Hi, I'm Beer - based in Berlin

What I've worked on

A bit of this and a bit of that

Professional Experience

Fresqo

Fresqo

Co-Founder
August 2025 - November 2025

Tried solving the problem of finding a community. I defined a community as a low-liquidity group of people that regularly meets around a shared goal/interest/purpose.

People are seeking more offline social interactions. Loads of products solve for discovery, but not for enabling connection growth.

⚰️ We managed to hit revenue, but failed at validating a viable way to generate recurring revenue at scale from this problem.

Visit Website
TypeScriptConvexReactTailwind CSSTanstack Start
Amplify

Amplify

Lead Developer
September 2023 - May 2025

Joined at 0 code and only a company vision. Am in charge of building the Festival Companion App, which we launched with over 4 organizers and 10+ events. Had 200k unique users in the 2024 season with a peak of 70k users at the same time online. 0 downtime.

Built in an extremely lean team (1.2 FTE); delivering value fast.

Visit Website
React NativePostgreSQLNode.jsTypescriptPrismaAWS LambdaAWS CloudFormationFirebase FunctionsFirebase Firestore
Arby (HFT Arbitrage Bot)

Arby (HFT Arbitrage Bot)

Founder
September 2022 - April 2023

A hobby project turned into a little 30% yearly ROI printer on low capital.

⚰️ German bureaucracy, taxes and the nature of higher slippage with higher capital ended the story.

TypeScriptNode.jsElasticsearchEVM JSON‑RPC
Legal OS (now Flank)

Legal OS (now Flank)

Lead Developer
November 2017 - August 2019
  • Set up all tech on which Legal OS raised €2 million seed round.
  • Set up recruiting process and executed ahead of the seed round.
  • Product had zero downtime during my time at Legal OS.
  • Set up single-click deployment and migration infrastructure.
Visit Website
TypeScriptNode.jsReactMongoDBCircleCIGraphQL
Pieter Pot

Pieter Pot

Full Stack Product Engineer
April 2022 - October 2022
  • Onboarded 3rd party owned development processes into internal development team.
  • Main focus was the mobile app, but I worked on all the technical components of the company (backend, website, deposit management system).
Visit Website
ReactReact NativeNode.jsTypescriptAWS Lambda
StockAlarm

StockAlarm

One man army
February 2021 - November 2021
  • Wore many hats; Fullstack development to customer support.
  • Identified key strategic goals to work towards such as expanding outside of the US.
  • Implemented the technology necessary to achieve goals focus on scalability.
  • Worked on high-load low-latency infrastructure
Visit Website
ReactReact NativeNode.jsTypescriptFirebase FunctionsFirebase Realtime DBGoogle Cloud PlatformRedis
Code.nl

Code.nl

Fullstack Developer
December 2020 - May 2021
  • Helped to create endpoints using serverless tech for smooth user experiences on web-shops hosted through the Shopify platform.
Visit Website
ReactNode.jsFirebase FunctionsFirebase FirestoreGoogle Cloud Platform
Crunchr Planning

Crunchr Planning

Product Manager
December 2019 - December 2020
  • Done dozens of user interviews as part of launching a new product.
  • Performed 1:1's with 2 developers to have a healthy team.
  • Developed as well because of small team (3).
Visit Website
PostgreSQLPythonDjangoAngular
Crunchr Preference

Crunchr Preference

Product Manager
December 2019 - December 2020
  • Moved unmanaged team to outcome-driven development.
  • Performed 1:1's with 2 different developers than above.
  • Developed as well here, again because of small team (3).
Visit Website
PostgreSQLPythonDjangoAngular

Side Projects & Experiments

Producter

Producter

Founder

It's hard to have a single-source-of truth for Product Teams that doesn't grow to a mess. I set out to fix that.

⚰️ I didn't care deeply enough about the product to put in the energy required.

ReactFirestoreTypeScript
Who is Playing?

Who is Playing?

Founder

Why not listen to who is playing instead of read up on it? Makes picking a party for the evening much easier.

⚰️ Shutdown because SoundCloud closed it's streaming API.

ReactTypeScript
MixMerger

MixMerger

Founder

Using the fact that songs appear in multiple mixes, you can create infinite mixes by merging where they play the same songs.

⚰️ Shutdown because I over-engineered the Fourier Transformations to detect overlapping songs. If I would pick this up again I would first mechanical-turk the tool.

Node.jsTypeScriptJavaFourier Transformations
Transcendance

Transcendance

Founder

VR allows you to truly be immersed with music. I created a prototype, released on the Oculus forums, which got picked up by one of the main VR youtubers back in 2013.

🦸 Since I was a student never intended to take it further, but the positive reactions made me consider this a success!

Visit Website
Unity3DC#

Technologies I Worked With

TypeScript
Convex
React
Tailwind CSS
Tanstack Start
React Native
PostgreSQL
Node.js
Typescript
Prisma
AWS Lambda
AWS CloudFormation
Firebase Functions
Firebase Firestore
Elasticsearch
EVM JSON‑RPC
MongoDB
CircleCI
GraphQL
Firebase Realtime DB
Google Cloud Platform
Redis
Python
Django
Angular
Firestore
Java
Fourier Transformations
Unity3D
C#