Staff/Principal Linux Infrastructure Engineer

About this role

We are looking for a Staff/Principal Linux Infrastructure Engineer with deep expertise in Linux development, network driver creation, and performance optimization. In this hands-on, high-impact role, you will work directly in our TrustedServer Team to create and refine the core systems that drive ExpressVPN’s infrastructure. This role is ideal for a Linux expert with a record of notable contributions to the kernel or other relevant communities and a history of published research in the field.

What you’ll be Do:

• Develop, optimize, and maintain TrustedServer collaboratively with the team, ensuring this foundational technology continues to serve as the secure backbone of our global services.
• Lead advanced Linux development projects and maintain active contributions to the Linux and relevant communities, with a focus on optimizing network drivers and enhancing system performance.
• Create and maintain dedicated environments and labs to rigorously test and optimize system performance; analyze results and implement improvements that increase system speed, resilience, and scalability.
• Network Driver Development: Develop and refine custom network drivers tailored to the high-demand needs of our digital privacy and performance solutions.
• Write clear, comprehensive technical designs and test plans, ensuring complex infrastructure projects are heavily de-risked and cleanly architected.

What you’ll bring:

• Minimum of 7 years in Linux infrastructure and Linux development, with documented contributions to kernel or relevant repositories.
• Demonstrated experience in network driver development, performance testing frameworks, and significant contributions to the Linux and relevant communities.
• Deep expertise in C++/Rust programming, Linux kernel architecture, and network protocols.
• Advanced capabilities in performance tuning and development of testing frameworks.
• Strong analytical and problem-solving skills, with a hands-on, proactive approach to systems architecture and performance optimization.
• Degree in Computer Science, Computer Engineering, or a related field.

Nice to have:

• History of published research in systems performance, networking, or kernel architecture.
• Expertise in computer security, cryptography, secure coding practices, or public key infrastructure.
• Familiarity with modern VPN protocols, including WireGuard or our own open-source protocol, Lightway.

What we offer:

• Work with a modern tech stack in a strong engineering culture
• Influence on technical decisions and room to innovate
• Continuous learning opportunities and support for professional development
• A motivated, collaborative team with extensive experience
• A strategic role with real technical influence and ownership
• A modern engineering culture with CI/CD, observability, and a strong code review culture
• Purpose-driven work: we value security, quality, and depth over quick hacks

#LI-PS1

Before you apply

• At the moment, we do not sponsor visas in the EU. For Hong Kong, we require at least two years of working experience and a university degree in a related field. For Singapore and the UK, we can only sponsor visas for mid-career or above.
• Please upload your resume as a PDF and do not include any salary or compensation information in it.

ExpressVPN is one of the world’s leading providers of online privacy and security services for consumers. Started in 2009, we’ve grown to have millions of active paying customers, a team of more than 700 people worldwide, and a brand recognized by hundreds of millions of people in 18 languages and more than a hundred countries. We see huge growth in our industry, and are gaining market share through strong execution.