Christian Heilmann

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 […]

Two tools to create QR codes for free and without any ad breaks

June 19th, 2025

I often have to create QR codes and whilst the built-in generator in browsers is good enough, I sometimes want to customise the look with a logo in the centre. There are quite a few QR generators out there, but they come with lots of advertising, interstitials and other annoyances. So here are two generators […]

TIL: Smart glasses aren’t just for pricks, they are an accessibility aid

June 18th, 2025

I wasn’t a fan of smart glasses. Mostly because of the way they were advertised as a tool for influencers, people who constantly want to stream or those who need to always have the newest and coolest in terms of gadgets. I also see them as a privacy and security worry – there were quite […]

Newsletter

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

160: Graphs and RAGs explained and VS Code extension hacks Graphs and RAG explained, how AI is reshaping UI and work, how to efficiently use Cursor, VS Code extensions security issues.
159: AI pipelines, 10x faster TypeScript, How to interview How to use LLMs to help you write code and how much electricity does that use? Is your API secure? 10x faster TypeScript thanks to Go!
158: 🕹️ Super Mario AI 🔑 API keys in LLMs 🤙🏾 Vibe Coding Why is AI playing Super Mario? How is hallucinating the least of our worries and what are rules for developing Safety Critical Code?
157: CUDA in Python, Gemini Code Assist and back-dooring LLMs We met with a CUDA expert from NVIDIA about the future of hardware, we look at how AI fails and how to play pong on 140 browser tabs.
156: Enterprise dead, all about Bluesky and React moves on! Learn about Bluesky as a platform, how to build a React App and how to speed up SQL. And play an impossible game in the browser.

My other work: