7f9f1e54-d6f Senior Software Engineer — Client Mobile and Desktop Apps We're looking for a Senior Software Engineer to join our Cloudflare One Client team. You will be working on the cross-platform app and lower-level implementation of our Cloudflare One Client Desktop and Mobile Apps, which protects devices by securely and privately sending traffic from those devices to Cloudflare's global network, which can apply advanced filtering and Cloudflare One policies.

In your role, you will use cross-platform frameworks along with platform-native languages & APIs to implement user-friendly apps that run on desktop and mobile platforms. You will also use Rust alongside platform-native languages and APIs to implement high-performance networking code for both our mobile and desktop apps.

You will be most successful in this role if you have a good understanding of user-interface programming, the intricacies of different platforms (mobile and desktop), experience working on multi-platform code, a decent understanding of lower-level operating system concepts (virtual memory, multi-threading, process lifecycle, etc.) and networking concepts & protocols (VPNs, TCP/IP, etc.).

As a Senior Software Engineer, you will be expected to lead the design and implementation of major development projects, working closely with our product managers, designers and other teams to implement customer-impacting features.

Responsibilities include:

  • Experience with cross-platform programming (Flutter) and good familiarity and understanding of user-interface and core OS concepts of one or more platform (iOS, Android, macOS, Windows, Linux)
  • Great experience successfully using different typed programming languages, such as Swift, Kotlin, Java, C#, as well as lower-level languages, such as Rust, C, C++.
  • Excellent programming skills, with experience writing very high-quality and low-complexity code with thorough documentation.
  • Strong experience writing easily-testable and thoroughly-tested code (e.g. using dependency injection with the right abstractions).
  • Very comfortable writing multithreaded, asynchronous code.
  • Strong experience with debugging, both at the application level and network-related problems.
  • An understanding of security concepts, such as VPNs, PKI, etc.

Compensation may be adjusted depending on work location. For Colorado based hires: Estimated annual salary of $168,000 - $206,000.

This role is eligible to participate in Cloudflare’s equity plan.

Cloudflare offers a complete package of benefits and programs to support you and your family.

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]]> full-time senior hybrid $168,000 - $206,000 cross-platform programming, Flutter, Swift, Kotlin, Java, C#, Rust, C, C++, user-interface programming, lower-level operating system concepts, networking concepts & protocols, VPNs, TCP/IP Engineering Technology Cloudflare https://logos.yubhub.co/cloudflare.com.png Cloudflare helps build a better Internet by protecting and accelerating any Internet application online without adding hardware, installing software, or changing a line of code. https://www.cloudflare.com/ https://job-boards.greenhouse.io/cloudflare/jobs/7243935?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply Hybrid 2026-04-26