Marc Seitz
Founder at NFX
Munich, Bavaria, Germany
Summary
🤩
Rockstar🎓
Top SchoolMarc Seitz is a founder and hands-on software engineer with 11 years of experience blending physics-trained analytical rigor with product and engineering leadership. Based in Munich, he founded Papermark, an open-source DocSend alternative that he’s taken to thousands of teams and actively develops—implementing front-end performance improvements, robust image-conversion retry logic, and richer AI-enabled data rooms. He has a track record co-founding and scaling startups (Hackerbay) and building innovation programs (co-founder of Intel Ignite), plus VC and accelerator experience as CTO at AlphaQ and an NFX fellow. Marc pairs deep technical interests—training deep reinforcement learning agents and completing Udacity nanodegrees—with business strategy training from Harvard Business School, making him equally comfortable shipping product features and shaping long-term company direction. An active open-source contributor, he favors practical, user-facing improvements that improve reliability and UX rather than grand architectural rewrites.
11 years of coding experience
8 years of employment as a software developer
Nanodegree Deep Reinforcement Learning, Nanodegree Deep Reinforcement Learning at UdacityBachelor of Science (B.Sc.) Physics, Bachelor of Science (B.Sc.) Physics at Ludwig-Maximilians-Universität MünchenThe University of Hong Kong (HKU)Ontario Secondary School Diploma, Ontario Secondary School Diploma at Ridley CollegeDisruptive Strategy, Disruptive Strategy at Harvard Business SchoolNymphenburger Gymnasium
Github Skills (13)
typescript10
nextjs10
typescripts10
user-interface10
api10
tailwindcss10
next-auth10
apidoc10
react10
typescript-types10
prisma10
zod8
postgresql8
Programming languages (16)
Github contributions (5)
mfts/papermark
May 2023 - Apr 2025
Papermark is the open-source DocSend alternative with built-in analytics and custom domains.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:14 releases, 249 reviews, 1179 PRs in 1 year 10 months
Contributions summary:Marc implemented new features and performed refactoring in the `papermark` repository, an open-source document sharing platform. Their contributions focused on adding retry mechanisms for image conversion APIs and creating a more robust data room experience with enhanced user features. They also made changes to UI components to improve link interactions and the overall user experience, while also updating the front end to improve performance.
dataroomnext-authnextjspdfpostgresql
mfts/pantry
Nov 2022 - Oct 2023
oss jumble sale
Contributions:73 pushes, 56 branches, 4 issues in 10 months
saleoss
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