Nimmo

Software engineer and technical lead. Over two decades building things, fixing things, and making teams better along the way. I like hard problems, messy codebases, and people who actually care about what they're doing.

About

I started at British Airways, where I went from junior developer to Technical Design Lead on a platform doing £20m+ a week. Most recently I've been delivering safety-critical systems for the NHS.

I'm at my best when things are complicated. Legacy system that nobody wants to touch? Deployment pipeline that takes an hour? Team that's lost its confidence? Those are the problems I like solving. I've cut CI/CD runtimes by 95%, untangled decade-old data corruption, and built teams that actually enjoy shipping code.

I write Elm and Haskell for fun, I believe strongly in functional programming, and I think the best technical leaders are the ones who make everyone around them better, not just louder.

Side projects

The day job keeps me busy, but some ideas won't leave you alone until you make them.

Experience

NHS Digital

Lead Software Engineer

Virtual Hospitals, Cervical Screening, Breast Screening. Safety-critical systems across all three. Cut automated test runtime by 92%, cut CI/CD pipelines by 95%, diagnosed historical data corruption across cross-border transfers, and built Python ETL pipelines bridging modern AWS architecture with legacy NHS systems. SC Cleared.

MindGym

Lead Software Engineer

Led the platform rebuild for a global behavioural science company during rapid scaling. Migrated to Node.js, GraphQL, and React, delivered two major new products while keeping legacy systems running, and mentored a distributed engineering team.

Click Travel (now TravelPerk)

Senior Engineer & Tech Lead

Modernised a legacy Java codebase into a cloud-based application. Led a team that delivered a progressive web app for offline travel itineraries in a single week. Introduced automated testing and functional programming patterns.

DWP

Lead Software Engineer

Led development of a system replacing manual Winter Fuels payment processes, handling millions of transactions. Introduced Docker and TDD practices to the team.

Nomad Digital

Senior Applications Developer

Led the move away from legacy Python/Java systems to Node.js, Docker, and Kubernetes. Built the Node.js backend for the new platform, with a focus on keeping things modular and easy to reason about.

British Airways

Junior → Technical Design Lead

Seven years, from junior to leading the technical design across five development teams and 70+ developers. Delivered the responsive mobile booking system for BA.com, a platform handling £20m+ in weekly sales. Convinced stakeholders to adopt mobile-first, before it was fashionable.

Get in touch

Whether it's work, a weird side project idea, or you just want to talk about text adventures.

When I'm not writing code, I photograph little plastic turtles. Seriously.