Mobile Application Engineer

Hyphen Connect; Greater London; On-site; GBP 90,000 - 120,000; Full time

Job summary

Hyphen Connect is seeking a Mobile Engineer based in London to own the mobile product end-to-end. You will develop cross-platform apps using React Native and TypeScript, with the ability to dive into Swift/Kotlin for native enhancements.

You will work directly with field users to translate real-world processes into smooth mobile UX, and manage App Store / Google Play releases as part of the lifecycle.

Qualifications

• Strong TypeScript and React Native expertise; RN+TS preferred.
• Solid iOS/Android fundamentals; native code in Swift/Kotlin when needed.
• Backend services knowledge; Python a plus.
• Experience shipping apps at top company or fast-scaling startup.

Responsibilities

• Own mobile product end to end—from customer calls and specs to build and ship, across iOS and Android.
• Sit with users in the field to understand real-world workflows.
• Build production-grade cross-platform apps in React Native + TypeScript; drop into native when needed.

Skills

TypeScript

React Native

Swift

Kotlin

Python

Cross-platform

Job description

Our client is an AI-Native company focuses on TIC industry. They are hiring the first Mobile Engineer based in London (Onsite).

Key Responsibilities

• Own mobile product end to end — from customer calls and spec to build and ship, across iOS and Android.
• Sit with users in the field to understand how they actually work on-site and on-the-go.
• Build production-grade cross-platform apps in React Native + TypeScript; drop into native (Swift/Kotlin) when needed — camera, sensors, background tasks, secure storage.
• Maintain existing apps and build new ones; own App Store / Google Play release and update cycles.
• Design for unreliable connectivity: local persistence, offline capture, conflict resolution, reliable sync.
• Translate messy real-world field processes into clear, intuitive mobile UX.
• Integrate AI features (LLMs, agents, model-backed APIs, on-device/voice) into mobile workflows where they help.

Requirements

• Exceptional engineering pedigree (non-negotiable) — standout work at a top company, AI lab, elite trading firm, or fast-scaling startup; equally open to engineers who've built and shipped apps at strong startups. A famous logo isn't required, but it helps.
• Strong TypeScript and React Native (or equivalent cross-platform framework) — RN + TS is the preference, but exceptional engineers from other mobile stacks will be considered.
• Solid native mobile fundamentals across iOS and Android (both matter at launch), and comfortable reaching into native code (Swift/Kotlin) when the RN layer isn't enough.
• Comfortable building and consuming backend services that support complex mobile workflows (Python a plus).
• Reasons about complex workflows and offline-first constraints, not just CRUD.
• Comfortable talking directly with customers, including non-technical domain experts, in the field.