1,360,540+ Lead Software Engineer Full Stack Java React Jobs in UK — Top Companies Hiring July 2026

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Senior UI Software Engineer II

Are you passionate about building high‑performance, data‑driven user interfaces that surface complex insights clearly and securely? Do you enjoy working closely with engineers and data teams to turn advanced analytics and AI into intuitive products customers rely on every day? About ...

Software Engineer III (Python & C#)

Software Engineer III (Python & C#) Excited to architect, build, and elevate complex systems? Do you thrive in solving challenging problems with Python and C#, while driving engineering excellence across teams? About the team: LexisNexis Intellectual Proper ...

Senior Simulation Software & Security Engineer

**Job Description** At Boeing, we innovate and collaborate to make the world a better place. We’re committed to fostering an environment for every teammate that’s welcoming, respectful and inclusive, with great opportunity for professional growth. Find your future with us. Boeing Global Service ...

DeltaV Software Quality Assurance Engineer

**Work Schedule** Standard (Mon-Fri) **Environmental Conditions** Office **Job Description** **Job Title: DeltaV Software Quality Assurance Engineer** **Reports to: Senior Manager, Quality and Site Leader** **Group: ...

Automation & Controls Software Engineer Hybrid

Guided Talent is seeking a talented Software Engineer to support the development of complex automation systems for the food processing industry. This role involves designing and maintaining software for sophisticated machinery, working closely with multidisciplinary teams. Successful candidates will ha ...

Automotive ECU Software & Configuration Engineer

Adecco, in partnership with Bentley Motors, is seeking a Software & Configuration Engineer to drive innovation in the automotive industry. This role entails supporting vehicle projects throughout development, production, and aftersales by ensuring ECU software and hardware are maintained to enable successful ...

Front End Developer Software Engineer

Front End Developer - Software Engineer Join to apply for the role at The Times . Your Team You will be joining the Customer Optimisation team, part of the wider Times Media customer and Customer Operations area. Our mission is to deliver front‑end optimisations and exper ...

AWS Software Engineer (Ref: 194893)

AWS Software Engineer (Contract) – Python / FastAPI 6 Month Contract – Fully Remote – Daily Rate: £500 Outside IR35 We’re looking for experienced AWS Software Engineers (contractors) to join an established platform engineering team and help take a proof‑of‑concept Identity & Ac ...

Senior UAV Embedded Software Engineer

Matchtech is seeking an experienced Embedded Software Engineer to join their team at Aberporth Airport, West Wales. This role involves designing and developing embedded software for cutting-edge UAV platforms in the Defence & Security sector. The successful candidate will have strong skills in C/C++ pr ...

AI Native Staff Engineer: Global Backend Lead

Life360 seeks a Staff Software Engineer AI-Native to design high-quality services for international members, focusing on AI integration. This role involves building backend solutions with modern technologies such as Java and AWS, ensuring the platform meets the needs of families worldwide. Candidates should have ...

Loan IQ Devops Engineer Nigel Frank

This job is posted by our partner Jooble. Engineer with a software development background, specifically in .NET/C#. Responsibilities Scripting & Programming (Bash, Python, Go, Java, or similar) for automation scripts Some knowledge of Containerization & Orchestration (D ...

Engineering Senior Backend Engineer Insights (Scala)

We believe that everyone can and should automate the tools they use every day. The Tray Platform empowers anyone to do more faster by harnessing automation with the industry-leading, low-code general automation platform. With, citizen automators throughout organisa ...

Senior C# Software Engineer X 4

Senior C# Software Engineer X 4 Are you a talented C# and Azure developer ready to take ownership of innovative projects across Web, Desktop, and Cloud environments? Our client, a well-established and forward-thinking software development company, is expanding its team and seeking an exceptional ...

Tech Lead Fullstack Developer

Full Stack Tech LeadReporting To: Group Engineering ManagerLocation: Remote, with travel to Bournemouth or Bristol twice a monthJob Type: Full Time - 37.5 hours per weekOur Purpose: A Better Life for EveryoneNourish is not simply a technology company; we ...

Senior Java Engineer for AI‑Driven Research Platform

Elsevier is seeking a Senior Java Software Engineer II located in Oxford, UK. This role focuses on building capabilities to support scientific researchers in their publication processes by evolving technology, including AI solutions. The ideal candidate will design and deploy cloud-based applications, ...

Senior Software Test Engineer – Fixed Income Automation

Citi is seeking a Software Test Engineer for the Global Fixed Income Trade Processing (FiTP) Team in Belfast. This role involves automation testing, developing test plans, and ensuring quality for critical applications. The ideal candidate will have hands-on experience in Selenium or Cypress, strong Ja ...

Backend Engineer, Crypto Trading (Hybrid London)

A leading technology company in London is seeking a Software Engineer to design and maintain backend services for crypto trading. This role requires expertise in Go, Java, C++, C#, or Python, and offers a hybrid work environment. Ideal candidates will have problem-solving skills and a proactive mindset, along wi ...

Hybrid Automation QA Engineer – CI/CD & Test Automation

A global technology company in the UK is seeking a Quality Engineer specializing in Automation. The successful candidate will streamline testing processes and ensure reliable software delivery using advanced test automation tools like Selenium and Cypress. Applicants should have a Bachelor's Degree and strong pr ...

Cloud Native Java Engineer | CI/CD & Security Focus

Accenture is seeking a Software Engineer in Leeds, UK, to develop and deploy applications in an agile environment, utilizing technologies such as Java and AWS/Azure. The role includes deploying applications using CI/CD and ensuring quality through comprehensive testing. With a competitive salary, the benefits pa ...

ML Projects Engineer: AI Driven Banking Systems

A leading digital bank in Greater London seeks a skilled software engineer to join their ML Projects team. In this role, you will design, implement, and maintain machine learning features, working closely with engineers and data scientists. The ideal candidate will have strong skills in Python, Java, and cloud t ...

Trading Tools Engineer — Embedded Desk, Low‑Latency

A diversified trading firm is seeking a Software Engineer to collaborate with trading desks and enhance trading tools. The role involves ownership from prototype to production, while working with multiple languages, including Python, Java, and C++. Ideal candidates will have a minimum of 2 years of experience in ...

Backend Java Engineer AWS | Fintech for Good | Hybrid

Client Server is looking for a Software Engineer / Developer in London, offering a salary up to £90k. You will work on innovative financial tech solutions that empower communities globally. In this role, you’ll have a solid background in Java and AWS, collaborating to enhance the payment platform with ...

SC Cleared Site Reliability Engineer | Hybrid (Gloucester)

Searchability NS&D is looking for a Site Reliability Engineer to join their team in Gloucester. This permanent role offers a salary up to £65,000 depending on experience and supports a hybrid working model. The ideal candidate will have active SC Clearance and experience in similar roles, as well as st ...

Payments Systems Software Engineer Hybrid (Edinburgh)

A leading banking institution in Edinburgh is seeking a Software Engineer to support Instant Payments products and enhance their Faster Payments Gateway. The ideal candidate will have experience with Java, Spring Boot, and agile practices while enjoying a hybrid work pattern. This role provides opportunities for ...

Senior Data Quality Platform Engineer—AWS & PySpark

Addepar in Edinburgh seeks a skilled Software Engineer to design and build scalable data quality frameworks for financial data processing. You will own services end-to-end, collaborating across teams to deliver impactful features, while working with technologies like AWS, Java, and Python. The ideal ca ...

Backend Engineer III (Java & Spring) for Scalable APIs

LexisNexis Risk Solutions in Oxford is looking for a Software Engineer III specializing in Java and Spring Boot. This role involves designing and improving services for document transformation and semantic enrichment, working in a collaborative environment with technologies like AWS and Kafka. The company promot ...

Senior Java Backend Engineer – Low Latency FinTech (Remote)

Client Server is looking for a Backend Software Engineer / Developer in London with the option to work from home, offering a salary of up to £100k. You will design and develop trading systems, utilizing advanced Java and other technologies in a microservices environment. This role requires expertise in ...

Remote Product Reliability Engineer — AI Driven, Scalable SaaS

Pinpoint, a high-growth HR tech company in the UK, is seeking a Product Reliability Engineer to ensure the reliability of its recruitment software. This remote role involves handling the entire lifecycle of product issues, enhancing other teams’ efficiency, and integrating AI tools.Ideal candidates will ha ...

Software Engineer Northern Ireland Remote

Olo is a leading SaaS platform accelerating digital transformation in the restaurant industry, by helping customers deliver more personalised and profitable guest experiences. As a result, our digital ordering, payment, and guest engagement solutions enable brands to do more with less and make every guest ...

Cloud Security Engineers Multiple Levels

Cloud Security Engineers - Multiple LevelsBelfast | Hybrid Build Security. Lead Engineers. Protect Cloud Platforms.We're hiring a hands-on Cloud Product Security Engineering Manager to lead a team building and operating cloud-native security controls across lar ...

Frontend Engineer: US & Canada

We're building a new healthcare clearinghouse In the healthcare sector, the Health Insurance Portability and Accountability Act of 1996 (HIPAA) requires that all insurance payers exchange transactions such as claims, eligibility checks, prior authorizations, and remittances using a standardized E ...

Senior Mechanical Design Engineer

Mechanical Design Engineer Location: Castle Donington - Hybrid/FlexibleContract: 6 Months, Outside IR35Type: Full‑Time The Role This is a contract outside IR35 role working on a project involving designing a range of turbomachinery and gas turbine related components. < ...

C++ 20/23 Engineer Hybrid, High Perf ML Pipelines

Hunter Bond is seeking a talented C++ 20/23 Software Engineer to join an elite tech-driven trading firm in London, offering hybrid work. This role involves building high-performance software solutions and optimizing ML pipelines while collaborating with exceptional technologists. With a modern tech sta ...

Frontend Engineer — Real Time GIS Dashboards & Field UX

Arctic Research and Development in Cirencester is seeking a Frontend Software Engineer to architect user interfaces for their Arctic OS. The role involves collaborating with backend and hardware engineers to create intuitive experiences that seamlessly interact with data-rich environments. Candidates s ...

Senior Software Engineer: Scalable E commerce Platform

A fast-growing technology startup is seeking a Senior Software Engineer to shape the future of its core systems. The ideal candidate will work closely with the CTO and the product team, focusing on building reliable and scalable solutions. Confidence in technologies such as Typescript, Node, and React is essenti ...

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 ...

Senior Elixir Engineer | Remote Healthtech Leader

Doccla is seeking a Senior Fullstack (Elixir) Engineer to drive the development of compliant, production-grade software in a fast-paced, regulated healthcare environment. The role involves delivering high-quality solutions while working with cross-functional teams to enhance patient safety and operational eff ...

Creative Frontend Engineer: Immersive WebGL & UX

Vista Group is seeking a Creative Software Engineer in London for a 9–12 month fixed-term contract focused on UX/UI. This role involves ownership of web application projects in a creative studio environment, collaborating on innovative solutions for major clients. Candidates should have 3+ years of exp ...

Graduate Software Engineer Hybrid AI FinTech (London)

Oliver Bernard is recruiting for a Graduate Software Engineer to enhance their dynamic team in London. This role offers a unique chance to work with advanced AI technologies within a thriving FinTech SaaS start-up. Ideal candidates are anticipated to be Computer Science graduates from 2025 or 2026, wit ...

Senior SDET: Embedded & IoT Test Automation Leader

A leading technology-driven organization in the United Kingdom is seeking a highly skilled Senior Software Development Engineer in Test (SDET). The role involves driving automation excellence across embedded and connected device platforms, with a focus on developing and maintaining automation frameworks. The ide ...

Node Developer in London Solirius Reply

Key Skills/Experience: Proven experience in Node.js development Strong knowledge of JavaScript (ES6+), asynchronous programming, and event-driven architecture. Experience with building and maintaining RESTful APIs and related tools. Experience with testing fram ...

Senior Java Programmer – London, UK

Java Lead Programmer – London, UK Leading Design Engineering Company. Specialist engineers to the energy sector. A fast growing, innovative and exciting company to work for, that offers excellent chances for technical and personal development. A lead development en ...

Backend Software Engineer C# Rust HFT

London, Greater London | £65k - £80k per year Backend Software Engineer / Developer (C# .Net Rust Low Latency HFT) London / WFH to £80k+ Opportunity to join a hugely profitable High Frequency Trading firm that specialise in crypto markets and earning substantial bonuses in a hands‑on role ...

Backend Software Engineer C# Rust HFT

Backend Software Engineer / Developer (C# .Net Rust Low Latency HFT) London / WFH to £80k+Opportunity to join a hugely profitable High Frequency Trading firm that specialise in crypto markets and earning substantial bonuses in a hands-on role, working with C# and Rust.As a Backend Softwar ...

Backend Software Engineer C# Rust HFT

Backend Software Engineer / Developer (C# .Net Rust Low Latency HFT) London / WFH to £80k+Opportunity to join a hugely profitable High Frequency Trading firm that specialise in crypto markets and earning substantial bonuses in a hands-on role, working with C# and Rust.As a Backend Softwar ...

Mid Senior Front End Engineer — Real Time Finance UIs

A prestigious trading firm in London is seeking a Front-End Software Engineer to join their high-performance team. In this role, you will build visually intuitive web interfaces using React and TypeScript, collaborate closely with traders, and refine complex front-end architectures. The ideal candidate will have ...

Senior Embedded Software Engineer, Ring

As a Senior Embedded Software Engineer, you will be a core member of a software team developing Ring's next generation of camera-centric devices. While experience with embedded systems is valuable, we're looking for engineers passionate about building IoT products who are eager to work close to the hardware.<br/ ...

Senior Embedded Software Engineer, Ring

As a Senior Embedded Software Engineer, you will be a core member of a software team developing Ring's next generation of camera-centric devices. While experience with embedded systems is valuable, we're looking for engineers passionate about building IoT products who are eager to work close to the hardware.<br/ ...

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    Lead Software Engineer Full Stack Java React Jobs in United Kingdom Job Search Guide, Trends and Insights