Mid / Senior Frontend Developer

TXM Recruit; Greater London; On-site; GBP 50,000 - 70,000; Full time

Job summary

A leading recruitment agency is seeking a Mid-Senior Front-End Developer to join a dynamic engineering team. You will build user-centric web applications using React and TypeScript, ensuring high code quality and performance. Ideal candidates have over 4 years of experience, with a strong focus on component-based architecture and mentoring junior engineers. This role offers a chance to influence front-end architecture in a fast-paced product environment.

Qualifications

• 4+ years of professional front-end development experience.
• At least 2+ years working with React in production.
• Strong proficiency in TypeScript and modern JavaScript (ES6+).
• Experience with component-based architecture and state management libraries.
• Hands-on experience with frontend testing frameworks ensuring high-quality code.

Responsibilities

• Work with a dynamic engineering team to build user-centric web applications.
• Influence front-end architecture and enforce best practices.
• Mentor junior engineers and conduct code reviews.
• Deliver responsive, performant, and accessible interfaces.

Skills

React

TypeScript

JavaScript (ES6+)

State management (Redux, Zustand, Recoil)

RESTful APIs

GraphQL

Frontend testing frameworks (Jest, React Testing Library, Cypress)

Performance optimization

Accessibility (WCAG)

Collaboration skills

Job description

Job Description

Provide are seeking a Mid-Senior Front-End Developer to join our clients' dynamic engineering team, building user-centric web applications that scale to thousands of customers. You will work primarily with React, TypeScript, and modern front-end technologies to deliver responsive, performant, and accessible interfaces. Collaborating closely with designers, backend engineers, and product managers, you’ll turn complex requirements into intuitive, polished user experiences. As a senior contributor, you will influence the front-end architecture, enforce best practices, and ensure high code quality across the team.

The ideal candidate has professional experience with React, TypeScript, and modern JavaScript frameworks, along with a strong understanding of component-based architecture, state management (e.g., Redux, Zustand, or Recoil), and front-end performance optimization. Experience with RESTful APIs, GraphQL, and testing frameworks (Jest, React Testing Library, Cypress) is highly desirable. You should be comfortable mentoring junior engineers, conducting code reviews, and helping the team adopt scalable, maintainable practices. This role offers an exciting opportunity to own the front-end experience in a fast-paced, innovative product environment.

Requirements & Qualifications

• 4+ years of professional front-end development experience, with at least 2+ years working with React in production.
• Strong proficiency in TypeScript and modern JavaScript (ES6+).
• Experience with component-based architecture, state management libraries (Redux, Zustand, Recoil, or similar), and responsive design.
• Familiarity with RESTful APIs, GraphQL, and integrating frontend applications with backend services.
• Hands-on experience with frontend testing frameworks (Jest, React Testing Library, Cypress) and ensuring high-quality, maintainable code.
• Knowledge of performance optimization, accessibility (WCAG), and cross-browser compatibility best practices.
• Strong collaboration skills, able to mentor junior engineers, conduct code reviews, and promote team-wide best practices.
• Bonus: experience in SaaS, fintech, or high-traffic web applications, and familiarity with CI/CD pipelines or frontend build tooling (Webpack, Vite, Next.js).