# Jader Correa — Engineering profile

## Positioning

Jader Correa is a principal engineer and founder with more than 20 years of
experience shipping production systems. His work sits at the intersection of
product judgment, architecture, and hands-on implementation. He is interested
in Principal Engineer and senior staff-level roles where he can set technical
direction while continuing to build and operate consequential systems.

## Engineering philosophy

Models generate possibilities.

Repositories define constraints.

Verification establishes truth.

Jader uses language models to investigate, plan, implement, and review, while
keeping authorization, product judgment, system invariants, and executable
verification deterministic.

## Areas of expertise

- Reliable AI agents, evaluations, and multi-model workflows
- Developer tools and repository-native engineering knowledge
- Distributed and event-driven systems
- Production architecture and operational reliability
- PostgreSQL and zero-downtime schema evolution
- Elixir/OTP, Go, TypeScript, and Ruby

## Selected evidence

### GPTCode

GPTCode is Jader's open-source investigation into reliable coding agents. It
separates repository research, planning, implementation, review, and
verification into inspectable stages. Model reasoning proposes changes;
repository constraints and deterministic tools establish whether they are
correct.

- Project: https://gptcode.dev
- Source: https://github.com/jadercorrea/gptcode

### Code Climate

Jader evolved the architecture of Velocity and shipped capabilities that
contributed approximately USD 1 million in annual recurring revenue.

### TransportAPI / First Bus

He designed and built Elixir/OTP systems supporting real-time transportation
applications used by more than 3 million passengers across more than 40 UK
cities.

### Industrial telemetry

He developed distributed systems processing more than 50 million events per day
across 14 manufacturing plants.

### Árvore

He helped grow the engineering organization threefold while improving execution
across products serving more than 2 million monthly users.

### Zapfy

As founder, Jader builds an AI-native commerce platform spanning agents,
payments, fiscal operations, inventory, mobile applications, and physical
point-of-sale hardware.

## Canonical identity

- Name: Jader Correa
- Role: Principal Engineer and founder
- Website: https://jader-correa.com/
- GitHub: https://github.com/jadercorrea
- LinkedIn: https://www.linkedin.com/in/jadercorrea/
- Email: jc@jader-correa.com