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

  • 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.

Location Chennai, Tamil Nadu, India
Job type Full time
Experience Experienced
Job function Engineering & Science
Contract Regular
Publication date 2026-04-30
Reference number R0127537

About Hitachi Energy

Hitachi Energy is a global technology leader in electrification, powering a sustainable energy future through innovative power grid technologies with digital at the core. Over three billion people depend on our technologies to power their daily lives.

With over a century in pioneering mission-critical technologies like high-voltage, transformers, automation, and power electronics, we are addressing the most urgent energy challenge of our time – balancing soaring electricity demand, while decarbonizing the power system.

Headquartered in Switzerland, we employ over 50,000 people in 60 countries and generate revenues of around $16 billion USD. We welcome you to apply today.