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Hi, I'm Jeff, an AI-native engineer shipping products to production.

Brands I worked with

Jeff Liu

About

Fourteen years turning creative ideas into production systems.

I started out hand-coding interactive ad experiences for Fortune 500 brands and spent more than a decade across ad tech and fintech. Today I build AI-native content pipelines and the tooling creative teams actually use.

More about me

01 / 06 — Selected Work

Marvel: Guardians of the Galaxy

Gyroscope-driven parallax ad with multi-layer depth, DeviceMotion API, and cross-platform fallback

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01 / 06

Experience

AI Platform Engineer & Founder

Building an AI-native media company and the tooling behind it: multi-agent content pipelines, an MCP connector platform, and a publishing stack engineered for AI search.

2024 - Present

Sr. UI/UX Developer & Project Manager

Built front-end components and handled creative compliance for the marketing team, then led the revamp of the firm's internal sales CRM.

2023 - 2024

Sr. Front End Developer

Built responsive React interfaces for blockchain and digital-asset platforms with integrated internal APIs, and managed the HubSpot CMS for marketing landing pages.

2023

Sr. Front End Developer

Built dynamic creative frameworks tied to campaign KPIs that lifted conversion 30%, and shipped an A/B testing framework that cut prototyping time 50%.

2020 - 2023

Sr. Creative Developer / Client Solutions

Built interactive brand campaigns for Fortune 500 advertisers including HBO, Audi, Marvel, Delta, and Porsche, shipping high-impact creative across premium publishers.

2014 - 2020

Creative Development Manager

Media Operations Manager

Junior Engineer

Rebuilt the company's responsive template system and trained a global creative production team, driving a 65% increase in mobile conversions.

2013 - 2014

2012 - 2013

2012

Builders Log

July 22, 2026

Building a Commit Guard for AI Agents That an Adversary Can't Slip Past

I gave a coding agent a guard that checks every commit lands in the repo and branch I intend. My 417 tests were all green. Then I hired a second agent to break it, and it walked through two holes the green suite never thought to check.

July 22, 2026

Graph Engineering Makes Agent Failure Legible, Not Agents Reliable

A video making the rounds argues graph engineering supersedes the loop-based agent pattern. After building multi-agent systems, I think the loop-versus-graph framing asks the wrong question. Topology decides whether you can SEE a failure, not whether one happens. Reliability lives in the deterministic checks at the edges, not in how you wire the agents.

June 21, 2026

Claude Desktop vs Cowork vs Code: A Beginner's Roadmap to Which One to Use

Claude Desktop, Cowork, and Code look interchangeable. The real difference is what survives when the session ends, and that decides which one to build in.

Let's build something.

Advisory and hands-on builds for teams putting AI into production.