Backend Software Engineer · Product Engineer
I build and scale PHP backends that stay fast under real load.
5 years engineering a multi-country healthcare SaaS (EMR) handling 30,000 appointments/day — performance optimization, payments, integrations, and testing strategy.
- 5 yrs
- building & scaling a PHP SaaS
- 30k
- daily appointments served
- 5
- countries in production
- 30s → 2s
- critical query optimization
Selected work
Projects
Mnemo
2026Spaced-repetition flashcards for my own studying — content lives in git-versioned Markdown, scheduling state (Anki SM-2) in Postgres. Live on its own subdomain, fully serverless on the free tier.
Supermarket Stock System
2025Inventory management backend for a supermarket chain, built in Laravel with a framework-agnostic, domain-driven core. The domain is fully tested without Laravel — pure PHP.
Commercial impact
Case studies
Testing & quality
QA transformation: Pest migration + AI-assisted E2E
Modernized a mature PHP codebase
Integrations
Payments & third-party integrations
MercadoPago QR payments, multi-country electronic invoicing, and RIS/LIS bridges — idempotency and signature verification treated as defaults.
Performance
Performance & reliability under load
Cut a critical database query from 30s to ~2s, hardened a corrupted-cache path, and ran 100+ production hotfixes with disciplined, reversible changes.
Looking for a backend engineer?
Open to remote roles — backend, platform, product engineering.