I build digital products for health and education businesses.

I'm Konstantin. Product background at N26 and Urban Sports, now building for SMEs. Therapy marketplaces. Course platforms. Booking systems. Built end-to-end. You focus on your clients. I'll build the product.

About

I build digital products and infrastructure for businesses that need technical execution without engineering teams.

Former product leader at N26 and Urban Sports Club, where I drove growth and operational efficiency through data-driven product development. In one initiative, I reduced payment-related fraud by 92%, saving over €2.2M annually within 4 months.

Now I build custom solutions for health and education companies—from concept to shipped product in weeks, not months.

Recent work: Complete therapy marketplace platform, online course infrastructure for health practitioners, digital practice management systems.

My background spans early-stage startups to major European tech brands. I combine hands-on technical execution with strategic product thinking—and I ship fast.

Recent Work

Kaufmann Health – Therapy Marketplace Platform

Built complete SaaS platform connecting therapy clients with body-oriented therapists in Germany, including booking system, payments, SMS verification, and automated matching.

Stack: Next.js, Supabase, Twilio, Resend. 0 to working platform with paying clients in 3 months.

Health Practitioner Digitization

Online course platform and digital infrastructure for an independent health practitioner, combining technical implementation with project management for clients who need both execution and guidance.

Availability

2–3 project slots open through Q1 2026.

Focus on rapid prototyping, marketplace platforms, and digital infrastructure for small businesses.

Book a discovery call

Work

Head of Academy

Apr 2023 - Nov 2024

Spearheaded curriculum development for a 12-month Product Management program.
Recruited, trained, and led a team of 14 caches rated ø>8.5 by students, enhancing student outcomes and course ratings.
Streamlined operations to support over 150 students across 10+ course, setting up and continuously refining scalable processes.

Lead Product Manager

May 2022 - Feb 2023

Led customer discovery and implemented technical integrations with major enterprises via EDI.
Managed the product roadmap, team structure, and directly oversaw the recruitment and coaching of engineers and product managers.

Lead Product Manager

Apr 2020 - Apr 2022

Directed a team of 2 product managers and 12 software engineers, reducing payment-related fraud by over 92% (€2.2M p.a.).
Successfully led the migration of platform infrastructure from AWS to GCP, initiating the use of microservices.
Implemented OKRs and supported due diligence processes for a significant investor round.

Co-Founder

Jun 2019 - Feb 2020

Conducted field work in regenerative agriculture and in-depth product discovery to develop a viable business model.
Achieved global Top 25 ranking in the Pioneer Tournament (by Marc Andreessen, Patrick Collison, Stephen Wolfram), securing investor interest and signing multiple B2B customer LOIs.

Product Owner

Apr 2017 - Apr 2019

Led the strategic development and management of payment teams, focusing on card lifecycle and transaction processing.
Launched the high-profile payment options Apple Pay and Google Pay across multiple European markets.
Facilitated N26's international expansion into the UK and US, optimizing the platform for multi-regional operations.

Contact

Let's build your next product

If you need a custom product or digital infrastructure but don't have an in-house engineering team, choose how you'd like to start the conversation.

schedule

Book discovery call

Ideal if you already have a project or idea and want to explore scope, timelines, and fit.

Schedule 30 minutes

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Email

Share context, documents, or a brief about what you'd like to build.

[email protected]

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LinkedIn

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