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About the role
Location: Chennai, Tamil Nadu, India Job ID: R0127537 Date Posted: 2026-04-30 Company Name: HITACHI ENERGY TECHNOLOGY SERVICES PRIVATE LIMITED Profession (Job Category): Engineering & Science Job Schedule: Full time Remote: No Job Description: Design, write, and optimize PostgreSQL queries including: Stored functions Triggers Views Complex joins and window functions High-performance queries
Optimize PostgreSQL performance through: Index tuning Query plan analysis Partitioning (when needed)
Build backend services using C# .NET and Python , integrating with PostgreSQL. Develop and maintain GraphQL APIs using Hasura connected to PostgreSQL. Apply strong transaction handling, error control, and concurrency management. Build both REST and GraphQL endpoints with proper validations and structured responses. Maintain database schemas, table designs, and relational structures. Troubleshoot issues related to: PostgreSQL performance Hasura metadata or GraphQL behavior Backend API logic Write unit tests, integration tests, and database tests. Document SQL routines, backend logic, and GraphQL schema structures.
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