Full-Stack Engineer

ABOUT THE TEAM:

Our development team consists of specialists in frontend, backend, QA, product, and visual design. We work in small cross-functional teams that give everybody insight and hands-on experience of what everyone else is doing. Each team is self-sustained, autonomous, and responsible for a specific feature or area in our platform. We believe in strong collaboration, open communication, and mentoring to allow bi-directional growth. We are working to make Talon.One an inclusive workplace because we believe it is the right thing to do and because we want to have a positive impact on the entire tech industry.

We are looking for a mid-level Shopify Developer with a strong front-end engineering focus to help build and maintain integrations between Shopify and the Talon.One promotion engine.

In this role, you will primarily work on Talon.One front-end application and embedded Shopify apps that are used by Shopify merchants to configure, manage, and monitor how Talon.One promotions are applied in their stores. You will collaborate closely with backend engineers, product managers, and solution teams to deliver reliable, intuitive, and high-quality integration experiences.

For this position, we need professionals who are already based in Berlin or are willing to move to Berlin.

ONCE YOU ARE HERE YOU WILL:

• Build and maintain front-end applications using React and TypeScript for Shopify merchants.
• Develop and improve embedded Shopify apps, including setup flows, configuration UIs, and diagnostics.
• Integrate front-end applications with Shopify APIs (Admin API, Storefront API, Webhooks), primarily using Shopify’s GraphQL APIs.
• Collaborate with backend engineers working in Rust and Go to define and consume APIs.
• Implement clean, maintainable, and well-tested front-end code following modern best practices.
• Work closely with the Product and Solutions teams to ensure a smooth merchant experience from installation through daily use.
• Contribute to improving internal patterns, documentation, and developer experience around Shopify integrations.

WHAT WE NEED YOU TO BRING TO THE TABLE:

• Professional experience building front-end applications with React and TypeScript.
• Strong understanding of modern front-end fundamentals (component design, state management, forms, performance, accessibility).
• Experience or hands-on exposure to Shopify app development or e-commerce integrations.
• Familiarity with Shopify APIs, especially the Shopify Admin and Storefront GraphQL APIs.
• Experience integrating front-end applications with REST and/or Shopify-specific GraphQL APIs.
• Comfortable collaborating with backend engineers and working with existing backend services.
• A pragmatic mindset with attention to quality, usability, and maintainability.

STRONG PLUS, IF YOU HAVE: 

• Previous experience building embedded Shopify apps used by merchants in production.
• Working knowledge of Rust and/or Go, or willingness to learn backend technologies.
• Experience with webhooks, event-driven workflows, or async integrations.
• Exposure to checkout, cart, pricing, or promotion flows in e-commerce systems.

ABOUT TECHNOLOGY: 

• Kubernetes running on Google Cloud
• PostgreSQL
• We use Go for our API, core logic, and internal tooling
• TypeScript, React, Redux, and CSS modules for our web application
• Cypress for automated end-to-end testing
• Other odds & ends in JavaScript and shell script

• A Research and Development Department of 90+ of engineers, product managers and product designers in Berlin
• Leaders with 8+ years of experience building our promotions engine 
• €1,000 annual learning budget, full LinkedIn Learning access, and free German language courses to boost your skills
• 30 days of annual leave, plus extra paid days for your birthday and moving day
• Home office setup budget, a monthly home office allowance
• Freedom to work from abroad for up to 90 days worldwide!
• Mental health support with nilo.health and a discounted Urban Sports Club membership
• 20% company subsidy on your pension contributions
• Subsidised BVG public transport ticket and a dog-friendly Berlin office where your furry friend is welcome
• Lease your ideal bike through BusinessBike