SDE I — White Martech Solutions (WMS)
Bangalore, India · Jun 2025 - Present
- Architected a multi-tenant, Go-based voucher issuance platform on an event-sourced transaction ledger with optimistic locking and idempotency to eliminate concurrent double-spending.
- Built a payment gateway orchestrator integrated with Razorpay — designed for provider extensibility — that now handles 90% of company transactions.
- Engineered ledger tracking, refunds management, and reliable webhook delivery with automated retry mechanisms.
- Built a pluggable background-worker framework over AWS SQS / GCP Pub-Sub to streamline bulk operations and order-lifecycle automation.
- Migrated API Gateway-facing Lambdas to an Application Load Balancer (ALB) architecture, achieving a 60% reduction in operational costs.