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Mobile Application Engineer

Hyphen Connect — United Kingdom · Posted ~1 day ago

Visa Sponsored

Skills

Mobile application development React Native TypeScript iOS Android Swift Kotlin Cross-platform development UX design Release management

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Summary

Be the first dedicated mobile engineer at a rapidly scaling AI startup, owning mobile products end-to-end across iOS and Android. You will build production-grade cross-platform applications with React Native and TypeScript, work directly with field experts to create intuitive experiences, and use native Swift or Kotlin when hardware and sensor integrations require it. Global applicants are welcome, with full visa sponsorship and relocation support available for London-based relocation.

Highlights

Own the entire mobile engineering surface from discovery through release at a fast-growing AI startup. The role offers end-to-end ownership, hands-on field collaboration, cross-platform development, native iOS and Android work, and full visa sponsorship plus relocation support for candidates moving to London.

Description

About the Client We are recruiting on behalf of a fast-scaling, high-intensity AI startup backed by top-tier global venture capital funds. They build custom, AI-native software to modernize complex, real-world field operations. They are seeking their first dedicated Mobile Application Engineer to own the entire mobile surface end-to-end. We welcome global applicants, full visa sponsorship and complete relocation packages are available for candidate willing to move to London. What You'll Do End-to-End Ownership: Own mobile products from field discovery and spec to building, shipping, and release management across iOS and Android. Field-Driven Engineering: Sit directly with non-technical domain experts on-site to understand how they work and translate real-world chaos into intuitive UX. Build & Scale: Develop production-grade cross-platform apps (React Native + TypeScript) and drop into native code (Swift/Kotlin) when needed for hardware/sensor integrations. Architect for Reality: Build offline-first architectures featuring local persistence, conflict resolution, and reliable sync mechanisms for low-connectivity environments. AI Integration: Embed cutting-edge AI features (LLMs, agents, on-device/voice) into core mobile workflows. Must-Have Requirements Exceptional Engineering Pedigree: Proven track record at a top tech company, AI lab, trading firm, or fast-scaling startup. React Native & TypeScript: Strong proficiency with RN + TS (or equivalent cross-platform stacks), coupled with solid iOS/Android native fundamentals (Swift/Kotlin). Complex & Offline Workflows: Demonstrated experience building offline-first systems and complex state architectures—not just basic CRUD apps. Backend Comfort: Ability to build and consume backend services supporting complex mobile workflows (Python is a plus). Customer Proximity: Highly comfortable interacting directly with non-technical users in the field. Who Will Thrive Here (Green Flags) Founder Mindset: High agency, high ownership, low ego. You build order out of chaos. Speed & Quality: You ship fast at production grade. High Intensity: Thrives in an ambitious, hard-working startup environment. Relocation Ready: Excited to move to London to join an in-person, highly collaborative engineering team.