Database Administrator Postgresql & Sql Server Chennai (India)

Job Description Job Title: Database Administrator (PostgreSQL & SQL Server), 4 - 9 years exp Location: Onsite, Chennai 5 days a week Role Summary We are looking for a Database Administrator with solid expertise in PostgreSQL and SQL Server to handle administration, performance tuning, automation, and migrations in cloud environments (AWS, Azure, GCP). Responsibilities Administer PostgreSQL and SQL Server databases, including installation, configuration, patching, upgrades, backups, and restores (pgdump, pgrestore). Perform performance tuning in both PostgreSQL and SQL Server, including query optimization, indexing, and memory parameter tuning. Analyze and interpret explain plans in PostgreSQL and SQL Server; optimize complex queries and joins. Design and maintain database schemas, including star schema models. Work with AWS RDS, Azure PostgreSQL (including Flexible Server), GCP Cloud SQL for PostgreSQL, and related DB cloud services. Configure and manage access and connectivity using security groups and VPC/network concepts in cloud settings. Use PostgreSQL features such as VACUUM, memory tuning, and understand PostgreSQL architecture and cloud-specific capabilities on RDS, Azure, and GCP. Manage SQL Server features such as SQL Agent jobs, mirroring, Always On; support schema design, performance tuning, and query optimization in SQL Server. Plan and execute data migrations and heterogeneous migrations to PostgreSQL, using basic knowledge of MySQL, Oracle, Teradata, and DB2 where needed. Automate daily DBA tasks and operational routines using scripting (Python preferred, other scripting languages welcome). Use LLMs appropriately to assist with analysis, scripting, and documentation while maintaining quality and security. Requirements Robust hands-on experience as a DBA with PostgreSQL and SQL Server. Deep knowledge of SQL, performance tuning in PostgreSQL and SQL Server, query optimization, indexing, query planning, joins, and memory parameter tuning. Experience with AWS, Azure, and GCP database services (RDS, Flexible Servers, Cloud SQL for PostgreSQL). Experience with data migrations and heterogeneous migrations to PostgreSQL. Scripting skills for automation (Python preferred). Understanding of security groups and VPC concepts in cloud environments. Basic exposure to MySQL, Oracle, Teradata, and DB2 for migration purposes. .