Senior Application Security Engineer

Sonos, Inc.; Glasgow; On-site; GBP 70,000 - 90,000; Full time

Job summary

Sonos, Inc. in Glasgow is looking for a Senior Product Security Engineer to enhance product security practices. You will own the execution layer of product security, ensuring consistent and measurable practices across cloud, mobile, and embedded environments. The ideal candidate will have over 4 years of relevant experience and a strong background in security tooling integration.

The position directly impacts Sonos' ability to meet regulatory requirements and enhances the entire engineering team's security confidence.

Qualifications

• 4+ years of experience in software engineering, application security, or product security.
• Experience working directly with engineering teams in software development environments.
• Experience working with IoT products, connected devices, or embedded systems preferred.

Responsibilities

• Own the execution layer of product security across cloud, mobile, and embedded engineering.
• Deploy and operationalize security tooling in engineering workflows.
• Support vulnerability intake, triage, and coordinated disclosure processes.

Skills

Experience integrating security practices and tooling into CI/CD pipelines.

Experience scoping or coordinating penetration testing engagements.

4+ years in software engineering, application security, or product security

Hands-on experience implementing and operationalizing security tooling

Using AI tools to automate security practices

Tools

SAST

SCA

DAST

Secrets scanning

Job description

Senior Product Security Engineer

At Sonos we want to create the ultimate listening experience for our customers and know that it starts by listening to each other. As part of the Sonos team, you’ll collaborate with people of all styles, skill sets, and backgrounds to realize our vision while fostering a community where everyone feels included and empowered to do the best work of their lives.

About Sonos

At Sonos, we create the world’s leading sound experiences. Our products span connected speakers, mobile applications, and cloud services — a technically diverse ecosystem where security is built into every layer.

What You’ll Do

You’ll own the execution layer of product security — the systems, tooling, and processes that make security practice consistent and measurable across cloud, mobile, and embedded engineering domains.

Security tooling and CI/CD integration

• Deploy and operationalize SAST, SCA, secrets scanning, DAST, and SBOM generation across engineering workflows
• Integrate security tooling into CI/CD pipelines in partnership with Engineering Productivity teams. Ensure tooling produces high-signal, low-noise output that engineers engage with.

Security testing and penetration testing

• Define scalable security testing practices across cloud, mobile, web, and connected devices
• Scope, coordinate, and interpret results from third‑party penetration testing engagements, including IoT and firmware assessments. Translate findings into clear remediation plans and track them through to closure.

Threat modeling and secure design

• Support and scale threat modeling across cloud, mobile, and embedded domains including device‑cloud‑mobile trust boundaries
• Provide practical secure design guidance throughout the SDLC — automating the groundwork wherever possible.

Vulnerability response and compliance

• Support vulnerability intake, triage, and coordinated disclosure processes.
• Partner with compliance and legal stakeholders to ensure security practices are auditable and regulatory‑aligned

Automate and scale security practice

• Build and extend AI‑powered tooling that encodes security guidelines as agent skills
• Replace static security documentation with automated workflows that embed security practice directly into engineering teams

What You’ll Bring

• 4+ years in software engineering, application security, or product security
• Experience working directly with engineering teams in modern software development environments
• Hands‑on experience implementing and operationalizing security tooling: SAST, SCA, DAST, secrets scanning, or similar
• Experience integrating security practices and tooling into CI/CD pipelines.
• Experience using AI tools to automate security practices and previously manual activities
• Experience scoping or coordinating penetration testing engagements and working with the results; experience with IoT or embedded device assessments is a strong plus
• Experience working with IoT products, connected devices, or embedded systems is preferred but not required

Why This Role Matters

Sonos is in the transition from defining product security practices to executing them at scale. The tooling decisions are largely made, the strategy is set, and the regulatory requirements are real. What’s needed now is an engineer who can make it all work in practice — across cloud, mobile, and embedded domains — in a way that developers actually adopt.

This role directly shapes:

• How securely Sonos products are built — not in theory, but in day‑to‑day engineering practice
• Sonos’ ability to meet EU Cyber Resilience Act requirements, including PSIRT readiness and vulnerability reporting obligations
• The engineering team’s confidence in their security posture, from SBOM generation to penetration test outcomes
• The scalability of a small Product Security team supporting a large, distributed engineering organization