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

Product Driven Full Stack Engineer (TypeScript & AWS)

Deepstreamtech is seeking exceptional full-stack software engineers to join their team in Greater London. You will play a pivotal role in scaling Omnea as it moves from startup to scale-up, tackling meaningful technical problems and engaging actively with customers. The position involves end-to-end ownership of ...

VP of Engineering: Scale, Strategy & High Impact Teams

Deepstreamtech is seeking a VP of Engineering in Greater London, responsible for leading the engineering team. The ideal candidate will possess 7+ years of software engineering experience, including 3+ years in an engineering leadership role. Key responsibilities include mentoring engineers, driving technical im ...

Founding Product Engineer for AI Legal Platform, Equity

Jack & Jill is seeking a Product Engineer to join their founding team at an AI-native law firm in London. This role offers a unique opportunity to disrupt the legal services market by building sophisticated client platforms and deploying AI agents for legal document reviews. The ideal candidate has over 3 years ...

Senior Frontend Design Engineer: Craft, Systems & UI

A leading software development company in London is hiring a Design Engineer to enhance their design team. The role involves implementing quality UI from design files, evolving the frontend architecture, and maintaining a design system. Successful candidates will have solid expertise in HTML, CSS, and React, wit ...

Mobile Commercial Tyre Technician: £40k £60k + Uncapped Bonus

A leading automotive service provider in the UK is seeking an experienced Commercial Vehicle Tyre Fitter to join their team. Responsibilities include fitting and repairing a range of tyres, providing exceptional customer service, and completing necessary paperwork. Candidates must possess a REACT licence, a full ...

Engineering Manager: AI & Services Delivery Leader

A technology company is seeking an Engineering Manager to lead the AI & Services engineering team in London. The candidate will be responsible for fostering team growth, ensuring high-quality software delivery, and collaborating closely with Product and Design teams. Applicants should have a strong engineering b ...

Engineering Leader: AI, Scalable Digital Platforms

Lebara Media Services Private Ltd is seeking a Technical Leader to provide technical guidance for digital initiatives. The role involves leading cross-functional Agile teams, advocating for best practices in software development, and ensuring alignment with company goals. The ideal candidate will have over 10 ye ...

Senior Full Stack Engineer – Build Next Gen Connectivity

A leading tech recruitment firm in Greater London seeks a Full Stack Engineer to join their innovative team. In this role, you will tackle end-to-end challenges, manage product aspects, and ensure the best solutions for product development using TypeScript, React, and Node.js within an AWS environment. This posi ...

.NET Software Engineer – Hybrid, Cloud & Trading Platforms

A global market leader in financial technology is hiring mid-level .NET Software Developers in Belfast. This hybrid role involves developing and maintaining complex trading systems and cloud-native solutions. Ideal candidates will have strong experience in C# (.NET Core), knowledge of modern frontend frameworks ...

Senior Full Stack Engineer API, Cloud & AWS

A technology company in Salford is seeking a Full Stack Engineer to join their team on the award-winning Investcentre platform. The ideal candidate should have 3-4 years of experience with C#, .NET Core, and web development frameworks like Angular, React, or Vue.js. Responsibilities include designing and deliver ...

Remote AI Tech Lead — Architect & Mentor

YO IT Consulting is looking for a Technical Lead to drive innovation on an AI agent project. This remote role involves leading technical direction and fostering collaboration among cross-functional teams. Ideal candidates will have over 3 years of development experience in languages like React, Python, and Node. ...

Senior Full Stack Engineer, TechOps — Self Service & Scale

A digital energy supplier in the UK is looking for a Full Stack Software Engineer to join their TechOps Engineering team. This role involves creating innovative solutions to enhance user experiences while collaborating across various teams. Candidates should have 5+ years of software development experience, part ...

Lead Software Engineer, Frontier AI Platform (Hybrid)

A leading AI consultancy, located in Greater London, is looking for a Lead Software Engineer to scale their groundbreaking Frontier Decision Intelligence platform. The role involves driving technical contributions, designing customer-facing solutions, and collaborating with cross-functional teams. Ideal candidat ...

Senior Full Stack Engineer — APIs, Cloud & Performance

A leading investment platform company in the UK is seeking a Full Stack Engineer to join their award-winning team. You will work on the Investcentre platform, emphasizing continuous improvement and engineering excellence. The ideal candidate will have 3-4 years of experience in developing services with C#, .NET ...

Full Stack Software Engineer (Hybrid) – Defence Tech Impact

An innovative technology company in Portsmouth is seeking a Full Stack Software Engineer to help make the UK safer through software solutions. In this role, you will support the development of applications, participate in code reviews, and work with technologies like SQL, React, and NodeJS. Candidates should hav ...

Growth Optimization Lead: Subscriptions & Retention

A leading audio streaming service is seeking a Lead, User Growth Optimization in London. This role focuses on elevating the conversion optimization strategy to drive subscriptions, reduce churn, and maximize lifetime value. Responsibilities include managing A/B testing initiatives and collaborating across teams ...

Forward Deployed Full Stack AI Engineer

A leading AI technology firm is looking for a Full Stack Software Engineer (Forward Deployed) to collaborate with public sector teams in building impactful AI applications. The role involves designing architectures, mentoring staff, and ensuring scalable solutions. Ideal candidates will have a Master's or PhD in ...

Founding Engineer AI Driven Insurance Platform

A high-growth startup in London is seeking a Founding Engineer to architect and ship end-to-end systems utilizing Python, TypeScript, Django Ninja, and React. The ideal candidate will have 2–4 years of experience in high-growth environments and a strong understanding of AI workflows. You will play a pivotal role ...

National Security Tech Consultant Remote/Hybrid UK

A technology consulting firm is seeking an experienced National Security Consultant to work full-time, either remote or hybrid. The ideal candidate will have strong technical expertise and a background in consulting, with direct client interaction, coding skills in JavaScript/TypeScript/REACT, and database exper ...

Engineering Manager: Scale 1M+ Fintech App (Equity)

A leading fintech unicorn in London is seeking an Engineering Manager to lead the Zable App team, which serves over 1 million customers. This role involves balancing technical leadership with people management in a modern tech environment utilizing Kotlin and React Native. The ideal candidate will have over 5 ye ...

Frontend Engineer, Internal Tools for Data Infra

A cutting-edge AI startup in London is seeking a Frontend Engineer to build internal dashboards and applications. You will work collaboratively with researchers and engineers to create tools that enhance workflows, ensuring a high-impact development lifecycle. The ideal candidate has 1–5 years of frontend experi ...

Founding AI Engineer — Equity, LLM Platform, London

A pioneering AI startup in London is seeking a Founding AI Engineer to automate competitive intelligence in the pharmaceutical sector. You will design and implement AI systems, collaborating closely with the CTO to drive the product roadmap and develop core LLM orchestration and data pipelines. The ideal candida ...

Full Stack Engineer: Mobile & Backend (Hybrid, London)

A leading travel loyalty firm in London seeks a Full-Stack Engineer to enhance the Avios App, a global loyalty platform. This role requires strong experience in mobile and backend technologies, including React Native and .NET/C#. The engineer will work in a collaborative environment, contributing to code, solvin ...

Frontend Engineer — Data Dashboards & Retention

A leading fintech company is on the lookout for a front end engineer to join their New Ventures retention squad. You will be responsible for creating user-facing features that transform complex financial data into understandable insights for small business owners. With a focus on React and TypeScript, you'll wor ...

London Based Staff Full Stack Engineer – GenAI & LangChain

A leading software development firm is seeking a hands-on full stack engineer to join their team in London. The ideal candidate will lead teams in delivering high-quality software and must possess strong skills in TDD, agile methodologies, and various programming languages including Python and React. This role i ...

Full Stack AI Engineer for Enterprise Apps

A cutting-edge AI company in the United Kingdom is seeking an AI Engineer to build and scale AI-powered applications that transform enterprise workflows. The ideal candidate will have 2-5 years of full-stack development experience, proficiency in modern web technologies like React and Node.js, and a strong under ...

Senior Full Stack Engineer: Real Time UI & AWS Cloud

A dynamic technology firm in the UK is offering a key role in full-stack engineering focused on building secure, scalable web applications. The position requires a strong background in both frontend and backend development, with expertise in React, TypeScript, and AWS cloud services. Ideal candidates will excel ...

AI Agent Evaluation Engineer

Mindrift is offering an opportunity for experienced developers and software engineers to evaluate AI coding agents through project-based work. Contributors will create challenging tasks in simulated environments, requiring strong Python skills and an understanding of software development practices. Ideal candida ...

Software Development Manager, Digital Platforms (Hybrid/Remote)

Hunter Bond is looking for a Software Development Manager in London to deliver innovative end-to-end solutions for digital initiatives. This role involves ensuring current digital solutions meet industry standards and driving enhancements to improve scalability and operational management. The ideal candidate wil ...

Senior Web & Brand Design Engineer — Elevate AI Experiences

Lovable is looking for exceptional Design Engineers to elevate web content and user experiences. With over 10 years of experience, candidates should have a strong portfolio showcasing web interactions. Ideal candidates must be proficient in React and TypeScript, and have a strong design sense. You'll collaborate ...

AI Engineer: Autonomous Agents for Financial Modeling

A VC-backed AI startup in Greater London seeks an AI Engineer to develop sophisticated AI operating systems for financial modeling. You'll work with a team of exceptional engineers from firms like Jane Street and Bloomberg. The role involves optimizing AI agents, leading evaluation pipelines, and producing high- ...

Senior Full Stack AI Engineer: Build Production Ready AI

A leading technology company is seeking a Full Stack Engineer to join their team in Birmingham. The ideal candidate will have 5+ years of experience in software engineering and be proficient in React, TypeScript, Python, and Node or Go. This role involves building and shipping AI-driven features and requires a s ...

Associate Full Stack Engineer: AI Powered Travel UX

A leading travel technology company in Manchester is seeking an Associate Software Engineer to contribute across the full stack. This role involves building high-performance web and mobile applications using React and Kotlin, while also implementing AI-driven features. The ideal candidate has a passion for learn ...

Cloud Native Full Stack Data Engineer

A global consultancy firm in Birmingham is seeking a Full Stack Data Engineer to develop scalable data platforms and web applications. This role requires expertise in both data engineering and full stack development to deliver robust cloud-native solutions. Candidates should have a Bachelor's degree in Computer ...

Senior Frontend Engineer Alerting & Observability (Remote)

A leading open-source technology company is looking for a motivated individual to join their backend-focused team. This role involves working on alert management systems and requires experience with React, Typescript, and distributed systems. You will drive projects from ideation to operations and collaborate in ...

AI Fintech Full Stack Engineer — 4 Days/Week in London

A leading global fintech is seeking a Full-Stack Engineer for their new AI Innovation Team in Central London. You will join a greenfield team focused on building an AI Platform for compliance technology. The ideal candidate has over 2 years of engineering experience, with skills in React, TypeScript, and Python. ...

Lead AI Driven Platform Engineer (Hybrid)

Adria Solutions Ltd. is seeking an Agentic Software Engineer for a leading role in developing a new digital platform in the medtech sector. The ideal candidate will possess strong full-stack development skills in React, TypeScript, and Node.js, along with expertise in REST APIs and PostgreSQL. Responsibilities i ...

Senior Frontend Engineer – Scalable Enterprise UI

A global technology company in Greater London is looking for a Frontend Engineer to join their TechOps team. In this role, you will be responsible for developing high-quality software products, implementing features, and resolving bugs. The ideal candidate will have over 5 years of software development experienc ...

Mobile Commercial Tyre Technician – Van, Tools & Uncapped Bonus

A leading automotive service provider in Immingham seeks an experienced Commercial Vehicle Tyre Fitter to fit and repair tyres for cars, vans, trucks, and more. The role emphasizes exceptional customer service and requires the ability to work with heavy machinery outdoors. Candidates should have the necessary RE ...

Internal Tools Engineer, Safeguards Foundations

A leading AI safety firm based in London is seeking a Software Engineer to enhance internal tooling used for review and enforcement processes. The ideal candidate should have over 4 years of experience, strong knowledge of Python and React, and the ability to work closely with both technical and non-technical te ...

Customer‑Facing AI Engineer — Full‑Stack & Onsite

A high-growth AI startup is seeking a Forward Deployed Engineer in Greater London. This role involves customer-facing engineering to optimize the use of AI solutions and requires strong full-stack skills in React, TypeScript, and Node.js, along with AI/ML application development experience. The ideal candidate w ...

Full Stack AI UI/UX Engineer | Equity Options

A leading AI startup in Greater London is seeking a Full-Stack Engineer (Front-End Leaning) to innovate user interfaces for AI-assisted legal work. You will contribute to the design and development of high-performance tools, working closely with AI experts. The ideal candidate has over 5 years experience in web ...

Senior Frontend Engineer: AI UI & Data Viz

A fast-growing SaaS company in the UK is seeking a Frontend Software Engineer to join our Product Community team. You'll play a key role in creating cutting-edge user experiences on high-impact projects involving AI and data visualizations. We value strong software engineering skills and a creative mindset. If y ...

Customer‑Facing Software Engineer — Fast, Impactful Deployments

A tech startup in Greater London seeks a Forward Deployed Software Engineer. This role involves working closely with customers to develop high-impact software solutions rapidly. Ideal candidates have experience in full stack development, particularly in React/TypeScript and Kotlin. The company offers an attracti ...

In Store AI Real Time Full Stack Engineer

A stealth-mode AI company in Greater London is seeking a Full Stack Engineer to design and build transformative web experiences for in-store shopping. The role involves creating intuitive web interfaces and implementing real-time backend services. Candidates should have proficiency in full-stack development incl ...

Senior Node.js Engineer AI SaaS, Product Driven Ownership

A Northern Ireland-based SaaS company is seeking a Software Engineer (Node.js) to join their team in Belfast. The position involves developing an AI-powered platform, where you will take ownership of features from idea to delivery across both backend and frontend systems. The ideal candidate will have experience ...

Junior Java & Cloud Engineer – 24 Month Belfast Hybrid

A prominent UK-based technology firm is looking for Junior Developers and Developers for 24-month hybrid assignments in Belfast. Candidates will engage in hands-on development, working in teams with seasoned engineers on Java microservices, Kubernetes, Azure, and React Native. This opportunity is part of the Ele ...

Full Stack Engineer: AI Driven C2 & Simulation

A cutting-edge deep-tech company in the UK seeks a Full Stack Software Engineer to lead the development of their command and control platform. In this role, you will shape the system architecture and collaborate across a cross-functional team, employing your expertise in React and Node.js. The company offers hyb ...

Principal Frontend Architect DeFi & Web3 UX Lead

A pioneering technology company is seeking a Principal Frontend Engineer to lead the architectural design for their DeFi ecosystem. In this role, you'll shape product vision, define the UI framework, and drive innovation within a collaborative, cross-functional team. Ideal candidates will have extensive software ...

Mobile Tyre Technician: Roadside & Depot, Uncapped Bonus

A leading automotive service provider in West Yorkshire is seeking an experienced Vehicle Tyre Fitter. The role involves fitting and repairing tyres on cars and vans while providing exceptional customer service. The ideal candidate will have a REACT Licence and at least one year of experience in a similar role. ...

🚀 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