Mobile Application Engineer

Seamflow; Greater London; On-site; GBP 60,000 - 80,000; Full time

Benefits offered by this job

Visa sponsorship

Relocation support

Meals and tools provided

Job summary

Seamflow in London is seeking a Mobile Application Engineer who will ship production apps from day one, taking ownership from definition through deployment. You will work on intuitive mobile workflows and integrate AI features, ensuring high standards in your deliverables.

The ideal candidate has solid experience with React Native and TypeScript, and a design mindset for challenging environments. Seamflow offers full relocation support, making it easy to join their tight-knit team dedicated to excellence.

Qualifications

• Experience building mobile applications in a fast‑moving environment.
• Strong ability to translate field processes into intuitive mobile workflows.
• Comfortable building production‑grade cross‑platform apps with React Native and TypeScript.

Responsibilities

• Ship from Day 1 – Deploy to production immediately and own real product surface area.
• Own the end-to-end delivery – Run customer calls, write specs, build and ship.
• Solve real problems – From UX polish to backend logic and customer calls.

Skills

Mobile application development

React Native

TypeScript

UX design

AI integration

Job description

Role

Mobile Application Engineer

Responsibilities

• Ship from Day 1 – Deploy to production immediately and own real product surface area.
• Own the end-to-end delivery – Run customer calls, write specs, build and ship.
• Solve real problems – From UX polish to backend logic and customer calls.

Qualifications

• Experience building mobile applications in a fast‑moving environment.
• Strong ability to translate field processes into intuitive mobile workflows.
• Comfortable building production‑grade cross‑platform apps with React Native and TypeScript.
• Willingness to drop into native code (Swift/Kotlin) for camera, sensors, background tasks, and secure storage.
• Design mindset for unreliable connectivity – local persistence, offline capture, conflict resolution, and reliable sync.
• Experience integrating AI‑powered features (LLMs, agents, model‑backed APIs) into mobile workflows.
• Product judgment – Opinionated about what to build, what not to build, and when to ship.
• High ownership – Build fast, ship production‑grade apps.

Technical Requirements

• Strong experience with TypeScript and React Native (or equivalent cross‑platform framework).
• Solid understanding of native mobile fundamentals on iOS and Android, and comfort reaching into native code when needed.
• Experience shipping and maintaining apps through the App Store and Google Play, including release and update cycles.
• Comfortable building and consuming backend services (Python a plus) that support complex mobile workflows.
• Experience integrating AI systems (LLMs, agents, model‑backed APIs) into production products.
• Ability to reason about complex workflows and offline‑first constraints, not just CRUD.
• Comfort talking directly with customers, including non‑technical domain experts.

Preferred Experience

• Founder or ex‑founder experience.
• Early‑stage or stealth startup background.
• Founder fellowships or similar environments (EF, YC, Antler, etc.).
• Experience as a forward‑deployed/solutions engineer (Palantir, Ramp, Scale, etc.).
• Experience building AI‑powered products in production.
• Experience working where requirements were unclear and evolving.

First Month

• Ship to production from day one.
• Own problems end‑to‑end, from definition to deployment.
• Do what needs doing, including UX polish, debugging, and customer interaction.

Benefits

• Pace and purpose – In‑person in London (visa sponsorship available).
• No friction – Relocation, visas, meals, and tools fully covered.
• A tight‑knit team – High standards, high trust, no politics.