Harry Baines

Full stack engineer, focused on applied AI.

Harry Baines

I'm Harry, a 29-year-old full stack software engineer based in the UK. I've been building for the web since 2018, and these days my focus is applied AI: integrating LLMs into real systems, and building the APIs, interfaces and orchestration that make them reliable enough for people to use every day.

I like small, fast software that does one thing well, and I care more about shipping something people actually use than about what it's built with. Outside of work I freelance, build side projects, and keep a long list of things I want to learn next.

Currently

Focus
AI and LLM integrations
Based
United Kingdom
Open to
Freelance work

Experience

  • Software Engineer, ConnexAI

    2025 – Now

    Building and maintaining the LLM integrations behind Athena, ConnexAI's AI customer journey platform. Built Clara end to end, an AI analytics assistant that answers questions in natural language and generates charts and tables on demand.

  • Software Engineer, Cassidy and Ashton Architects

    2022 – 2025

    Designed and built archtms, a PERN practice management system covering timesheets, resourcing, cash flow forecasting and client portals for 80+ staff. Added dashboards across 13,000+ projects and cut hosting costs by 90% by moving from Heroku to Docker on Fly.

  • Software Engineer / Data Scientist, Yordas Digital

    2020 – 2022

    Built a Django app that cut safety data sheet authoring time by over 50%, and automated regulatory data checks with Selenium, Celery and ML forecasting models. Led code reviews, mentored junior developers and supervised two intern projects.

  • Data Scientist Intern, Yordas Digital

    2020

    Built NLP search over 20,000+ chemical phrases for a live safety data sheet authoring app, and tuned queries and indexes to make search 60% faster.

  • Software Engineer, part time, Cassidy and Ashton Architects

    2018 – 2020

    Built the first version of archtms alongside university: a React, Node.js and PostgreSQL timesheet system with its own REST API, shipped in six months.

Education

  • MSc Data Science (Distinction), Lancaster University

    2019 – 2020
  • BSc Computer Science (First Class), Lancaster University

    2016 – 2019

Outside of work

Most weeks revolve around training. I'm a hybrid athlete, so that means a mix of running and lifting, and I enjoy having something to work towards that has nothing to do with a screen.

I'm a lifelong Liverpool FC fan, through the good seasons and the other ones, and I play a fair bit of chess, slowly getting better.

The rest of the time I'm building things in my office: tweaking the desk setup, living in Neovim and the terminal, or chasing whatever side project has caught my attention that month. I'm planning to start sharing it on Instagram soon.

Elsewhere