In short

In the dynamic landscape of On, the tech thrives much like a spirited runner: always moving, always improving. We are building technology that continues to supercharge the growth of On, helping to ignite the human spirit through movement. We’re seeking a Staff Site Reliability Engineer to ensure our digital platforms deliver exceptional performance, reliability, and scalability to support our global customer base.

As a Staff Site Reliability Engineer (SRE) at On, you will play a pivotal role in designing, building, and maintaining our cloud infrastructure to support our e-commerce platforms, customer-facing applications, and internal systems. You will work closely with engineering teams to drive reliability, optimise performance, and implement automation, serving as a technical expert and mentor within the team.

Your Mission

  • System Reliability & Performance: Ensure high availability (99.99%+ uptime), scalability, and performance of On’s digital platforms through proactive optimisation and robust infrastructure design.
  • Infrastructure Development: Build and maintain cloud-based infrastructure using Infrastructure-as-Code (IaC) tools.
  • Automation: Develop and implement automation solutions to streamline deployments, reduce toil, and enhance monitoring.
  • Incident Response: Lead incident resolution, perform root cause analyses, and implement preventive measures to minimise downtime and improve system resilience.
  • Monitoring & Observability: Design and maintain monitoring, logging, and alerting systems to ensure proactive issue detection and resolution.
  • Collaboration: Partner with software engineering, product, and security teams to align infrastructure with business objectives and ensure secure, scalable systems.
  • Capacity Planning: Analyse and forecast infrastructure needs to support On’s growth, balancing performance and cost efficiency.
  • Mentorship: Provide technical guidance and mentorship, fostering a culture of continuous learning and improvement.
  • Compliance & Security: Ensure systems meet industry standards for data privacy and security.
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

  • Extensive experience in site reliability engineering with a track record of managing complex, high-traffic systems.
  • Strong expertise in cloud platforms (GCP) and container orchestration (Kubernetes, GKE).
  • Proficiency in scripting and programming (e.g. in Python, Go) for automation and tooling.
  • Experience with CI/CD pipelines (ArgoCD, GitHub Actions) and IaC (Terraform).
  • Solid understanding of networking, load balancing, and DNS management.
  • Experience with observability and monitoring for cloud native environments.
  • Strong analytical skills with a proactive approach to resolving complex technical challenges.
  • Excellent communication skills, with the ability to explain technical concepts to diverse stakeholders.

Nice to Have:

  • Experience with e-commerce platforms or high-traffic consumer applications.
  • Background in performance engineering, including load testing and capacity optimisation for peak traffic events (e.g., product launches, Black Friday).
  • Experience optimising global content delivery networks (CDNs) for low-latency, high-performance user experiences (e.g., Cloudflare).
  • Bachelor’s degree in Computer Science, Engineering, or a related field (or equivalent experience).
two women sitting at a table talking with laptops

About the Team

You will join a skilled and dynamic team of cloud & site reliability engineers dedicated to transforming On’s technological foundation. We are crafting scalable, resilient cloud solutions to power internal operations, enhance product performance, and support On’s growth. As a key member of our team, you will shape our cloud infrastructure strategy, ensuring robust, efficient, and sustainable systems that drive innovation. Join us in Berlin, to make a lasting impact on On’s digital future!

See more
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
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

Woman laughing as she plays ping pong in the office!

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

    Head of Operations Project Portfolio Management

    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

    Director of Engineering

    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.
Happy women smiling and chatting in the office

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.