# Oskar Lang

Kufstein, Austria · [hi@rxs.to](mailto:hi@rxs.to) · [rxs.to](https://rxs.to) · [github.com/rxsto](https://github.com/rxsto) · [linkedin.com/in/oskar-lang](https://linkedin.com/in/oskar-lang)

## Profile

Software engineer and entrepreneur, self-employed since 2018. Co-founded Groovy (16M+ Discord servers, $1M+ revenue) and wrote its original bot at 16. Co-own Hydra (6.1M servers) and built the official SoundCloud and Netflix Discord bots with Jochen Segner.

## Experience

### Hydra, Co-owner and engineer · 2020 – present

Leveling, welcome and reaction-role bot founded by Jochen Segner, on 6.1M Discord servers.

- Built most of the hydra.bot web app, including premium subscriptions (Vue, Nuxt)
- Co-develop the Kotlin backend as its second-largest contributor
- Lead frontend, infrastructure and the monorepo for the 2026 rebuild (Rust, Kubernetes)

### SoundCloud, Engineer and project lead (contract) · 2021 – present

Official SoundCloud Discord bot, on 667K servers, built and run with Jochen Segner.

- Manage the project with SoundCloud, including the 2022 launch and the move to OAuth 2.1
- Lead the web frontend (TypeScript, Nuxt) and co-develop the Kotlin backend
- Set up and run production in the SoundCloud AWS organization with Terraform

### Digital Office 24, Software engineer (contract) · Feb 2026 – present

Built the production customer platform alone: HubSpot CRM integration, demo booking, customer area and billing (Bun, Hono, Next.js). Also did its GDPR and consent work.

### Finaure, Tech lead (contract) · Sep 2026 – present

Self-funded digital wealth-management startup by Dr. Jürgen Lange, built AI-first. In the core team, built its independent review program and an implementation-agnostic test lab.

### Top.gg, Software engineer (contract) · Jun 2026 – present

Built frontend features for reviews, ad campaign health, SEO and internationalization (Next.js), plus a signed macOS app for infrastructure status (Electron).

### “Hey, Netflix” Discord bot, Software engineer (contract) · 2022 – 2023

Built with Jochen Segner for Netflix, credited at HydraBot. 150K+ servers and 250K+ sessions in its first month; billed as the fastest-growing branded app on Discord. 2023 Webby Honoree.

### Groovy, Co-founder · 2018 – 2021

Discord music bot with Nik Ammerlaan; 16M+ servers before YouTube forced it offline.

- Wrote the original bot at 16 (Python, then Java)
- Led frontend and monetization as revenue passed $1M

## Education

### University of Passau, Computer Science (no degree) · 2020 – 2021

Left after the first semester to focus on my ventures.

### Gabelsberger-Gymnasium Mainburg, Abitur · 2020

## Volunteering

### BUNDjugend Bayern, Camp leadership team (Leitungsteam) · 2022 – present

Member since 2018; co-organize the Zeltlager, its largest yearly camp for children and teens.

## Skills

- **Programming:** TypeScript, Kotlin, Java, Python, Rust; Vue, Nuxt, React, Next.js; Spring Boot
- **Infrastructure:** AWS, Terraform, Kubernetes, Docker, Google Cloud, Cloudflare, Postgres, Redis
- **Business:** client and project management, monetization (Stripe, Chargebee), GDPR
- **AI:** multi-agent development workflows across machines, LLM integration
- **Languages:** German (native), English (fluent)