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Jack & Jill

Mobile Engineer

Jack & Jill
United Kingdom · Full-time · Associate

This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers.

She will pick the best candidates from Jack's network.


The next step is to speak to Jack.


Mobile Engineer


Company Description: VC-backed fintech startup


Job Description:

As a Mobile Engineer, you will lead the development of our core mobile application using React Native and Expo. You will be responsible for building high-performance financial interfaces, integrating secure APIs, and ensuring a seamless user experience for our growing customer base in a fast-paced London-based fintech environment.


Location: London, UK


Why this role is remarkable:

  • Take full ownership of a mission-critical mobile product at a fast-growing fintech company.
  • Work within a high-caliber engineering team backed by top-tier venture capital firms.
  • Direct influence on the product roadmap and technical architecture of a consumer-facing app.


What you will do:

  • Architect and build robust mobile features using React Native and the Expo ecosystem.
  • Collaborate with designers and backend engineers to deliver high-quality financial tools.
  • Optimize application performance and ensure cross-platform consistency for iOS and Android users.


The ideal candidate:

  • Proven expertise in React Native and Expo with a track record of shipping production apps.
  • Strong understanding of mobile UI/UX principles and performance optimization techniques.
  • Experience working in a fast-paced startup environment, preferably within the fintech sector.


Who are Jack & Jill?

Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.

And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.


Next steps

Step 1. Visit our website.

Step 2. Click 'Talk to Jack'.

Step 3. Talk to Jack so he can understand your experience and ambitions.

Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role.

Step 5. If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction.

Step 6. If not, Jack will find you excellent alternatives. All for free.


We never post fake jobs

This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network.

Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description.

We appreciate this can make them look a bit suspect, but there isn't much we can do about it.

Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.

Key Skills

Ranked by relevance

ai react native react android ios
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Posted
Jan 26, 2026
Type
Full-time
Level
Associate
Location
London Area

Industries

Technology Information Internet

Categories

Engineering

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