# RATLOG

[RATLOG on Hacklab](https://hacklab.so/org/ratlog)

Startup · 4 people on Hacklab

## Links

- [Website](https://www.ratlog.space/)
- [Y Combinator](https://www.ycombinator.com/companies/ratlog)
- [LinkedIn](https://www.linkedin.com/company/103988498/)

## About

<!-- hacklab:yc-profile -->

## YC company profile

Reusable heavy-lift rockets

- **YC batch:** Fall 2026
- **Founded:** 2026
- **Team size:** 4
- **Location:** Dresden, Germany
- **Country:** DE
- **Status:** Active
- **Industry:** Industrials
- **Stage:** Early
- **Tags:** Commercial Space Launch
- **YC partner:** Kulveer Taggar

## Founders

### Charlie Weise — Founder/CEO

Founder/CEO at RATLOG (YC F26). YETI G1 Fellow. Previously Research Intern at Aerospace Institute (Technical University Dresden) working on ESA's Argonaut Moon Lander. Co-founded Innuendo, developing an air-breathing cruise missile powered by RDE. Research Assistant at Fraunhofer IWS on ESA space telescope project.

[LinkedIn](https://www.linkedin.com/in/charlieweise/) · [X](https://x.com/_charlieweise)

### Matty Driesnack — Founder/COO

Founder/COO at RATLOG (YC F26). Founding team at Lio (YC S23, a16z), working closely with CEO and COO. MS Business Administration from TU Dresden.

[LinkedIn](https://www.linkedin.com/in/matty-driesnack/) · [X](https://x.com/MattyDriesnack)

### Felix Kelm — Founder/Engineering

Founder/Engineering at RATLOG. Previously Electronics Lead at Innuendo, building an air-breathing cruise missile powered by a rotating detonation engine. Developed PCB since age 16. Electrical Engineering at TU Dresden and Telecommunication at INSA Lyon.

[LinkedIn](https://www.linkedin.com/in/felix-kelm-666a00407/)

### Paul Kunhart — Founder/CTO

Founder/CTO at RATLOG (YC F26). Designed rocket engine nozzles for ESA's Argonaut lunar lander at Technical University Dresden's Aerospace Institute. Previously co-founded Innuendo, leading engine design on an air-breathing cruise missile powered by a rotating detonation engine. Studying Aerospace Engineering at TU Dresden.

[LinkedIn](https://www.linkedin.com/in/paul-kunhart-577266392/)

[Source: Y Combinator](https://www.ycombinator.com/companies/ratlog) · Retrieved 2026-11-02. Company information is self-reported on YC.

## Current staff

- [Charlie Weise](https://hacklab.so/charlie-weise) — Founder/CEO (Present)
- [Felix Kelm](https://hacklab.so/felix-kelm) — Founder/Engineering (Present)
- [Matty Driesnack](https://hacklab.so/matty-driesnack) — Founder/COO (Present)
- [Paul Kunhart](https://hacklab.so/paul-kunhart) — Founder/CTO (Present)