
Welcome to my blog. I write about coding, data projects, and sometimes about my personal life.
My professional story
I am interested in building exciting technology with great teams.
I have spent some years building products that use deep learning to understand human motion in video: Anything from video-powered workout apps to gesture recognition for the automotive industry.
People often forget that building these AI products requires a ton of “boring old software” on the side: Web apps for data management, build pipelines for deliverables, deployment of web services. This has now led me back to a broader space of simply building good software – with or without AI inside.
Working in both product and service companies over the years has taught me to put the user at the center of every product decision – a good reminder when working with technology.

Say hello.
Do you have something to talk about? Send me a joke on LinkedIn or drop me a line at florian@casualcoding.com.
Vita
When | Position | Location |
---|---|---|
Since 2024 | Engineering Lead at they Consulting | Hamburg |
2021–2024 | AI Lead at LifeBonus | Hamburg |
2017–2021 | AI Engineer (and later Team Lead) at Twenty Billion Neurons | Berlin |
2017 | M.Sc. in Computer Science from University of Hamburg | Hamburg |
2016 | Co-founded Album Up, a web service for photographers | Hamburg |
2013–2017 | Web developer (part-time) at YOOtheme | Hamburg |
2012–2013 | Web developer at Showcase Software Ltd | Wellington, NZ |
2012 | B.Sc. in Computer Science from University of Hamburg | Hamburg |
Publications
I have authored and been co-author on a few publications about Machine Learning and Computer Vision (most recent listed first)What to Say and When to Say it: Live Fitness Coaching as a Testbed for Situated Interaction (2024)
Citation: Panchal, S., Bhattacharyya, A., Berger, G., Mercier, A., Bohm, C., Dietrichkeit, F., … & Memisevic, R. (2024). Live Fitness Coaching as a Testbed for Situated Interaction.
Is end-to-end learning enough for fitness activity recognition? (2023)
Citation: Antoine Mercier, Guillaume Berger, Sunny Panchal, Florian Dietrichkeit, Cornelius Böhm, Ingo Bax, and Roland Memisevic. Is end-to-end learning enough for fitness activity recognition? CoRR, abs/2305.08191, 2023.
Localizing salient body motion in multi-person scenes using convolutional neural networks (2019)
Note: Still published under my birth name “Florian Letsch”Citation: Letsch, F., Jirak, D., & Wermter, S. (2019). Localizing salient body motion in multi-person scenes using convolutional neural networks. Neurocomputing, 330, 449-464.
Selected projects


Gesture recognition and localization using Deep Learning
Publication, Deep Learning
Letsch, F., Jirak, D., & Wermter, S. (2019). Localizing salient body motion in multi-person scenes using convolutional neural networks. Neurocomputing, 330, 449-464. Note, still published under my birth name “Letsch”

AI For Good Hackathon Participation
Hackathon, Data Science
In April 2020, I participated in the AI for Good Hackathon, taking place remotely. Our team of four analyzed satellite and location data, practiced our Data Science skills, and created visualizations.

Album Up
Side project, web development
3 friends and I co-founded Album Up, a premium service for photographers to deliver photos to their clients. The service was online from 2016 to 2021.

Podcast Profile
Side project, web development
Online service to showcase which podcasts you are listening to. The project was online till 2021.