Parcelly - CTO (permanent role)

  • Scaled both the platform and the engineering organisation after Series A funding

  • Integrated major clients like DHL Express, UPS and Krispy Kreme across multiple regions (UK, US and EU)

  • Enabled international expansion into US and EU markets (Germany, Ireland)

  • Developed a scalable API for courier clients

  • Shifted company strategy from growth orientation to profitability

  • Increased automation level by over 60%

Technologies: Cloud (CircleCI, Heroku, AWS, Cloudflare), Objective-C, Ruby on Rails, Swift, enterprise iOS distribution, observability (Datadog & Sentry)

 

FooDude - Freelance CTO & Lead Engineer

  • Evolved the app from a simple grocery-list tool into a voice-controlled recipe platform with content from celebrity chefs - like Cornelia Poletto or Mike Süßer

  • Developed a hybrid business model combining subscriptions with branded content (e.g. Barilla)

  • Prepared the migration to a scalable cloud architecture to support traffic spikes after TV and media exposure

  • Expanded the backend utalising Node. and Firebase/Google Cloud Functions to enable faster feature delivery and improved automation

Technologien: Swift / iOS, Objective-C, Node.js, Firebase, Google Cloud Functions, Cloudflare, AWS, legacy backend in PHP Symphonie

 

Evermore - Technical Leadership, Backend Development & Product Workshops

  • Conducted a conception and design workshop with the client Evangelische Kirche Hannover to shape user experience and feature direction

  • Successfully relaunched the Evermore app (App Store rating 4.7)

  • Built a scalable and robust backend with REST APIs using Ruby on Rails

  • Extended the platform to support audio content

  • Executed hand-over of the project to the client’s internal development team

Technologies: Ruby on Rails, CDN, Cloud Infrastructure (Heroku, AWS), Swift / iOS, Kotlin / Android