Senior Frontend Engineer

Braintrust; United Kingdom; On-site; GBP 60,000 - 120,000; Full time

Job summary

A leading technology company is seeking a Lead/Senior Frontend Software Engineer to enhance user-facing applications with a robust focus on performance, scalability, and user experience. In this pivotal role within a multi-disciplinary team, you will leverage your expertise in modern frameworks to deliver high-quality web solutions and mentor the next generation of developers.

Qualifications

• 5+ years of experience in frontend application development.
• Expertise in JavaScript, TypeScript, and React frameworks.
• Solid understanding of responsive design and accessibility standards.

Responsibilities

• Architect and develop advanced frontend features primarily using React.
• Mentor junior engineers and promote frontend engineering culture.
• Optimize applications for performance, scalability, and accessibility.

Skills

JavaScript

TypeScript

React

Micro-Frontend

CSS3

HTML5

Git

Agile

Education

Bachelor's degree in Computer Science or related field

Tools

Webpack

Vite

Jest

Cypress

Job description

Get AI-powered advice on this job and more exclusive features.

Job Description

We are looking for a Lead/Senior Frontend Software Engineer to join our cross-functional product team. You will play a pivotal role in designing, developing, and optimizing user-facing applications that are performant, scalable, and intuitive. You’ll work closely with product managers, designers, and backend engineers to bring seamless experiences to life.

Key Responsibilities

• Architect, develop, and maintain advanced frontend features using modern frameworks, primarily React.
• Build modular, reusable components and libraries to accelerate development across teams.
• Translate UX/UI design wireframes into high-quality, responsive web applications.
• Optimize applications for maximum speed, accessibility, and scalability.
• Ensure code quality through code reviews, automated testing, and adherence to best practices.
• Mentor junior engineers and support the frontend engineering culture.
• Collaborate with cross-functional teams (design, product, backend, and data) to deliver well-integrated solutions.
• Stay current with industry trends and emerging technologies.
  
  

Requirements

• 5+ years of professional experience building and maintaining modern frontend applications.
• Expert-level proficiency in JavaScript, TypeScript, React, and modern frontend build tools (e.g., Webpack, Vite).
• Hands-on experience designing and implementing Micro-Frontend architectures, including communication and integration between independent modules.
• Deep understanding of HTML5, CSS3, responsive design principles, and accessibility (WCAG).
• Experience with CSS-in-JS solutions, preprocessors like Sass, or utility-first frameworks like Tailwind CSS.
• Solid understanding of cross-browser compatibility issues and solutions.
• Experience working with RESTful and/or GraphQL APIs.
• Proficient with version control systems such as Git (GitLab, GitHub).
• Familiarity with Agile development methodologies, CI/CD pipelines, and automated testing (e.g., Jest, Testing Library, Cypress).
• Excellent communication skills, a collaborative mindset, and a strong sense of ownership.
  
  

Bonus Qualifications

• Experience in full-stack development, including SSR (e.g., Next.js) or backend Node.js services.
• Exposure to design systems and component libraries (e.g., Storybook).
• Understanding of UX research or design thinking methodologies.
• Interest or experience in Conversational UI/Voice interfaces.
• Experience in performance monitoring and web analytics.
  
  

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Engineering and Information Technology

• Industries

  Technology, Information and Internet

Referrals increase your chances of interviewing at Braintrust by 2x

Get notified about new Senior Frontend Developer jobs in United Kingdom.

Manchester, England, United Kingdom 6 days ago

London, England, United Kingdom 1 month ago

London, England, United Kingdom 4 months ago

London, England, United Kingdom 4 days ago

London, England, United Kingdom 3 weeks ago

London, England, United Kingdom 7 months ago

Senior Frontend Engineer | FinTech/DeFi | Up to £120,000 p/a + Bonus + Liquid Equity

Senior Frontend Engineer (Remote - Anywhere)

Full-Stack Senior Engineer (Front-End Leaning)

London, England, United Kingdom 6 days ago

We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.