Henry Dennis
Software engineer
Worthing, UK

Hey, I’m Henry. I build software: products, tools for developers, and the occasional thing with a Raspberry Pi inside.

Right now, I’m building AI development tools at Tillo and working on Handover. I’ve been making things for the web since 2014. More about me →

Showreel

30 seconds, with sound
Transcript

Twelve years ago, I chose a job over university. I’ve been learning on the job ever since.

A check-in system for 1,000 students, at Hurstpierpoint College. From web developer to iOS lead, at Sonin. Tutor availability for 11,000 tutors, at Tutorful. 20% faster APIs, 500,000 requests a day, at Tillo. An AI reviewer on every pull request, at Tillo. My own programming language, as a side project.

Opinionated. Persuadable.

“He encourages you to think holistically.” Cecil Campbell, Product Designer.

Projects

All work →

Now

September 2026

AI review tools, Handover polish, and a rather large test conversion.

Here’s the September update →

Elsewhere