In short

Are you passionate about building scalable systems that empower teams and drive innovation?

Join our Product Core Technology team as a Backend Software Engineer, where you'll help architect, build and maintain GraphQL APIs, Kafka-based, distributed event-driven systems that power our global operations.

You'll play a key role in ensuring that Product Information flows efficiently across platforms, including our website, mobile app, internal applications and external partners. You will directly contribute in turning Product Data into a strategic competitive advantage, accelerating the speed of On’s innovation and go-to-market.

Your work will enable R&D, product creators and managers, copy and translators, studio and marketing teams to access, manage, and distribute product data with ease.

If you thrive on solving complex technical challenges, designing high-performance systems, and collaborating across teams, this role is for you!

Your Mission

In Your First Month:

  • Get to know On's product data ecosystem and infrastructure
  • Build relationships with key stakeholders across R&D, product, marketing, engineering, and studio teams
  • Contribute to code reviews, ensuring high-quality, secure, and well-tested code

After Three Months:

  • Implement new features and services to enhance our data infrastructure
  • Contribute to our GraphQL API development
  • Work on our Kafka-based event streaming system for real-time data distribution

After Six Months and Beyond:

  • Identify and implement architectural improvements for scalability and performance
  • Streamline data management processes and simplify existing systems
  • Champion best practices for API development within the team

Your Responsibilities

  • Develop & maintain robust, scalable backend systems using TypeScript and Node.js (experience with Ruby is a plus)
  • Leverage event-driven architecture, utilizing Kafka for real-time data streaming
  • Collaborate cross-functionally with product managers, marketers, and studio teams to understand their data needs and deliver effective solutions
  • Document technical architecture and share knowledge with your team
Group of girls smiling
  • Man and woman sat at desks talking
  • Open planned office with men and women sat on a a large curved sofa
  • Group of runners talking outside the office
  • A team of people sat on the steps with a view of mountains outside the office.
  • Two women smiling at each other in a meeting room with large curved windows
  • A group of people sat around a table looking at large design papers
  • 3 men sat around with laptops smiling at each other
  • a large group of runners holding an On flag smiling at the camera
  • Man and woman sat at desks talking
  • Open planned office with men and women sat on a a large curved sofa
  • Group of runners talking outside the office
  • A team of people sat on the steps with a view of mountains outside the office.
  • Two women smiling at each other in a meeting room with large curved windows
  • A group of people sat around a table looking at large design papers
  • 3 men sat around with laptops smiling at each other
  • a large group of runners holding an On flag smiling at the camera
  • Man and woman sat at desks talking
  • Open planned office with men and women sat on a a large curved sofa
  • Group of runners talking outside the office
  • A team of people sat on the steps with a view of mountains outside the office.
  • Two women smiling at each other in a meeting room with large curved windows
  • A group of people sat around a table looking at large design papers
  • 3 men sat around with laptops smiling at each other
  • a large group of runners holding an On flag smiling at the camera

Your story

  • Experienced in backend development, particularly with Node.js and TypeScript
  • Experience in building GraphQL APIs
  • Familiar with event-driven architecture and event streaming (Kafka experience is a big plus)
  • Solid understanding of SQL or NoSQL database systems
  • Great communicator who can explain technical concepts to non-technical stakeholders
  • A self-starter who can work self sufficiently and drive projects forward
  • Excited to experiment, explore new technologies, and help shape a growing area of our business
  • Comfortable with complexity, ambiguity, and can pivot based on new information
  • See the bigger picture and understand the long-term roadmap while balancing short-term priorities

Bonus Points If You Have:

  • Hands-on experience with AWS or GCP
  • Previous experience with AI and ML or strong personal interest
  • Experience with Docker and Kubernetes
  • A track record of building internal tools that improve workflows
  • A passion for sports
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About the Team

Product Core Technology is a newly established cluster within On’s Technology organization, dedicated to shaping the digital foundation of our physical products, the beating heart of the company. We collaborate with a wide range of key stakeholders across On, acting as both domain experts and enablers. Our mission is to architect and enhance On’s core product data infrastructure, empowering teams to drive efficient, sustainable, and forward-thinking innovation. We’re a small but highly motivated team of engineers with big ambitions and a rapidly expanding roadmap. It’s an exciting time to join us on this journey

See more
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A man in a blue shirt and a white t-shirt with a headset on is standing with his arms crossed and holding his chin looking into the distance

Explorer

Explorer

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Our team exists to think differently. Wild curiosity and a thirst for knowledge keeps moving our tech forward. There are no boxes here. We’re always dreaming of what’s possible – and searching for new ways to get there. 

Learn about out Spirits
  • Portrait of a woman smiling in the On Zürich office

    Gioia

    Technical Product Team, Zürich

    My journey has evolved for sure and, actually, change can lead to infinite possibilities. Those core values that were there when I joined are still here today and I really find them extraordinary every day.
  • A man standing in a modern office looking at the camera, smiling slightly.

    Vivek Juneja

    Engineering, Berlin

    We’re closely connected to the whole business. Every day, we’re making quick decisions to improve the customer experience. Because these live changes impact the whole business, we deeply respect individual opinion and what others think about the end customer experience.
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What we offer

On is a place that is centered around growth and progress. We offer an environment designed to give people the tools to develop holistically – to stay active, to learn, explore and innovate. Our distinctive approach combines a supportive, team-oriented atmosphere, with access to personal self-care for both physical and mental well-being, so each person is led by purpose.

On is an Equal Opportunity Employer. We are committed to creating a work environment that is fair and inclusive, where all decisions related to recruitment, advancement, and retention are free of discrimination.

Build the better you

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.