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Senior Engineer 1(UK)

Posted November 27, 2025
FullTime

Job Overview

Menlo Security's mission is enabling the world to connect, communicate and collaborate securely without compromise. COVID-19 has made our mission all the more real. We support customers across various enterprises including Fortune 500 companies, 9/10 of the largest global banks and the Department of Defense.

The world has fundamentally changed. We are growing from 400 employees into the next phase of our journey, and we need passionate talent filled with empathy and agility. The right candidate for the job is ethical, hyper-organized, fanatical about seeing things through to completion, service-oriented, and humble enough to take feedback and coaching yet confident enough to provide feedback and coaching.

Menlo is well-funded for growth and our investors are second to none. They include Vista Equity Partners (“Vista”), General Catalyst, JPMC, American Express, HSBC, and Ericsson Ventures.

Menlo Security is looking for an Engineer to join our performance team. This team makes sure our global cloud deployment is operating efficiently and at peak performance, managing our cloud hosting cost base across AWS and GCP, identifying how we can provide the best possible experience for our customers in the most efficient way. The work this team does is a vital part of our secure enterprise browser experience whilst also having a direct impact on our bottom line.

The ideal candidate is eager to learn more about security, has a background as a software engineer with experience of networked Linux systems. Our main focus is performing analysis and working closely with other teams to design and implement solutions.

What You’ll Do

  • Analyzing the performance of our production systems.

  • Participate in all aspects of designing, building and delivering solutions, learning from senior engineers

  • Designing and running load/stress programs, and ensuring that we have the right software tools for performance testing and analysis. This may require custom tools that we develop.

  • Identify and resolve software defects by reviewing log errors and metrics

  • Research new technologies to enhance our products

  • Write unit tests and automated tests to ensure code quality

  • Conduct code and design reviews for peers

Who You Are

  • You are a software developer with experience using one or more programming languages such as Python, Rust, C++, Go, JS / NodeJS

  • Experience with Linux and cloud platforms like AWS and GCP

  • Passionate about optimizing and scaling large, complex systems

  • Strong ability to learn quickly and think about complex problems analytically

  • Understanding of TCP/IP and major protocols such as HTTP, DNS and TLS

  • You have a degree in Computer Science or a related field

  • You have experience with software development in a Linux environment

  • You are proactive, self-motivated, and can learn new things with little guidance

  • You are highly organized and thorough, with critical attention to detail and documentation

What Will Make You Stand Out

  • Proven experience building large scale web applications and REST APIs

  • Experience with network protocols

  • Deep understanding of Linux

  • Knowledge of web application frameworks and test automation

  • Experience with containers, docker and Kubernetes

  • Experience with cloud infrastructure development technologies such as Terraform

     

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Why Menlo?

Our culture is collaborative, inclusive, and fun! We have five core values: Stay Aligned, Get It Done, Customer Empathy, Think Creatively and Help Each Other Out. We believe in open communication, supporting new ideas, and sharing a mutual mindset of what we’re aiming to achieve together. There are tremendous opportunities to take initiative, implement new ideas, and have a hand in building a legacy.

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.

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