We are on a mission to turn the world of grilling upside down. At KOQOON, we build intelligent grill systems that combine smart technology, strong design and real culinary ambition. To push our digital platforms forward, we’re looking for a Senior Full Stack Software Developer (m/f/x) who enjoys building modern web applications, brings fresh ideas and wants to work on an innovative smart‑grill product. You’ll be hands-on across our web and backend systems - especially our Web Portal and our Craft CMS Craft Commerce online shop. You’ll build new features, improve existing applications and ensure our platforms stay fast, stable and technically clean. a small, ambitious team with plenty of room for your own ideas modern web technologies and diverse projects a product that redefines an entire category hybrid work, flexible structures and short decision paths start-up spirit backed by the stability of an established family business Competitive compensation starting with € 70.000 as annual gross salary (14 payments, 38,5 h/week). Willingness to overpay depending on qualification and experience. Develop and maintain our custom Web Portal (React frontend, Node.js/Express backend, REST APIs) Evolve our PostgreSQL data model and integrations (Prisma ORM) Extend and maintain our Craft CMS Craft Commerce online shop (Stripe integration) and a custom WordPress marketplace (ACF, Stripe integration) Ensure smooth user management and synchronisation between systems via APIs and webhooks Improve architecture, code quality, performance and reliability Troubleshoot issues end-to-end and keep systems well‑documented 5 years of full stack development experience Strong TypeScript/JavaScript skills: React, Node.js/Express, REST APIs PostgreSQL ORM experience (Prisma preferred) Solid CSS/UI skills (MUI, Tailwind welcome) Testing experience (Jest required, Playwright nice to have) CI/CD knowledge (GitHub Actions, Azure provisioning/monitoring) Experience with Craft CMS Craft Commerce and WordPress (custom themes, ACF) Familiarity with authentication/SSO and payment integrations (Stripe) Fluent English - German is a plus, not a must We would love to hear your story — whether you are ready to apply or just want to find out more. Get in touch.