[Skip to main content](#main-content) [OpenNash Jobs](https://jobs.opennash.com/) [Hiring report](/reports/hiring/) · [All Tata Consultancy Services jobs](https://jobs.opennash.com/companies/tata-consultancy-services/) · [Search jobs](/search/) Tata Consultancy Services · Jersey City, NJ # Engineer Jersey City, NJ $90,000-$100,000 Operations Last seen on Tata Consultancy Services’s official careers site on August 1, 2026; it may have closed since. [Apply on Tata Consultancy Services’s careers site →](https://ibegin.tcsapps.com/candidate/jobs/420118J) [OpenNash Jobs](https://jobs.opennash.com/) / [Tata Consultancy Services](https://jobs.opennash.com/companies/tata-consultancy-services/) / Engineer ## Job description Blockchain Java Backend Developer Must Have Technical/Functional Skills Core Backend Skills - Strong proficiency in Java (8+), and frameworks such as Spring Boot / Spring Cloud. - Experience building distributed systems and microservices architectures at scale. - Strong knowledge of: - Concurrency, multithreading, asynchronous programming o API design (REST/gRPC), security (OAuth2/JWT), and integration patterns ### Solid understanding of data stores - o SQL (PostgreSQL/MySQL) and/or NoSQL (MongoDB/Cassandra) - Caching (Redis) and search (Elasticsearch) is a plus ### Hands-on experience with message streaming/queues - Blockchain Skills (Must-Have) ### Strong understanding of blockchain fundamentals - Transactions, blocks, confirmations/finality, consensus, gas/fees, wallets, keys. ### Experience integrating backend services with blockchain networks/nodes - Ethereum-compatible networks (Ethereum/Polygon/BSC) using Web3j, ethers-style approaches o and/or permissioned chains (Hyperledger Fabric, Corda, Quorum) ### Experience supporting large blockchain deployments - Node connectivity, RPC management, event indexing, chain reorg handling, retry strategies. ________________________________________ DevOps / Cloud (Preferred) - Experience with Docker and Kubernetes for containerized microservices deployments. - CI/CD exposure (Jenkins/GitHub Actions/GitLab CI/Azure DevOps). - Cloud experience (Azure/AWS/GCP) is a plus. ### Understanding of security practices - Secrets management (Vault/KMS), TLS, RBAC, network security. ### Roles & Responsibilities - Design and develop Java-based backend services that interact with blockchain networks and nodes (public or permissioned). - Build and scale microservices-based architecture supporting blockchain transaction workflows, event processing, and off-chain components. - Develop reliable services for: - Transaction orchestration - Smart contract invocation - Blockchain event subscription/listening - On-chain/off-chain data synchronization - Implement scalable APIs (REST/gRPC) for blockchain-enabled products and integrations. ### Optimize performance for high throughput and low latency - Transaction throughput handling, batching, retries, idempotency, rate limiting. ### Ensure secure integration with blockchain - Key management best practices, signing transactions, secure secret handling. ### Implement observability and reliability standards - Logging, monitoring, tracing, alerting, SLOs/SLAs. - Work with DevOps/SRE teams to support production deployments, incident triage, and capacity planning. ### Contribute to architecture decisions including - Event-driven architecture (Kafka/RabbitMQ), caching strategies, database selection, and deployment topologies. Salary Range- $90,000-$100,000 a year