I build the systems behind useful products.

Lead the in-house development team as the primary full-stack engineer, owning planning, code review, releases, and production operations.

• —Own about 80% of a Django/DRF ERP used by 500+ people across 11 branches, covering HR, finance, diamond operations, QC, shipments, and reporting.
• —Built and run the FastAPI supplier portal for 2,000+ diamond suppliers worldwide, with bookings, returns, pricing, shipments, and real-time tracking.
• —Reduced ERP endpoint response times from tens of seconds to milliseconds — over 99% faster — by fixing severe ORM performance issues.
• —Maintain five production servers and the Docker, Kubernetes, Nginx, GitLab CI/CD, S3, Cloudinary, Celery, MongoDB, and Redis stack behind them.
• —Built a text-to-SQL MCP server using RAG over a 227-table schema and a SELECT-only guard, now used inside the ERP with a self-hosted Ollama model.
• —Built deterministic invoice validation with OCR for scanned PDFs, checking 12 key fields and every stone across roughly 1,000 invoices per month.

Tested backend API responses against business requirements across critical insurance workflows.

• —Identified and documented 15+ defects, then tracked fixes and validated them before production sign-off.

Applied secure backend practices across authentication, headers, input handling, and vulnerability assessment.

• —Implemented JWT, HSTS, CSP, and X-Frame-Options; wrote remediation documentation used by the engineering team.