Senior Engineer I(UK region)

Menlo Security is the leader in Browser Security for human and agentic workforces. Our mission is to enable humans and agents to connect, communicate, and collaborate securely, without compromise. The Menlo Browser Security Platform protects organizations from cyberattacks by stopping threats across the web, documents, and email before they reach the user. With Menlo Agent Runtime Security (MARS), that protection now extends to the AI agents working alongside every employee. Menlo Security is trusted by major global businesses, including Fortune 500 companies and government agencies, to protect their most valuable asset, their data, and is backed by top-tier investors.

About The Role

Menlo Security is looking for talented engineers to join our US/UK Web Isolation team. You will be responsible for extending and supporting our world-class remote browser technology on desktop and mobile platforms, serving millions of users on Menlo’s worldwide cloud. Example work areas include Chromium internals, networking, video/audio, advanced HTML5 features, containerization, load balancing, scaling and cost-saving; all of it with a strong security focus. The Web Isolation team is highly experienced and collegial, with a strong design and code review culture. We encourage candidates with deep systems-level experience in non-browser technology areas to apply if you feel your skill set can be applied to new challenges. The blog posting https://www.menlosecurity.com/blog/the-mobile-isolation-era-begins gives an introduction to some of those challenges.

Your Experience

The ideal candidate already understands browsers at a deep level. You have (or will gain) rich experience in Chromium internals, networking, video/audio, and advanced HTML5 features such as WebGL and WebRTC.

Requirements for the role include:

• Excellent C++ skills.
• Ability to use modern AI tooling in development workflows
• Strong knowledge of Python, Rust and Javascript are highly desirable
• Strong networking fundamentals
• Strong knowledge of HTTP security is highly desirable
• Experience implementing and maintaining features in Chromium or other browser platforms at various layers, including content, browser, core, compositor, skia and networking
• Systems-level Linux experience
• Good to have: Tornado, haproxy, AWS EC2, WebGL, WebRTC, font rendering, input experience including IME and contenteditable
• Ability to write clean, concise and maintainable code
• Strong written and verbal communication skills
• Proactive, ambitious, and strong ability to learn new things
• Highly organized and detailed with critical attention to detail and documentation
• BSc or higher degree in Computer Science or related field.

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Why Menlo?

At Menlo, we don't settle for the status quo — in our technology or our culture. How we think and act is just as important as what we build. Our culture is defined by five core mindsets: Proactive Leadership, Straight Talk, United Impact, Elevated Talent, and Customer-Compelled. We take ownership and drive outcomes without waiting to be told. We communicate directly and seek hard truths. We break down silos and win together. We hold a high bar for ourselves and the people around us. And we treat every customer interaction as mission-critical. If you're someone who sees it, owns it, solves it, and does it — you'll thrive here.

All qualified applicants will receive consideration for employment without regard to race, sex, color, religion, sexual orientation, gender identity, national origin, protected veteran status, or on the basis of disability.

TO ALL AGENCIES: Please, no phone calls or emails to any employee of Menlo Security outside of the Talent organization. Menlo Security’s policy is to only accept resumes from agencies via Ashby (ATS). Agencies must have a valid services agreement executed and must have been assigned by the Talent team to a specific requisition. Any resume submitted outside of this process will be deemed the sole property of Menlo Security. In the event a candidate submitted outside of this policy is hired, no fee or payment will be paid.