Senior/Lead Engineer (React & TypeScript)

Onroute; London; On-site; GBP 60,000 - 90,000; Full time

Job summary

A leading company is seeking a highly skilled Senior/Lead Engineer with expertise in React and TypeScript to join their dynamic team. In this full-time role, you will lead the development of cross-platform applications and take charge of technical direction while mentoring fellow engineers. This opportunity not only allows you to drive innovation but also positions you for future leadership roles in a fast-paced environment.

Qualifications

• Extensive experience with React (Next.js), React Native, and TypeScript.
• Strong ability to lead application development and deliver high-quality results.
• Proven work with backend APIs and understanding of development workflows.

Responsibilities

• Lead design, development, and maintenance of React Native and React applications.
• Drive implementation of new features and improvements.
• Mentor and provide leadership to other engineers.

Skills

React

Next.js

React Native

TypeScript

Git

CI/CD

Problem-solving

Attention to detail

Leadership

Tools

Node.js (NestJS)

Terraform

Docker

Kubernetes

Job description

We are seeking a highly skilled Senior/Lead Engineer with deep expertise in React (Next.js), React Native, and TypeScript to join our team full-time. In this role, you will take ownership of our cross-platform mobile application and broader technology ecosystem, driving both new feature development and ongoing maintenance. This is an excellent opportunity for someone eager to step into a future leadership position, shape technical direction, and make a significant impact in a fast-paced environment.

Responsibilities

• Lead the design, development, and maintenance of our React Native and React applications.
• Drive the implementation of new features and improvements across the stack.
• Collaborate with backend and product teams to deliver seamless, high-quality user experiences.
• Ensure performance, scalability, and reliability across iOS and Android platforms.
• Oversee API integrations and backend service interactions, including those built with Node.js (NestJS).
• Identify and resolve architectural and performance challenges.
• Champion best practices in code quality, testing, and maintainability.
• Mentor and provide technical leadership to other engineers.
• Contribute to the evolution of our development processes and tooling.

Requirements

• Extensive experience with React (Next.js), React Native, and TypeScript.
• Proven ability to build and deliver high-quality, cross-platform applications.
• Strong experience working with backend APIs, including those built with Node.js (NestJS).
• Strong understanding of modern development workflows, including Git and CI/CD pipelines.
• Ability to work independently, proactively, and within tight deadlines.
• Excellent problem-solving skills and attention to detail.
• Demonstrated leadership skills and a desire to take on a lead role.

Nice to Have

• Experience with PHP (especially Laravel or similar frameworks).
• Exposure to DevOps practices and tools (e.g., Terraform, Docker, Kubernetes).
• Experience working with monorepos.
• Track record of launching apps to production.
• Previous experience in smaller, fast-paced business environments.