Christian Heilmann

A lesson from history for Software Engineers, Product Owners and CEOs

August 22nd, 2025

This is the U-1206. It was the peak of submarine technology at the end of the Second World War. Right now it lies at 70 metres depth slightly North West of England. You might say this is an impressive feat for a submarine to be submerged that long. Alas, it is isn’t by design but […]

Using GitHub Pages as a URL shortener / redirection service

August 11th, 2025

With the fate of Goo.gl in the balance and many URL shortening/redirection services being either expensive or spammy, I wondered if I could find a free/cheap way of achieving the same. So I got myself a short domain (CLXI.org) and looked at using a GitHub repo with pages to redirect URLs. Turns out, this is […]

Things not to do as a presenter if you want a great talk recording

August 5th, 2025

Currently I am editing >600 presentations of the WeAreDevelopers World Congress to release the videos at the end of the month. This is frustrating and painstaking work, as both presenters and moderators didn’t quite follow some simple ideas that make a talk a good recording. Conference organisers spend a lot of time and money on […]

Presentations should always work offline – especially in online conferences

July 14th, 2025

We just finished the WeAreDevelopers World Congress 2025 in Berlin, and I am still recovering from the event. It was a fantastic experience, and I am grateful to everyone who attended and made it a success. As the main moderator of the main stage, I had the pleasure of introducing many amazing speakers and topics. […]

Day Zero Activities of WeAreDevelopers World Congress tomorrow

July 8th, 2025

Hi there, I am currently slightly freaking out as this week is the WeAreDevelopers World Congress in Berlin and I am moderating the main stage with 23 talks in two days and still have to write the closing keynote. Officially the event starts on Thursday, but if you are already in Berlin tomorrow, I put […]

Newsletter

Check out the Dev Digest Newsletter I write every week for WeAreDevelopers.

Word is Doomed, Flawed LLM benchmarks, hard sorting and CSS mistakes Spot LLM benchmark flaws, learn why sorting is hard, how to run Doom in Word and how to say "no" like a manager.
30 years of JS, Browser AI, how attackers use GenAI, whistling code Learn how to use AI in your browser and not on the cloud, why AI makes different mistakes than humans and go and whistle up some code!
197: Dunning-Kruger steroids, state of cloud security, puppies>beer
196: AI killed devops, what now? LLM Political bias & AI security Learn how AI killed DevOps, create long tasks in JS, why 1 in 5 security breaches are AI generated code & play "The Scope Creep"
195: End of likes, JS Zoo and Tim Berners-Lee doesn't see AI vs Web Meta kills like buttons, Tim-Berners-Lee thinks AI won't kill the web, GitHub is ending toasts and the worst selling Microsoft product.

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