151 to 175 of 297 Java Jobs in London

/Hybrid Description Role Description We are seeking a Senior Software Developer with a strong focus on developing production-grade software, extensive experience with Azure services, and proficiency in Java, Python, PySpark. You will manage a team and collaborate with a third-party vendor to deliver robust, scalable solutions. Role Responsibilities Owning the development team in design, development, coding, testing. More ❯

Java Full-Stack DeveloperLocation: London (Hybrid)Salary: £85,000 – £90,000 + benefitsI’ve partnered with an exciting tech firm who are building software that transforms how stakeholders make important decisions. What started as a consultancy has evolved into a SaaS platform that helps organisations cut through hundreds of pages of board packs and focus on what matters. Their products … combine Java, AI, and modern web technologies to deliver clarity and speed for decision-makers.They’re estimated at nearly $30M, annually, and have 3 offices globally, with the view to grow their UK footprint. Having recently doubled down on AI-driven tools, they are tackling the biggest pain points stakeholders have, information overload and poor decision-making efficiency. What You … ll Do Develop and enhance their core services built in Java (Spring Boot). Work on full-stack features using React (or similar modern JS frameworks). Collaborate on new product initiatives, including AI-powered tools. Contribute to architecture decisions and help shape the future Tech Stack Backend: Java (Spring Boot), Ruby on Rails (legacy), Golang, Python (AI services) Frontend More ❯

We are urgently seeking a highly skilled SC Cleared Java Backend Developer to join a critical project with a high-profile Government Client . This is a key technical role focusing on a vital component of the client's technology landscape: migrating a legacy message queueing system to a modern, scalable platform click apply for full job details More ❯

of data warehousing concepts, data modelling, and schema design. Experience with other ETL tools (Informatica, Talend, SSIS) is a plus. Advanced SQL for querying and data manipulation. Familiarity with Java, Python, or VBA for scripting and automation click apply for full job details More ❯

AI Engineer (Java, Golang) 6 Months Contract Inside IR35 Pay rate- 600- 750 GBP per day Inside IR35 Work mode- Remote We are looking for a passionate (Backend Engineer AI Engineer AI Agent Developer) to join the IT studio, the team responsible for advancing the digital workplace experience click apply for full job details More ❯

with a consultancy who are looking to bring on an SC cleared front end developer to assist on a project with a public sector client. Key Skills: React TypeScript Java experience highly beneficial The successful candidate will need to have active SC clearance for this position. If you're interested in learning more about this role, please apply with your More ❯

and Skills: Proven leadership and team management experience Ability to influence cross-functional teams and senior stakeholders Extensive experience building complex Android applications System design and architecture capabilities Kotlin, Java, and Jetpack Compose Experience with Agile methodologies, TDD, and CI/CD practices This is an excellent opportunity to help shape the future of digital banking and contribute to a More ❯

own core login/signup capabilities for a Tier 1 Global Consumer Platform . This is a high-scale, mission-critical role demanding deep technical expertise. Must Haves: Strong Java Backend Systems experience. Proficiency with Next.js and JavaScript. Experience with High-Scale, Consumer-Facing Products. Knowledge of Kubernetes, GCP, and OAuth 2.0. This is an urgent vacancy with a deadline More ❯

transformation experience Monolith → Microservices migrations Strangler patterns Platform architecture & roadmap planning Ability to work closely with engineering teams in complex technical environments The tech stack consists of: Kotlin/Java backend APIs Frontend with Express + TypeScript AWS, event-driven architecture Designing architectural boundaries (no expectation to get hands-on with code) Active SC Clearance is essential. Please apply by More ❯

own core login/signup capabilities for a Tier 1 Global Consumer Platform . This is a high-scale, mission-critical role demanding deep technical expertise. Must Haves: Strong Java Backend Systems experience. Proficiency with Next.js and JavaScript. Experience with High-Scale, Consumer-Facing Products. Knowledge of Kubernetes, GCP, and OAuth 2.0. This is an urgent vacancy with a deadline More ❯

transformation experience Monolith → Microservices migrations Strangler patterns Platform architecture & roadmap planning Ability to work closely with engineering teams in complex technical environments The tech stack consists of: Kotlin/Java backend APIs Frontend with Express + TypeScript AWS, event-driven architecture Designing architectural boundaries (no expectation to get hands-on with code) Active SC Clearance is essential. Please apply by More ❯

large-scale data pipelines, and real-time detection engines - all built to make the internet a safer place. You’ll thrive here if you: Have strong OOP experience (Python, Java, Go, or Rust - core stack: C#, and they’ll support you ramping up) Enjoy turning complex systems into clean, elegant solutions Like working in a fast-paced environment with real More ❯

early-stage tech and comfort with rapid iteration. Ability to work with diverse stakeholders across climate, tech and insurance. Must have Insurtech OR Climate/Carbon background Experience with Java Interest in climate action and carbon-reduction science. Why it’s interesting Influence the technical direction from an early stage. Work with mission-driven colleagues. Apply engineering skills to meaningful More ❯

data structures, and distributed systems Experience building and operating large-scale backend systems Expertise in system and API design, scalability, and performance tuning Proficiency in a modern backend language (Java preferred) Knowledge of cloud-native architectures, containers, and CI/CD Proven leadership in technical strategy and mentoring What you need to do now If you're interested in this More ❯

data structures, and distributed systems Experience building and operating large-scale backend systems Expertise in system and API design, scalability, and performance tuning Proficiency in a modern backend language (Java preferred) Knowledge of cloud-native architectures, containers, and CI/CD Proven leadership in technical strategy and mentoring What you need to do now If you're interested in this More ❯

through reviews, feedback, and technical leadership What we’re looking for 3+ years building and maintaining production Flutter apps at scale 5+ years in iOS and Android development (Swift, Java, Flutter) 10+ years of professional software engineering experience Deep knowledge of modern state management approaches Hands-on experience with monitoring tools (Firebase Crashlytics, Sentry, New Relic, or similar) Strong communicator More ❯

computational design, environmental analysis, advanced geometry, BIM, parametric modelling, or animation. High proficiency in Rhino, Grasshopper, Revit, Dynamo, Microstation, CATIA/Digital Project, Generative Components. Programming skills: Python, C#, Java, Javascript, Processing, or VBA. Deep understanding of 3D workflows, geometry, and digital fabrication in the built environment. Strong communication, problem-solving, and team collaboration skills. Highly organised, proactive, and resilient More ❯

BI platform, such as Apache Superset, Looker, Metabase, SAP BI/SAC, MicroStrategy, Microsoft Power BI, Tableau, or Qlik. Familiarity with agile development methodologies. Nice to have Experience in Java Experience in test driven development Experience with continuous integration systems Company Benefits Private pension Bonus Full medical cover Dental care flexi working Free fruit Snacks coffee etc. 25 days holiday More ❯

through reviews, feedback, and technical leadership What we're looking for 3+ years building and maintaining production Flutter apps at scale 5+ years in iOS and Android development (Swift, Java, Flutter) 10+ years of professional software engineering experience Deep knowledge of modern state management approaches Hands-on experience with monitoring tools (Firebase Crashlytics, Sentry, New Relic, or similar) Strong communicator More ❯

experienced technologists and finance professionals to deliver high-value AI solutions. Required Experience & Skills: 2+ years software development, 1-2+ years in AI/ML development. Python (mandatory), Java or TypeScript (advantageous) ML fundamentals, LLM integration, prompt engineering, RAG workflows, AI frameworks and Fine-tuning. Mindset: Self-motivated, growth-oriented, passionate about emerging AI tools. Environment: Comfortable in a More ❯

SC900) qualified ideally Virtualisation (ESXI/HyperV/Virtualisation) Technologies: MS Server 2019/22, Redhat Linux, AD and Group Policy Management, MS Certificate and KPI, MS SQL, Gigaspace, Java, Network config and Management, WSUS,/UXMS Hardware: Cisco LAN/WAN switches, Dell/Fujitsu/HP Server and user devices, Dell/Fujitsu/HP Server and SAN More ❯

SC900) qualified ideally Virtualisation (ESXI/HyperV/Virtualisation) Technologies: MS Server 2019/22, Redhat Linux, AD and Group Policy Management, MS Certificate and KPI, MS SQL, Gigaspace, Java, Network config and Management, WSUS,/UXMS Hardware: Cisco LAN/WAN switches, Dell/Fujitsu/HP Server and user devices, Dell/Fujitsu/HP Server and SAN More ❯

From real-time data collectors and AI specialists to elite journalists and cloud engineers, our team turns raw numbers into magic. Our tech experts work with advanced cloud solutions, Java, JavaScript, and Python, using AI and machine learning to extract insights and deliver them via APIs. Were looking for a visionary and commercially astute leader to join our Rights team More ❯

Someone Who Has 7+ years of backend engineering experience, ideally in a modern, cloud-based environment. Is proficient in one or more of HubSpot’s backend languages and frameworks (Java, Kotlin, or similar JVM-based languages). Has experience designing and scaling distributed systems, search services, and APIs. Understands how to build reliable, observable systems that can evolve quickly and More ❯

business with the stability of a private equity-backed global partner. Scope of Role We are looking for a Senior Backend Developer with deep C#/.NET expertise (and Java experience preferred) to join our Digital experience monitoring (DEM) and Analytics Platform. Reporting to the Engineering Manager and working within our global engineering organisation, you will help design, build and …/CD and automated testing across unit, integration and end-to-end levels. Experience working in globally distributed teams and collaborating across multiple time zones. Advantageous experience Experience with Java and familiarity with the JVM ecosystem; Spring Boot exposure. Cloud experience with AWS, Azure or GCP; infrastructure-as-code (e.g., Terraform, Helm) and secure configuration management. Performance profiling and tuning More ❯