Sameer Kumar

Principal Database Specialist at Amazon Web Services

About

Sameer Kumar is a Principal Database Specialist TAM at AWS, helping enterprise customers optimize database operations across RDS, Aurora, and DocumentDB. With 15+ years of experience, he specializes in scaling database infrastructure and achieving high availability up to five 9s. Throughout his career, Sameer has guided enterprises managing database fleets ranging from hundreds to tens of thousands of instances. Previously as a Database Solution Architect, he has architected solutions for Retail, BFSI, and Telecom sectors, working with both relational and noSQL databases.

Sameer Kumar has presented the following presentations

    Sameer Kumar Roneel Kumar Postgres at Scale: Lessons from Running Multi-Terabyte Clusters at PG Down Under 2026

    presented by Sameer Kumar and Roneel Kumar

    PostgreSQL has matured into one of the most trusted databases for mission-critical workloads, but scaling it to tens or even hundreds of terabytes is a different game altogether. At this scale, the challenges shift from simple tuning to deep architectural decisions: vacuum pressure, index bloat, replication lag, and the limits of storage and I/O subsystems all start to matter.

    In this talk...

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    Essentials
    Sameer Kumar Roneel Kumar Overcoming Challenges in SQL Server to PostgreSQL Migrations: Mapping Backups, Collations, and Case Sensitivity at PG Down Under 2025

    presented by Roneel Kumar and Sameer Kumar

    SQL Server to PostgreSQL migrations present a complex array of technical differences that can challenge even experienced DBAs - we've seen this firsthand across hundreds of hours spent with customers managing databases from tens of GiBs to several terabytes. Successfully navigating these migrations requires deep understanding of how critical components like backups, collations, and case sensiti...

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    Fri 17 2025 Ops and Administration