Career

Software engineering, technical leadership & 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

Has your backend grown difficult to change, or is the project stuck?

I help when bugs are hard to trace, new integrations are needed, or the team needs someone to connect architecture with hands-on delivery.

A good fit when …

  • an established backend has become difficult to change
  • several systems or APIs need to work together
  • technical ownership needs to be shared or clarified
  • Available now
  • Conversations welcome now
  • Remote and hybrid
  • Mönchengladbach and Düsseldorf