hemant Kumar
@hemantkumar13
I build high-throughput .NET APIs and optimize SQL Server platforms.
IndiaWhat I'm looking for
I've built and operated high-throughput .NET services for Tata Consultancy Services, Nagarro, Aristocrat, Fiserv, and Capgemini. My work spans ASP.NET Core Web APIs, SQL Server, Snowflake, RabbitMQ, Hangfire, and production support for financial, energy, gaming, and insurance platforms.
I've reduced API latency by 45% with Protobuf, improved multi-million-row query performance by 35% through partitioning and indexing, and automated data-lifecycle work that saved 40+ hours each month. I also mentor developers, lead code reviews, and use GitHub Copilot and Claude Code for refactoring, test generation, and rapid prototyping.
Experience
Work history, roles, and key accomplishments
Restructured complex SQL Server and Snowflake queries, cutting analytical report generation time by 15%. Led migration of a legacy WinForms application to a modern React and .NET Core web architecture.
Designed SQL table partitioning and indexing strategies that improved query performance on multi-million-row datasets by 35%. Built automated SQL data-lifecycle jobs with Hangfire, saving 40+ hours of manual database maintenance per month.
Replaced JSON with Protobuf serialization in a Web API, reducing latency by 45% for high-frequency live transactions. Implemented date-based table partitioning on core financial transaction tables, eliminating lag during peak operations.
Refactored legacy VB applications into modular WPF/WCF components using the MVVM pattern, improving maintainability by 25%. Diagnosed and fixed critical design flaws through log analysis, working with global support teams to keep production stable.
Education
Degrees, certifications, and relevant coursework
RCC Institute of Information Technology
B.Tech, Information Technology
2009 - 2013
Grade: 72.8%
Completed B.Tech in Information Technology with 72.8% marks.
Microsoft
Microsoft Certified: Azure Fundamentals (AZ-900), Cloud Fundamentals
Earned the Microsoft Certified: Azure Fundamentals (AZ-900) certification.
Tech stack
Software and tools used professionally
Availability
Location
IndiaAuthorized to work in
Salary expectations
Social media
Skills
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