Senior Linux Endpoint Engineer

About the Company

Our client is a San Francisco-based cybersecurity startup helping organizations secure and manage sensitive data. Their AI-powered platform discovers, classifies, and protects sensitive data across cloud applications, infrastructure, endpoints, and AI tools, preventing data leaks and helping enterprises maintain compliance.

About the Product

The company has built one of the first AI-native Data Loss Prevention (DLP) platforms, protecting sensitive data across SaaS applications, cloud infrastructure, endpoints, and AI tools.

Today, the platform already includes mature endpoint products for macOS and Windows. The next strategic step is building Linux support from the ground up, creating a production-grade Linux endpoint agent that delivers the same enterprise-grade capabilities across all platforms.

About the Role

We are looking for a Founding Senior Linux Endpoint Engineer to lead the development of our Linux endpoint platform.

As one of the first Linux engineers on the team, you will play a key role in defining the architecture, designing core components, and building a production-ready Linux endpoint agent from scratch. You'll work closely with the existing macOS and Windows engineering teams while driving the technical direction of Linux development.

This is a highly impactful role for someone who enjoys solving complex systems problems, building products from the ground up, and taking ownership in a fast-moving startup environment.

Responsibilities

• Design and build a production-grade Linux endpoint agent from the ground up.

• Develop kernel-space and user-space components for endpoint protection.

• Design scalable architecture for Linux endpoint capabilities.

• Build security features for monitoring and protecting sensitive data across Linux systems.

• Work with Linux kernel subsystems related to file systems, processes, networking, and security.

• Collaborate closely with macOS and Windows engineering teams to ensure consistent cross-platform functionality.

• Lead technical design discussions and make key architectural decisions.

• Own features end-to-end, from design and implementation to testing and production deployment.

• Troubleshoot and resolve complex Linux kernel and system-level issues.

• Mentor engineers as the Linux team grows and help establish engineering best practices.

Requirements

• 12+ years of software engineering experience.

• 4+ years of commercial Linux kernel development experience.

• 4+ years of commercial experience developing cybersecurity products such as XDR, EDR, EPP, MDR, DLP, Antivirus, or similar.

• Strong expertise working in Linux kernel space, including file systems, process management, or networking.

• Extensive experience developing Linux system-level software or endpoint agents.

• Strong C/C++ programming skills.

• Experience building products or major platform components from scratch.

• Experience driving technical decisions and contributing to software architecture.

• Strong understanding of Linux internals and operating system concepts.

• Ability to work independently and thrive in a startup environment.

• Curiosity, ownership mindset, and willingness to step outside your comfort zone.

Nice to Have

• Experience with eBPF.

• Linux Security Modules (SELinux, AppArmor, or LSM).

• fanotify, inotify, Netlink, FUSE, or OverlayFS.

• Go programming experience.

• Experience with container technologies such as Docker or Kubernetes.

• Experience developing DLP, EDR, XDR, or other endpoint security products.

• Contributions to open-source Linux projects.

What We Offer

• Long-term remote opportunity.

• Opportunity to become one of the founding engineers of the Linux platform.

• High level of ownership and technical influence.

• International engineering team.

• Open, transparent, and collaborative work environment.

• Career growth in a fast-growing cybersecurity startup.