I build, ship & run software.
Ernesto Martinez, software engineer. 10 years in production, most of them on payroll at Thesis, Lithic and MetLife Legal Plans. The shop came later. Every client so far arrived by referral.
TRUSTED BY · CLIENTS & EMPLOYERS
On the record
From people who paid me to build it.Working with Ernesto has truly been one of our best decisions… It's truly a pleasure to have him as a service provider.
FOUR MORE FROM COLLEAGUES AND MANAGERS · ALL THE REFERENCES
Client work · the proofs ×3
PROOF SHEET 01 · REAL CLIENTS, REAL INVOICES 
03 The yard
BLF Transportation, Louisville KY. 5–10 hrs saved weekly · 0 missed invoices · 100% visibility.
DJANGO · STRIPE · NEXT.JS Live
ALSO RUNNING · DAILYMONEYBALL, MY OWN PRODUCT · THE FULL LEDGER
2015
ENGINEER SINCE
20+
PROJECTS BUILT
100%
CLIENTS WHO STAYED
6
STILL RUNNING TODAY
For engineers & CTOs
If you're evaluating me for contract or staff work: I have shipped production software since 2015, currently at MetLife Legal Plans, previously Lithic Technology and Thesis Agency. I write tests, and I operate what I ship. Most of what I know came from the operating.
Spec sheet
- backend
- PYTHON · DJANGO · DRF · FASTAPI · CELERY
- frontend
- REACT · TYPESCRIPT · NEXT.JS · ASTRO · TAILWIND
- data / infra
- POSTGRESQL · AWS · DOCKER · REDIS · TERRAFORM · GITHUB ACTIONS
- ai
- RAG · PGVECTOR
- payments
- STRIPE CONNECT · BILLING · WEBHOOKS
- open source
- CLERK-AUTH · NPM · PYPI
ES-2026-TPA
Start a conversation
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