Mangesh User
@mangeshuser
Senior Database & Backend Developer specializing in Oracle-to-PostgreSQL migration.
IndiaWhat I'm looking for
I’m a Senior Database & Backend Developer with 14+ years of experience in Oracle (PL/SQL) and PostgreSQL (PL/pgSQL), specializing in database migration, performance tuning, backend system development, and Unix/Python automation. I focus on enterprise-grade backend modernization and reliable production delivery across BFSI, Payments, and Life Sciences.
I’ve led Oracle to PostgreSQL migration initiatives, ensuring seamless code porting without functional impact. I take technical ownership of database and backend components, develop and maintain PL/SQL/PL/pgSQL objects (packages, procedures, functions, triggers, views, collections), and drive performance stability through query optimization, execution plan analysis, indexing, and partitioning.
I deliver end-to-end SDLC under Agile/Scrum—sprint planning, backlog refinement, release planning (Dev → QA → UAT → Prod), root cause analysis, and post-deployment validation. I collaborate with global stakeholders in onsite/offshore models, enforce secure coding practices and audit compliance, and continuously improve delivery through Git-based version control, code reviews, and capacity planning.
Experience
Work history, roles, and key accomplishments
Delivered end-to-end Agile/Scrum releases for Oracle PL/SQL and PostgreSQL PL/pgSQL database and backend components, owning performance stability and production support. Led Oracle-to-PostgreSQL migration initiatives and performed post-deployment validation, root-cause analysis, and performance troubleshooting for enterprise clients.
Developed and maintained Oracle PL/SQL database objects and supported production deployments with issue resolution and performance troubleshooting. Contributed to DWH/ETL and reporting development, built Unix/Python automation scripts for data extraction and batch processing, and participated in Agile/Scrum delivery cycles.
Education
Degrees, certifications, and relevant coursework
Mangesh hasn't added their education
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Tech stack
Software and tools used professionally
Availability
Location
IndiaAuthorized to work in
Skills
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