Senior Software Engineer — Client Mobile and Desktop Apps

We’re looking for a Senior iOS Software Engineer to join our Cloudflare One Client team. You will be working on the cross-platform app of our Cloudflare One Client desktop and mobile apps that protect devices by securely and privately sending traffic from those devices to Cloudflare’s global network. These are high-performance networking apps which can apply advanced filtering and Cloudflare One policies. These apps protect both our enterprise customers and tens of millions of users at no cost around the world.

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 libraries 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 iOS user-interface (Swift) programming, the intricacies of different platforms (mobile and desktop), experience working on multi-platform code, and a decent understanding of networking concepts & protocols (VPNs, TCP/IP, etc.). You will have to interact with other languages, such as Flutter, Java, Kotlin, C#, Rust, C++, and C. You’ll be expected to improve the code quality and to build solid, testable, and well-documented foundations. 

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. You will work on stimulating problems born out of the scale of our deployment, and the stringent quality, performance, and security requirements of our product.

• Experience with iOS and/or macOS programming (Swift)
• Good familiarity and understanding of user-interface and core OS concepts of one or more platform (iOS, Android, macOS, Windows, Linux)
• Excellent programming skills, with experience writing very high-quality and low-complexity code with thorough documentation.
• Strong experience with debugging, both at the application level and network-related problems

• Experience with cross-platform programming (Flutter)
• Great experience successfully using additional different typed programming languages, such as Kotlin, Java, C#
• Knowledge of TCP/IP and Internet routing.
• An understanding of security concepts, such as VPNs, PKI, etc.
• Experience with lower-level languages, such as Rust, C, C++. We use Rust extensively, and while experience with the language isn't required a willingness to learn it is.
• Experience using AI-assisted development tools (e.g., code completion, codebase analysis, log/data exploration) in a professional setting.

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

• Flexible paid time off covering vacation and sick leave
• Leave programs, including parental, pregnancy health, medical, and bereavement leave

We’re not just a highly ambitious, large-scale technology company. We’re a highly ambitious, large-scale technology company with a soul. Fundamental to our mission to help build a better Internet is protecting the free and open Internet.

Project Galileo: Since 2014, we've equipped more than 2,400 journalism and civil society organizations in 111 countries with powerful tools to defend themselves against attacks that would otherwise censor their work, technology already used by Cloudflare’s enterprise customers--at no cost.

Athenian Project: In 2017, we created the Athenian Project to ensure that state and local governments have the highest level of protection and reliability for free, so that their constituents have access to election information and voter registration. Since the project, we've provided services to more than 425 local government election websites in 33 states.

1.1.1.1: We released 1.1.1.1 to help fix the foundation of the Internet by building a faster, more secure and privacy-centric public DNS resolver. This is available publicly for everyone to use - it is the first consumer-focused service Cloudflare has ever released. Here’s the deal - we don’t store client IP addresses never, ever. We will continue to abide by our privacy commitment and ensure that no user data is sold to advertisers or used to target consumers.

Sound like something you’d like to be a part of? We’d love to hear from you!

Please note that applicants who progress to the offer stage of the interview process may be asked to attend an in-person interview within one of the Cloudflare Offices or Cloudflare Hubs.  More details about this will be available at that stage of the interview process.

This position may require access to information protected under U.S. export control laws, including the U.S. Export Administration Regulations. Please note that any offer of employment may be conditioned on your authorization to receive software or technology controlled under these U.S. export laws without sponsorship for an export license.

Cloudflare is proud to be an equal opportunity employer.  We are committed to providing equal employment opportunity for all people and place great value in both diversity and inclusiveness.  All qualified applicants will be considered for employment without regard to their, or any other person's, perceived or actual race, color, religion, sex, gender, gender identity, gender expression, sexual orientation, national origin, ancestry, citizenship, age, physical or mental disability, medical condition, family care status, or any other basis protected by law. We are an AA/Veterans/Disabled Employer.

Cloudflare provides reasonable accommodations to qualified individuals with disabilities.  Please tell us if you require a reasonable accommodation to apply for a job. Examples of reasonable accommodations include, but are not limited to, changing the application process, providing documents in an alternate format, using a sign language interpreter, or using specialized equipment.  If you require a reasonable accommodation to apply for a job, please contact us via e-mail at hr@cloudflare.com or via mail at 101 Townsend St. San Francisco, CA 94107.