Automate the routine
Remove repetitive work from both the software development process and the workflows the software supports.
Founder of Iron Rook
Trevin Hofmann
I build reliable software to simplify the complex.
I've spent more than a decade building dependable systems in finance, healthcare, and AI. I founded Iron Rook to put that experience to work for Wisconsin law firms and the communities they serve.
Why Iron Rook
My mission is to make legal justice more accessible.
My career has taken me from massive financial systems to voice AI and healthcare automation. Across those systems, the most valuable technology has always shared one quality: it empowers users without getting in the way.
I am returning that experience to my home state with Iron Rook. Wisconsin law firms already have the trust, talent, and knowledge their clients need. My role is to craft software solutions that reduce administrative friction so they can focus on the work they do best.
How I work
Build carefully. Learn quickly. Improve what matters.
Make quality visible
Use tests, useful metrics, and actionable insights to build confidence and detect pain points early.
Stay close to the work
Clarify goals with clients, deploy frequently, and improve from real feedback.
Experience
A career building reliable systems.
Software engineering, technical leadership, and applied AI across companies large and small.
Iron Rook
Founder
PresentWisconsin- Building practical, responsible AI automation that helps Wisconsin law firms increase their capacity to serve clients.
- Working directly with firms to understand their workflows and create tools that support their professional judgement.
Neon Health
Founding Software Engineer
June 2025 - July 2026Remote- Created an evaluation framework for measuring and improving voice AI performance.
- Implemented a web-based AI agent to automate prior authorization requests.
- Led development of a voice AI system for benefits verification.
Sunny Software
Software Engineer & Founder
January 2023 - June 2025Sunnyvale, California- Partnered with clients across web development, cryptocurrency wallets, pair programming, and code review.
- Launched MystiCode, an automated AI software development service.
Stripe
Software Engineer
September 2021 - November 2022Remote- Led enhancement and remediation projects for Onboarding & Compliance.
- Implemented a new Issuing capability in the Stripe API.
BGC Partners
Software Engineer
September 2019 - September 2021New York, New York- Developed a complex desktop application for trading large blocks of U.S. Treasury bonds.
- Migrated the project from Perforce to Git and automated its GitLab CI/CD pipelines.
American Express
Software Engineer
July 2017 - September 2019New York, New York- Led development of a reusable React component repository used by multiple teams.
- Led a four-engineer team building a new web shop for non-card products.
- Delivered the fastest initial render among the organization’s five web shops: 3.2 seconds, compared with 5.0, 5.4, 5.8, and 11.5 seconds.
- Implemented CI/CD with visual regression diffs for every pull request and interviewed dozens of software engineering candidates.
PayPal
Software Engineer Intern
June - August 2016San Jose, California- Implemented an organizational dashboard with D3.js visualizations of continuous integration test results.
PayPal
Software Engineer Intern
June - August 2015San Jose, California- Developed a web store for point-of-sale devices with a team using React and Flux.
Education
Software engineering, grounded in fundamentals.
Milwaukee School of EngineeringB.S. in Software Engineering, Minor in Mathematics2017
Focused expertise
- Applied AI and agent evaluation
- TypeScript, React, and Node.js
- Software engineering and technical leadership
- CI/CD, testing, observability, and developer tooling
- Financial technology and complex workflows
Get in touch