Sai M.

About Sai M.

Full Stack Developer with 6+ years of experience building scalable web applications and…

Experience

1. Senior Software Engineer

   Charles Schwab

   Aug 2024 — Present

   Led GitHub Copilot adoption team-wide — defining usage guidelines and prompt engineering standards that accelerated feature delivery by 30% and cut story cycle time from 5 to 3.5 days• Architected MCP server integrations connecting LLMs to internal tooling and observability pipelines, reducing post-incident root cause analysis from 3+ hours to under 30 minutes• Modernized 5 mission-critical.NET services processing 2M+ daily transactions, migrating to.NET Core with containerization — cutting deployment time by 60%(2hrs → 45min) and unlocking $80K in annual infrastructure savings• Architected a fault-tolerant Kafka/RabbitMQ messaging backbone processing 500K+ messages/day at 99.99% delivery guarantee, reducing message loss 100x (5% → 0.05%) through idempotent consumers and dead-letter queues• Engineered an Aerospike caching layer for latency-sensitive trading workloads, compressing query latency from 450ms to 35ms (92%) while sustaining 15K+ requests/second at peak volume• Built end-to-end observability across 8 microservices using OpenTelemetry and Prometheus/Grafana — driving MTTD from 40 to 4 minutes, MTTR from 90 to 18 minutes, and uptime from 99.2% to 99.87%• Re-engineered data pipelines with parallel processing, delivering 3.5x throughput (20K → 70K records/hour) while cutting memory consumption by 45%• Drove TDD adoption with xUnit frameworks, achieving 85%+ coverage on all new services and cutting regression bugs by 55%• Delivered reusable Terraform modules and observability libraries adopted across 4 engineering teams, unifying practices across 12+ services