• United Kingdom Jobs Expertini profile avatar

    • Senior React Developer Reactjavascript Jobs in UK

    Professional job seekers finding United Kingdom jobs through Expertini
    750,000+ professionals on Expertini 750,000+ Candidates
    Join our global community
    Explore Leading Employers
    High-Paying Careers
    Expertini Penguin Mascot Resume Score™
    Resume Score™ Instantly
    Upload Your CV
    Quick 30-second process

    Apply Today & Jumpstart Your Career on Expertini, Trusted Since 2008.

    1. Expertini
    2. United Kingdom
    3. Jobs
    4. Senior React Developer Reactjavascript Jobs in United Kingdom

    5. Download PDF

    Reset

    Create Job Alert
      Add Alert

     
     
    Create Alert
     
    Reset

    Senior PowerBI Developer Tesco Mobile

    This role sits within the central Analytics & Insight Chapter and the PowerBI & Automation Squad, focused on democratizing data across Tesco Mobile. You’ll enable stakeholders to access insights easily, understand where to source information and use it for maximum value. Working in an Agile environ ...

    Senior PowerBI Developer Tesco Mobile

    This role sits within the central Analytics & Insight Chapter and the PowerBI & Automation Squad, focused on democratizing data across Tesco Mobile. You’ll enable stakeholders to access insights easily, understand where to source information and use it for maximum value. Working in an Agile environ ...

    Senior Frontend Developer: Immersive Storytelling

    Pulse Recruit in Greater London is seeking an experienced frontend developer to create engaging web and mobile stories. The ideal candidate should have strong skills in React or Svelte, alongside experience with CSS, GSAP, and building interactive web experiences. The role entails working closely with design and ...

    Senior Developer Relations Manager Telecommunications

    Job Requisition ID JR Job Category Sales Time Type Full time We are seeking a highly technical and strategic Developer Relations Manager to join our team, with a focus on engaging developer ecosystems across the telecom domains. In this pivotal role, you will work ...

    Senior Software Developer Python ML

    Senior Software Developer (Python AI/ML) Salary: £60,291 - £70,987 (including 20% Digital, Data and Technology annual pay supplement) Pension: 28.97% of salary (RoS contribution) Annual leave: 38 days (42 days with length of service) Working Patt ...

    Senior Software Developer Python ML

    Senior Software Developer (Python AI/ML) Salary: £60,291 - £70,987 (including 20% Digital, Data and Technology annual pay supplement) Pension: 28.97% of salary (RoS contribution) Annual leave: 38 days (42 days with length of service) Working Patt ...

    Senior Architect (Design Led Developer)

    About The Role: We are working with a boutique, design-led developer who are growing their in-house architecture team and are looking for a talented Senior Architect to join their London studio. With a strong pipeline of housing-led schemes, this is an exciting opportunity to play a key ...

    Senior Architect (Design Led Developer)

    About The Role: We are working with a boutique, design-led developer who are growing their in-house architecture team and are looking for a talented Senior Architect to join their London studio. With a strong pipeline of housing-led schemes, this is an exciting opportunity to play a key ...

    Senior Architect (Design Led Developer)

    About The Role: We are working with a boutique, design-led developer who are growing their in-house architecture team and are looking for a talented Senior Architect to join their London studio. With a strong pipeline of housing-led schemes, this is an exciting opportunity to play a key ...

    Senior Architect (Design Led Developer)

    About The Role: We are working with a boutique, design-led developer who are growing their in-house architecture team and are looking for a talented Senior Architect to join their London studio. With a strong pipeline of housing-led schemes, this is an exciting opportunity to play a key ...

    Senior eTrading Developer FX eFX

    Duration contract to run until 30/12/2026 Rate up to £736 p/d Umbrellainside IR35 Clearance required NPPV3 is essential The FX eRisk IT team has formed in London to design and implement new components specifically targeted at achieving a greater share o ...

    Senior Full Stack Software Developer

    Senior Full-Stack Software Developer (React/PHP) A Software Developer is a technical role within our organisation. Alongside implementing core business solutions, they play a role in supporting technical excellence across our whole development team. Collaborating within the Microsoft ecos ...

    Senior Full Stack Headless Developer

    As a Full-Stack Headless Developer at Youwe, you will bridge design and backend systems to build seamless, user-centric applications. Working with designers, engineers, and clients, you will develop responsive front-ends and integrate them with multiple backend services via APIs. Your role is to ensure cre ...

    Senior .NET Developer (£70k + benefits)

    Great opportunity for a Senior .NET Developer to join a SaaS scale-up in Manchester. Since their inception in 2015 this company has grown from start-up to scale-up, they now employ almost 200 people and have over 50,000 clients using their software across the globe. The technology department ...

    Senior Front End Developer (27609)

    This scientific and engineering software provider is seeking senior front-end developers to help guide their transition from a desktop-based ecosystem towards a modern web-native experience. This will include strategic and architectural problem solving as well as hands-on coding. You will be working alongs ...

    Senior .NET Developer Capital Markets

    Location: London (Hybrid) | Practice Area: Technology & Engineering | Type: Permanent The Role As a Senior .NET Developer at Capco, you will design and build high-performance platforms for leading financial services institutions. You’ll bring deep engineering expertise to cloud-based, eve ...

    Senior Developer Experience Security Engineer

    About Motorway Motorway is the UK's fastest-growing used car marketplace - our award winning, online-only platform connects private car sellers with over 7,500 verified dealers nationwide, who compete to offer the best price. Founded in 2017, our technology makes the process refreshingly easy, ea ...

    Senior WordPress Backend Developer – Hybrid

    A high-performance web design agency is seeking an experienced Back End WordPress Developer to join their team in London. The role involves re-architecting client websites and creating custom WordPress plugins, ensuring high performance and user experience. Applicants should have strong knowledge in PHP and Java ...

    Senior BackEnd Developer Cyber (Contract)

    . Methods Business and Digital Technology Limited Methods is a £100M+ IT Services Consultancy who has partnered with a range of central government departments and agencies to transform the way the public sector operates in the UK. Established over 30 years ago and UK-based, we ...

    Senior Games Developer HTML5, PixiJS

    This range is provided by Harvey Nash. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range Oxford – Flexible/Remote Harvey Nash have partnered with a global business well established within the online gam ...

    Senior Front End Developer (Remote)

    Here at Fintranet , we are excited to welcome a talented and enthusiastic Senior Frontend Developer to join a fast-growing FinTech Start‑Up headquartered in the heart of global FinTech advancements, the United Kingdom. The successful candidate will help us design, develop, and maintain massive infra ...

    Senior Ruby on Rails Developer

    Direct message the job poster from KE Technology Director - Ruby Specialist at KE Technology Ruby Developer - Remote (UK-based) - Up to £85K Are you a Senior Ruby on Rails Developer looking to work on scalable, high-traffic applications in a modern, engineering-led en ...

    Senior/ Lead Mobile Applications Developer

    This is a remote role with some monthly travel to Glasgow, Scotland. Essential Duties and Responsibilities Provide technical and team leadership in the design, implementation, and testing of high-performance, high-quality video communication applications for Android and iOS operatin ...

    senior Back end Developer (Remote)

    Fintranet , we are excited to welcome a talented and enthusiastic Senior Backend Developer to join a fast‑growing FinTech Start‑Up headquartered in the heart of global FinTech advancements, the United Kingdom. The successful candidate will help us design, develop, and maintain massive infrastructure ...

    Senior Developer Relations Advocate EMEA

    About ClickHouse Recognized on the 2025 Forbes Cloud 100 list, ClickHouse is one of the most innovative and fast‑growing private cloud companies. With over 2,000 customers and ARR that has more than quadrupled over the past year, ClickHouse leads the market in real‑time analytics, data warehousin ...

    Senior ServiceNow ITSM Developer – Telecom

    A leading IT solutions provider in the United Kingdom is looking for a skilled ServiceNow Developer to oversee the implementation of the ITSM module. The ideal candidate will need a minimum of 4 years of ITSM experience with at least 3 years of ServiceNow expertise and a solid background in Web Service integrati ...

    Senior Biologics PAT Market Developer

    A global leader in life sciences is seeking a Business Development Specialist to drive commercial growth for their biologics process analytics solutions. You will engage with biopharma and CDMO stakeholders and collaborate with sales teams to expand adoption of innovative solutions. The ideal candidate has stron ...

    Senior Biologics PAT Market Developer

    A global leader in life sciences is seeking a Business Development Specialist to drive commercial growth for their advanced portfolio. You will be responsible for identifying and advancing opportunities within biopharma and CDMO sectors. The ideal candidate should possess strong bioprocess or PAT knowledge and b ...

    Senior Frontend Developer Remote £110,000

    Senior Frontend Developer - Remote - £110,000 limitless has been exclusively engaged by one of the fastest growing start-ups making waves with their innovative, first of it’s kind security platform tackling and preventing high profile breaches. Since 2020 the business has scaled hi ...

    Senior Garment Technologist / Technical Developer

    Senior Garment Technologist / Technical Developer About the Company To lead and oversee all technical development, production, and quality aspects of the Menswear Outerwear & Soft Accessories collections. Proactively identify and mitigate risks throughout the product lifecycle, ensuring all ...

    Senior Frontend Developer (Chinese Speaking)

    Senior Frontend Developer (Chinese Speaking) Eeze — Eeze Hammersmith, England, United Kingdom Eeze is a leading innovator in the iGaming industry, specialising in the design, development, and delivery of live casino games. As we expand our operations in the European market, we are c ...

    Senior Java Developer (Chinese Speaking)

    Eeze Hammersmith, England, United Kingdom Join or sign in to find your next job Join to apply for the Senior Java Developer (Chinese Speaking) role at Eeze Eeze Hammersmith, England, United Kingdom 2 days ago Be among the firs ...

    Senior Java Developer API Security

    Overview Senior Java Developer / Backend Software Engineer Cambridge / WFH to £75k Are you a backend focused Java technologist? You could be progressing your career in a senior, hands-on role at a market leading software house whose remote access product is used by hundreds o ...

    Senior Case Management Systems Developer

    Senior Case Management Systems Developer Department: IT Employment Type: Permanent - Full Time Location: Derby, UK Description To support the firm’s ambitious growth plans, we are looking for a skilled Senior S ...

    Senior Software Developer (Scala & C++)

    Digis is a European company of 200 employees. The company was founded 9 years ago and has managed to grow from a startup into a reliable partner for our clients. We took the best from the product and outsourcing company. You collaborate directly with the client's team, make business trips.... Digis isa ...

    Senior Biologics PAT Market Developer

    A leading global life sciences company seeks a Business Development Specialist in Manchester. The role focuses on driving commercial growth in biologics process analytics, supporting biopharma and CDMO customers. Candidates should have a strong background in business development and experience in life sciences, ...

    Senior SQL Server DBA/Developer

    About Us Moneyfacts Group plc is the UK’s leading provider of retail financial product data and has been pioneering financial comparison technology for over 35 years. Moneyfacts' data is used by virtually every bank and building society in the UK, the Bank of England, Financial Conduct Authority, ...

    Senior Java Developer Microservices & Leadership

    A leading consulting firm seeks a Senior Java Developer to join its Newcastle team. This hybrid role involves advocating for best development practices, supporting technical leads, and mentoring junior developers. Ideal candidates will have substantial experience with Java (versions 8 to 17) and a proven backgro ...

    Senior .NET Developer Capital Markets

    Location: London (Hybrid) | Practice Area: Technology & Engineering | Type: Permanent The Role As a Senior .NET Developer at Capco, you will design and build high-performance platforms for leading financial services institutions. You’ll bring deep engineering expertise to cloud-based, eve ...

    Senior Biologics PAT Market Developer

    A global leader in life sciences and diagnostics seeks a Business Development Specialist to drive commercial growth in biopharma. The role involves identifying opportunities, expanding adoption of process analytics solutions, and engaging with scientific stakeholders. Ideal candidates will have a strong backgrou ...

    Senior Biologics PAT Market Developer

    A leading life sciences company in Milton Keynes seeks a Business Development Specialist to drive commercial growth for their advanced process analytics portfolio. This execution-focused role involves identifying opportunities and expanding adoption of solutions within biopharma and CDMO customers. The ideal can ...

    Senior Python Backend Software Developer

    About us At Xelix, we work with some of the world’s largest companies to automate and strengthen their financial controls. Our AI solutions redefine how Accounts Payable teams operate – moving from manual processes to automated, intelligent workflows. Xelix is a fast-paced scale-up – thin ...

    Senior Back End Developer Java

    We’re a sports media network, focused on building and nurturing a portfolio of highly engaged and connected communities of sports fans and bettors to create value for our partners. We empower sports fans with real-time intelligence, premium independent content, and unique tools so they can compete ...

    Senior Biologics PAT Market Developer

    A global leader in life sciences is seeking a Business Development Specialist to drive commercial growth for their advanced biologics process analytics portfolio. This role involves engaging with scientific and operational stakeholders to identify opportunities within biopharma and CDMO accounts. Ideal candidate ...

    Senior Software/Front End Developer

    Senior Software Developer Location: Hybrid, Croydon The Company: At Amber Labs, we are a cutting-edge UK and European technology consultancy that prioritises empowering autonomy, promoting experimentation, and facilitating rapid learning to provide exceptional value to our clients. Our co ...

    BC Senior Developer/Systems manager

    BC Senior Developer/Systems manager £60,000 Pearson Carter are currently working alongside a globally recognised company which is One of the largest and most recognisable companies in the North East. This is an excellent opportunity to work with the latest BC technology, contribute to excit ...

    Senior Salesforce Developer Public Sector

    Senior Salesforce Developer - Public Sector Join to apply for the Senior Salesforce Developer - Public Sector role at IBM. At IBM CIC, we provide technical and industry expertise to a wide range of public and private sector clients in the UK. A career in IBM CIC means you’ll have the oppo ...

    ServiceNow Development Lead / Senior Developer

    London-based ServiceNow Development Lead / Senior Developer required to join an established delivery team. This is a hands-on role combining high-output development with responsibility for supporting and guiding an existing offshore development team. The role suits someone who wants to be p ...

    Senior BI Developer Power BI

    Overview Turn data into decisions. Own the BI layer end to end. We’re looking for a Senior BI Developer who lives and breathes the Power BI ecosystem — someone who can design elegant data models, build high-performance dashboards, and translate complex commercial questions into trusted, sca ...

    Senior Quantitative Developer Investment Bank

    About the job Senior Quantitative Developer Investment Bank Our client, a well-established investment bank, is looking to recruit a Senior Quantitative Developer in their London office, with hybrid working. The successful candidate will have Haskell programming experience, solid computer science know ...

    🚀 Boost Your Hiring Chances with Our AI-Powered Tool-Kit

    Stand out from thousands of applicants. Use our proven career tools to optimize your applications and land your dream job faster.

    To-Do Planner

    Organize your job search and personal tasks. All data is confidential.

    Open Planner →

    Wellbeing Center

    Access your confidential wellness report and resources to manage job search stress.

    Check Wellbeing →

    Skill Coach

    Plan your skill development with O*NET support to stay competitive in your field.

    Start Coaching →

    Outfit Helper

    Get AI-powered suggestions on what to wear for your next interview.

    Find Outfit →

    Income Tax Calculator

    Plan your finances with our calculator, updated for 2025 tax regulations.

    Calculate Tax →

    Salary Benchmark

    Get accurate, AI-supported salary trends to know your worth and negotiate better.

    Check Salaries →

    Interview Practice

    Practice for any interview with AI-enabled Q&A sessions. All data is private.

    Start Practicing →

    Interview Predictor

    Use our AI-supported tool to predict potential interview questions based on your resume.

    Predict Questions →

    Interview Practice Timer

    Use our mock interview trainer to perfect your answers under timed conditions.

    Start Timer →

    Behavioral Mastery

    Ace tricky behavioral interviews with our AI-powered practice module.

    Master Answers →

    Question Journal

    Confidentially record interview questions you were asked for future reference.

    Open Journal →

    Interview Ace

    A comprehensive tool to help you master every aspect of your interviews.

    Become an Ace →

    Q&A Logs

    Confidentially track your answers to common questions and refine them over time.

    View Logs →

    Application Planner

    Schedule and organize your job applications in one confidential planner.

    Open Planner →

    Cover Letter Tool

    Create perfect, tailored cover letters for each application with AI support.

    Generate Letter →

    Resume Score

    Get instant feedback on your resume with our NLP-supported analysis tool.

    Check My Score →

    ATS Score

    Check your resume's compatibility with Applicant Tracking Systems (ATS).

    Check ATS Score →

    Application Analyzer

    Use AI to analyze job descriptions and optimize your application materials.

    Analyze Application →

    Career Visualizer

    Confidentially plan and visualize your long-term career path and goals.

    Visualize My Career →

    Offer Genius

    Get intelligent insights and strategies to confidently negotiate job offers.

    Negotiate Offers →

    JobFlow

    Track your entire job search progress from application to offer with this intelligent tool.

    Track My Flow →

    JobSense

    Our intelligent matching engine that provides smart job recommendations.

    Get Smart Matches →

    Networking Toolkit

    Tools to build and manage your professional connections. All data is confidential.

    Build Network →

    Professional CV

    A classic, O*NET supported template for corporate and professional roles.

    Use This Template →

    Executive CV

    A premium, O*NET supported template designed for senior and C-level positions.

    Use This Template →

    Modern CV

    A fresh, stylish, O*NET supported template perfect for tech and modern industries.

    Use This Template →

    Creative CV

    A visually distinct, O*NET supported template for design and artistic roles.

    Use This Template →

    Minimalist CV

    A clean, simple, O*NET supported template that focuses purely on content.

    Use This Template →

    Europass CV

    The standard European Union recommended format for wide compatibility.

    Use This Template →

    Student CV

    An institution-recommended template perfect for internships and first jobs.

    Use This Template →

    Graduate CV

    An institution-recommended template for recent graduates entering the workforce.

    Use This Template →

    Academic CV

    The researcher-recommended format for roles in academia and research.

    Use This Template →

    Developer/IT CV

    A tech-savvy recommended template to highlight your technical skills.

    Use This Template →

    Skilled Worker CV

    A trades-recommended template to showcase hands-on skills and experience.

    Use This Template →

    Monochrome CV

    A sleek, black-and-white, O*NET supported template for a professional look.

    Use This Template →

    Art CV

    An artist-recommended template that allows your creativity to shine.

    Use This Template →

    Harvard CV

    A researcher-recommended template based on the classic Harvard format.

    Use This Template →

    Volunteer Research

    Help us improve our platform by joining our community research program.

    Join Research →

    Review Us

    Share your experience with our tools to help other job seekers.

    Share Experience →

    Register

    Create your free account to save jobs, build your profile, and track applications.

    Create Account →

    Login

    Access your dashboard, manage applications, and continue your job search.

    Access Your Account →

    Profile Builder

    Create a comprehensive professional profile that attracts recruiters and showcases your skills.

    Build Your Profile →

    View Profile

    See your public profile exactly as employers will see it. Make sure it's perfect.

    Preview Profile →

    Bookmarked Jobs

    Keep track of all your saved job opportunities in one organized place.

    View Saved Jobs →

    Your Reviews

    View and manage all the company reviews you've submitted.

    See Your Reviews →

    Following

    Manage the list of companies you follow to stay updated on their new openings.

    Manage Following →

    Find Companies

    Discover and research top employers in your country and industry.

    Discover Employers →

    Standalone CV Builder

    Use our O*NET supported CV builder to create a professional resume from scratch.

    Build Your CV →

    PDF to DOC (Beta)

    Convert your PDF resumes or documents into editable Word (DOC) format.

    Convert PDF →

    DOC to PDF (Beta)

    Create universally compatible PDF documents from your Word (DOC) files.

    Create PDF →

    General FAQ

    Find answers to common questions about our job site and platform.

    Read FAQ →

    Job Seekers FAQ

    Get help and find answers to questions specifically for job seekers.

    Get Help →

    Job Matching

    Learn about the technology and algorithms behind how we match you to jobs.

    Learn How →

    Personalized Matching

    Discover how we use your profile and activity to provide customized job suggestions.

    Learn More →

    Quick Apply

    Understand our fast application process and how to make the most of it.

    Learn More →

    Alert Frequency

    Learn how to manage your job alert settings so you get the updates you want.

    Manage Settings →

    Job Alerts Guide

    A complete guide to understanding how job alerts work and how to use them effectively.

    Read Guide →

    Resume Matching

    Learn how our system matches your resume to job requirements.

    Learn More →

    Ethical Branding

    Read our guide to building a professional and ethical personal brand.

    Read Guide →

    Candidate Visibility

    Learn how to increase your visibility to recruiters on our platform.

    Increase Visibility →

    Verified Badge

    Find out how you can get a verified badge to build trust with employers.

    Get Verified →

    AI ATS Technology

    Learn about the advanced AI and ATS technology that powers our platform.

    Learn More →

    ATS Ranking

    Understand how Applicant Tracking Systems rank you as an applicant.

    Learn More →

    Semantic Matching

    Learn how our AI-powered semantic matching goes beyond keywords.

    Learn More →

    💡 Tools that really enhance your application chances and career growth.

    Go to Your Dashboard →

      Senior React Developer Reactjavascript Jobs in United Kingdom Job Search Guide, Trends and Insights