Work with the world's top founders

Senior Mobile Engineer

Zubale

Zubale

Software Engineering
Posted on Mar 1, 2026

Who you are

  • A Senior Mobile Developer specialized in React Native to design, build, and scale mobile applications used by thousands of users.
  • An AI-first developer, that owns and delivers high-quality code
  • You enjoy owning end-to-end mobile experiences, moving fast, and collaborating with cross-functional teams to deliver high-quality products.
  • You play a key role in our mobile architecture, technical decision-making.
  • You work closely with Product, Design, Backend, QA Automation teams to ship high-impact features with speed, quality, and reliability.

What you will do

  • Design and implement scalable React Native features for iOS and Android.
  • Own core architectural decisions for mobile platforms, including navigation, state management, performance patterns, and code reuse.
  • Integrate with backend APIs ensuring reliability, observability, and performance.
  • Build reusable UI components and contribute to shared mobile libraries.
  • Implement automated testing (unit, integration, end-to-end)
  • Optimize application performance, memory usage, and startup times.
  • Collaborate with QA Automation to ensure high test coverage.
  • Partner with Product and Design from ideation to delivery to ensure feasibility and clarity.
  • Participate in code reviews, architecture discussions, and sprint planning.
  • Identify opportunities for technical improvements that increase speed, stability, or developer experience.
  • Drive proof-of-concepts and contribute to strategic technical roadmaps.

The skills and experience you will bring

  • Strong experience building and releasing React-Native mobile apps.
  • Strong command of JavaScript/TypeScript and mobile design patterns.
  • Experience publishing apps to the App Store and Google Play.
  • Deep knowledge of RN architecture (navigation, state management, animations).
  • Strong experience debugging, profiling, and optimizing RN apps.
  • Familiarity with CI/CD for mobile (i.e. Bitrise.)
  • Experience integrating with backend services
  • Excellent communication skills and ability to work cross-functionally.
  • Good English communication skills.
  • High adoption of AI IDEs, like Cursor
  • Studies: Bachelor's degree or equivalent experience in a quantitative field (Computer Science, Engineering)
  • Is a plus:
    • Native development experience (Swift, Objective-C, Kotlin, Java).
    • Experience with OTA updates (Expo Updates, CodePush).
    • Experience in a startup or high-growth environment.
    • Background in automated QA for mobile.
    • Experience building shared UI kits or monorepo setups
    • Experience building agentic-ai systems with Langchain or Google SDK