qualifications - Strong experience with Java backend development (Java 8+). - Experience with frameworks such as Spring Boot or Spring Framework. - Hands-on experience with blockchain platforms like: - Ethereum - Hyperledger Fabric - Corda (optional). - Experience with smart contracts (e.g., Solidity). - Knowledge of cryptography, consensus mechanisms, and distributed ledgers. - Experience building REST APIs and microservices. - Familiarity with Docker, Kubernetes, and cloud platforms. - Experience with relational or NoSQL databases.

### Preferred Skills - Experience with Web3 libraries such as Web3j. - Knowledge of DeFi, NFTs, or token standards (ERC-20 / ERC-721). - Experience with CI/CD pipelines and DevOps practices. - Understanding of event-driven architecture and messaging systems. ### Education - Bachelor’s or Master’s degree in Computer Science, Information Technology, or related field.

Genesis NGN is an IT consulting company offering Enterprise Application Solutions, Enterprise Integration Solutions, Managed Services, and Talent Solutions with a niche focus on Big Data, Information Management, MDM, Cloud, and Mobility technologies. They implement innovative technology solutions for industries including Banking & Finance, Insurance, Hi-tech, Defense, Telecom, Pharma & Healthcare, Manufacturing, Retail, and CPG. The company helps clients achieve digital transformation and scale operations, such as revamping OTT platforms for millions of users.