Description

Senior software developer with over 25 years of professional experience. I have freelanced, cofounded companies and worked as CTO, as department manager, and have written 2 books. Currently I am a lead developer in a fullstack role.

Industry field of expertise

Languages

English
Native or bilingual
German
Native or bilingual
Spanish
Basic
Italian
Basic

Workplace preferences

Can work on-site

Berlin (up to 10km)

Next Logistics Ventures GmbH
Lead Developer
LOGISTICS AND SUPPLY CHAIN
October 2022 - April 2024 (1 year and 7 months)
Berlin, Germany
I have worked on a chartering software for the shipping industry.

Goals:

Introduce Node.js based backend
Add new features
Reduce technical debt

Highlights:

Technology selection for Node.js backend
Led frontend team of 3 developers besides me
Designed and coordinated release process
Highly self organized setting
Coached 2 end to end test engineers and 1 manual test engineer
TypeScript Node.js NestJS MySQL Docker Redis React.js Redux Jira CI REST OpenAPI Docker TypeORM GraphQL Cypress Mapbox Stripe
Parloa
Frontend Developer – AI-based Agents for Contact Centers
SOFTWARE PUBLISHING
March 2025 - Today (1 year and 4 months)
Berlin, Germany
Designed and implemented server-driven UI (SDUI) package enabling backend developers to build service UIs without frontend bottlenecks. SDUI standardized UI development across engineering organization.

Environment: AI scaleup, 300+ people, $1 billion valuation. Customers: Booking.com, American Express, Decathlon, Generali, Allianz, TUI. 9-person platform team building strategic frontend technology.

Other contributions:

• Evaluations system
• GPT-5 integration
• Multi-agency
• AI agent tools preferences
• Component library (based on Ant Design)

Built primarily using agentic AI (Claude Code).
Claude Code Next.js Ant Design React.js tRPC
Confidential
Lead Frontend Developer
SOFTWARE PUBLISHING
July 2021 - August 2022 (1 year and 2 months)
Berlin, Germany
This project was 4 years old when I joined. The code base was showing the symptoms of legacy code and caused severe problems for the customer.

Goals:

Reduce technical debt and modernize the code base
Improve quality
Ship new features

Highlights:

Directed and coached frontend team
New team consistently shipped more features than previous team
Migrated the code from JavaScript to TypeScript
Established a quality strategy
Introduced automated tests
Replaced hand built components with a industry standard component library
Modernized code from old React patterns
Added REST client code generation from OpenAPI specs
Mentored intern
TypeScript React.js Redux Ant Design OpenAPI REST Git GitLab HTML5 CSS3 Continuous Integration Styled Components React Testing Library react-query Jest