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
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.

Reset

Create Job Alert

 
   
Reset

Forward Deployed AI Full Stack Engineer (Public Sector)

A forward-thinking technology firm in the United Kingdom is seeking a Full Stack Software Engineer to develop AI applications for the public sector. You will partner with clients, developing solutions and managing infrastructure in cloud environments. Ideal candidates will have a Bachelor's degree and at least 5 ...

Frontend Tech Lead — Messaging Strategy (Remote)

HubSpot is looking for a Tech Lead II to guide a frontend team focused on marketing Email and SMS management. You will lead high-impact projects, contribute React and TypeScript code, and ensure reliability of applications. With 7+ years in frontend engineering, you will mentor engineers and collaborate closely ...

Senior JavaScript Engineer (Remote) AI Model QA & Audit

Prolific Academic Ltd is seeking a skilled individual for a remote role focused on auditing AI-generated solutions. You will be responsible for validating logic and reasoning, annotating model performance, and refining technical logic. Candidates should have a degree in Computer Science or a related field, deep ...

Remote AI Agent Tech Lead Contract

YO IT Consulting is looking for a Technical Lead to drive innovation on a cutting-edge AI agent project in a remote setting. In this role, you will guide design and development, leveraging your coding expertise in languages like React, Python, Node.js, and more. This position offers an opportunity to collaborate ...

Lead AI Software Engineer Cloud Native & Enterprise

A leading AI technology firm in the UK seeks a Software Engineer to lead the design and delivery of AI-powered applications. The role requires extensive experience with React, TypeScript, and Python, alongside cloud-native development. You will mentor engineers, collaborate closely with cross-functional teams, a ...

Lead Software Engineer Java/JS/AWS for Scalable Systems

A leading financial services firm in Glasgow seeks a Lead Software Engineer for Post Tech Technology. You will play a crucial role in an agile team, enhancing technology products and driving solutions across multiple areas. Must have hands-on experience in high-availability software, advanced skills in programmi ...

Lead Frontend Architect — Climate Tech & Geospatial Viz

A climate-tech company in Cambridge is seeking a Lead Frontend Engineer to drive the transition to a micro-frontend architecture. You will work closely with the CTO and mentor a growing team. The ideal candidate has over 4 years in React and TypeScript, experience with complex data visualizations, and a solid ar ...

Full Stack AI Engineer — Build End to End PE Insights

A leading AI firm in Greater London is looking for a full stack engineer to contribute to all layers of the application. The role involves shipping features that users care about and participating in product strategy sessions. Ideal candidates will have experience with Python, FastAPI, and React, and a passion f ...

Frontend Tech Lead II — Messaging Strategy

A leading marketing software company is seeking a Technical Lead II for its Messaging Strategy team in London. The role focuses on leading a frontend team to develop marketing email and SMS management experiences. Ideal candidates should have 7+ years of experience in frontend engineering, especially with React ...

Senior JavaScript Engineer AI Reasoning Auditor (Remote)

Prolific Academic Ltd in Glasgow is looking for a remote role suitable for candidates with a BS, MS, or PhD in Computer Science or a related field. The position pays up to $50 per hour and requires expertise in event loops, asynchronous patterns, and modern coding standards. Responsibilities include auditing AI- ...

Senior AI Software Engineer & Tech Lead

Webuild Ai is seeking a skilled Software Engineer to lead the design and development of complex AI-powered applications. This hybrid role requires expertise in React, TypeScript, and Python, alongside experience in cloud-native development. The ideal candidate will have a passion for innovation and a m ...

Senior .NET Engineer – Hybrid, Bonus & Training Budget

A leading digital transformation company in Wakefield is seeking a skilled Software Engineer to design and develop modern solutions for ecommerce platforms. The role offers a hybrid working environment, exposure to advanced technologies, and a supportive team culture. The ideal candidate will have strong experie ...

Full Stack Engineer Scale a Data Driven Insurance Platform

A leading digital insurance provider in the UK is seeking a Full-stack Engineer to drive software development on their innovative platform generating substantial revenue. You will leverage Kotlin and Python for backend and data services, while creating engaging frontend applications using React and Typescript. T ...

Lead Fullstack Engineer (Java/JS) for Cloud Native APIs

A leading bank in the UK is looking for a talented Lead Fullstack Software Engineer to join their hybrid work environment. This role will require you to lead engineering teams to design, build, and deploy scalable applications. The ideal candidate will possess strong experience in Java, with familiarity in front ...

Frontend Tech Lead — Messaging Strategy (Remote)

HubSpot is looking for a Tech Lead II to guide a frontend team focused on marketing Email and SMS management. You will lead high-impact projects, contribute React and TypeScript code, and ensure reliability of applications. With 7+ years in frontend engineering, you will mentor engineers and collaborate closely ...

Product Engineer (Equity) for AI Driven Web Experiences

Jack & Jill in London is offering an exciting opportunity for a Product Engineer. Join a founding-level team to build intelligent, real-time experiences on the web. You will ship features across a modern stack including React, TypeScript, and Node.js, while also designing AI integrations. Ideal candidates will h ...

Full Stack JS Engineer Learning Budget & Flexible Hybrid

A leading educational platform in Greater London is seeking a talented Software Engineer to enhance user experience and develop strategic initiatives. The ideal candidate has strong expertise in JavaScript, React, Node.js, and AWS, along with the ability to work collaboratively in a cross-functional squad. This ...

Staff Front End AI Engineer — Hybrid & Scalable UIs

Agoda is seeking a Staff Front-End Engineer to design and build AI-driven chat experiences that enhance our AI Assistant and customer support. The role involves architecture design, system performance, and mentoring within a collaborative team of engineers and data scientists. Ideal candidates have over 8 years ...

Remote AI Tech Lead — Architect & Mentor

YO IT Consulting is looking for a Technical Lead to guide the development of AI models in a remote setting. You will leverage your advanced coding skills in languages like React, Python, and Node.js, while leading cross-functional teams to create innovative AI solutions. This role involves mentoring team members ...

Principal AI Adoption Engineer Hybrid, Global Impact

Elanco in Hook, UK, is looking for a Principal Engineer – AI Adoption to join their Enterprise AI engineering team. The role involves defining a multi-year strategic roadmap for AI capabilities, consulting with various teams, and adopting new standards. Required qualifications include a Bachelor’s degree in Comp ...

Remote AI Agent Tech Lead Contract

YO IT Consulting is looking for a Technical Lead to drive innovation on a cutting-edge AI agent project in a remote setting. In this role, you will guide design and development, leveraging your coding expertise in languages like React, Python, Node.js, and more. This position offers an opportunity to collaborate ...

Automation Engineering Manager: AI Driven Scale

A leading fintech company is searching for an Engineering Manager to oversee automation initiatives and enhance operational efficiency across multiple departments. This hybrid role, located in the UK, involves leading a team to deliver AI-enabled solutions that improve processes and outcomes. Candidates should h ...

Senior Frontend Engineer B2B Privacy Platform

A leading internet privacy company in Greater London is seeking a talented web engineer to enhance the Account experience for B2B customers. The ideal candidate will have strong experience with React and TypeScript, along with a product mindset focusing on delivering user-centered solutions. Collaborate with a d ...

Mobile Commercial Tyre Technician – Field Service

A leading automotive service provider in Manchester is looking for an experienced Commercial Vehicle Tyre Fitter. Your responsibilities include fitting and repairing tyres for various vehicles, alongside providing exceptional customer service. The role demands industry-standard qualifications, including a REACT ...

AI Driven Full Stack Engineer (Hybrid UK)

A leading tech organization in Hook, UK, is seeking an experienced engineer to contribute to innovative AI-driven applications. Responsibilities include collaborating with diverse teams, implementing AI strategies, and ensuring efficient software delivery using CI/CD pipelines. The ideal candidate must have prov ...

Lead AI Software Engineer Cloud Native & Enterprise

A leading AI technology firm in the UK seeks a Software Engineer to lead the design and delivery of AI-powered applications. The role requires extensive experience with React, TypeScript, and Python, alongside cloud-native development. You will mentor engineers, collaborate closely with cross-functional teams, a ...

Staff Software Engineer Product Focused & Scale Driven

HackerX is seeking a product-minded software engineer with over 8 years of experience to join our engineering team in Greater London. You will drive product impact, work with a modern tech stack including Typescript, AWS, and React, and take ownership of projects from end-to-end. This role offers a unique opport ...

Remote Technical Architect for Data Platform & AI

Global Enterprise Partners is seeking a Technical Architect to lead the evolution of a pricing and promotions optimization platform for a leading CPG/FMCG brand. This role involves owning the complete architecture of a data-driven application, designing scalable solutions using GCP and modern technologies, and e ...

Hybrid Principal Engineer: Tech Strategy & Client Leadership

A UK digital consultancy is seeking a Principal Engineer to lead client and internal projects while developing technical strategies. This role involves building relationships with stakeholders, providing strategic direction, and ensuring best engineering practices. Candidates should have extensive experience in ...

Software Engineer – Build Global Tax Tech with Impact

Caribou is seeking an experienced Software Engineer in the United Kingdom to innovate and enhance its tax platform. In this role, you'll design and maintain customer-facing applications while collaborating with the tax team to drive efficiency and feature development. Candidates should have 2+ years of frontend ...

AI Software Engineer — End to End Enterprise AI, Equity

A VC-backed AI startup is seeking a Software Engineer to join a high-velocity team focused on building synthetic populations that influence critical decision-making. You'll work directly with influential founders, owning features end-to-end while applying your skills in React, Python, and collaboration. The idea ...

Software Engineer: AI Powered Fintech Platforms

A leading fintech company in the UK is looking for a Software Engineer to build and scale AI-driven platforms for financial institutions. This role involves developing cloud-native systems, event-driven microservices, and user interfaces. Candidates should have experience with Node.js, TypeScript, and React. The ...

Senior Frontend Engineer — Real Time ML UI & Performance

A tech-driven trading firm in London is seeking a Frontend Software Engineer with over 5 years of experience in React development. The role involves working on UI projects for machine learning pipelines and building scalable software solutions. This position offers a hybrid work model with an emphasis on collabo ...

Staff Software Engineer, Privacy & Data Security — Remote (Europe)

A leading security technology firm in London is seeking a Staff Software Engineer to drive technical initiatives and bolster its engineering team. You will manage large projects, design new product features, and mentor junior engineers in a rapidly scaling environment. The ideal candidate will have 10+ years of ...

Realtime Frontend Engineer for AI Driven Retail

A leading stealth-mode AI company in Greater London is searching for a Full Stack Engineer specializing in Frontend development. This role involves designing and building real-time web interfaces that personalize in-store shopping experiences. Ideal candidates will have expertise in Typescript, React, and real-t ...

Hybrid Full Stack Engineer Build Next Gen Banking Tech

A leading fintech company in London is seeking a skilled Software Engineer to design and implement modern banking solutions. You will work on the full stack, developing both backend services and frontend applications. The ideal candidate has extensive experience with React and TypeScript, alongside a passion for ...

Full Stack AI Engineer | Client Facing, UK Travel

A technology consultancy is seeking a Software Engineer (Full Stack) to join their team in London. The role requires leading client accounts and working collaboratively to deliver outstanding digital products. Candidates should have solid full-stack experience and strong skills across React, Node.js, Python, and ...

Software Engineer — Cloud‑Ready, Secure Systems

A leading IT consulting firm in the UK is seeking a Software Engineer to design, build, and deliver innovative solutions. You will work with technologies like .NET, Python, and TypeScript/React, contributing to critical projects. The role is situated in Leeds and offers an inclusive community, competitive salary ...

Staff Software Engineer – AI Driven FinTech Platform

A leading financial services platform is looking for a Staff Software Engineer to join their London team. You will work on full stack development, contributing to cloud-native applications with a focus on TypeScript and React. The role emphasizes AI integration to enhance business processes and customer experien ...

Remote Full Stack Node/Next Dev (3 Month Contract)

A dynamic technology consultancy in the UK is seeking experienced developers on a 3-month contract, with potential for extension. The role entails developing and maintaining scalable, full-stack web applications using Next.js and Node.js. Candidates should have proven experience in full-stack applications, stron ...

AI Product Engineer: Build Design to Code Experiences

A leading design platform in the UK is seeking AI Product Engineers to enhance their Dev Mode tool for collaboration between design and development teams. The ideal candidate should have over 3 years of experience in full-stack development and strong skills in React and Typescript. This role emphasizes mentorshi ...

Graduate Software Engineer: Real Work, Mentorship, Growth

A tech-driven insurtech company in Greater London is seeking a Graduate Software Engineer to join their product team. You will be involved in building real software from day one, collaborating with engineers and designers, and gaining mentorship and experience in a diverse tech stack including Java and React/Nex ...

Lead Software Engineer Java/JS/AWS for Scalable Systems

A leading financial services firm in Glasgow seeks a Lead Software Engineer for Post Tech Technology. You will play a crucial role in an agile team, enhancing technology products and driving solutions across multiple areas. Must have hands-on experience in high-availability software, advanced skills in programmi ...

Lead Software Engineer Hybrid, Mentorship & Impact

A leading technology company in Cardiff is seeking a passionate Lead Software Engineer to drive the technical design and implementation of high-performance consumer experiences. In this role, you'll mentor a team, collaborate with designers, and champion code quality. The ideal candidate has extensive experience ...

Forward Deployed AI Full Stack Engineer (Public Sector)

A forward-thinking technology firm in the United Kingdom is seeking a Full Stack Software Engineer to develop AI applications for the public sector. You will partner with clients, developing solutions and managing infrastructure in cloud environments. Ideal candidates will have a Bachelor's degree and at least 5 ...

Frontend Tech Lead II — Messaging Strategy

A leading marketing software company is seeking a Technical Lead II for its Messaging Strategy team in London. The role focuses on leading a frontend team to develop marketing email and SMS management experiences. Ideal candidates should have 7+ years of experience in frontend engineering, especially with React ...

Senior JavaScript Full Stack Engineer — Remote (EU/EST overlap)

A forward-thinking remote company seeks passionate, career-focused developers ready to collaborate with visionary enterprise clients and tackle complex challenges. The role offers full remote flexibility and emphasizes self-improvement, particularly in technologies like React and Node. Candidates must be proacti ...

Graduate Software Engineer – Profiling Tools for AI Hardware

A leading tech company in Bristol seeks a Graduate Engineer to develop profiling tools for optimizing applications on advanced hardware. The ideal candidate will have a relevant degree and experience in TypeScript and React. Responsibilities include designing features, fixing bugs, and collaborating with enginee ...

Engineering Manager — Royalty Accounting Platform

A leading global music entertainment company is seeking an Engineering Manager for its Royalty Accounting Team in London. The role involves cultivating a high-performance agile development team while managing full-stack engineers and delivering royalty accounting applications. Candidates should have over 5 years ...

Platform Integration Architect – Senior Engineer

A leading technology firm in London is hiring a Principal Engineer to enhance platform integration and architecture. This role involves auditing current systems, creating integration models, and collaborating with tech teams to improve efficiency. Ideal candidates have extensive experience in integration design, ...

🚀 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

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