Alexander Andersen
Founder of EchoNote. Full-stack developer. AI builder. I write about podcasts, technology, and what happens when you build things from scratch in Denmark.
What I do
I'm building EchoNote - an AI tool that transcribes and summarizes podcasts. The idea came from frustration: I was listening to 5-10 podcasts a week and taking manual notes that never got used. Turns out a lot of people have the same problem.
Before EchoNote, I worked as a full-stack developer focused on TypeScript, Next.js, and PostgreSQL. I've built everything from internal dashboards to consumer products - always with an eye on fast execution and pragmatic code.
Why I write
I write to think. Most of what I publish started as a note to myself - an observation, a frustration, an idea that wouldn't let go. Articulating it properly forces me to understand it better.
If others get something out of it along the way, that's a bonus. I don't write to please an algorithm. I write what I would have needed to read a year ago.
Tech stack
I primarily work with TypeScript, Next.js, PostgreSQL, and Supabase. For the AI side, I use OpenAI, DeepSeek, and open-source models via OpenRouter. This blog runs on Next.js with MDX and is deployed via Vercel.
Contact
Find me on X/Twitter and GitHub. For questions about EchoNote, email info@byhartvig.dk.