Endpoint Engineer

Posted 2 Days Ago
Be an Early Applicant
Sunnyvale, CA, USA
In-Office
150K-250K Annually
Senior level
Artificial Intelligence • Hardware • Software • Cybersecurity
The Role
Lead design and implementation of a cross-platform endpoint security agent for Windows, Linux, and macOS. Architect low-overhead detection, user-mode and kernel-level integrations, offline telemetry spooling, resilient agent lifecycle and secure distributed synchronization. Solve challenges in instrumentation, anti-tampering, and high-performance telemetry while documenting and communicating designs.
Summary Generated by Built In
Your Impact

Join a small team building the next generation of cybersecurity products from the ground up. Led by industry veterans with a proven track record of success - you will get to architect, build, and deliver hugely impactful products with this world class team. You will have the opportunity to grow your career and skills along with the company from the very start.

Role Overview

You will serve as a technical leader responsible for building our core endpoint security agent from the ground up, providing comprehensive visibility and protection across Windows, Linux, and macOS. You will architect a lightweight, highly resilient agent capable of deep OS introspection, autonomous threat prevention, and sophisticated offline telemetry spooling. You will tackle complex challenges in user-mode hooking, kernel-level behavioral analysis, anti-tampering, and distributed systems design to deliver a seamless, high-performance security client.

Required Experience
  • 5+ years of experience in systems-level programming and architecting highly concurrent applications

  • Strong Rust programming skills with a focus on high-performance, low-level OS integrations

  • Deep understanding of Windows OS internals, including ETW, IPC, Named Pipes, and Windows Services

  • Experience with cross-platform endpoint telemetry collection utilizing Linux eBPF and macOS ESF

  • Proven experience in dynamic binary instrumentation, user-mode API interception, and process injection

  • Experience designing and optimizing low-overhead threat detection heuristics directly on the endpoint

  • Knowledge of Windows kernel-mode components, specifically designing File Filter Drivers for data-in-motion tracking

  • Experience architecting resilient distributed systems with offline disk spooling and secure mTLS synchronization

  • Understanding of offensive and defensive endpoint security concepts, anti-tampering mechanisms, and process protection

  • Experience building highly reliable agent lifecycles, self-healing architectures, and fail-safe rollback mechanisms

  • Strong communication and documentation skills

  • Experience with Microsoft Anti-Malware vendor registration (ELAM, PPL) is a plus

  • Experience with browser extension development or DOM hooking is a plus

We offer competitive compensation and a comprehensive benefits package designed to support our employees’ health, well-being, and long-term success. The expected salary range for this position is $150,000 – $250,000 per year. Within this range, individual pay is determined based on job-related factors including skills, experience, qualifications, and internal equity. Most candidates can expect an offer within the range listed above. Your recruiter will provide additional details on compensation and benefits to qualified candidates during the hiring process.

We’re committed to building a diverse, inclusive workplace where everyone can do their best work. We are proud to be an equal opportunity employer and do not discriminate on the basis of race, religion, color, national origin, sex, sexual orientation, age, veteran status, disability, genetic information, or other applicable legally protected characteristic. If you require a reasonable accommodation during the application or interview process, please let us know — we’re happy to support you.

Skills Required

  • 5+ years of experience in systems-level programming and architecting highly concurrent applications
  • Strong Rust programming skills with a focus on high-performance, low-level OS integrations
  • Deep understanding of Windows OS internals, including ETW, IPC, Named Pipes, and Windows Services
  • Experience with cross-platform endpoint telemetry collection utilizing Linux eBPF and macOS ESF
  • Proven experience in dynamic binary instrumentation, user-mode API interception, and process injection
  • Experience designing and optimizing low-overhead threat detection heuristics directly on the endpoint
  • Knowledge of Windows kernel-mode components, specifically designing File Filter Drivers for data-in-motion tracking
  • Experience architecting resilient distributed systems with offline disk spooling and secure mTLS synchronization
  • Understanding of offensive and defensive endpoint security concepts, anti-tampering mechanisms, and process protection
  • Experience building highly reliable agent lifecycles, self-healing architectures, and fail-safe rollback mechanisms
  • Strong communication and documentation skills
  • Experience with Microsoft Anti-Malware vendor registration (ELAM, PPL)
  • Experience with browser extension development or DOM hooking
Am I A Good Fit?
beta
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

The Company
32 Employees
Year Founded: 2026

What We Do

Cylake is developing a complete, AI-native, data-driven cybersecurity platform for regulated organizations that require operational and data sovereignty. Designed to run on-premises or in private clouds, its system combines hardware and software to provide end-to-end protection. The platform analyzes an organization’s data and operations, delivering deep visibility and agentic security without relying on public cloud or public AI infrastructure for sensitive environments.

Similar Jobs

Thinking Machines Lab Logo Thinking Machines Lab

Endpoint Engineer, IT

Artificial Intelligence • Information Technology
In-Office
2 Locations
91 Employees
190K-300K Annually
In-Office
4 Locations
26259 Employees
110K-230K Annually
Hybrid
2 Locations
240K-250K Annually

SpaceX Logo SpaceX

Systems Engineer

Aerospace • Other
In-Office
Hawthorne, CA, USA
8879 Employees
135K-170K Annually

Similar Companies Hiring

Hanover Park Thumbnail
Artificial Intelligence • Fintech • Software • Financial Services
New York, New York
42 Employees
Kepler  Thumbnail
Fintech • Software
New York, New York
6 Employees
Onshore Thumbnail
Artificial Intelligence • Fintech • Software • Financial Services
New York, New York
60 Employees

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account