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Flaga Unii Europejskiej
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Kraj: United States of America

Lokalizacja: Albuquerque

Na Useme od dzisiaj

O mnie

I build backend systems and I verify them, at production standard.

Six systems shipped solo in 2026, each with automated tests, CI and written architecture decisions. The one I show engineers: a ledger that is append only, enforced by a Postgres trigger and not application code, every entry signed and hash chained, covered by 52 unit tests and 13 end to end tests for forgery, replay, crash resume and chain integrity.

The other half is verification: 260+ paid evaluations of AI generated code at the highest difficulty tier for frontier AI labs, in repos I had never opened, across Python, TypeScript, Java, C++ and Go. I reproduced each environment in Docker, wrote my own test patches instead of trusting the reference solution, and separated a real defect from a harness artefact.

Stack: Python, TypeScript, Node.js, React, Next.js, FastAPI, NestJS, PostgreSQL, Docker, Linux, Bash, Git, REST APIs.

Rabat, UTC+1. Invoicing through Prestilink LLC, a US entity. Live code in the portfolio below.

Kategorie

Serwisy internetowe > Strony internetowe
Programowanie i IT > Aplikacje webowe
Programowanie i IT > Projekty IT

Umiejętności

AI API Backend Bash Claude Claude code Codex Docker Git Javascript Linux LLM Mikrouslugi Next.js NodeJS Postgresql Python React REST Sql Sztuczna inteligecja Testy automatyczne Typescript

CV / Résumé

Mar 2026 - Wrz 2026

AI Code Evaluation Engineer

Mercor

260+ paid evaluations of AI generated code at the highest difficulty tier for frontier AI labs, in production repos across Python, TypeScript, Java, C++ and Go. Reproduced each environment in Docker and wrote my own test patches.

Paź 2023 - Teraz

Independent Software Engineer

Prestilink LLC

Backend systems shipped solo: REST APIs, Postgres schemas with constraints and triggers, Docker, CI pipelines. Six systems in 2026, each with automated tests and written architecture decisions. Public code at github.com/SpowZy

Portfolio

Even, signed append-only receipts ledger

Every model and tool call gets a signed, hash chained receipt. Append only is enforced by a Postgres trigger and not by application code, so nothing can rewrite its own history. 52 unit and 13 end to end tests cover forgery and replay.

TaskRank, learning to rank engine

LambdaMART learning to rank model with an A/B harness using bootstrap confidence intervals. NDCG@5 at 0.94 in simulation, reported as simulation because that is what it is. Python, multi objective scoring, off policy evaluation.

Swellbook, booking system

Double booking is impossible by design: a Postgres range exclusion constraint rather than application logic, proven by 25 concurrent attempts where exactly one wins. Next.js and TypeScript on Vercel, 11 integration tests green in CI.