Skip to content
Currently enjoying Lungo.
Currently enjoying Lungo.






  • Pro


@markenzoo @lovoo @jsExam @ordered-online @peerbridge @output-dd @MietOn
Block or Report

Block or report felix-kaestner

Block user

Prevent this user from interacting with your repositories and sending you notifications. Learn more about blocking users.

You must be logged in to block users.

Report abuse

Contact GitHub support about this user’s behavior. Learn more about reporting abuse.

Report abuse

Hi. 👋

I am a software developer and solutions architect specialized in cloud computing and data science. I live in Dresden where I studied Computer Science at Technische Universität Dresden, receiving the academic title Master of Science.

I'm currently working as a Backend Engineer at LOVOO where I am part of a cross-functional team developing new product features of the LOVOO App. As part of my work I implement microservices in Go with gRPC and maintain our infrastructure on the Google Cloud.

Additionally, I'm currently accepting freelance work. You can contact me via mail.

I previously worked as a developer for the RiDE (former Movebis) research project doing WebGL-powered data visualizations of large geographic datasets for traffic analysis. Besides, I developed mobile applications (mostly Android) together with my good friend Philipp Matthes. We prototyped PeerBridge an anonymous messenger based on Blockchain and DPoS. Additionally, we were rebuilding the OUTPUT.DD Apps. During my studies I was employed at MARKENZOO, where I worked as a web developer, creating and maintaining a variety of different projects mainly focused around Contao CMS.

I strive to learn new things and develop skills in a range of different areas.🌱 If you have an interesting project or want to ask me anything 💬, you can reach out and send me a mail. 📫 You can also find me on Twitter and LinkedIn.

Fun fact: I am the winner of the 1st Thuringian Computer Science Competition.


  1. A proof-of-stake based blockchain cryptosystem, as a foundation for the experimental PeerBridge messenger

    Go 5 1

  2. A proof-of-work Android app for fully anonymous text communication backed by the PeerBridge PoS blockchain system.

    Kotlin 2

  3. lungo Public

    A tiny, zero-dependency web framework based on net/http with an intuitive API.

    Go 2 1

  4. slices Public

    The missing map/filter/reduce (+more) for (requires Go v1.18+)

    Go 5

  5. Custom GPG pinentry program for macOS that allows using Touch ID for retrieving the key passphrase from the macOS keychain

    Swift 4

  6. Google protocol buffer compiler plugin to generate Mocks for gRPC Services in Go.

    Go 3

2,154 contributions in the last year

Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Mon Wed Fri

Contribution activity

Seeing something unexpected? Take a look at the GitHub profile guide.