Open to opportunities

Daniel Estevez

@danielestevez

Message

I build governed AI systems and scalable full-stack products with 15+ years of production engineering experience.

Zimbabwe

Message

What I'm looking for

I'm looking to build production AI systems and scalable products where architecture, human review, deterministic engineering practices, and real code ownership matter.

I'm building Atta Labs, an applied-AI ecosystem where multiple applications share a Bun, TypeScript, and Turborepo agent infrastructure. I own the architecture end to end, including multi-LLM routing, LangGraph orchestration, YAML-defined agent flows, MCP hosting, BYOK encryption, and evaluation frameworks.

At Game7, I architected a multi-tenant Web3 gaming platform and designed multi-agent content generation workflows that balanced model capability, speed, cost, and output quality. I also created an OpenAPI-to-component-props pipeline, AI-assisted development practices with human review gates, and real-time multiplayer features.

Previously, I led frontend architecture at Elixir Games and built its cross-platform Web3 game launcher for Windows, Linux, and macOS. My work also spans React and GraphQL platforms at Conferize, SaaS interfaces at Sherpany, full-stack client delivery, travel technology at Amadeus, and KNX embedded firmware at Zennio.

I direct agents rather than defer to them, and I don't ship code I don't fully understand. I care about deterministic checks, explicit contracts, provenance, and keeping codebases honest while AI writes more of the implementation.

Experience

Work history, roles, and key accomplishments

Current

AI Systems Engineer

Current

Atta Labs

Jan 2026 - Present (7 months)

Built and ran a complete AI ecosystem end to end, including a multi-LLM engine with routing and LangGraph orchestration, and hosted MCP servers with BYOK encryption.

Bun TypeScript TurboRepo LangGraph MCP Claude Gemini GPT Grok YAML

Senior Frontend Architect

Game7 (Summon)

Nov 2023 - Mar 2026 (2 years 4 months)

Designed multi-agent AI content generation with parallel orchestration and model routing, and built an evaluation framework for non-deterministic outputs. Architected a multi-tenant SaaS platform with swappable UI libraries and delivered AI-assisted admin tools.

React Next.js TypeScript TurboRepo Sanity CMS OpenAPI MCP AI Agents Colyseus

Lead Frontend Engineer

Elixir Games

Feb 2021 - Nov 2023 (2 years 9 months)

Led frontend architecture and technical direction across products, built a cross-platform Web3 game launcher with Electron and Next.js, and developed web launcher and developer dashboard.

Electron Next.js React TypeScript Web3 Ethereum Polygon Arbitrum

Frontend Engineer

Sherpany

Aug 2020 - Feb 2021 (6 months)

Built frontend features using TypeScript, React, and Redux, delivering polished and accessible UI components with Ant Design.

TypeScript React Redux Ant Design

Frontend Developer

Conferize

Feb 2016 - Feb 2020 (4 years)

Primary frontend engineer over four years, working with React, GraphQL, and real-time features, and maintaining a comprehensive test suite.

React GraphQL Apollo Client Jest Enzyme

Full Stack Developer

Freelance

May 2013 - Jan 2016 (2 years 8 months)

Built full-stack web applications for international clients, handling end-to-end delivery including UX, REST APIs, testing, and deployment.

MongoDB Express AngularJS

Software Engineer

Amadeus IT Group

Sep 2010 - Mar 2013 (2 years 6 months)

Worked in R&D on the core booking engine, delivering features across UI, business logic, and GDS integration layers via Amadeus Web Services.

GDS UI

Software Engineer

Zennio

Oct 2008 - Jan 2010 (1 year 3 months)

Designed and developed home automation products to the EIB/KNX standard, including embedded firmware in C and C++ and configuration tooling in J2EE and LabView.

C C++J2EE LabVIEW KNX