Back-End Developer CV Example

- Scaled core APIs and event processing for enterprise integrations - Redesigned a payment orchestration service using Kafka and outbox patterns, improving exactly-once processing reliability during peak traffic. - Optimized PostgreSQL query plans with partial indexes and partitioning, reducing p95 report generation latency from 14s to 2.8s. - Added OpenTelemetry tracing across Go services, enabling root-cause diagnosis for cross-service timeout chains in under 10 minutes.

- Developed resilient API and data services for logistics clients - Implemented OAuth2 token exchange and fine-grained scopes for partner APIs, passing SOC 2 security review without remediation findings. - Built asynchronous document generation workers in Python with Celery and Redis, increasing throughput 4x over synchronous endpoints. - Introduced schema migration gates in CI with rollback checks, preventing destructive DDL from reaching production databases.

- Supported API feature delivery and backend quality initiatives - Implemented audit logging middleware with tenant-aware correlation IDs across Express services. - Created integration tests for external ERP adapters using WireMock, reducing release regressions in sync workflows. - Documented internal APIs with AsyncAPI and OpenAPI examples that accelerated onboarding for new engineers.