One contact, complete delivery
I build web applications and SaaS products from initial idea to production-ready systems. Lean collaboration, direct communication, fast iteration – over 10 years of experience with TypeScript, React, Node.js, and AI integrations.
What I bring
- 10+ Years Full-Stack TypeScript, React, Svelte, Next.js, Node.js, PostgreSQL – rapid iteration, sustainable architecture
- Architecture & System Design From prototype to production – scalable APIs, clean data models, maintainable code
- Startup & Enterprise Experience Douglas, sipgate, and various scale-ups: Frontnow, Energybox
- Technical Leadership Architecture decisions, mentoring, product-level thinking – can develop hands-on or lead strategically
- 20-40h/week
- Flexible availability
Services
System Planning
Architecture design for new projects: tech stack selection, data modeling, API design, and infrastructure planning.
System Audit
Analysis of existing systems: performance bottlenecks, security risks, technical debt, and scalability.
Roadmap & Cleanup
Technical roadmap for grown codebases: prioritized modernization, step-by-step migration, documentation.
MVP & SaaS
Development of Minimum Viable Products and SaaS extensions: from validation to paying customer.
Featured Projects
maklerupdate.de
Platform for automatic monitoring of 50+ real estate agents in the Greater Düsseldorf area (goal: 400), completely replacing manual website checks through AI-powered property extraction and daily crawling
Kuvio Studio
AI-powered image editing for real estate professionals – Virtual Staging, Declutter, and atmosphere transformations
tourvy.com
Development of an AI-powered travel planning software that generates complete travel offers in under 5 minutes through a 10-stage AI pipeline, reducing manual planning time by 90%
Kontor
Personal invoicing tool since 2020 – rebranded to Kontor in 2025 (no good domain available for 'Easy Invoice', and 'Kontor' sounds trustworthy). Complete invoice management with expense tracking and team collaboration for German freelancers and small businesses, 8€/month
Projects & Full-time Positions
Development of a scalable AI product enrichment system that automatically enhances 100,000+ e-commerce products per shop and automates time-consuming manual processes
Development and maintenance of central platform infrastructure to support feature teams with reusable components, performance monitoring tools, code quality standards, and mentoring
Integration of social commerce features with Livebuy.io video player and optimization of Web Vitals for improved user experience
Leading fullstack development of a B2B platform with successful migration from Firebase to Supabase and implementation of scalable data collection systems
Architecture and re-development of a vehicle platform with complex multi-step checkout system and custom React components for 360° vehicle views
Technologies & Skills
Frontend
Backend
AI Integration
Datenbanken
Testing
Tools & DevOps
E-Commerce
Methodiken
Clients & Projects
