R&D Senior Engineer- Senior DB and Backend Developer -India Development Center

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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