Simon Seifert

Developer & Startup CTO

At 18, I raised €15k for a hardware startup. At 19, I co-founded an agency where I help startups, creators, and businesses turn ideas into scalable products that actually work, while still going to college.

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Total Revenue (€)
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Startups Co-Founded
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Projects Users
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Years Old

About Me

Building the future, one product at a time.

I started building things at 18 when I co-founded Arden, a smart vase IoT startup that raised €15k. That experience taught me that great ideas need solid execution — and that's where I come in.

At 19, while still in college, I co-founded Karl Media, a digital agency that hit €15k in revenue within 6 months. We help businesses and creators build their digital presence with modern, functional web apps.

Along the way, I’ve helped other startups raise over €30k through pitch consulting, advising teams on their strategy, designing decks and creating media.

Today, I work as a technical growth advisor on SideQuests, a gamified app for Gen Z students that blends nightlife and social challenges. I lead product, growth, and technical strategy.

Whether it’s launching an MVP or pitching for funding, I combine technical depth with business clarity to help founders build what matters.

How I Can Help

🚀

Growth & Scaling

Help scale your product from MVP to production

What you get:
  • Performance optimization
  • Infrastructure scaling
  • DevOps setup
  • Security audits
🧠

Technical Consulting

Strategic tech guidance and CTO services for startups

What you get:
  • Technical strategy
  • Architecture planning
  • Team building
  • Technology choices
💻

Development & MVP

Turn your ideas into scalable products with rapid prototyping

What you get:
  • MVP development
  • Web & mobile apps
  • API design
  • Database architecture
🤝

Team & Collaboration

Partner with me or hire my team for your project

What you get:
  • Full-stack development
  • Technical leadership
  • Code review
  • Mentoring

Key Projects

Let's Connect

Interested in working together or discussing a project? Feel free to reach out.