Senior Engineer I(UK region)
This is the employer's own posting, not a copy on a job board.
What we know
Is it still open?
Confirmed still open
Last checked 22h ago — checked against the employer's own applicant tracking system, which is the company answering directly.
We re-read the employer's own applicant tracking system and the posting was still there. That is the company answering directly.
How old is it?
Posted 152d ago
The date the source published, not the day we noticed it (2026-04-15). Last seen at its source 2h ago.
Is it remote?
Marked remote on the employer's board
Their board carries a remote setting on this posting — a field they filled in, not wording we read. The location field names somewhere specific, which is usually where the team or the entity sits.
Who may apply?
EMEA, United Kingdom
The description states no restriction of its own. This is the source's own tag.
Pay not stated
Similar roles pay €70.6k–104k/yr
Middle 50% of 40 listings that do state pay — Engineering · Senior · EMEA · EUR/year. This employer has published no salary; this is what comparable listings we hold disclose, never converted between currencies or periods. How this is calculated.
Skills named in the ad
Recognised terms only, from a fixed vocabulary — this is what CV matching compares against.
Carried by 1 source
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ashby employer's own board first seen 11d ago · last seen 2h ago
The listing
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.
MSGL-I4
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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.