39 React Expert jobs in London

About the Company

Akkodis is a global leader in engineering, technology, and R&D, harnessing the power of connected data to drive digital transformation and innovation for a smarter, more sustainable future. As part of the Adecco Group, Akkodis combines the expertise of AKKA and Modis, with over 50,000 engineers and digital specialists across 30 countries in North America, EMEA, and APAC. Our teams bring extensive cross-sector knowledge in critical technology areas such as mobility, software services, robotics, simulations, cybersecurity, AI, and data analytics, enabling clients to tackle complex challenges in today’s rapidly evolving markets. With a comprehensive solution portfolio across four service lines—Consulting, Solutions, Talents, and Academy—Akkodis supports clients from concept through to full-scale deployment and optimisation. Our diverse offerings help organisations rethink product development, accelerate productivity, reduce time-to-market, and prepare for the future. At Akkodis, you’ll join a dynamic environment that values continuous learning and global collaboration, where you can make a meaningful impact through innovative projects that shape the future of technology.

About the Role

The Front-End React Engineer will design, develop, and deliver responsive, accessible, and high-performing web applications using React.js and modern front-end technologies. This role is instrumental in ensuring outstanding user experience, maintainability, and security across digital platforms.

Responsibilities

• Develop scalable and reusable React.js components using TypeScript.
• Translate UX/UI designs into responsive and accessible web interfaces.
• Integrate front-end applications with RESTful and GraphQL APIs.
• Implement secure authentication, session management, and data handling.
• Optimise applications for performance, accessibility, and cross-browser compatibility.
• Maintain consistent styling using frameworks such as Material UI, Bootstrap, or TailwindCSS.
• Collaborate with UX Designers, Developers, and Integration Specialists to align workflows.
• Work with Solution Architects and Cloud Engineers to deploy front-end applications in AWS or Azure environments.
• Participate in Agile ceremonies including sprint planning, stand-ups, and retrospectives.
• Conduct peer reviews and ensure adherence to front-end coding standards.
• Write and maintain unit, integration, and snapshot tests to ensure code quality.
• Collaborate with QA teams to validate accessibility and functionality compliance.
• Stay current with emerging front-end technologies and best practices.

Qualifications

• Bachelor’s degree in Computer Science, Software Engineering, or related discipline (or equivalent experience).
• Relevant certifications (e.g., React Developer, AWS/Azure Developer) are advantageous.

Required Skills

• Strong knowledge of HTML5, CSS3, JavaScript (ES6+), and responsive design.
• Understanding of state management frameworks (Redux, Zustand, or similar).
• Familiarity with CI/CD pipelines, Git, and version control workflows.
• Strong problem-solving, debugging, and optimisation skills.
• Ability to design for accessibility and usability.
• Collaborative and delivery-focused mindset with strong communication skills.

Preferred Skills

• 3+ years’ experience building front-end applications using React.js and TypeScript.
• Proven experience integrating with RESTful APIs and managing asynchronous data.
• Background in front-end delivery for cloud-hosted or enterprise-scale applications.
• Experience working within Agile delivery environments.
• Exposure to deploying applications through AWS Amplify, S3, or Azure App Services.

Frontend Developer

London - 3x Days per week on-site

3-6 Month Contract

One of our major banking clients is looking for a Front end Developer.

Must-Have Skills:

• Strong proficiency in React and JavaScript .
• Deep understanding of web accessibility standards and testing methodologies.
• Experience designing and implementing component libraries .
• Familiarity with enterprise CMS platforms .
• Demonstrated success in a Banking environment .

Please apply today with your up-to-date CV for immediate consideration.

Front-End Engineer

Location: London (Onsite, 5 days per week)

Salary & Benefits: £80,000– £120,000 + Benefits

Investigo are partnered with an innovative AI technology company. They’re on a mission to transform the way businesses leverage systems through AI-powered solutions, and they’re looking for a Front-End Engineer to help shape and deliver their cutting-edge platform.

This is an opportunity to join a VC-backed, high-growth scale-up where you’ll work alongside world-class engineers and product specialists from some of the most recognised global tech companies. You’ll be designing high-performance applications used by organisations across multiple industries, including healthcare, logistics, education, and hospitality.

The Role

• Lead the development of scalable, responsive, and high-performance user interfaces for a next-generation AI-powered platform.
• Collaborate closely with product managers, designers, and back-end engineers to deliver a seamless, intuitive user experience.
• Build and maintain a reusable component library to ensure consistency and quality across the platform.
• Contribute to frontend architecture decisions and help define technical best practices for the team.
• Optimise performance and ensure applications are reliable, maintainable, and efficient.

Skills & Experience

• Strong experience with React and TypeScript
• Experience working with component libraries (e.g. Storybook, Material UI, Chakra UI, or similar).
• Familiarity with frontend state management tools and data-fetching frameworks.
• Exposure to backend or cloud technologies (e.g. Python, AWS, databases) is highly beneficial.
• Comfortable leading large-scale frontend projects, setting coding standards, and mentoring other developers.
• Strong communication skills to collaborate effectively with designers, engineers, and stakeholders

If this sounds like your next challenge, please apply online or email me directly at

We're Hiring a Frontend Developer | Earn up to $5000/month

Location : (Remote, United States)

What You Will Be Doing

• Contribute expertise to train and refine AI systems by producing high-quality written data.
• Adopt a user-centric mindset to create natural content that reflects real-world use cases.
• Evaluate AI-generated outputs by reviewing, ranking, and critiquing reasoning and problem-solving responses.
• Participate in diverse projects depending on your skills and background.

What We’re Looking For

• Bachelor’s degree or higher (or currently enrolled).
• English speaker with strong reading, writing, and evaluation skills.
• Excellent analytical and problem-solving skills to craft complex, professional prompts.
• Strong writing ability - clear, concise, and engaging, with a focus on precision and clarity.
• Attention to detail and the ability to critically assess AI-generated content.

Compensation and Benefits

• Performance-based bonus opportunities.
• Flexible schedule and workload (5–10 hours/week, up to 40 hours).
• 100% remote role — work from anywhere in the United States.
• Free access to Model Playground: interact, experiment, and engage with leading AI models.
• Join a global network of experts contributing to the advancement of safe and reliable AI.

This is your chance to be part of the AI revolution, while working on your own schedule and getting paid well for your expertise.

Apply Now!

We're Hiring a Frontend Developer | Earn up to $5000/month

Location : (Remote, United States)

What You Will Be Doing

• Contribute expertise to train and refine AI systems by producing high-quality written data.
• Adopt a user-centric mindset to create natural content that reflects real-world use cases.
• Evaluate AI-generated outputs by reviewing, ranking, and critiquing reasoning and problem-solving responses.
• Participate in diverse projects depending on your skills and background.

What We’re Looking For

• Bachelor’s degree or higher (or currently enrolled).
• English speaker with strong reading, writing, and evaluation skills.
• Excellent analytical and problem-solving skills to craft complex, professional prompts.
• Strong writing ability - clear, concise, and engaging, with a focus on precision and clarity.
• Attention to detail and the ability to critically assess AI-generated content.

Compensation and Benefits

• Performance-based bonus opportunities.
• Flexible schedule and workload (5–10 hours/week, up to 40 hours).
• 100% remote role — work from anywhere in the United States.
• Free access to Model Playground: interact, experiment, and engage with leading AI models.
• Join a global network of experts contributing to the advancement of safe and reliable AI.

This is your chance to be part of the AI revolution, while working on your own schedule and getting paid well for your expertise.

Apply Now!

We're Hiring a Frontend Developer | Earn up to $5000/month

Location : (Remote, United States)

What You Will Be Doing

• Contribute expertise to train and refine AI systems by producing high-quality written data.
• Adopt a user-centric mindset to create natural content that reflects real-world use cases.
• Evaluate AI-generated outputs by reviewing, ranking, and critiquing reasoning and problem-solving responses.
• Participate in diverse projects depending on your skills and background.

What We’re Looking For

• Bachelor’s degree or higher (or currently enrolled).
• English speaker with strong reading, writing, and evaluation skills.
• Excellent analytical and problem-solving skills to craft complex, professional prompts.
• Strong writing ability - clear, concise, and engaging, with a focus on precision and clarity.
• Attention to detail and the ability to critically assess AI-generated content.

Compensation and Benefits

• Performance-based bonus opportunities.
• Flexible schedule and workload (5–10 hours/week, up to 40 hours).
• 100% remote role — work from anywhere in the United States.
• Free access to Model Playground: interact, experiment, and engage with leading AI models.
• Join a global network of experts contributing to the advancement of safe and reliable AI.

This is your chance to be part of the AI revolution, while working on your own schedule and getting paid well for your expertise.

Apply Now!

We have partnered with a data platform and insights provider used by leading global brands to navigate and engage virtual worlds. Our platform enables clients to measure, attribute, and identify tangible revenue opportunities in digital spaces. They are a team of approximately 40 innovators with ambitious growth plans over the next 24 months. They foster a culture of collaboration and innovation, where every idea is valued and every team member plays a pivotal role in shaping the future of digital brand experiences.

Engineering Team

Their Engineering team develops and refines the data platform that empowers clients—from major brands to emerging players—to navigate the complexities of virtual worlds. They prioritize reliability, scalability, and close collaboration to build both a great product and a great team.

Role Overview

As a Senior Frontend Engineer, you will develop and maintain user-friendly, responsive web applications. You’ll work closely with product managers, designers, and developers to implement innovative solutions that enhance user experience. This role suits someone with strong JavaScript/TypeScript and React skills, eager to grow within a dynamic team.

Key Focus Areas

Frontend Development:

Build and maintain user interfaces with responsive design and performance optimization.

Translate UI/UX wireframes into high-quality code, including updates to the design system.

Ensure seamless integration with backend services. Collaboration & Growth:

Work with cross-functional teams to deliver new features and improvements.

Participate in code reviews and team discussions.

Seek feedback and learning opportunities, embracing new technologies and methodologies. Responsibilities

Develop and optimize frontend components using JavaScript, TypeScript, and React.

Implement designs and collaborate on data visualization features.

Integrate frontend components with backend services.

Maintain high-quality code through reviews and best practices.

Stay updated with industry trends and continuously improve skills.

Education :

Bachelor’s degree in Computer Science, Engineering, or related field preferred.

Relevant experience or bootcamp graduation with a strong portfolio also considered.

Experience:

6+ years in frontend development, focusing on JavaScript, TypeScript, and React.

Familiarity with tools like Tanstack (React) Query, Zustand, and Tailwind.

Experience with charting/data visualization libraries.

Proficiency with Git and understanding of RESTful APIs.

Knowledge of cloud services (AWS, GCP) is a plus.

Skills & Competencies

Strong problem-solving and attention to UI/UX detail.

Collaborative team player.

Adaptable and eager to learn new technologies.

Effective communicator.

Interest in virtual worlds, gaming, or tech industries.

Enthusiastic about working in a high-growth environment.

Senior Front End Engineer – AI x Metaverse - React

London | £80–90k | Onsite 3 days/week

6 years + commercial experience.

An early-stage, fast-growing SaaS company is scaling its engineering team in London. Their platform provides real-time insights and performance metrics across virtual environments, and they’re already working with some of the world’s biggest brands.

Backed by $10m in Series A funding, they’re building out a high-impact product at the intersection of tech, gaming, and culture.

Why this role stands out:

• Work on AI-powered tools reshaping digital brand engagement
• Join and grow as the company scales into the Virtual Worlds space.
• Collaborate on products that bridge tech, gaming, and cultural trends

If you’re looking for meaningful, hands-on work in a fast-moving environment, this could be a great fit.

• Extensive experience in frontend web development.
• Proficiency in HTML5, CSS3, and modern JavaScript (ES6+).
• Expertise in at least one major JavaScript framework (React, Angular, Vue.js).
• Experience with responsive design and cross-browser compatibility.
• Strong understanding of UI/UX principles and design patterns.
• Familiarity with build tools, Git, and agile methodologies.
• Excellent communication and teamwork skills.