Senior Security Engineer

vor 20 Stunden

Zürich, Zürich, Schweiz On Vollzeit

In short
At On, our technology moves fast — and our Security Engineering team ensures it moves securely fast. We don't slow innovation; we amplify it by building intelligent, automated "golden paths" that make security seamless for every engineer. We're looking for a Senior Security Engineer with a defender's mindset and a builder's heart — someone who thrives on transforming detection insights, incident learnings, and threat intelligence into code, automation, and AI-driven solutions. If you've ever thought "there has to be a smarter way to stop this before it happens", this role is for you. You'll design, automate, and scale security capabilities that let our developers move with confidence — turning lessons from today's incidents into tomorrow's prevention.

Your mission

  • Engineer and automate security intelligence: design AI-powered systems that learn from incidents, automate threat modelling, and provide high-speed, high-value feedback to developers
  • Integrate advanced testing tools (DAST, SAST, IaC scanning, container analysis) directly into CI/CD pipelines to detect exploitable weaknesses early
  • Translate real-world attack techniques into preventative controls and detection logic embedded in code and pipelines
  • Build automated feedback loops that turn incident and detection data into continuous security improvement
  • Create "golden paths" for secure engineering, crafting tools and automations that make the secure route the fastest route
  • Collaborate closely with IR and Threat Intelligence teams to evolve our secure-by-design framework using lessons learned from live incidents and red-team findings

Your story

  • Hands-on builder mindset — you have 5+ years of experience in DevSecOps, Application Security, or Security Engineering, with a strong track record of using automation to solve real-world security problems
  • Coding fluency — you're comfortable writing tools and automating workflows in languages like Python, Go, or TypeScript, and you thrive in API-driven environments
  • Engineering depth — you know your way around CI/CD pipelines (e.g., GitHub Actions) and Infrastructure as Code (e.g., Terraform), and you've successfully embedded security tools and controls directly into them
  • AI curiosity meets security impact — you're passionate about exploring how AI can revolutionise threat detection, secure code analysis, and automation — and you're ready to turn that curiosity into production-grade solutions
  • Collaborative DNA — you partner naturally with engineers and developers. You see security not as a blocker, but as an enabler of speed, innovation, and trust

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.

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