25 of 25 Contract Java Jobs in London

Title: Java Modernization Technical Architect Engagement Type: Contract (Initial 6 Months, potential for extension) Location: London, UK (Hybrid) Clearance Requirement: Active UK Government Security Check (SC Clearance Required) Role Overview We are seeking an experienced Java Modernization Technical Architect to lead enterprise-scale cloud transformation initiatives. In this role … will define and execute architecture migration strategies for legacy Java applications moving to Microsoft Azure . You will serve as the technical authority guiding cloud-native deployment, application remediation, containerization, and platform modernization across complex enterprise environments. Key Responsibilities Architecture & Strategy: Lead end-to-end architecture design and migration strategies ...

daily rate up to £600 2-3 days in office in London Our client is one of leading consulting companies. They are looking for Java Full stack developer to work for their end client. Developer will design, develop, and maintain scalable enterprise applications that support critical business functions across … firm. The ideal candidate should have strong Back End expertise in Java and modern frameworks, along with solid Front End development skills and experience building secure, high-performance applications in cloud-enabled environments. Key Responsibilities: - Design, develop, test, and deploy full stack applications using Java - Must to have UK Broker ...

Duration6monthscontractinsideIR35,dailyrateupto£600 2-3daysinofficeinLondon Ourclientisoneofleadingconsultingcompanies.TheyarelookingforJavaFullstackdevelopertoworkfortheirendclient. Developerwilldesign,develop,andmaintainscalableenterpriseapplicationsthatsupportcriticalbusinessfunctionsacrossthefirm.TheidealcandidateshouldhavestrongbackendexpertiseinJavaandmodernframeworks,alongwithsolidfrontenddevelopmentskillsandexperiencebuildingsecure,high-performanceapplicationsincloud-enabledenvironments. KeyResponsibilities: -Design,develop,test,anddeployfullstackapplicationsusingJava -MusttohaveUKBrokerdealerandcapitalmarketexperience -BuildrobustRESTfulAPIsandmicroservicesforhigh-volume,low-latencysystems. -Collaboratewithproductowners,businessanalysts,architects,andQAteamstodeliverhigh-qualitysolutions. -Developresponsive,reusableUIcomponentsandintegratethemwithbackendservices. -Participateinarchitecture,codereviews,andtechnicaldesigndiscussions. -Optimizeapplicationperformance ...

Clearance is mandatory for this position. Candidates must hold current and transferable SC Clearance. Key Responsibilities Design, develop and maintain back-end services using Java and TypeScript . Build and support RESTful APIs and micro services using Express.js and related technologies. Deliver secure, scalable and high-performing software solutions within … mandatory). Proven experience delivering software solutions within Defence, Government, National Security or other highly secure environments . Strong commercial experience developing applications using Java . Strong experience developing services and APIs using TypeScript and Express.js . Experience building and supporting REST API and micro service-based architectures. Strong understanding ...

following domains: Securities Settlements & Clearing Asset Servicing/Corporate Actions Transaction Management Cash Management & FX Tax Processing Strong software engineering background with experience of: Java Spring/Spring Boot Oracle, SQL Server or PostgreSQL Proven experience designing: Microservices architectures Event-driven systems Domain-driven designs Distributed platforms Experience with Kafka ...

technical stakeholders within an Agile environment. Essential Skills & Experience Strong commercial experience as a Full Stack Software Engineer. Development expertise in: TypeScript Java Ruby Experience designing, building and consuming APIs. Strong understanding of modern software engineering practices. AWS cloud experience. Experience working within Agile delivery teams. Excellent communication and stakeholder ...

Gateway, DynamoDB, Aurora and S3. Experience with SQL Server, Sybase and PostgreSQL, including Aurora. Experience supporting or developing applications using Unix/Linux, Java, C#/.NET and Python. Strong communication skills, with the ability to engage technical and non-technical stakeholders. A calm, decisive approach under pressure, with ...

equivalent. * Public and private CA integration; HSM and key-management integration; secure key generation, storage, backup & recovery. * Certificate deployment across IIS, Apache, NGINX, Java, databases, load balancers, firewalls, proxies, network appliances and enterprise applications. * ACME, SCEP, EST, REST API & agent/connector-based certificate automation. * Operational monitoring, expiry alerting, service ...

team designing, developing and maintaining secure, scalable software systems within complex, mission-critical environments. Key Requirements: Active SC Clearance (essential) Strong software development experience (Java, Python, C# or similar) Experience working in Agile environments Knowledge of cloud technologies (AWS, Azure or GCP) Understanding of secure coding and software engineering best ...

organisations. Essential Skills & Experience Proven experience operating as a Lead Engineer or Principal Engineer within complex delivery environments. Strong experience developingbackend services using: Kotlin Java Spring Boot Python FastAPI Frontend development experience using: TypeScript Node.js Express Experience working within cloud-native environments and modern software delivery practices. Ability to operate ...

Must Have - Backend: Strong Java/Python skills with Spring and Spring Boot - Frontend fundamentals: Strong HTML5, CSS3, and JavaScript (ES6+) - Modern frontend framework: Hands-on experience with React Js - Component architecture and state: Component-based design and state management (React Hooks, Redux, Context, or NgRx) - Responsive UI: Building responsive ...

more custody domains , including Securities Settlements, Asset Servicing (Corporate Actions), Transaction Management, Tax Operations, or Cash & FX Processing Strong software engineering foundation, ideally across Java, Spring Boot, Oracle, and SQL technologies Kafka experience Strong stakeholder management experience Financial services background is highly desired If you're interested in this role ...

Capital Markets business users. Technical Skills Strong experience with several of the following: * SQL* Oracle/relational databases * Unix/Linux * Shell scripting * Python * Java * XML/JSON * REST APIs/integration technologies * Git or equivalent source-control tools * CI/CD and DevOps processes * Batch scheduling/enterprise schedulers ...

Responsibility Segregation. Event Sourcing: Understanding and practical experience of event-sourced architectures. Backend Development: Commercial experience with at least one of the following: .NET, Java or Python. Azure Service Bus: Experience implementing messaging and asynchronous communication between services. API Development: Experience designing, developing and integrating backend APIs. Distributed Systems: Understanding ...

enablement Awareness of data governance, ethics and responsible AI Eligibility for Enhanced DBS and BPSS clearance Desirable: Experience with PyTorch, TensorFlow, LangGraph, R or Java Experience with Spark, Databricks or similar distributed data platforms, and exposure to MLOps Experience of AWS, Azure or GCP AI/ML services, ideally with ...

systems Required Experience Active DV Clearance (MOD DV accepted) Proven Test Automation Engineering experience Strong Python development skills PowerShell scripting C# and/or Java Test framework development and maintenance Automated functional and integration testing ISTQB certification or relevant degree Experience within secure, defence or government environments What ...

building mission-critical airline operations software, from load optimisation and weight and balance to regulatory-compliant load sheets. Today the team works mainly in Java microservices with a TypeScript and Angular front end, but engineers move between languages as projects change, so we are looking for engineers who think … Engineering, Information Systems or a related field, plus 3+ years in software development within Agile product teams (5+ years preferred) Strong commercial experience in Java or a comparable language, plus production experience in at least one other, for example TypeScript, Kotlin, Python, Go or C# Comfortable working across back ...

London | 3 Days Onsite | 52-Week Contract | Rate TBC Are you an experienced Java Full Stack Developer with strong Spring Boot expertise and active SC clearance We're looking for a talented Senior Java Developer to join a high-performing engineering team, designing and delivering scalable, high-performance software solutions. … solution design and work alongside experienced engineers on complex software development challenges. What You'll Be Doing Design, develop and enhance enterprise applications using Java Full Stack technologies and Spring Boot . Build scalable, secure and high-performing software solutions. Collaborate with cross-functional teams to deliver seamless system integration. ...

relevant experience, including part-time roles A grounding in operating systems, PC and electronic hardware, networks and cloud Some scripting or programming in Python, Java, SQL or similar A clear, customer-focused approach and an understanding of how much customers rely on the service you support Desirable: electro-mechanical devices ...

relevant experience, including part-time roles A grounding in operating systems, PC and electronic hardware, networks and cloud Some scripting or programming in Python, Java, SQL or similar A clear, customer-focused approach and an understanding of how much customers rely on the service you support Desirable: electro-mechanical devices ...

workflows and enterprise applications within a large-scale financial services environment. The role will involve designing and building workflow solutions using Camunda 8, developing Java-based Back End services, creating React-based user interfaces, and contributing to a modern cloud-native, DevOps-driven delivery environment. Key Responsibilities Develop lending origination … workflows using Camunda 8 for process orchestration. Build and maintain Java-based Back End services and integrations. Develop React-based Front End applications for user task management and workflow interaction. Implement service-task-driven integrations using Java job workers. Work with SQL databases to support application development and integration. Participate ...

Synergize Consulting is seeking two Java Developers to join a critical central government programme, delivering technology that supports customs compliance, reduces fraud and protects tax revenues. We welcome applications from experienced developers at different levels. Candidates will be assessed against SFIA 4 or SFIA 5, based on their skills, experience … customs and border systems, helping deliver a reliable, scalable service for traders, marketplaces and carriers. Your responsibilities will include: Developing secure, maintainable software using Java, JSON, JSLT and Drools. Contributing to systems design, prototyping and integration. Writing clean, reusable, well-tested code using a test-driven approach. Improving development processes ...

Software Developer (Go) 6month contract insideIR35 Finance sector Rate: £40 p/h insideIR35 Location: London, hybrid working 3days in office. Skills: Go, Java Git, REST, Jenkins, NoSQL, Postgres We're looking for an enthusiastic, diligent Software Engineer to work with one of our well known client's fintech project. … ideal candidate will have 4yrs+ experience in backend development with ideally 2yrs+ of experience Go experience, Java is also beneficial. The platform you'd be working on is built using modern tools such as Go, Java, Kafka and Docker. You'll be you will be building and enhancing features ...

Position: Java Low Latency Engineer Location: London, UK (Hybrid-3 days from office) Long term contract position Role Overview We are looking for an experienced Java Low Latency Engineer with strong expertise in Java performance optimization, JVM tuning, and high-performance system development. The ideal candidate will have experience building … event-driven, concurrent systems designed for low-latency and high-frequency environments Required Skills & Experience Strong Core Java and JVM performance tuning expertise. Excellent knowledge of Data Structures and Algorithms. Experience with concurrency, multithreading, and low-latency system design. Knowledge of GC, JNI, Java Unsafe, and JNR-FFI. Strong understanding ...

Cato Cloud Engineer 6-month contract – Remote The Cato Cloud Engineer Role: VIQU are seeking a Cloud Engineer to join a central Cloud Engineering team, helping enhance and automate cloud infrastructure while supporting cloud migration ...