# Charles Harries (@charlesharri.es) Profile: https://sifa.id/p/charlesharri.es Headline: I use computers to solve problems — robustly. Location: Durham, England, United Kingdom ## About I build performant, legible, highly-available systems to solve healthcare problems in the United Kingdom. I'm just trying to leave things around here a little better than I found em. ## Experience - **Senior Systems Engineer at NHS England** (2026 – present) I build the primary interface between the NHS and thousands of GP practices across England, Wales, and the Isle of Man. Part of this work includes safeguarding and deploying new features to the Personal Demographics Service. I also lead a live support team and participate in the on-call rota responding to incidents across the NHS Spine platform. ## Education - **McGill University** — Bachelor of Arts, English Literature (2008 – 2012) ## Skills - Python - Python - Splunk - AWS ## Publications - Doggerland — charlesharri.es (https://charlesharri.es/books/doggerland) - Doggerland — charlesharri.es (https://charlesharri.es/books/doggerland) - Doggerland — charlesharri.es (https://charlesharri.es/books/doggerland) - Summer — charlesharri.es (https://charlesharri.es/stream/summer) - Summer — charlesharri.es (https://charlesharri.es/stream/summer) - Summer — charlesharri.es (https://charlesharri.es/stream/summer) - screen recording — charlesharri.es (https://charlesharri.es/stream/screen-recording) - screen recording — charlesharri.es (https://charlesharri.es/stream/screen-recording) - screen recording — charlesharri.es (https://charlesharri.es/stream/screen-recording) - screen recording — charlesharri.es (https://charlesharri.es/stream/screen-recording) - 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screen recording — charlesharri.es (https://charlesharri.es/stream/screen-recording) - screen recording — charlesharri.es (https://charlesharri.es/stream/screen-recording) - screen recording — charlesharri.es (https://charlesharri.es/stream/screen-recording) - screen recording — charlesharri.es (https://charlesharri.es/stream/screen-recording) - screen recording — charlesharri.es (https://charlesharri.es/stream/screen-recording) - screen recording — charlesharri.es (https://charlesharri.es/stream/screen-recording) - screen recording — charlesharri.es (https://charlesharri.es/stream/screen-recording) - screen recording — charlesharri.es (https://charlesharri.es/stream/screen-recording) - screen recording — charlesharri.es (https://charlesharri.es/stream/screen-recording) - screen recording — charlesharri.es (https://charlesharri.es/stream/screen-recording) - screen recording — charlesharri.es (https://charlesharri.es/stream/screen-recording) - screen recording — charlesharri.es (https://charlesharri.es/stream/screen-recording) - screen recording — charlesharri.es (https://charlesharri.es/stream/screen-recording) - screen recording — charlesharri.es (https://charlesharri.es/stream/screen-recording) - screen recording — charlesharri.es (https://charlesharri.es/stream/screen-recording) - screen recording — charlesharri.es (https://charlesharri.es/stream/screen-recording) - screen recording — charlesharri.es (https://charlesharri.es/stream/screen-recording) - screen recording — charlesharri.es (https://charlesharri.es/stream/screen-recording) - screen recording — charlesharri.es (https://charlesharri.es/stream/screen-recording) - screen recording — charlesharri.es (https://charlesharri.es/stream/screen-recording) - Walking Ghyll, 5 June — charlesharri.es (https://charlesharri.es/stream/walking-ghyll-5-june) - Walking Ghyll, 3 June — charlesharri.es (https://charlesharri.es/stream/walking-ghyll-3-june) - Walking Ghyll, 31 May — charlesharri.es (https://charlesharri.es/stream/walking-ghyll-31-may) - Walking Ghyll, 28 May — charlesharri.es (https://charlesharri.es/stream/walking-ghyll-28-may) - Walking Ghyll, 24 May — charlesharri.es (https://charlesharri.es/stream/walking-ghyll-24-may) - The 62nd Fellsman — charlesharri.es (https://charlesharri.es/blog/the-62nd-fellsman) - A Storm of Swords — charlesharri.es (https://charlesharri.es/books/a-storm-of-swords) - Ghosts — charlesharri.es (https://charlesharri.es/stream/ghosts) - Slouching Towards Utopia — charlesharri.es (https://charlesharri.es/books/slouching-towards-utopia) - Yesteryear — charlesharri.es (https://charlesharri.es/books/yesteryear) - Claude Code for fell running — charlesharri.es (https://charlesharri.es/stream/claude-code-for-fell-running) - On completing half of the Wainwrights — charlesharri.es (https://charlesharri.es/stream/on-completing-half-of-the-wainwrights) - Thoughts on slowing the fuck down - Mario Zechner — charlesharri.es (https://charlesharri.es/stream/thoughts-on-slowing-the-fuck-down-mario-zechner) - The code agent orchestra - Addi Osmani — charlesharri.es (https://charlesharri.es/stream/the-code-agent-orchestra-addi-osmani) - Wuthering Heights — charlesharri.es (https://charlesharri.es/books/wuthering-heights) - Krystal - FFSR — charlesharri.es (https://charlesharri.es/stream/krystal-ffsr) - North Lakes Wainwright bagging — charlesharri.es (https://charlesharri.es/stream/north-lakes-wainwright-bagging) - Cognitive debt — charlesharri.es (https://charlesharri.es/stream/cognitive-debt) - Now: Rubbish — charlesharri.es (https://charlesharri.es/stream/now-rubbish) - How to read and write application logs — charlesharri.es (https://charlesharri.es/stream/how-to-read-and-write-logs) - Now — charlesharri.es (https://charlesharri.es/stream/now-2026-02-03) - AI lowers the effort barrier — charlesharri.es (https://charlesharri.es/stream/ai-lowers-the-effort-barrier) - Karpathy on Claude Code — charlesharri.es (https://charlesharri.es/stream/karpathy-on-claude-code) - Now — charlesharri.es (https://charlesharri.es/stream/now-2026-01-27) - Now — charlesharri.es (https://charlesharri.es/stream/now-20260118) - Default apps, 2026 — charlesharri.es (https://charlesharri.es/stream/default-apps-2026) - Now — charlesharri.es (https://charlesharri.es/stream/now-20250111) - Now — charlesharri.es (https://charlesharri.es/stream/now-2) - TV & film at the end of the year — charlesharri.es (https://charlesharri.es/stream/tv-film-at-the-end-of-the-year) - 2025 — charlesharri.es (https://charlesharri.es/blog/2025) - The Rose Field — charlesharri.es (https://charlesharri.es/books/the-rose-field) - Simonside Cairns fell race — charlesharri.es (https://charlesharri.es/stream/simonside-cairns-fell-race) - Not Boring !Camera — charlesharri.es (https://charlesharri.es/stream/not-boring-camera) - App switching — charlesharri.es (https://charlesharri.es/stream/app-switching) - Somewhere to go to do one thing — charlesharri.es (https://charlesharri.es/stream/somewhere-to-go-to-do-one-thing) - La Belle Sauvage — charlesharri.es (https://charlesharri.es/books/la-belle-sauvage) - Cruel Little Man — charlesharri.es (https://charlesharri.es/stream/cruel-little-man) - Bad AI art — charlesharri.es (https://charlesharri.es/stream/bad-ai-art) - Uniqlo — charlesharri.es (https://charlesharri.es/stream/uniqlo) - Jasmine Sun: are you high-agency — charlesharri.es (https://charlesharri.es/stream/high-agency) - Dan Abramov: Open Social — charlesharri.es (https://charlesharri.es/stream/dan-abramov-open-social) - John Ganz: Reflections on Violence — charlesharri.es (https://charlesharri.es/stream/john-ganz-reflections-on-violence) - A couple of things to remember when Something Bad is in the news — charlesharri.es (https://charlesharri.es/stream/a-couple-of-things-to-remember-when-something-bad-is-in-the-news) - Yield points — charlesharri.es (https://charlesharri.es/stream/yield-points) - A youtube video about doing something meaningful — charlesharri.es (https://charlesharri.es/stream/a-youtube-video-about-doing-something-meaningful) - More Programming Thoughtleadership re: dependencies — charlesharri.es (https://charlesharri.es/stream/programming-thoughtleadership) - Good system design — charlesharri.es (https://charlesharri.es/stream/good-system-design) - A Game of Thrones — charlesharri.es (https://charlesharri.es/books/a-game-of-thrones) - Picking on third-party deps — charlesharri.es (https://charlesharri.es/stream/i-implore-you-to-reconsider) - Collaborative mapping — charlesharri.es (https://charlesharri.es/stream/collaborative-mapping) - The Director — charlesharri.es (https://charlesharri.es/books/the-director) - Ghost CMS — charlesharri.es (https://charlesharri.es/stream/ghost-cms) - I need jungle I'm afraid — charlesharri.es (https://charlesharri.es/stream/i-need-jungle-im-afraid) - Careless People — charlesharri.es (https://charlesharri.es/books/careless-people) - Skittles — charlesharri.es (https://charlesharri.es/stream/skittles) - Poem/1 — charlesharri.es (https://charlesharri.es/stream/poem-1) - Maurice and Maralyn — charlesharri.es (https://charlesharri.es/books/maurice-and-maralyn)