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

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Sr. Product Marketing Manager Developer Ecosystem

Sr. Product Marketing Manager - Developer Ecosystem Smartsheet 29 July 2025 For over 20 years, Smartsheet has helped people and teams achieve–well, anything. From seamless work management to smart, scalable solutions, we’ve always worked with flow. We’re building tools that empower teams ...

Weapon Systems Algorithm Developer (Hybrid, Flexible)

A leading defence organisation in Bristol is seeking an Algorithm Developer to join their Weapon Systems team. This role involves designing and testing mathematical algorithms using Matlab/Simulink and Python, collaborating with various departments, and enhancing the development process. The ideal candidate will ...

Python Developer Audio and Signal Processing

Python Developer - Audio and Signal Processing Join to apply for the Python Developer - Audio and Signal Processing role at Ipsos in the UK Ipsos CrossMedia is at a pivotal and exciting stage of growth, and we are looking for a motivated Senior Python Developer with very s ...

Tech Lead (SQL Developer / SQL Engineer)

Tech Lead (SQL Developer / SQL Engineer) 6 Month FTC Leeds (Hybrid: 2 Days Onsite) Salary flexible depending on experience We’re working exclusively with a growing IT consultancy who are delivering projects for leading UK and global Financial Services and FinTech fir ...

.NET Developer – Remote/Edinburgh (Azure, Microservices)

A technology-driven fashion solutions company in Edinburgh is seeking a .NET Developer to work on a new subscription service aimed at enhancing the way customers shop for clothes. The ideal candidate will have extensive knowledge of .NET, C#, Azure SQL, and related technologies. This position allows for remote w ...

Hybrid .NET Developer for AI Projects

Hastings Direct is seeking a passionate .NET Developer to design, build, and maintain modern .NET applications focused on enhancing our AI capabilities. This role is key within our Technology Engineering team, where you'll deliver scalable solutions and work on exciting projects that improve customer engageme ...

Graduate Solutions Developer Aviation Tech & Analytics

Jet2.com Limited is seeking a Graduate Solutions Developer to join its Engineering Technologies team at Leeds Bradford Airport. This role involves delivering innovative data and analytics solutions while supporting predictive maintenance and digital transformation. Ideal candidates should possess a STE ...

BPM Developer (Metastorm) | Hybrid London Contract

Adecco is seeking a BPM Developer for a 6-month contract in London. This role involves designing applications and workflows using Opentext MBPM, collaborating with database administrators, and supporting software deployments. The ideal candidate has experience in BPM technology and proficiency in MS .N ...

SQL Developer & DBA — Mobile Apps (Remote)

A tech solution provider in the UK is seeking a DBA/SQL Developer to join their multi-skilled team. The role involves developing and tuning SQL scripts, database design discussions, and ensuring high availability of DBMS. Candidates with experience in SQL development, Linux, and database performance tuning will ...

Software Engineer Infrastructure,SWE Developer Foundations

Summary The SWE Developer Foundations organisation builds technologies and tools to help software engineers at Apple to do the best work of their lives. Our team supports that mission by building innovative infrastructure and tools to provide engineers with capabilities to quickly and efficiently ...

Blockchain Developer: Build DApps & Secure Contracts

A leading technology firm in the United Kingdom is seeking a skilled Blockchain Developer to design and implement innovative blockchain solutions. You will develop smart contracts, collaborate with teams on integrating blockchain features, and ensure security through thorough testing. The ideal candidate has exp ...

Senior Salesforce Developer & Technical Lead (Remote)

An established industry player in consulting seeks a Senior Salesforce Developer and Technical Lead to join their dynamic team. This role offers the opportunity to work on transformative projects within the fintech and insurance sectors, leveraging your expertise in Salesforce technologies such as Apex, LWC, and ...

Microsoft Dynamics 365 Developer, Power Pages

About Scrumconnect Consulting Scrumconnect Consulting is a UK national SME award-winning software development consultancy with over 300 consultants across the UK. We work with UK Public Sector clients to build impactful, award-winning digital services that improve millions of lives. Job ...

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 ...

Platform Engineer: Build & Scale Developer Platform

A diversified trading firm in Greater London seeks an individual with extensive experience in CI/CD systems and software development to enhance the developer experience. The role focuses on implementing and maintaining tooling for development teams and requires proficiency in Python or similar languages, as well ...

Senior Software Developer Market Making Technology

Role Summary As a Market Making Senior Software Developer, you will collaborate closely with business stakeholders and engineering teams to design, develop, and maintain products that enhance Marex’s market‑making capabilities and operational efficiency across multiple asset classes and geographi ...

VB.NET Developer for Global Payments Platform

Java Script Works in Greater London is seeking to hire a team of six individuals with expertise in vb.net to contribute to the development of a high-demand payment gateway platform. Candidates should have experience with frontend technologies like HTML5, Javascript, angular.js, and CSS3, while also gaining backe ...

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, ...

Research Developer: Build & Optimize Systematic Trading

A leading Hedge Fund in Oxford seeks a Research Developer to collaborate with researchers on systematic trading strategies. The role involves implementing and monitoring models and supporting trade executions. Candidates should have an advanced degree in a quantitative field and a strong interest in financial ma ...

Financial Planning Systems Developer (Pigment/Anaplan)

A recruitment firm based in Greater Leeds is seeking a Pigment Developer to join a Financial Planning team. This role involves designing and maintaining financial planning models in Pigment, collaborating with Finance teams, and enhancing forecasting processes. Candidates should have 2+ years of experience in Pi ...

Senior Exploit Developer — Remote Initial Access

VulnCheck is seeking a Senior Exploit Developer in Cheltenham, UK, to join their Initial Access Intelligence team. The role requires expertise in reverse engineering and exploit development. You'll be responsible for writing software exploits, implementing detection rules, and conducting research on vulnerabilit ...

Senior Salesforce Developer Transform Student Experience

A global education technology company is seeking a Senior Salesforce Developer to enhance and maintain the Salesforce platform. This role involves collaborating with internal stakeholders to deliver ongoing improvements and ensure optimal functionality. Candidates should have extensive CRM experience, proficienc ...

Junior .NET Developer Remote | Growth & Perks

An online film rental company in London is seeking several Junior .NET Developers to contribute to complex software projects aimed at enhancing their leading streaming service. This role provides comprehensive training and a supportive environment, with promotions available within six months for top performers. ...

Frontend Developer – Global Live Events (Hybrid)

A pioneering technology business based in Letchworth is seeking a Mid-Senior Frontend Developer to join their team. This role involves designing and developing applications, collaborating with engineers, and providing hands-on support at global events. The ideal candidate will have an engineering mindset, adapta ...

Systems Developer — Shape Scalable Claritas Solutions

LE010 Antares Global Management Limited seeks a skilled developer for their Application Development team. The role involves enhancing Claritas, a critical bordereaux management system, by delivering secure and scalable solutions. Candidates should have strong experience with Python, Django, Vue.js, and a good ...

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 ...

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 ...

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 ...

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