Career

Software engineering, technical leadership and freelancing

My career combines extensive hands on software engineering with technical leadership and growing responsibility for complex systems. From implementing individual features to leading and evolving complete software solutions.

Stefan Weyer

Self-employed

Employed

  1. Lead Full Stack Engineer & Software Architect

    Cookie and Pear · Nutrition coaching & SaaS · Freelance

    Impact: Building a startup's entire IT and software landscape from scratch, from backend and web platform to apps, payments and a custom design system.

  2. Lead Full Stack Engineer & Software Architect

    Tax advisory business · E-commerce & tax processing · Freelance

    Impact: Full technical ownership of a modern e-commerce and tax processing platform, from implementation and data modelling to architecture, authentication and automated tests.

  3. Senior Software Engineer, .NET & Blazor

    Practice management software provider · Veterinary software · Freelance

    Impact: Extended a cloud based practice management platform with payment, reporting and prescription workflows, and expanded it from small to farm animals.

  1. CTO, Technical Director & Lead Developer

    Mid-sized software and consulting provider · E-commerce & enterprise software · Employed

    Impact: Technology strategy, team building and infrastructure modernisation for a business critical e-commerce platform while staying hands on as lead developer.

  2. Senior Software Developer, Project & Team Lead

    Mid-sized software and consulting provider · E-commerce & enterprise software · Employed

    Impact: Built and maintained a comprehensive e-commerce suite, led the Java backend team and integrated numerous customer systems.

  3. Junior Software Developer .NET

    IT service provider for media businesses · Publishing · Employed

    Impact: Started a professional engineering career with SAP integrations and a self service solution for print subscriptions in the publishing sector.

Contact

Looking for support with a demanding software project?

I support businesses with backend engineering, modernisation, APIs and systems integration. I take architecture ownership and technical leadership where they are needed for successful delivery.

  • Available from September 2026
  • Conversations welcome now
  • Remote and hybrid
  • Mönchengladbach and Düsseldorf