Dan M.

If your backend is slow, leaking data, or held together with duct tape - I fix that. I build production-grade NestJS APIs and full-stack SaaS applications for startups that need things done right the first time. My work runs on AWS and Railway, backed by PostgreSQL (Supabase/Prisma), with Bull/Redis for async jobs, and clean TypeScript throughout. ━━ WHAT I BUILD ━━ → REST & GraphQL APIs - NestJS, auth (JWT/OAuth), rate limiting, pagination, async queues → Full-stack SaaS - React + TypeScript frontends with clean state management and API contracts → Automation & Integrations - Make, HubSpot, webhook pipelines, third-party API wiring → Cloud & DevOps - AWS (ECS/EKS, Lambda, RDS), Railway, Docker, GitHub Actions CI/CD → Database design - PostgreSQL schemas, Prisma ORM, migrations, query optimization ━━ SELECTED RESULTS ━━ ▸ Visto (Immigration LegalTech SaaS) - Built Chrome extension + NestJS backend automating data autofill across USCIS, DOL FLAG, and DOS CEAC portals. Stack: Plasmo + React + Supabase + Bull/Redis. ▸ PropXOS (Property Management Platform) — End-to-end digital infrastructure: HubSpot pipelines, Make automation, GA4 tracking, email deliverability (SPF/DKIM/DMARC), Google Ads for NJ + Palm Beach County markets. ▸ Kenya Pesticide Registration System - NestJS on AWS for a national regulator. Cut manual review time, hardened auth & audit trails, improved SLAs. ▸ SADC Regional Trade Portal — Django + React, on-prem deployment. Stable releases, clear API boundaries, measurable uptime gains. ▸ AI Report Aggregator - OneDrive + OpenAI auto-summaries. Hours saved weekly, privacy-aware processing, consistent reporting. ━━ HOW I WORK ━━ Architecture first → thin slices → demoable value fast. IaC + pipelines from day 1 → reproducible environments. Clear scopes, milestone-based billing, no surprises. Full handover: READMEs, runbooks, diagrams - you own the code. AWS Solutions Architect (Certified) · LFS250: Kubernetes & Cloud Native UTC+3 (EAT) · Available for async and scheduled calls Let's talk if you need a backend that scales, not one that breaks at 3 am.