Selected Industry Impact

These entries summarize outcomes from proprietary systems. They focus on scope, approach, and measurable results while excluding sensitive implementation details.

Zero-Downtime Migration Across 60 OpenSearch Clusters

Amazon, 2025

Led a staged migration of 1PB+ search data while maintaining availability and improving latency.

Scope: 56B seller listings, 8.7M partners, multi-region traffic; sustained approximately 5K read TPS and approximately 200K write TPS during a 2-day migration window.

Outcomes

  • Completed migration with zero client downtime.
  • Reduced p90 API latency by 15% through Graviton-based OpenSearch capacity optimization.

Approach

  • Phased cutover with guardrails and rollback criteria.
  • Capacity planning tied to read/write traffic envelopes.
  • Real-time validation and operational runbooks.

Visibility: proprietary system

Proof: LinkedIn profile , Public OpenSearch contribution index

Traffic Prioritization Reduced Seller-Visible Ingestion Delay by 80%

Amazon, 2025

Designed a schema-driven prioritization layer so seller-facing updates remained fast during heavy backfills.

Scope: Ingestion pipelines supporting seller contribution updates and backfill workloads.

Outcomes

  • Reduced p99 seller-facing delay from 90 minutes to 18 minutes.
  • Improved listing visibility timeliness during periods of high system load.

Approach

  • Schema-based sidelining and prioritization controls.
  • Explicit SLO-oriented queue and throughput policies.
  • Operational metrics and alerting tied to customer-visible latency.

Visibility: proprietary system

Proof: LinkedIn profile

Amazon Haul: Seller Management and Buyability Visibility

Amazon, 2024

Delivered platform capabilities that let sellers manage Haul listings and see accurate buyability status from offer creation.

Scope: Seller onboarding and listing lifecycle flows for a new marketplace program.

Outcomes

  • Enabled launch-critical seller workflows for Haul.
  • Introduced an extensible data model for future marketplace programs.

Approach

  • Modeled program-aware data contracts and lifecycle states.
  • Built extensibility points to avoid one-off launch logic.
  • Integrated with seller-facing management surfaces.

Visibility: proprietary system

Proof: Amazon Haul announcement context , LinkedIn profile

Cluster Stability Remediation Eliminated Repeated SEV2s

Amazon, 2025

Diagnosed infrastructure bottlenecks and implemented scaling/rate controls that stopped recurring customer-impacting incidents.

Scope: OpenSearch clusters backing high-throughput marketplace indexing workloads.

Outcomes

  • Eliminated 12+ SEV2 incidents across a 6+ week window.
  • Stabilized service behavior under sustained ingestion pressure.

Approach

  • Root-cause analysis that isolated EBS throughput throttling.
  • Node scaling and write-rate limiting strategy.
  • Joint execution with AWS TAM and OpenSearch stakeholders.

Visibility: proprietary system

Proof: LinkedIn profile , Public OpenSearch contribution index