Senior React Developer in London

Senior React Developer in London

London Full-Time 48000 - 72000 ÂŁ / year (est.) No home office possible
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At a Glance

  • Tasks: Lead the development of high-performance React applications and mentor junior developers.
  • Company: Join a dynamic tech firm focused on board effectiveness and societal impact.
  • Benefits: Enjoy a competitive salary, private pension, health insurance, and generous holiday allowance.
  • Why this job: Shape the future of frontend development while making a real difference in businesses.
  • Qualifications: Extensive React experience and strong mentoring skills required.
  • Other info: Be part of a fun, diverse team with excellent growth opportunities.

The predicted salary is between 48000 - 72000 ÂŁ per year.

Board Intelligence is a technology and advisory firm that supercharges boards with the science of board effectiveness. We build better businesses and benefit society. Through a suite of AI‑powered software tools, evaluation frameworks, and advisory services that distil twenty years of boardroom experience, we improve the efficiency of board processes and the effectiveness of boards. We work with over 70,000 leaders and 3,000 organisations across the world, with clients across the Fortune 500, FTSE 100, and OMX 30. In 2024 we received substantial backing from K1 Investment Management – the leading B2B Enterprise SaaS investors. We are at the beginning of significant growth, and we’re looking for superb talent to join us on this journey. As we grow, we’re protective of our culture and values. Many of us, including our founders, have families and other priorities, so we know the value of a supportive company. The team is diverse and friendly. We value fun: most days you’ll find a social event or learning opportunity to get involved with, including company socials, away days, philanthropic activities and lunch & learns.

Our Mission We unleash the potential of organisations through the science of board effectiveness, building better businesses and benefiting society.

The Role We are seeking a Senior React Developer with deep expertise in building sophisticated, high‑performance frontend applications. This role is critical to delivering exceptional user experiences and establishing frontend excellence across our product portfolio. You will be a core contributor on the frontend, mentoring developers, contributing to architectural direction, and ensuring our React applications meet the highest standards of quality, performance, and maintainability. This is a hands‑on role for someone who can drive complex frontend initiatives, make critical architectural decisions, and elevate the capabilities of the entire frontend team. In this role, you will own the development and release of challenging user interfaces – from real‑time collaborative features to AI‑powered experiences – while ensuring our codebase remains clean, testable, and scalable. You will work closely with designers, backend developers, and product managers to translate ambitious product visions into elegant technical solutions. This is a role for someone who is passionate about frontend craft, stays current with the React ecosystem, and thrives on building delightful user experiences while mentoring others. You will play a pivotal role in shaping our frontend architecture and building a culture of frontend excellence.

Main Responsibilities

  • Own the development of complex React applications with exceptional user experience.
  • Design and implement scalable frontend architectures and component libraries.
  • Establish and promote frontend best practices, patterns, and coding standards.
  • Optimise application performance, including bundle size, rendering, and runtime efficiency.
  • Build accessible, responsive, and mobile‑friendly user interfaces.
  • Mentor mid‑level and junior frontend developers, supporting their technical growth.
  • Collaborate with designers to create pixel‑perfect, intuitive interfaces.
  • Work with backend teams to design efficient API contracts and data fetching strategies.
  • Own frontend technical decisions and participate in architectural discussions.
  • Implement comprehensive testing strategies for frontend applications.

Required Skills and Experience

  • Extensive experience building production React applications.
  • Deep expertise in modern JavaScript/TypeScript and functional programming patterns.
  • Strong understanding of React fundamentals.
  • Proven experience architecting scalable frontend applications and component libraries.
  • Expertise in state management solutions (Zustand, Recoil, Redux, or similar).
  • Strong proficiency in modern CSS, CSS‑in‑JS libraries, and responsive design.
  • Experience with frontend build tools and module bundlers.
  • Comprehensive testing experience (Jest, React Testing Library, Cypress).
  • Deep understanding of web performance optimisation techniques.
  • Strong grasp of web accessibility standards (WCAG) and semantic HTML.
  • Experience with RESTful APIs and modern data fetching patterns.
  • Excellent communication skills and ability to articulate technical concepts clearly.
  • Proven track record of mentoring and elevating other developers.

Nice to Have

  • Understanding of backend technologies and API design.
  • Experience with Java backend development (Spring Boot, Spring Framework).
  • Experience with Python backend development.
  • Experience building AI‑powered user interfaces or chat experiences.
  • Knowledge of observability and monitoring tools.
  • Experience with CI/CD pipelines and Kubernetes deployments.
  • Familiarity with micro‑frontend architectures.
  • Knowledge of frontend security best practices.

Benefits

  • Private Pension Scheme
  • BUPA Health and Dental insurance (including access to the My BUPA app)
  • Group life assurance: 4x annual salary
  • 26 holiday days per calendar year in addition to

Senior React Developer in London employer: Board Intelligence Limited

Board Intelligence is an exceptional employer that prioritises a supportive and inclusive work culture, making it an ideal place for a Senior React Developer to thrive. With a commitment to employee growth through mentorship opportunities and engaging social events, the company fosters a collaborative environment where innovation flourishes. Located in a dynamic sector, Board Intelligence offers competitive benefits, including a private pension scheme and comprehensive health insurance, ensuring that employees feel valued and empowered as they contribute to meaningful projects that enhance board effectiveness globally.
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Contact Detail:

Board Intelligence Limited Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior React Developer in London

✨Tip Number 1

Network like a pro! Reach out to your connections in the tech industry, especially those who work at Board Intelligence or similar firms. A friendly chat can lead to insider info about job openings and even referrals.

✨Tip Number 2

Show off your skills! Create a portfolio showcasing your best React projects. Make sure to highlight any complex applications you've built, as this will demonstrate your expertise and passion for frontend development.

✨Tip Number 3

Prepare for interviews by brushing up on your technical knowledge and soft skills. Practice coding challenges and be ready to discuss your architectural decisions and mentoring experiences, as these are key for a Senior React Developer role.

✨Tip Number 4

Apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re genuinely interested in joining our awesome team at Board Intelligence.

We think you need these skills to ace Senior React Developer in London

React
JavaScript
TypeScript
Functional Programming
State Management (Zustand, Recoil, Redux)
CSS
CSS-in-JS Libraries
Responsive Design
Frontend Build Tools
Module Bundlers
Testing (Jest, React Testing Library, Cypress)
Web Performance Optimisation
Web Accessibility Standards (WCAG)
RESTful APIs
Communication Skills

Some tips for your application 🫡

Tailor Your Application: Make sure to customise your CV and cover letter for the Senior React Developer role. Highlight your experience with React and any relevant projects that showcase your skills in building high-performance frontend applications.

Show Off Your Passion: We love seeing candidates who are genuinely passionate about frontend development. Share any personal projects, contributions to open source, or even blog posts that demonstrate your enthusiasm for React and frontend technologies.

Be Clear and Concise: When writing your application, keep it clear and to the point. Use bullet points where possible to make your achievements stand out, and ensure your technical skills are easy to spot. We want to see what you can bring to the table!

Apply Through Our Website: Don’t forget to apply through our website! It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it shows you’re keen on joining our team at Board Intelligence!

How to prepare for a job interview at Board Intelligence Limited

✨Know Your React Inside Out

Make sure you brush up on your React fundamentals and be ready to discuss your experience with building production applications. Be prepared to explain your architectural decisions and how you've optimised performance in past projects.

✨Showcase Your Mentoring Skills

Since this role involves mentoring mid-level and junior developers, think of examples where you've successfully guided others. Share specific instances where your mentorship led to improved team performance or individual growth.

✨Demonstrate Your Problem-Solving Abilities

Be ready to tackle some technical challenges during the interview. Practice coding problems related to frontend development and be prepared to discuss your thought process and how you approach complex issues.

✨Align with Their Values

Research Board Intelligence's culture and values. During the interview, express how your personal values align with theirs, especially regarding work-life balance and a supportive environment. This will show that you're not just a fit for the role, but also for the company culture.

Senior React Developer in London
Board Intelligence Limited
Location: London
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