Software Engineer – Mobile SDK

Cloudflare

. Define client architecture and public APIs for native iOS and Android SDKs .

Posted 10/2/2026full-timeAustin • Texas • United StatesMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates deep experience in building production software for iOS with Swift and Android with Kotlin, focusing on designing customer-distributed SDKs and ensuring mobile platform security. Proven ability to mentor engineers and resolve complex integration issues while adhering to strict performance budgets.

Highest-signal resume keywords

IOS Development With SwiftAndroid Development With KotlinMobile Platform Security ConceptsCustomer-Distributed SDK DesignMentoring Native Mobile Engineers

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Production Software DevelopmentTechnical Design WritingMobile Package DistributionDependency ManagementApplication SigningSecure Key StorageHTTP APIsIntegration ChallengesPerformance Budget ManagementSafe Diagnostics Design

Soft Skills

MentoringKnowledge SharingCollaboration

Industry Keywords

Mobile PlatformsDeveloper-Facing ProductsApplication IntegritySecure CommunicationsBinary Compatibility

Tech Stack

Tools & technologies

AndroidiOSKotlinSwift

About the role

Key responsibilities & impact

Define client architecture and public APIs for native iOS and Android SDKs
Establish testable, well-documented, lightweight foundations that customer engineering teams can integrate and operate
Set standards for compatibility, diagnostics, performance, and release quality across mobile platforms
Work with product and engineering partners to turn security problems into dependable developer products
Mentor native mobile engineers
Resolve complex customer integration issues
Carry distributed software from design through production operation

Requirements

What you’ll need

Deep experience building production software for either iOS with Swift or Android with Kotlin, and enough familiarity with the other ecosystem to guide shared architectural decisions
Experience designing or owning customer-distributed SDKs, libraries, or similarly constrained developer-facing products
Experience with mobile platform security concepts, including app and device integrity, secure key storage, application signing, authentication, and secure communications
Familiarity with native mobile networking stacks, HTTP APIs, and integration challenges across application architectures and networking libraries
Experience diagnosing production issues across application, SDK, network, and service boundaries while designing safe diagnostics that do not expose sensitive data
Understanding of mobile package distribution, source and binary compatibility, dependency management, and reliable release practices
Experience writing technical designs and aligning decisions across product, client, backend, edge, and security teams
Experience mentoring engineers through design review, code review, and knowledge sharing
Proven ability to operate within strict mobile performance budgets, including binary size, battery use, startup time, and main-thread overhead
Applicants progressing to the offer stage may be asked to attend an in-person interview within a Cloudflare office or hub
Offer may be conditioned on authorization to receive software or technology controlled under U.S. export laws without sponsorship for an export license

Benefits

Comp & perks

Equity plan eligibility
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
Short and Long Term Disability Insurance
Life & Accident Insurance
401(k) Retirement Savings Plan
Employee Stock Participation Plan
Flexible paid time off covering vacation and sick leave
Leave programs, including parental, pregnancy health, medical, and bereavement leave