Full-Stack Engineer – POS Platforms

In short

At On, technology is more than just support—it’s a catalyst for movement. As we expand our global retail footprint, we’re reimagining the Point of Sale experience to be as premium, customer-centric, and innovation-driven as our brand. We’re seeking a Full-Stack Engineer to help power the next generation of POS platforms—solutions that enable frictionless checkout, real-time inventory, omnichannel excellence, and seamless integration across our digital and physical retail ecosystems. Based in Berlin, you’ll be a core contributor on the Retail Experience team, building modern interfaces and performant backends that bring our retail vision to life. This is a hands-on engineering role with broad technical ownership—spanning frontend (React/TypeScript), backend (Node.js or equivalent), and API orchestration. If you’re excited by streaming platforms, composable commerce, and building experiences that directly impact athletes and customers around the globe, let’s move together.

Your Mission

• POS Frontend & Backend Development: Build intuitive, fast, and resilient user interfaces using React, TypeScript, and modern frontend tooling Develop scalable backend logic (Node.js or equivalent) to support retail data flows, system integrations, and business rules
• Systems Integration & API Engineering: Integrate with REST and GraphQL APIs across commerce, ERP, payment, and inventory systems Build secure, observable services that handle real-time and asynchronous data exchange Work with mobile-first and PWA design principles to support a variety of in-store form factors
• Platform Architecture & Resilience: Help shape the architecture of On’s POS platforms with a focus on flexibility, scale, and high availability Contribute to platform observability and monitoring using industry-standard tooling Implement robust testing across unit, integration, and end-to-end layers—automating quality at every stage Cross-functional Collaboration: Work closely with product stakeholders to bring ideas to life Influence technical decisions during vendor evaluations and rollout phases Impact roadmap decisions by sharing technical insights and platform implications Participate in agile rituals, code reviews, and engineering best practices

Your story

• 5+ years of full-stack development experience in high-performance, customer- or employee-facing applications
• Deep expertise in React, TypeScript, and modern JavaScript (ES6+)
• Proficient backend development skills—Node.js preferred, but open to equivalent modern stacks
• Strong understanding of REST and GraphQL APIs, including authentication, caching, pagination, and error handling
• Experience designing and building retail or commerce workflows such as checkout, loyalty, or order sync
• Familiarity with headless commerce, microservices, and composable architectures
• Solid understanding of testing methodologies: unit, integration, component, contract, and end-to-end
• Hands-on experience with CI/CD pipelines, Git workflows, and Agile methodologies
• Comfortable working in a fast-paced, evolving environment with cross-disciplinary teams

What to expect

We want to set everyone up for success, so here’s the lowdown on how we hire. Our process is a two-way street – bringing you into our culture, while helping us learn how you think.

Our full process can last about eight weeks from application to offer, because we care about getting it right. These steps explain how we usually do things.

Before you get started, feel free to consider if you want to work with us. Strange question? Well, we give people a lot of space to navigate their day-to-day and that style isn't for everyone. We want you to be passionate about what you do and be sure this is the right fit. Because when skills and passion combine – it creates that 'Wow' moment.

• Step One

  It starts with you...

  You'll start by submitting your application to a specific role. We try to keep this step as simple as possible. We do get a lot of applications, but we review them all. We ask that you allow around 14 days for us to come back to you with a response. If you are a good fit to the role, someone will follow up with you within that window. If you didn't receive a reply, or were unsuccessful this time around, we encourage you to look for other possible matches at On.

• Step Two

  Interview with a recruiter

  What ignites your spirit? This is where we’ll start getting to know all about you and what makes you tick – and it’s your first chance to get a feel for our culture. Chatting with a member of our talent team, you’ll learn more about On and how we work. We’ll learn about what motivates you and what you could bring to the team.

• Step Three

  Interview with a hiring manager

  Ready to dig into the details? This second interview will be held with your future manager and will focus on the specifics of the job. Together you’ll delve into your unique skills and experiences and how they could be relevant at On. It's also a time to assess how you might feel working side-by-side. Bring any questions you have about the job, the team or anything else you might like to know – this is an open forum.

• Step Four

  The Case Study

  What's your style? This task will help us understand how you think, face a challenge and give insight into your novel ideas. Designed to give everyone their best shot, your case study is based on something you might typically experience on the job. This is your chance to show us what you’ve got. So express yourself. Be you.

• Step Five

  The Experience Day

  Your first taste of the Oniverse. This is a time to meet some of the people you'll be working closest with. In person or virtually, you'll get a feel for the day-to-day at On and the people who make it happen. You'll chat with a few potential teammates - the conversations will be as equally driven by the role and your experience as by our values. We believe how you do things is just as important as what you do.

• Step Six

  The Result

  Are we a good fit? We’ll get together internally to share our feedback and decide if we’re a match. We know that job searching is a big time investment, so it’s not a decision we take lightly. It’s also time for you to reflect on the experience – are we the right place for you? No matter the outcome, we’ll give you meaningful feedback.

Step One:

It starts with you...

You'll start by submitting your application to a specific role.

We try to keep this step as simple as possible. We do get a lot of applications, but we review them all. We ask that you allow around 14 days for us to come back to you with a response. If you are a good fit to the role, someone will follow up with you within that window. If you didn't receive a reply, or were unsuccessful this time around, we encourage you to look for other possible matches at On.