SENIOR REACT NATIVE ENGINEER

La Fosse Associates; City Of London; Remote; GBP 60,000 - 80,000; Full time

Job summary

A leading tech company is seeking a founding native mobile engineer to define the technical direction for mobile product development. In this remote role, you will leverage your React Native expertise to lead architecture and development for a new mobile-first product ecosystem, collaborating across teams to innovate user experiences on iOS and Android.

Qualifications

• Proven experience as a Full Stack Mobile Software Engineer with expertise in React Native.
• Strong understanding of mobile app architecture and state management.
• Experience with responsive UI design and cross-platform integration.

Responsibilities

• Own high-impact changes through the complete software development lifecycle.
• Design, build and ship new features for native mobile apps.
• Collaborate across functions to understand user problems and co-author the product vision.

Skills

Mobile app architecture

React Native

JavaScript/TypeScript

Excellent communication skills

AI-assisted development tools

Tools

Node.js

REST/GraphQL APIs

Azure/GCP/AWS

Job description

REMOTE WORK – ASAP START

Purpose:

In this exciting remote role, you will operate as our founding native mobile engineer. You will bring significant mobile experience and act as the technical pioneer for native mobile development within the company. You will:

• Set the technical direction for how we build native mobile products.
• Establish best practices, workflows, standards and frameworks for mobile engineering.
• Lead the architecture and development of our new mobile‑first product ecosystem using React Native.
• Bring deep experience from having taken mobile apps from MVP to scaled, high‑quality products in a startup or scale‑up environment.

You’ll collaborate across product, design, and data teams, working as part of our lean full‑stack engineering team to deliver our first mobile app. While you will be our go‑to mobile expert, you will have strong engineering teammates collaborating with you to ship high‑quality features at pace. Alongside mobile‑first work, you will also contribute to maintaining and enhancing our existing web services and platform (React, Node, SQL/NoSQL).

You’ll work in an AI‑augmented development environment (Cursor IDE and other AI tooling) and play a core role in evolving our engineering culture as we build our next‑generation financial wellbeing platform.

What you’ll do:

• Own high‑impact changes through the complete software development lifecycle, from conception, design, development, testing and deployment into the hands of our users.
• Collaborate across functions to understand user problems and co‑author the product vision.
• Design, build and ship new features for our native mobile apps (React Native) delivering exceptional user experiences on iOS and Android.
• Maintain and evolve our existing React web platform, ensuring seamless integration across mobile and web ecosystems.
• Collaborate in an AI‑assisted engineering workflow, using Cursor IDE and AI copilots to accelerate delivery, enhance quality and embed intelligent features.
• Work across the full stack (React Native, React, Node.js, SQL/NoSQL and cloud services) to deliver robust, scalable and secure systems.
• Partner with UX/UI and Product teams to create elegant, accessible and consistent user experiences across devices.
• Participate in code reviews, architecture discussions and agile ceremonies, bringing thoughtful technical insight and openness to peer feedback.
• Contribute to defining modern engineering standards including CI/CD, automated testing and performance optimisation.
• Prototype and help implement AI‑driven features (e.g. personalised insights, chat assistants, recommendation systems) in collaboration with our AI and data teams.

Qualifications:

• Proven experience as a Full Stack Mobile Software Engineer with expertise in React Native and modern JavaScript/TypeScript.
• Strong understanding of mobile app architecture, state management, analytics, and deployment to the Apple and Google app stores.
• Experience with React (web), Node.js, REST/GraphQL APIs and scalable cloud platforms (Azure, GCP or AWS).
• Familiarity with AI‑assisted development tools and enthusiasm for working in an AI‑augmented process.
• Experience with responsive UI design and cross‑platform integration.
• Excellent communication skills and attention to detail in a remote, cross‑functional agile team.
• Familiarity with databases (e.g. Spanner, Postgres, SQL Server, SQL, NoSQL) and API and UI design.
• Knowledge of CI/CD tools and processes.
• Ability to collaborate well in a team, self‑driven and eager to learn new skills and technologies.
• Commitment to continuing professional development and staying up to date with relevant journals, networking meetings and courses.