Database Engineer

Harbinger Systems; Pune District; On-site; INR 900,000 - 1,500,000; Full time

Job summary

Harbinger Systems in Pune, India, is seeking a database professional to design, develop and maintain robust database solutions. You will manage databases including PostgreSQL, SQL Server, and MongoDB, and optimize performance.

The role involves backup, recovery, security, DR planning, SQL query optimization, deployments, migrations, and collaboration with development and infra teams. Proficiency in .NET, ADO.NET, and database tooling is required.

Qualifications

• Strong experience designing and implementing robust databases with an emphasis on reliability and performance.
• Expertise in query tuning, indexing strategies, and workload analysis across multiple RDBMS/NoSQL platforms.
• Proficiency with PostgreSQL, including PL/pgSQL, triggers, views, and functions; familiarity with .NET data access (ADO.NET).

Responsibilities

• Design, develop, and maintain robust database solutions.
• Manage and administer databases such as PostgreSQL, SQL Server, MySQL, Oracle, or MongoDB.
• Monitor database performance and implement tuning strategies to improve efficiency.
• Perform backup, recovery, replication, and disaster recovery planning.
• Ensure database security, compliance, and data integrity.
• Troubleshoot issues and provide root cause analysis.
• Develop and optimize complex SQL queries, stored procedures, functions, and triggers.
• Support application teams during deployments and migrations.
• Implement database monitoring and automation solutions.
• Collaborate with development, infra, and business teams to meet data requirements.
• Create and maintain technical documentation and operational procedures.

Skills

Database design & optimization

SQL query tuning

PostgreSQL PL/pgSQL

C# / .NET

Tools

pgAdmin

DBeaver

SQL Profiler

EXPLAIN ANALYZE

Git

SVN

TFS

Flyway

Liquibase

IIS

Windows Server

Npgsql

Copilot/Claude Code

Job description

Job Description:

• Design, develop, and maintain robust database solutions.
• Manage and administer databases such as SQL Server, Oracle, MySQL, PostgreSQL, or MongoDB.
• Monitor database performance and implement tuning strategies to improve efficiency.
• Perform database backup, recovery, replication, and disaster recovery planning.
• Ensure database security, compliance, and data integrity.
• Troubleshoot database issues and provide root cause analysis.
• Develop and optimize complex SQL queries, stored procedures, functions, and triggers.
• Support application teams during deployments and database migrations.
• Implement database monitoring and automation solutions.
• Collaborate with development, infrastructure, and business teams to meet data requirements.
• Create and maintain technical documentation and operational procedures.

Skills Required:

• Database: PostgreSQL (PL/pgSQL) stored procedures, functions, triggers, views, query optimization
• Backend: C# / .NET Framework (ASP.NET Web Forms) — for procedure integration with application layer
• Data Access: ADO.NET / Npgsql (PostgreSQL .NET driver)
• Tools: pgAdmin / DBeaver (query & schema management), SQL Profiler / EXPLAIN ANALYZE (performance tuning)
• Version Control: Git / SVN / TFS (for SQL script & procedure versioning)
• Deployment: IIS (Windows hosting), Windows Server
• Database migration/versioning tools (e.g., Flyway, Liquibase, or custom scripts)
• Monitoring: pg_stat_statements, log-based query analysis
• AI-assisted SQL tools (Copilot/Claude Code) for procedure debugging & optimization