Senior Mobile SDK Engineer (iOS/Android)

Cloudflare; United Kingdom; Hybrid; GBP 110,000 - 140,000; Full time

Benefits offered by this job

Competitive pay with stock

Paid parental leave

Comprehensive health & life insurance

Pension plan

Flexible vacation policy

Commuter program

Wellbeing programs

Job summary

Cloudflare is seeking a Senior Software Engineer for the WARP Mobile SDK team to shape the future of our mobile security SDKs. You will define the client architecture and public APIs for native iOS and Android SDKs, drawing on deep expertise in either ecosystem.

You will mentor engineers, ensure compatibility and performance, and collaborate with product and security teams to deliver a robust, customer-focused developer product across platforms.

Qualifications

• Senior mobile SDK experience with iOS (Swift) or Android (Kotlin).
• Experience designing client APIs for native SDKs.
• Strong understanding of performance, memory, and battery considerations in mobile apps.

Responsibilities

• Define client architecture and public APIs for native iOS and Android SDKs.
• Establish foundations that are testable and well-documented for customer integrations.
• Set standards for compatibility, diagnostics, performance, and release quality across mobile platforms.
• Mentor native mobile engineers and resolve complex customer integration issues.

Skills

Swift

Kotlin

C++

Rust

Mobile architecture

Code review

Tools

React Native

Flutter

Job description

Cloudflare is seeking a Senior Software Engineer for the WARP Mobile SDK team to shape the future of our mobile security SDKs. You will define the client architecture and public APIs for native iOS and Android SDKs, drawing on deep expertise in either ecosystem.

You will mentor engineers, ensure compatibility and performance, and collaborate with product and security teams to deliver a robust, customer-focused developer product across platforms.