Willi Krappen

Curriculum Vitae

Background, education and skills.

Fullstack Product Engineer

Willi Krappen

Münster

Available for part-time (20–25 h/week), remote. Also as a freelance engagement.

Education

2015–2017

Media Informatics studies - TU Dresden

Left in 2017 in favour of professional practice; moved into full-time development work.

2012

Abitur (German university qualification) - final grade 1.8

Experience

2021–2024

Co-founder & technical lead - Lemonverse GmbH (Münster)

Co-founded a specialised agency for VR, AR and mixed-reality applications focused on industrial training (hands-on trainings for machine operation, maintenance, safety). VR trainings in Unreal Engine, public web projects in React and Three.js. Responsible for stack choice, build pipelines, engine work and on-site hardware setup at customer locations. Direct stakeholder contact from requirements workshops through to training internal trainers.

Clients (selection)

  • Windmöller & Hölscher
  • Allwetterzoo Münster
  • Pferdemuseum Münster
  • Stiftsmuseum Asbeck

2017–2020

Frontend developer - OPOX GmbH (Dresden)

Three years of full-time employment at a digital agency. Main project: shift-planning software for an industrial client with smart workplace assignment and automatic skill leveling from deployment history. Alongside that, React/TypeScript applications for industry and public-sector clients, in mixed Scrum teams with stakeholder communication on sprint cadences.

Clients (selection)

  • Stadt Dresden
  • BOSCH

seit 2013

Freelance developer

Continuous freelance practice running alongside the employment and the co-founded venture: web products and specialised applications for SMEs, non-profits and the public sector, focused on React/Next.js, TypeScript and Three.js. Current ongoing clients: INDRO e.V. (since 2025) and Drogenhilfe Deutschland (since 2026); the focus alongside that is on own products (pagebee.de as a multi-tenant SaaS) and engineering studies in agentic AI (multi-agent systems, AI-orchestrated editor tooling, typed tool loops).

Clients (selection)

  • Pfennigturm GmbH
  • Coilinter GmbH
  • COBE GmbH
  • parsQube GmbH
  • High Lights GmbH
  • Drogenhilfe Deutschland
  • INDRO e.V.

2012

Internship - Onsult IT Services

Worked on software for car dealerships using HTML, CSS and PHP.

Vita

Skills

Core

  • TypeScript
  • React / Next.js
  • Tailwind / shadcn
  • Node
  • Three.js / R3F
  • Anthropic SDK
  • Postgres / Prisma

In active use

  • Express / Hono
  • BullMQ / Redis
  • WebSockets / SSE
  • Docker
  • nginx / PM2
  • Git / Scrum
  • UNIX / Linux Serveradministration
  • Windsurf / Cursor / Claude Code

Familiar

  • Python
  • PHP
  • MongoDB
  • Drizzle

More

Languages

  • GermanNative
  • EnglishC2
  • FrenchA2

Driving licence

Class B

Misc

3D printing / CADEDA / embedded programmingPCB designDrone piloting (cine / race)