36,375+ Java React Developer Jobs in UK — Top Companies Hiring July 2026

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Senior Platform Engineer: Elevating Developer Experience

We’re looking for a Senior Platform Engineer to help design, build and evolve the internal platforms and shared engineering tools that support software delivery across AJ Bell Technology Services. This role is focused on improving Developer Experience and enabling product teams to deliver high-quality ...

Remote C# Developer with Architecture Focus

A technology firm is seeking a C# Developer focused on backend technologies and solution architecture. This role entails mentoring junior developers, engaging with clients, and ensuring successful deployment of solutions. Ideal candidates will have experience with C# .Net, Mongo, and DevOps, along with an unders ...

Senior Software Developer, Digital Preservation & Cloud

An established industry player is seeking a Senior Software Developer to enhance its Digital Preservation Programme. This role offers the chance to work within a supportive and agile team, focusing on the implementation of cutting-edge tools and systems for digital preservation. You will engage with a variety of ...

Technical Manager – North London – Residential Developer

Technical Manager – North London – Residential Developer My client is a residential developer specialising in new build developments in both traditional build and reinforced concrete schemes. We are looking for an experienced Technical Coordinator/Project Architect to join our North London office ...

Software Developer Engineer in Test (SDET)

Mr Who? MrQ - we're an awesome, award winning online casino launched in 2018. We're big on tech, big on performance and most of all - big on fun. Over the years, we have experienced explosive growth - which means we need more rock stars to join our quest for total world domination. What ...

Full Stack Rails Developer (Web & Mobile)

Experience Experience with front-end technologies such as JavaScript, HTML, and CSS. Familiarity with RESTful APIs and web services. Knowledge of database systems, particularly PostgreSQL. Experience with mobile development frameworks such as React Native or Flutter. Knowledge of cloud se ...

Senior Front end JavaScript developer sought!

Senior Front-end Developer Byte9 is seeking an experienced front‑end JavaScript developer. We are a leading agile web‑development company based in London, expanding our team to work on new projects, digital pivots, and innovative developments for our core Blaze product, now open source. < ...

Senior Front End Developer (SC Cleared)

Come join us and make a difference in the world! Discover more at Job Description As a Senior Front‑End Developer, you will help shape a high-profile UK public‑sector digital service, delivering an accessible and efficient experience for end users. Working in a project‑level, cro ...

Senior Software Engineer Backend, Developer Publications

Summary Posted: 23 Apr 2026 Weekly Hours: 35 Role Number: The documentation engineering team is responsible for creating world‑class developer tools and framework‑level support for the documentation workflows on the developer website and Xcode. We’re looking for ...

VP, AI Powered Developer Tools & Platform

A leading financial services firm in London is seeking an Engineering AI Software Engineer at the Vice President level. The role involves designing tools that improve developer experience, implementing AI-driven solutions to enhance productivity, and collaborating with teams to integrate knowledge into developme ...

Dynamics 365 CE Developer (Field S ...

Dynamics 365 CE Developer (Field Service) Rate: £450‑£500pd (Outside IR35) Location: Remote – Must be UK based. Work Type: Contract – 3 months We are supporting a globally operating organisation as they continue a significant phase of their Dynamics ...

Growth Oriented .NET Developer (Mid Level)

A technology solutions provider is seeking an Intermediate .NET Developer to join their team. The role involves working collaboratively to deliver user-centred digital solutions, managing software development pipelines, and engaging with stakeholders. Candidates should be experienced in .NET technologies and fam ...

Senior Blockchain App Developer Supply Chain

A technology company focused on blockchain is seeking a skilled Software Engineer to design and implement blockchain solutions for supply chain traceability. The successful candidate will collaborate with a dedicated team, employing their expertise in blockchain technologies and software best practices. A minimu ...

Backend Grok and xAI Rust Developer

Backend Grok and xAI Rust Developer at xAI Location: London, UKPosition Type: Full-Time About xAI At xAI, our mission is to develop artificial intelligence systems that advance humanity's understanding of the universe. We are building a world‑class team of e ...

Senior Python Developer AWS Serverless & Microservices

A fintech and AI talent acquisition agency is seeking an experienced Python developer to execute the full lifecycle of product development. The ideal candidate should have over 5 years of Python development experience, expertise in AWS Serverless, and excellent communication skills. Familiarity with containeriza ...

Cloud Applications Developer – Associate Manager Level

Job Description DXC Technology is committed to building diverse, inclusive teams. We welcome applications from all backgrounds and particularly encourage interest from women, underrepresented groups, and neurodivergent candidates. We offer reasonable adjustments throughout the hiring process and ...

Senior Python Developer – AI Training (Remote)

Python - Senior Developers - AI Training - UK About Prolific Prolific is not just another player in the AI space – we are building the biggest pool of quality human data in the world. Over 35,000 AI developers, researchers, and organizations use Prolific to gather data from paid ...

Remote Front End JavaScript Developer iGaming

A leading iGaming provider is seeking a motivated Front End / JavaScript Developer to join their team and support the development of high-quality web and mobile games. This fully remote role involves working closely with designers and project managers, developing engaging games using JavaScript. Ideal candidates ...

Systems Software Developer APIs/Back End

Systems Software Developer-APIs/Back-End About this position Reynolds and Reynolds is currently seeking candidates with prior experience of software development in .NET to work on technical and functional enhancements within its automotive dealer management platforms. This is primarily a bac ...

Senior Software Developer C and Linux

System Recruitment is hiring a Senior Software Developer C and Linux based in Lymington, Hampshire, South East, UK . This is a Contractor opportunity (£250 - £350 per day). A leading tech company specialising in data management has an immediate requirement for an expe ...

Senior Salesforce Developer Public Sector (Hybrid)

IBM is looking for an experienced Senior Salesforce Developer in Hursley to design, develop, and deliver scalable solutions on the Salesforce platform. You will lead the development of custom components, ensuring alignment with public sector standards. Ideal candidates should have extensive Salesforce ...

Senior C# Developer FX & Orchestrade Expert

A global consulting group is seeking an experienced Senior C# Developer to join their team in Greater London. This role requires deep experience in FX products and the Orchestrade trading platform. The successful candidate will be responsible for designing and developing solutions for trading and risk functions ...

Senior Python Developer: Trading & Risk Systems

N Consulting Limited is seeking a Sr Python Developer for a 6-month contract in London. The ideal candidate will have strong experience in trading and risk management systems, with 6-10 years in Python development. Responsibilities include building backend applications, data processing pipelines, and collaborati ...

Senior Earnix Developer Insurance Pricing Architect

EXL is seeking a Data Management and Analytics Developer to lead Earnix pricing solutions implementation in their Insurance business. The ideal candidate will have over 5 years of experience in insurance technology, with a strong background in Earnix systems, cloud technologies, and APIs. The position offers a c ...

Python AI Full Stack Developer (LangChain)

An innovative engineering consultancy in Greater London is seeking an experienced Python AI Developer. The ideal candidate should possess strong Python development skills and proven experience with AI agents and microservices. Responsibilities include building AI solutions, mentoring team members, and ensuring h ...

Senior Python Developer in London GroupM

Qualifications Proven experience and a passion for developing and operating data-oriented solutions Experience in AdTech technology highly desired Tools and Technologies The ideal candidate should have experience with the following tools and technologies: ...

SQL & PowerApps Developer: Automate & Build Dashboards

VetPlus is seeking a SQL & PowerApps Developer in Lytham St Annes to design and deliver business-critical applications. This full-time role requires expertise in SQL and PowerApps to streamline data input and enhance operational efficiency. The ideal candidate will have experience collaborating with stakeholders ...

Senior ServiceNow Developer – HRSD & S2P Expert

Tata Consultancy Services is seeking a Senior Developer for their ServiceNow practice. This role involves designing and maintaining solutions across ITSM, HRSD, and S2P, while collaborating with IT architects and stakeholders. You will utilize your expertise in ServiceNow to drive innovation and best practices i ...

Senior WebMethods.io Developer: Cloud Integration Expert

A prominent technology firm is looking for a seasoned developer to lead the webMethods.io cloud platform's development. You will utilize your extensive experience to manage integration projects, from API configurations to end-to-end designs. Candidates must possess at least 10 years of hands-on webmethods.io exp ...

Senior Python Developer Trading & FIX (Hybrid)

A leading technology services company is looking for a skilled Python Developer based in Greater London. The ideal candidate will have over 6 years of experience in the trading domain and expertise in the FIX protocol. Responsibilities include developing trading applications, implementing FIX protocol solutions, ...

Campus Based Senior Systems & Software Developer

North West Regional College is seeking applications for a Permanent Full-Time Senior Systems Development Officer based in the Strand Road Campus. The successful candidate will assist in developing new software systems for staff and contribute to the overall support service. This position offers a compe ...

Trading Developer High Performance Tools (Hybrid)

SmartestEnergy Business Limited is seeking skilled Trading Developers to design high-performance trading tools and automated processes. You will play a key role in building scalable solutions supporting trading activities and complex analytical workflows. Collaboration with various teams is essential, ...

Remote WordPress Developer — Build & Optimize Globally

Codeable is the only WordPress freelancer platform. We match customers to the best WordPress experts. We help customers solve any WordPress problem.Codeable connects a community of professional WordPress development experts from around the world with businesses that need a WordPress site built, developed ...

Growth Centric Display Products Business Developer

Harrison Scott Associates is seeking a Business Development Manager for Display Products based in South Yorkshire, England. The ideal candidate will have extensive experience in selling display products and will be responsible for identifying business opportunities while collaborating with various departments. S ...

Quantitative Developer – Systematic Hedge fund £400k

Overview Quantitative Developer – Systematic Hedge Fund – £400k Paragon Alpha are partnered with a top performing Quant Hedge Fund currently managing around $30b in AUM. They are looking to hire a Quant Developer to build mid-frequency trading infrastructure and a signal generation framewor ...

Quantitative Investment Strategies(QIS) Platform Developer

Overview Quantitative Investment Strategies(QIS) Platform Developer Join Barclays’ QA Equity & Hybrid Products team as a QIS Platform Developer to support the next-generation Quantitative Investment Strategies (QIS) platform. Partnering with Trading, Structuring, Strats, and Technol ...

Quant Developer: Build Scalable Trading Tools

A global technology-driven investment firm seeks a Quant Developer to bridge quantitative research and engineering. This role involves developing scalable software for data analysis, backtesting, and trading systems. Candidates should have a degree in a relevant field and 2+ years of experience with Python, C++, ...

E Courseware Developer — Remote Training Innovator

Raytheon Systems in Fareham is looking for an e-Courseware Developer to enhance Royal Navy training through innovative e-learning solutions. This role involves creating engaging content, ensuring compliance with standards, and collaborating with subject matter experts. The ideal candidate will have str ...

Remote Dynamics 365 Field Service Developer

KERV Interactive in Turves Green is seeking a talented developer experienced in Dynamics 365 CE implementation and C# development. Join our innovative team where flexibility is encouraged, allowing you to work from home, customer sites, or the office. We are proud to foster a collaborative environment ...

Shopify Web Developer for Skincare Brands

A leading skincare distribution company in Weybridge is seeking a digital marketing and web development professional to manage and enhance eight websites. The role requires expertise in Shopify, WordPress, and Magento, along with skills in digital marketing, SEO, and Google Ads. The ideal candidate should have a ...

Senior Salesforce Developer — GTM Platform & Automation

A leading consumer review platform company in London is seeking a Salesforce Specialist to develop and implement custom solutions on their Salesforce platform. The ideal candidate will have over 5 years of experience in Salesforce development, including expertise in Apex and Lightning components. This role invol ...

Senior AI Developer Tools & Platform Engineer

Arm Limited in Cambridge is looking for a software engineer to design developer-facing APIs and tools. The role involves working on AI workload solutions while ensuring high-quality developer experiences. The ideal candidate will have proficiency in programming languages like Go, Python, or Rust, and a ...

Head of Developer Experience & Platform Engineering

SoSafe, located in Greater London, is seeking an accomplished leader for their Developer Experience function. The role involves shaping internal platforms and promoting sustainable delivery practices while fostering a strong team culture. Ideal candidates will have a track record in leading engineering teams, a ...

Technical PM & Software Developer, Onsite London

A dynamic financial services SME in Central London is seeking a Technical Project Manager with over 5 years of experience in managing complex technical projects. The ideal candidate will have a strong background in software development and project management. Responsibilities include overseeing multiple projects ...

Anaplan Lead Developer & Consultant Hybrid UK

A growing EPM consultancy is seeking a Lead Developer for Anaplan in London. This hybrid role involves building client relationships, defining project scopes, and ensuring successful Anaplan rollout. Candidates should have experience in multiple implementations and a deep understanding of finance, supply chain, ...

Systems Developer Python, Django, Vue + Azure

Antares Global Management Limited is looking for a Systems Developer in London. This role focuses on supporting and enhancing the Claritas management system, which is crucial for processing and integrating data. You will work closely with business teams to deliver secure and reliable solutions. The ide ...

Microsoft D365 and Power Platform Developer

Elevate your career as a Microsoft D365 and Power Platform Developer in a stimulating hybrid environment that fosters innovation and collaboration. We are seeking a skilled professional with a strong background in MS Dynamics - CRM to excel in a permanent role. This position offers the opportunity t ...

Pixel Perfect Frontend Developer | Performance & UI

Elixirmark in Glasgow is seeking a dedicated Front-End Developer who is passionate about performance, clean code, and creating seamless animations. The role involves translating designs from Figma or Adobe XD into interactive web pages while building reusable components and optimizing for Core Web Vitals. </p ...

Developer Platform Lead: Governance, Enablement & Scale

A leading engineering services company in Birmingham is seeking a Developer Platforms Specialist within IT Services. The role involves owning governance frameworks for developer platforms, managing lifecycles, and closely collaborating with engineering teams to enhance platform strategies and tooling. Candidates ...

Senior C# Developer .Net Core AWS

Overview Senior C# Developer / Software Engineer (C# .Net Core AWS) Sunderland / WFH to £75k Do you have strong C# .Net Core backend development skills? You could be progressing your career in a senior, hands-on C# Developer role at a growing games / gambling site, whilst enjoying a range o ...

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