Endpoint Engineer - Windows
Role Overview
This senior-level endpoint engineer role focuses on designing and developing data exfiltration prevention applications, drivers, and services on Windows. The engineer will maintain mission-critical agents, own complex features from design to delivery, and troubleshoot customer issues, ensuring secure software development. This position requires deep expertise in Windows internals and contributes directly to Nightfall's core data protection platform.
Perks & Benefits
This is a fully remote position, offering flexibility in work location. The role provides opportunities for career growth through ownership of complex features and collaboration across teams. Employees can expect a supportive environment with access to industry leaders and advanced tools for professional development.
Full Job Description
About Nightfall:
Nightfall is the AI-native, unified data loss prevention and insider risk management platform that protects sensitive data across SaaS apps, GenAI tools, email, endpoint devices, and more. Hundreds of customers, spanning AI innovators to top 10 banks, trust Nightfall to detect and stop data exfiltration at scale. Nightfall enables organizations to innovate freely without the risks of losing intellectual property or exposing customer data. Our agentic platform helps security teams regain their time by putting data loss prevention on autopilot. With automatic remediation, security violations can be resolved automatically before they become incidents, and end-users can be automatically trained and coached in the moment to self-heal violations that they introduce.
Nightfall is backed by leading VC firms including Bain Capital Ventures (Enrique Salem - former CEO of Symantec), Venrock (early investors in Cloudflare), WestBridge Capital, Pear VC (early investors in Dropbox and Doordash), and a cadre of cybersecurity leaders including Frederic Kerrest (founder of Okta), Maynard Webb (former COO of eBay), Ryan Carlson (President of Chainguard), Kevin Mandia (founder of Mandiant), and many others.
About the role:
As a endpoint engineer in the team you will own data exfiltration prevention on endpoints and requires background in Windows Platform. Engineers in this team own the design and development of core features on Nightfall’s Data Exfiltration platform. This requires leveraging file & device interfaces and requires in-depth understanding of Operating System internals.
Responsibilities
Designing and developing data exfiltration prevention apps, drivers, system extensions and services on Windows.
Maintaining and evolving mission-critical agents on endpoints.
Own complex features from design to delivery and troubleshoot issues from customers.
Designing and building secure software with cross-platform deliverables (Windows)
Writing and maintaining documentation about internal and public services.
Requirements
Expertise in one of the following: C/C++ on Windows.
Demonstrable expertise in developing agents on Windows.
On Windows, practical development experience with WDF (Windows Driver Frameworks), filter drivers and familiarity with user mode apps is required.
Readiness to learn other systems languages (e.g. Rust, Go, Python). Prior experience in one of these languages is a definite plus.
Experience with kernel-level debugging processes and tools. Ability to use reverse engineering techniques and debugging of kernel space code.
Ability to decompose complex business problems and own them end to end across teams.
Minimum 5+ years of related work experience.
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