Jannis Kreis
Consulting, Workshops And Software Engineering at Kreis Technology Consulting
Berlin, Germany
Summary
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Rockstar🎓
Top SchoolJannis Kreis is a Berlin-based AI practitioner and consultant with 12 years of software engineering experience, blending hands-on product development with workshops and client engagements in generative AI, AI automation, and cloud solutions. He co-founded multiple startups applying diffusion models and personalized image generation to consumer experiences, and currently runs Kreis Technology Consulting to help organizations implement GPU hosting, RAGs, LLM fine-tuning, and agent workflows. Technically fluent across full-stack web technologies and event-driven systems, he’s contributed frontend improvements to the notable Parity Ethereum client and automated cross-platform build and CI scripts for ffmpeg-static. Jannis pairs practical engineering with business insight from a Harvard Business School Online certificate in Business Analytics, and he often surfaces engineering-led product pivots from rapid experimentation. Colleagues value him for bridging research-grade ML techniques and reliable production deployments, and for making urban infrastructure and everyday experiences more accessible through open-source work.
12 years of coding experience
6 years of employment as a software developer
Certificate, Business Analytics, Certificate, Business Analytics at Harvard Business School OnlineAbitur, Maschinenbau, 1,9, Abitur, Maschinenbau, 1,9 at Ludwig-Geissler-Schule
Stackoverflow
31reputation
7kreached
3answers
0questions
Github Skills (31)
javascript10
scripting10
css10
bash10
build-system10
ui-design10
ffmpeg10
cicd10
uid10
automation10
script10
front-end-development10
sh10
automations10
shell10
Programming languages (33)
Github contributions (5)
eugeneware/ffmpeg-static
Aug 2017 - Dec 2022
ffmpeg static binaries for Mac OSX and Linux and Windows
Role in this project:
Automation Engineer / Build & Release Engineer
Automation Engineer / Build & Release EngineerContributions:2 releases, 15 reviews, 111 commits in 5 years 4 months
Contributions summary:Jannis primarily focused on building and maintaining the build scripts for the `ffmpeg-static` repository. They automated the process of downloading and extracting FFmpeg binaries for various operating systems and architectures. This involved significant changes to the `build/index.sh` script, including adapting to different download sources, handling compressed files, and incorporating platform-specific build steps. Additionally, the user fixed CI/CD pipeline issues and improved the install script.
mac-osxosxwindowsffmpeg-staticlinux
openethereum/parity-ethereum
Oct 2016 - Feb 2017
The fast, light, and robust client for Ethereum-like networks.
Role in this project:Front-end Developer
Front-end DeveloperContributions:182 commits, 105 PRs, 187 pushes in 4 months
Contributions summary:Jannis primarily worked on the front-end aspects of the Parity Ethereum client, contributing to UI components and application views. They focused on modifying and enhancing existing UI elements written in JavaScript, including the modification of an address select and an account. The commits included changes to component styling and refactoring of existing components and implemented a new account.
ethereumblockchainlightnoderust
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