Backend Developer
FinTech Solutions
Apr 2021 - Present
- Designed and built payment processing API handling $50M+ in annual transactions with 99.99% uptime, PCI DSS compliant
- Migrated monolithic application to 14 microservices using Go and gRPC, reducing deployment failures by 70% and enabling independent team releases
- Implemented event-driven architecture using RabbitMQ and Kafka, processing 1M+ events daily with at-least-once delivery guarantees
- Established observability stack with Prometheus, Grafana, and distributed tracing (Jaeger), reducing mean time to detection from 45 minutes to under 5 minutes
- Led on-call rotation for 3-person backend team, maintaining 99.95% SLA compliance across all production services