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Senior Software Engineer - Java United Kingdom Jobs

151 Job Offers

Senior Software Engineer
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United Kingdom , London
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Collinson
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Senior Software Engineer, Subscriptions
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Senior Software Engineer, Subscriptions – Manchester, UK. Join Roku, the #1 TV streaming platform, to develop core features for the Roku OS using C++, Embedded Linux, and ReactJS. You will design and ship high-quality software, write tests, and collaborate cross-functionally. Enjoy global wellnes...
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United Kingdom , Manchester
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Roku
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Senior Software Engineer
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United Kingdom , London
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80000.00 - 95000.00 GBP / Year
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Orbis Consultants
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Senior Software Engineer
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United Kingdom , London
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150000.00 - 160000.00 GBP / Year
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Orbis Consultants
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Senior Software Engineer
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United Kingdom , London
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Optimizely
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Senior Software Engineer, Ad Auctions
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United Kingdom , Cambridge
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Roku
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Senior Software Engineer
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Senior Software Engineer sought for a fully remote UK role with a cloud-native leader in child safety technology. You will design and build high-performance backend services using Golang and GCP, alongside frontend work with TypeScript and React. Key requirements include microservices, SQL, CI/CD...
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United Kingdom
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75000.00 - 85000.00 GBP / Year
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Premier Group
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Senior Software Engineer
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Senior Software Engineer (C++ / Algorithms) sought to build a high-performance visualization engine in the UK. This role demands strong C++ skills, deep computer science fundamentals, and a passion for solving complex algorithmic and graphical problems. Join a culture of technical excellence, foc...
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United Kingdom
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200000.00 GBP / Year
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Oho Group Ltd
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Senior Software Engineer
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Join Microsoft’s MORSE team as a Senior Software Engineer in the UK, securing Windows, Azure, and virtualization technologies for over a billion users. You’ll perform security design reviews, code reviews, and vulnerability research, building mitigations and scalable bug detection systems. Requir...
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United Kingdom , Multiple Locations
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Microsoft Corporation
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Full-Stack Senior Software Engineer, GenAI Data Products and Platform (VP)
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Join Citi as a VP Full-Stack Senior Software Engineer to build 'Citi Assist', a GenAI assistant for global employees. You’ll own end-to-end features using Python, TypeScript, and React, working with data pipelines and cloud infrastructure (OpenShift/Kubernetes). Based in London, this role offers ...
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United Kingdom , London
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Citi
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Senior Software Engineer (Kotlin)
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Senior Software Engineer (Kotlin) sought by hyperexponential, a high-growth AI startup backed by a16z. Build scalable, cloud-native data systems on AWS using Terraform and Kotlin. You will design distributed analytics infrastructure and deliver customer-facing features for a $7 trillion insurance...
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United Kingdom , London
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hyperexponential
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Senior Software Engineer
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Senior Software Engineer sought by a London health-tech scale-up to scale a platform used by 100k+ customers. You’ll own problems end-to-end, working across Python backend, React/TypeScript frontend, and AWS infrastructure. Ideal candidates have 5+ years experience, actively use AI in their workf...
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United Kingdom , London
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100000.00 GBP / Year
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Orbis Consultants
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Senior Software Engineer
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Join a greenfield AI startup in London redefining innovation discovery and protection. As a Senior Software Engineer, you’ll build production systems from scratch using Java, TypeScript, or Python, integrate with LLMs, and collaborate directly with founders. No legacy code or bureaucracy—just fas...
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United Kingdom , London
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120000.00 - 150000.00 GBP / Year
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Linux Recruit
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Senior Software Engineer - Margin Technology - Assistant Vice President
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Senior Software Engineer (AVP) sought for Citi’s Margin Technology team in London. You will build high-impact financial systems using Java, React, and Python, with expertise in RESTful APIs, Spring, and TDD. Ideal candidates have investment banking experience and knowledge of AWS, Kafka, or Kuber...
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United Kingdom , London
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Citi
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Senior Software Engineer - Margin Technology
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Senior Software Engineer - Margin Technology at Citi in Belfast. Build high-impact financial systems using Java, React, and Python, with RESTful APIs and TDD. Join a global team solving complex problems at massive scale. Enjoy 27 days leave, bonus, private medical, and hybrid work.
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United Kingdom , Belfast
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Citi
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Senior Embedded Software Engineer
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Senior Embedded Software Engineer sought to architect next-gen motion control systems for robotics and industrial automation. This role demands strong C/C++, ARM, and RTOS/bare metal expertise to optimize real-time algorithms. Based in Gloucestershire, you'll join a global R&D team solving comple...
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United Kingdom , Gloucestershire
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T2M Resourcing
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Senior Software Development Engineer
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AMD seeks a Senior Software Development Engineer in Cambridge, UK to design Linux network device drivers for 800G+ SmartNIC adapters. You will write high-quality C code, lead complex driver development, and submit changes to the upstream Linux kernel. Requires 5+ years of experience, proven Linux...
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United Kingdom , Cambridge
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AMD
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Senior Software Engineer
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Senior Software Engineer sought to design and deliver scalable micro frontend architectures using React, TypeScript, and NestJS. This UK-based role focuses on building high-performing, secure applications with a DevSecOps mindset. You will mentor engineers, drive CI/CD improvements, and shape tec...
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United Kingdom
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Admiral Group Plc
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Senior Software Engineer
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Senior Software Engineer sought in Belfast to build high-quality, scalable applications impacting global users. You will drive technical decisions, mentor junior developers, and apply best practices in security and performance. Ideal for experienced engineers proficient in full-stack development,...
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United Kingdom , Belfast
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Kainos
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Senior Software Engineer - Cloud Infrastructure & Observability
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Senior Software Engineer sought to architect Roku’s next-gen observability platform in Cambridge, UK. You will lead multi-cloud infrastructure, scaling metrics, logs, and traces across thousands of services. Requires deep Golang, Kubernetes, and Prometheus expertise, plus experience with Istio an...
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United Kingdom , Cambridge
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Roku
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About the Senior Software Engineer - Java role

Explore Senior Software Engineer - Java jobs and discover a pivotal career at the heart of modern technology. A Senior Software Engineer specializing in Java is a seasoned professional responsible for designing, developing, and maintaining robust, scalable, and high-performance software systems. This role transcends basic coding, involving deep architectural thinking and end-to-end ownership of complex applications. Professionals in these jobs are instrumental in transforming business requirements into technical solutions, ensuring system reliability, security, and efficiency.

Typical responsibilities for a Senior Java Engineer encompass the full software development lifecycle. They architect and implement backend services, microservices, and APIs, often using frameworks like Spring Boot. A core duty is designing scalable system architectures, making critical decisions on data storage with SQL (e.g., PostgreSQL) and NoSQL (e.g., MongoDB) databases. They write clean, maintainable, and well-tested code while enforcing best practices through code reviews. These engineers also optimize application performance, troubleshoot complex issues, and ensure seamless integration with front-end systems and third-party services. Furthermore, they frequently collaborate with cross-functional teams, including product managers, DevOps, and quality assurance, to deliver cohesive products. Leadership is a key aspect, as they mentor junior developers, lead technical discussions, and contribute to strategic planning.

The typical skill set required for Senior Software Engineer - Java jobs is comprehensive. A strong foundation in core Java, object-oriented design, and design patterns is essential. Proficiency with enterprise frameworks (Spring, Hibernate), RESTful API design, and microservices architecture is standard. Experience with cloud platforms (AWS, Azure, GCP) and containerization tools like Docker and Kubernetes is increasingly important. These roles demand expertise in build tools (Maven, Gradle), version control (Git), and CI/CD pipelines. Beyond technical acumen, successful candidates possess strong problem-solving abilities, excellent communication skills for articulating technical concepts, and a proactive approach to learning new technologies. A bachelor’s degree in computer science or a related field, coupled with 5+ years of progressive development experience, is commonly expected.

Ultimately, Senior Software Engineer - Java jobs are for those who thrive on technical challenges and leadership. It is a career path defined by building foundational business logic, driving innovation, and ensuring the technical excellence of software products that power organizations worldwide.