32,172+ Java React Developer Jobs in UK — Top Companies Hiring July 2026

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AI/ML Data Platform Architect — Cloud Data Mesh Leader

A leading global financial services firm is seeking a Principal Architect to work within their Enterprise Technology, AI/ML & Data Platforms organization. The role involves designing data mesh architecture and maintaining data standards while leveraging AWS services to implement scalable data solutions. Ideal ca ...

Lead AI Software Engineer, Markets Tech & Credit Pre Trade

J.P. MORGAN is looking for a Lead Software Engineer to enhance and deliver market-leading technology products. The ideal candidate should have over 5 years of experience in software design and development using Python, Java, or C++. They will work with AI systems to support eTrading capabilities and engage direc ...

Data Platform Engineer – Lakehouse & AI (VP)

Goldman Sachs is looking for a Data Engineer to design and build reliable data pipelines on a modern data platform. In this role, you'll be responsible for data ingestion, transformation, and modeling, ensuring data quality and performance. The ideal candidate has a degree in a relevant field and stron ...

Backend Engineer for AI Startup — Ownership & Impact

An innovative AI startup in Greater London is seeking a Software Engineer to join its high-caliber team. In this role, you will work on backend systems integrating with LLMs, having direct conversations with customers and shaping products that make a real impact. Ideal candidates should have strong experience in ...

Backend Engineer – Fintech Payments Platform (B2B) | Hybrid

A leading fintech firm in Leeds is seeking a Backend Engineer skilled in Java, Kotlin, and AWS. This hybrid role requires designing and maintaining backend services for their innovative payments platform. The company offers a competitive salary of up to £65,000 plus bonuses, along with health insurance and two d ...

Senior Backend Architect for Payments & Fulfilment (Remote/Hybrid)

A leading online marketplace in the UK is looking for a Staff Backend Engineer to lead the technical vision for their Payments and Fulfilment systems. In this role, you will collaborate with cross-functional teams, drive technical design, and mentor engineers to elevate technical capabilities. The ideal candidat ...

Data Science Manager — Simulation & Digital Twins Leader

Tesco Technology is searching for a Data Science Manager to support automation of decision-making and optimize business processes at scale. The role involves line managing Data Scientists, mentoring the team, and overseeing simulation and digital twin projects across various business areas. Ideal candidates s ...

Remote IT Access Engineer — Cloud & On Prem Security

A global specialty chemicals company is seeking an IT Access Engineer to automate and improve their access management solution for a custom-built R&D data platform. The role, designed for remote work with occasional visits to Welwyn Garden City, involves communicating between cloud and on-prem systems, managing ...

Agentic AI Application Architect

Avanade is seeking an experienced AI Application Architect to join its Global Integrated Center of Excellence. This role involves designing intelligent, cloud-native applications leveraging agentic AI. The architect will modernize legacy systems, work collaboratively with teams, and drive AI adoption across vari ...

Forward Deployed Software Engineer Intern: World Impact

A leading technology firm in the UK is offering an internship as a Forward Deployed Software Engineer. Interns will work closely with customers, leveraging cutting-edge technology to address critical challenges in various industries. Candidates should have an engineering background and proficiency in programming ...

Senior Automation Test Engineer – Remote/Hybrid

CACI Digital Experience (formerly Cyber-Duck) is seeking a Senior Test Automation Engineer in Cheltenham, UK. In this role, you will ensure the quality, reliability, and scalability of software products while developing automated testing solutions. Responsibilities include leading test strategies, collaborating ...

Senior Full Stack Engineer Cloud, Security & Defence

A tech company is seeking a Senior Software Engineer to join their dynamic team in Farnborough, working on cutting-edge projects in secure digital technology. The role involves designing and maintaining software solutions, implementing backend systems using Java, Python, or Go, and deploying cloud services on AW ...

Senior Test Automation Engineer — Hybrid & Impactful Leadership

A dynamic challenger bank is seeking an experienced Test Automation Engineer to enhance their testing processes. In this role, you will collaborate with engineers, improve test coverage, and manage test pipeline issues. The ideal candidate will have a solid background in test automation and coding, particularly ...

Backend Engineer Equity from Day 1 + Learning Budget (UK)

A fast-growing accounting-tech startup in the UK is seeking a Backend Engineer to join their team. The role involves delivering advanced accounting technology and solving practical problems within a fast-paced startup environment. Candidates should have experience in backend engineering, particularly with Java o ...

Graduate Software Engineer: High Performance Systems

A dynamic technology firm in London is seeking a Graduate Software Engineer to join their innovative team focused on high-performance systems. The role promises hands-on experience in developing low-latency solutions for market data and requires a strong foundation in programming languages like Java and Python. ...

Applied NLP & LLM Scientist for Conversational AI

Amazon in Greater London is seeking an Applied Scientist to work on advancing conversational systems using Natural Language Processing and Large Language Models. You will develop solutions to enhance customer interactions, collaborating with scientists and engineers in a dynamic team. The successful ca ...

VP Lead Software Engineer – AI for Global XVA Risk

Citigroup Inc. is looking for a Lead Software Engineer at the Vice President level in London to work on AI-driven innovation. This role requires extensive software engineering experience including Python or Java, with responsibilities in building scalable systems and integrating AI solutions. Successfu ...

Senior Software Engineer End to End Cloud Delivery

Halliburton Energy Services in Abingdon seeks a Software Engineer to manage full software development cycles for energy industry applications. You will work on technologies including Java, C++, and cloud services. The role requires strong communication skills, experience in a collaborative environment, ...

FinTech DevOps Engineer Build Robust Pipelines (Newcastle)

Noir Consulting is seeking a talented DevOps Engineer to join a leading FinTech company in Newcastle. You will create and optimise the infrastructure for advanced trading platforms used by major financial institutions. In this role, you will improve deployment processes, ensuring systems are robust and ...

Staff Platform Engineer — GraphQL & Content APIs

Marks and Spencer is seeking a Staff Software Engineer to evolve its Content Domain platform, enhancing capabilities for product, engineering, and content teams. This pivotal role demands a robust platform mindset and backend engineering expertise in Java, along with profound knowledge of GraphQL and Azure. < ...

Software Engineer Scalable Systems (Hybrid, Manchester)

Harvey Nash Group is seeking Software Engineers in Manchester for a hybrid role with a salary range of £50,000 - £95,000 per annum. This position offers the chance to join a growing tech team delivering scalable, high-performance systems in a global financial services setting. Successful candidates wil ...

Secure Full Stack Engineer – SC Clearance Eligible

Frontier Resourcing is seeking a talented Full Stack Software Engineer in Farnborough, UK. The role focuses on delivering secure, scalable technology solutions within the defence sector. You will be responsible for building scalable backend services and contributing to a high-performing engineering tea ...

AI Driven Full Stack Engineer | Cloud, ML & Global Impact

Persistent Systems is hiring for a full stack development position in Glasgow, focusing on building and maintaining scalable web applications using Java, Python, or Node.js. The role involves collaborating with Data Scientists to deploy AI/ML models into production and optimizing database management through S ...

Hybrid Principal Engineer: Cloud Solutions & API Leadership

Sivara GmbH seeks a Principal Engineer to provide technical leadership in delivering complex solutions. This hybrid role balances home working with time in our Bradford and Leeds offices. Collaborate closely with engineering teams and stakeholders to influence design and delivery of scalable technology soluti ...

Lead Software Engineer, Services — Hybrid London

Capital One is seeking a Lead Software Development Engineer based in London to drive innovation and technical excellence within their engineering department. The role involves collaborating with various stakeholders to deliver quality applications while fostering best practices, particularly in backend servic ...

Senior Software Engineer – Search & Discovery Platform

Roku, Inc. in Cambridge is seeking a Senior Software Engineer to design and develop platform products used by millions of consumers. The role involves close collaboration with Product/Design teams and emphasizes a strong foundation in large-scale systems and cloud services. The ideal candidate should p ...

AVP Software Test Engineer – Hybrid Belfast

Citibank (Switzerland) AG in Belfast is looking for a Software Test Engineer (AVP) to join their Global Fixed Income Trade Processing Team. The ideal candidate will have strong experience in automation testing (Selenium/Cypress), Java programming, and the ability to deliver testing strategies to ensure software ...

Market Data Software Engineer Analytics & Data

TradingHub in Greater London is seeking a Software Engineer focused on developing and supporting market data environments. The successful candidate will work alongside pricing quants and risk strategists, contributing to data analytics integral to TradingHub's products. Ideal applicants should have exp ...

Senior Lead Software Engineer Architect Secure Systems

JPMorgan Chase & Co. is seeking a Senior Lead Software Engineer in Glasgow, Scotland to join the Capital Technology team. In this role, you will lead the development of market-leading technology products, ensuring they are secure, stable, and scalable. Your responsibilities will include developing tech ...

Data Engineer Lakehouse & AI Platform (London)

WeAreTechWomen is looking for a Data Engineer to join the Lakehouse and AI Data Platform team in Greater London. You will design and build robust data pipelines, ensuring data quality and performance across the firm's modern data platform. The ideal candidate holds a degree in a relevant field and has ...

Director, Ultra Low Latency Distributed Systems

Ocho People is hiring a Director, Staff Engineer in Belfast to lead technical innovations in low-latency systems for financial markets. With a salary range of £100,000 to £135,000, this role provides architectural influence on core trading infrastructure. Applicants should have 8+ years of experience i ...

Data Platform Tech Lead AI Driven Cloud Solutions (Hybrid)

Reed Professional Services is looking for a hands-on Technical Lead to spearhead the design and delivery of scalable, cloud-native data solutions. This role involves leading engineering practices and mentoring engineers, focused on building secure, scalable applications. Applicants should have substant ...

Cloud First Technical Architect — AWS Migration Lead

A leading technology consulting firm is seeking an experienced Technical Architect for a 5-month contract role based in Edinburgh. This hybrid position requires expertise in AWS Cloud and Red Hat infrastructures. The candidate will guide the migration of applications to AWS, collaborate with development teams, a ...

Hands On Software Engineer Intern – Hybrid UK

Lucy Electric in Basildon is seeking a candidate for a hands-on role focused on enhancing software and product development. This opportunity will allow you to gain technical knowledge while working alongside experienced engineers. The successful candidate will help define technical solutions, deliver w ...

Senior Enterprise Architect – Transformation & Governance

La Fosse Associates Limited is seeking an experienced Enterprise Architect to join their team in London. This hybrid role involves assessing current technologies and shaping future architectures through strategic initiatives. The ideal candidate will have a strong background in enterprise architecture, govern ...

Senior Software Engineer – Trade Processing (Hybrid)

United States Digital Space LLC is seeking a Senior Software Engineer (Associate) for its London office. This hybrid position involves developing a global trade processing system as part of a global team. Candidates should possess strong Java skills and a good understanding of DevOps principles. The ro ...

Senior Backend Architect — AI Driven Systems & Scale

Andercore GmbH is seeking a Senior Backend Engineer in Greater London. You will take ownership of complex backend systems, leading technical discussions and mentoring junior engineers. The ideal candidate will have over 7 years of backend engineering experience, deep expertise in Java, and strong familiarity ...

Senior Payments Platform Architect — Cloud Native & AI

Endava is seeking a Payments Solution Architect to join their team in Greater London. This senior role focuses on shaping enterprise-scale payment platforms, requiring extensive knowledge in payment ecosystems and strong solution architecture skills. The architect will be responsible for designing resi ...

Platform Engineer: Cloud Native Fintech Systems

A leading financial services firm in Greater London is seeking a Platform Engineer to join their innovative team focused on creating customer-centric products. The role requires a blend of programming skills, particularly in Kubernetes and languages such as Go and Java, and emphasizes the importance of collabora ...

Simulation Engineer – High Fidelity Plant Simulation

Kion Group AG is seeking a Simulation Engineer in Stockport, United Kingdom. The successful candidate will design and develop high-fidelity simulation models while conducting experiments to enhance control strategies for automated systems. This role requires proficiency in Siemens Plant Simulation and ...

Senior Solutions Engineer Post Sales (Remote)

Qualcomm is seeking a Software Application Engineer based in the UK to provide technical expertise and support for the Edge Impulse platform. This remote role involves collaborating with customers and stakeholders to develop solutions and communicate technical features effectively. The ideal candidate ...

Safety Critical Software Engineer (C/C++/C#) – Windows

Java Script Works is seeking a Software Engineer proficient in C, C++, and C#. This full-time position is based in Crawley, United Kingdom. The candidate will work on safety-critical systems in aerospace and automotive fields, with experience in Windows application development using Visual Studio as a primary ...

Senior Software Engineer — End to End, Low Latency Systems

Expedia, Inc. is seeking a Software Engineer to own mission-critical services for distributed pricing at a global scale. In this role, you'll analyze complex problems, deliver technical solutions, and mentor team members. A Bachelor's degree in Computer Science or equivalent experience is required. The ...

Senior Quant Engineer Exotic Derivatives (Hybrid, 12m)

Randstad Technologies Recruitment is looking for a hands-on Quantitative Engineer specializing in Exotic Derivatives located in London. This role demands 15+ years of experience with responsibilities including the design and implementation of production-grade pricing and risk models for complex exotic OTC der ...

Frontend Engineer, Internal Audit — Analyst/Associate

Goldman Sachs Group, Inc. is seeking an Internal Audit - Front End Engineer in Birmingham. The role involves designing and implementing software solutions to support audit processes and collaborating with engineering teams. The ideal candidate should have a Bachelor's degree in Computer Science and at ...

Senior Software Engineer: Scalable Backend for Mobility

Metropolis in Stockport is seeking a Senior Software Engineer to join its AeroParker team. This role entails designing and building backend services, mentoring engineers, and driving product direction while leveraging technologies like Scala and Java. The ideal candidate will have 7+ years of experienc ...

Senior Director of Platform & AI Engineering

J.P. MORGAN in Glasgow is seeking a Senior Principal Software Engineer to enhance and deliver market-leading technology products within the Cloud Foundation Services group. You will leverage your deep expertise to innovate for business impact and lead strategic development behind new and existing products. </ ...

Staff Software Engineer Sterling OMS & SIP Expert

Infoplus Technologies UK Ltd seeks a Staff Software Engineer to join their Software Engineering team. This role involves working on innovative solutions for millions of customers while driving the transformation into a digital-first organization. The ideal candidate will have extensive experience with ...

Quant Dev: Trading Infrastructure & Backtesting

Vertus Partners is looking for a build-heavy quant engineering professional in Greater London. The role involves creating infrastructure for testing and scaling trading ideas, requiring strong Java skills and a background in high-performance systems. Candidates should have experience in quantitative en ...

Senior Software Engineer Scale Global FinTech Systems

Bloomberg L.P. is looking for a Senior Software Engineer in London to lead the software development lifecycle, from design to maintenance. You'll take ownership of distributed systems and build scalable solutions while collaborating with product managers and engineers. The ideal candidate holds a degre ...

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