Senior Mobile SDK Engineer — iOS/Android Security APIs

United States Digital Space LLC; United States; Hybrid; USD 140,000 - 210,000; Full time

Benefits offered by this job

Equity plan

Health insurance

401(k) Retirement Savings Plan

Employee Stock Participation Plan

Flexible paid time off

Job summary

United States Digital Space LLC is seeking a Senior Software Engineer to join the WARP Mobile SDK team. You will define architecture and public APIs for native iOS and Android SDKs, ensuring testable foundations and ease of integration for customer engineers.

You will set standards for compatibility, diagnostics, performance, and release quality, while collaborating with product and security teams to deliver a robust developer product.

Qualifications

• Deep experience building production software for iOS or Android
• Experience designing or owning customer-distributed SDKs
• Experience with mobile platform security concepts
• Familiarity with native mobile networking stacks and HTTP APIs
• Experience diagnosing production issues across mobile, SDK, network and service boundaries
• Understanding of mobile package distribution and release practices
• Experience writing technical designs and aligning decisions across teams
• Mentoring engineers and raising technical bar
• Strong written and verbal communication skills
• Ability to operate within strict mobile performance budgets (binary size, battery, startup time)
• Bonus: familiarity with React Native and Flutter
• Bonus: C++ or Rust for high-performance modules

Responsibilities

• Define the client architecture and public APIs for native iOS and Android SDKs, with deep ecosystem expertise
• Set standards for compatibility, diagnostics, performance, and release quality across mobile platforms
• Collaborate with product and engineering partners to turn security problems into reliable developer products
• Mentor native mobile engineers and resolve complex customer integration issues
• Ensure designs and implementations meet release and quality goals

Skills

iOS/Android native development (Swift,

Tools

React Native

Flutter

Job description

United States Digital Space LLC is seeking a Senior Software Engineer to join the WARP Mobile SDK team. You will define architecture and public APIs for native iOS and Android SDKs, ensuring testable foundations and ease of integration for customer engineers.

You will set standards for compatibility, diagnostics, performance, and release quality, while collaborating with product and security teams to deliver a robust developer product.