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Cloudflare

Senior Software Engineer, Zero Trust Client

Cloudflare
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hybrid senior full-time $185,000 - $254,000 Austin

First indexed 22 Sept 2026

Description

Job Description

We're looking for a Senior Windows Software Engineer to join our Zero Trust team. You will be working on the Zero Trust desktop client, which protects corporate devices by securely and privately sending traffic from those devices to Cloudflare's global network, applying advanced web filtering and Zero Trust policies.

Responsibilities

In your role, you will predominantly use Rust along with platform-native languages and APIs to implement high-performance networking code that runs on multiple desktop platforms. You'll focus on improving code quality and building solid, testable, and well-documented foundations. Success in this role requires a good understanding of Windows internals and networking protocols. You will also interact with other languages, such as Swift, C#, C, and Python.

As a Senior Software Engineer, you will make significant contributions to the design and implementation of major development projects. You will work closely with product managers and other teams to implement customer-impacting features, addressing stimulating problems born out of the scale of our deployment and stringent quality, performance, and security requirements.

Requirements

  • In-depth knowledge of Windows internals, kernel-mode programming, and network protocols
  • Experience in low-level Windows driver development, ideally network drivers
  • Excellent programming skills, with experience writing high-quality and low-complexity code with thorough documentation
  • Strong experience writing easily-testable and thoroughly-tested code
  • Great experience using lower-level languages, such as Rust, C, C++
  • Comfortable writing multithreaded, asynchronous code
  • Strong experience with debugging network-related problems
  • Understanding of how VPN technologies work and the trade-offs between privacy, security, and anonymity
  • Good understanding of and experience with security protocols and standards

Benefits

Cloudflare offers a complete package of benefits and programs to support you and your family, including:

  • Health & Welfare Benefits: Medical/Rx Insurance, Dental Insurance, Vision Insurance, Flexible Spending Accounts, Commuter Spending Accounts, Fertility & Family Forming Benefits, On-demand mental health support and Employee Assistance Program, Global Travel Medical Insurance
  • Financial Benefits: Short and Long Term Disability Insurance, Life & Accident Insurance, 401(k) Retirement Savings Plan, Employee Stock Participation Plan
  • Time Off: Flexible paid time off covering vacation and sick leave, Leave programs, including parental, pregnancy health, medical, and bereavement leave
This listing is enriched and indexed by YubHub. To apply, use the employer's original posting: https://job-boards.greenhouse.io/cloudflare/jobs/8204256