Backend Developer / Programmer (f/m/d)

Stellenbeschreibung:

Shopify Themes
On behalf of our customers, we develop individual storefronts (also called themes in Shopify) for their online stores. These are server‑side rendered templates that are implemented with the Shopify template language Liquid as well as HTML, CSS, and JavaScript.

Shopify apps (plugins)
Extensions for Shopify are called Shopify Apps. They are plugins to add new functions to the system. We develop them in the backend using Ruby on Rails and in the frontend using React. These apps include both our own Shopify apps and plugins for other software providers and merchants.

Headless E‑Commerce Architecture
We use Ruby on Rails to build robust, scalable APIs that power modern e‑commerce experiences for clients with sophisticated backend requirements.

Custom backend solutions
We develop tailored backend solutions for complex e‑commerce requirements, integrating various third‑party services and ensuring high performance and security.

Your Responsibilities

  • Architect and develop sophisticated backend solutions for our Shopify projects
  • Design, implement, and maintain REST and GraphQL APIs
  • Develop custom Shopify Apps using Ruby on Rails
  • Work closely with frontend developers, UI/UX designers, and clients to implement complex requirements
  • Integrate third‑party services (payment gateways, search engines, CRM, PIM, ERP systems)
  • Ensure application security, performance optimization, and scalability
  • Implement automated testing and continuous integration
  • Participate in code reviews and maintain high code quality standards

Your profile

Must‑have:

  • Senior‑level experience with Ruby on Rails or similar frameworks (Laravel, Phoenix)
  • Strong knowledge of REST API design and implementation
  • Experience with database design and query optimization
  • Solid understanding of software design patterns and principles
  • Expertise in version control systems (Git)
  • Experience with automated testing (unit, integration, E2E)
  • Fluent in German or English (spoken and written)
  • Residence within the EU (we do not sponsor work visas)

Nice‑to‑have:

  • Experience with the Shopify ecosystem and Shopify API
  • Knowledge of GraphQL
  • Experience with Shopify’s Liquid templating system
  • Experience with cloud services (AWS, GCP, Azure)
  • Familiarity with containerization (Docker, Kubernetes)
  • Understanding of CI/CD pipelines
  • Experience with performance optimization and scaling of e‑commerce applications
  • Knowledge of web application security

Benefits

  • Minimum 50% remote work (home office) – 100% remote possible
  • Flexible working hours / flexitime with core time
  • Modern hardware (Apple)
  • Beverages in the office
  • Fresh (organic) fruit in the office every week
  • Education budget, additional health insurance, Babbel subscription incl. live lessons, gym, team events, and more

We especially encourage women and other underrepresented groups in tech to apply!

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Stelleninformationen

  • Veröffentlichungsdatum:

    10 Mai 2026
  • Standort:

    Wuppertal
  • Typ:

    Vollzeit
  • Arbeitsmodell:

    Vor Ort
  • Kategorie:

  • Erfahrung:

    2+ years
  • Arbeitsverhältnis:

    Angestellt

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