Simon Seifert

Developer & Startup CTO

At 18, I raised €10k 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.

0k+
Total Revenue (€)
0
Startups Co-Founded
0k+
App Users
0
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 €10k. 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 websites and apps.

Currently, I'm building SideQuests, a gamified challenge app for Gen Z and students that's already gained 1k+ users. I also work as a fractional CTO for startups, helping non-technical founders turn their ideas into scalable products.

I believe in building fast, iterating quickly, and focusing on what actually matters. Whether it's a startup MVP, a growth strategy, or scaling an existing product, I bring both technical depth and business understanding to every project.

How I Can Help

🧠

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
🚀

Growth & Scaling

Help scale your product from MVP to production

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

Key Projects

Let's Connect

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