Moisés Costa

Senior Python & AI Engineer

Rio de Janeiro, Brazil · UTC−3
moises.costa12345@gmail.com
linkedin.com/in/moises-costa-rj · github.com/Finish-Him

Profile

I build Python backends and AI systems that turn complex workflows into clear, reliable products. My focus is on clear data contracts, validation, maintainability and observability.

Technical focus

Backend engineering

Python · FastAPI · PostgreSQL · Docker

Applied AI

RAG · MCP · LLM agents · Evaluation

Structured data

Pydantic · Document extraction · Semantic search

Experience

Senior Python Engineer · AI & Backend Architecture

DETRAN-RJ · Directorate of IT | 2019 — present

Joined the IT directorate in 2019 in systems analysis and technical documentation. Full-time Python engineering since 2022, building backend systems, workflow automation and applied AI.

Project Coordinator & Operations Analyst

DETRAN-RJ · Internal Affairs & Ombudsman | Apr 2014 — Mar 2019

Served as an IT reference for administrative workflows, requirements and technical documentation. Connected technical teams with legal, operational and citizen-service stakeholders.

Education

Marketing

Estácio | 2014 — 2018

Selected work

Atlas

Semantic search for institutional asset information. Built to help teams navigate complex records.

Python · PostgreSQL · Semantic search

Logos

Structured extraction that turns complex documents into validated, usable data.

Python · Pydantic · Structured outputs

AI Gateway

A common entry point for model calls, with attention to validation, observability and cost.

APIs · LLM systems · Observability

Artemis

An AI tutor for the second phase of Brazil’s OAB bar exam, focused on legal reasoning and written answers.

AI tutoring · Legal reasoning · Structured learning

Arquimedes

A RAG-based mathematics tutor and study assistant for structured learning workflows.

RAG · AI tutoring · Mathematics