Design, build, and maintain scalable Java Spring Boot backend microservices integrated with blockchain/Web3 infrastructure. Develop REST APIs, event-driven systems (Kafka/JMS), SQL/NoSQL data stores, and containerized cloud deployments (Kubernetes). Ensure performance, security, and reliability while collaborating with cross-functional teams in Agile environments.
Job Title: Blockchain + Java Backend Developer
Experience: 4–7 Years
Employment Type: Full-Time
We are looking for a highly motivated Blockchain + Java Backend Developer to join our Digital Assets Platform engineering team. The ideal candidate should have strong expertise in Java backend development along with hands-on experience in blockchain technologies and Web3 infrastructure.
You will be responsible for designing, developing, and maintaining scalable enterprise-grade backend applications that leverage blockchain technology. This role requires a solid understanding of distributed systems, microservices architecture, blockchain fundamentals, and cloud-native application development.
If you're passionate about building secure, high-performance backend systems and want to work on next-generation digital asset platforms, we'd love to hear from you.
Key Responsibilities- Design, develop, and maintain scalable backend services using Java and Spring Boot.
- Build enterprise-grade applications leveraging blockchain and distributed ledger technologies.
- Collaborate with architects, product managers, and cross-functional engineering teams to deliver high-quality software solutions.
- Develop RESTful APIs and microservices following industry best practices.
- Design and implement event-driven architectures using Kafka or JMS.
- Integrate blockchain networks and Web3 infrastructure into enterprise applications.
- Ensure application reliability, scalability, security, and performance.
- Develop and optimize SQL and NoSQL database solutions.
- Deploy and manage containerized applications using Kubernetes.
- Participate in code reviews, testing, debugging, and technical documentation.
- Work in Agile development environments using tools such as Jira and Git.
- Bachelor's degree in Computer Science, Engineering, or a related field.
- Master's degree is a plus.
- 4–7 years of software development experience.
- 3–5 years of hands-on experience in Java backend development.
- Up to 2 years of experience working on Blockchain/Web3 applications.
- Experience in Financial Services or FinTech is an added advantage.
- Core Java (Java 8/11/17)
- Spring Boot
- Spring Framework
- REST APIs
- Microservices Architecture
- JPA / Hibernate
- Apache Kafka
- JMS
- SQL (MySQL/PostgreSQL)
- NoSQL (MongoDB)
- AWS or Azure
- Kubernetes
- Docker (Preferred)
- CI/CD fundamentals
- Git
- GitHub / Bitbucket
- Jira
- IntelliJ IDEA / Eclipse
- Strong understanding of Blockchain architecture and Distributed Ledger Technology (DLT).
- Experience with Web3 infrastructure and Digital Asset platforms.
- Knowledge of Ethereum, Hyperledger Fabric, Polygon, or similar blockchain platforms.
- Understanding of consensus mechanisms (PoW, PoS).
- Knowledge of cryptographic principles.
- Understanding of peer-to-peer (P2P) networks.
- Familiarity with Smart Contracts is preferred.
- Exposure to Zero-Knowledge Proofs (ZKP) is an advantage.
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