1 to 25 of 46 Contract Java Jobs in London

mentoring to other engineers. Technical Skills We are interested in candidates with experience across some of the following: * Software development using C++, C#, Python, Java or JavaScript * CI/CD using Jenkins, GitLab or similar technologies * Git and GitOps * Terraform, Ansible, Chef or Puppet * Kubernetes and Helm * AWS, Azure ...

/'25 or later. Pega Constellation experience. Pega DX API experience. Pega GenAI Blueprint experience. Experience delivering applications on Pega Cloud. Knowledge of Java, JavaScript, SQL and related web technologies. Experience with automated testing and Pega testing capabilities. Cloud platform experience, including AWS or Azure. Application modernisation and legacy migration ...

traded commodity products. Experience with commodity scheduling, logistics, inventory or physical settlement processes. Experience with market data, risk and P&L integration. Experience with Java, Spring/Spring Boot, REST APIs, Kafka or similar enterprise technologies . CI/CD and DevOps experience. Previous experience within a major investment bank ...

Application Development & Integration Full-stack software engineering expertise across Java, Python, .NET, JavaScript/TypeScript, Node.js, React, Angular, and modern web technologies. Deep experience in API development, Microservices, Event-Driven Architectures, Enterprise Integration, and Distributed Systems design. Cloud, Platform Engineering & Infrastructure Expertise in Azure, AWS, and GCP with strong knowledge ...

frameworks such as: Lang Chain Lang Graph CrewAI AutoGen Semantic Kernel Software Development Strong programming expertise in: Python JavaScript/TypeScript C# or Java Experience building RESTful APIs and microservices. Knowledge of software design patterns and scalable application architecture. AI Application Development Retrieval-Augmented Generation (RAG) Vector databases: Pinecone ChromaDB ...

Senior Java Architect - Payments Location: London (Hybrid) Contract: 6 Months Initial Pay Rate: £550-£600 - Outside IR35 About the Role We're supporting a global financial services organisation undergoing a significant banking transformation programme. As part of this journey, they are building next-generation banking capabilities and modernising core platforms … that support cross-border payments, settlement, reconciliation, and banking operations. We are seeking an experienced Java Engineering Architect to provide technical leadership across backend engineering, architecture, and delivery. This role will play a key part in shaping modern banking platforms built on cloud-native technologies, microservices, event-driven architecture ...

team. Improving the performance, resilience and maintainability of existing platforms. Key Skills 5+ years of commercial software engineering experience. Strong backend development experience in Java + Spring environments. Experience working with Python and/or the Microsoft technology ecosystem. Strong understanding of distributed systems and scalable application design. Experience designing ...

Senior Java Architect | Banking, Payments & AI Engineering Location: London (Hybrid) Role Type: Contract Rate: Up to £600 a day (Outside IR35) We're seeking an experienced Java Architect to play a key role in a major banking transformation programme, helping to deliver enterprise-scale banking and payments platforms with … design and delivery of scalable, secure and resilient backend platforms while providing technical leadership to offshore development teams. Key responsibilities include: Designing enterprise-grade Java-based banking and payments solutions Leading offshore Java development teams Defining microservices and event-driven architectures Delivering payment solutions across SWIFT, ISO 20022, settlement ...

showcasing their talents, skills, and unique experience in an inclusive environment that helps them thrive. Job title: Senior Full Stack Developer (Front End - Java/Angular/Solidity) Location : London (5 days per week onsite) Contract: 12 months with possible extension Rate : £700 - £750 inside IR35 Overview We are looking … enjoy working across the full technology stack, delivering scalable web applications, cloud-native services, and modern user experiences. The successful candidate will have strong Java and Front End development experience, a passion for software engineering best practices, and experience working within Agile delivery teams. Key Responsibilities Design, develop and maintain ...

Hays are now looking for a Java Engineer/AWS Serverless Engineer (SC Cleared ) for one of our local clients: £428 p/d Inside IR35 Remote (occasional travel to London) 6 month+ contract Candidates must hold current SC Clearance Role Overview We're looking for a hands-on Java … Engineer to develop and support cloud-native services within an AWS environment. You'll work on Java microservices, REST APIs and serverless components, contributing across the full software development lifecycle. Key Responsibilities Develop and maintain Java-based microservices and APIs. Build and support AWS serverless solutions using Lambda. Design ...

work independently, communicate complex technical ideas clearly, collaborate effectively with stakeholders and champion better ways of working. Nice to Have Experience with Docker, Java/Scala, Kafka, Pulsar, Azure Event Hub, Collibra, Apache Iceberg, Apache Arrow, PySpark or AI engineering technologies such as Snowflake AI, LangChain, LlamaIndex or Pinecone would ...

with Git, CI/CD and modern software delivery practices Advocate of TDD and collaborative engineering approaches Desirable Experience Ability to read and understand Java Kubernetes experience AWS cloud exposure Reasonable Adjustments: Respect and equality are core values to us. We are proud of the diverse and inclusive community ...

Java Software Architect 3-5 Month contract - Inside IR35 - up to £620 per day London based - hybrid working - 1 day a week onsite Insurance sector Java Software Architect Role Overview We are seeking a hands-on Java Software Architect to lead the assessment, modernisation, and migration of enterprise Java applications. … risks, and supporting project planning and implementation from both architectural and engineering perspectives. Key Responsibilities Lead architecture assessment, modernisation planning, and migration of enterprise Java applications. Define and drive the technical architecture and implementation approach for complex Java-based enterprise applications. Assess application dependencies, frameworks, integrations, infrastructure components, and security ...

implementation work while maintaining strong stakeholder engagement. Producing and maintaining technical documentation. Supporting the continuous improvement of engineering capability and delivery processes. Essential Skills Java & Software Engineering Strong commercial Java development experience. Spring Boot. Maven. REST and SOAP services. Experience delivering large-scale enterprise systems handling high transaction volumes. Strong …/AWS MSK. Secrets Management. Authentication and Authorisation. Certificate Management. Ideal Candidate You'll be an experienced Principal Developer with a strong background in Java and AWS, capable of leading complex technical delivery while remaining hands-on. You'll have experience working on large-scale distributed systems, influencing architectural decisions ...

Application Development & Integration Full-stack software engineering expertise across Java, Python, .NET, JavaScript/TypeScript, Node.js, React, Angular, and modern web technologies. Deep experience in API development, Microservices, Event-Driven Architectures, Enterprise Integration, and Distributed Systems design. . click apply for full job details ...

Copilot & Claude Code * OpenAI, Azure OpenAI & Anthropic Claude * LLMs & Generative AI * LangChain, LangGraph, CrewAI, AutoGen or Semantic Kernel * Python, JavaScript/TypeScript, C# or Java * RAG & vector databases * REST APIs & microservices * AI agents and prompt engineering For more information or to apply directly, please email I review applications daily ...

great opportunity to support nationally critical work with a reputed client. You'll join a team focused on environment management, development and maintenance, and Java feature development and testing-making a real impact for public sector infrastructure. What you'll be doing: Configure and support infrastructure, middleware, and applications using ...

event-driven architecture Messaging technologies such as IBM MQ, AMPS or Tibco EMS CI/CD, DevOps and automated testing frameworks Desirable Skills Java development experience FDA expertise FTW implementation or development experience Experience within large-scale global investment banking environments ...

Previous experience delivering within central government organisations. Experience supporting health, benefits or citizen-facing services. Knowledge of AWS analytics and reporting services. Exposure to Java-based application environments and associated data structures. ...

+ deployment. Strong background in Software Architecture, systems engineering, distributed systems or complex cloud-native platform delivery. Programming languages: Go, Rust, C/C++, Java, Python. Desirables: AWS Solutions Architect Associate certification, Telecoms, AIOps, Network Ops, RAN/Core Analytics, Data Engineering, anomaly detection, RCA, lakehouse/agent orchestration patterns. ...

Java EngineerJava Engineer | esynergy | London Hybrid Do you enjoy building scalable, customer-facing applications using Java, microservices and modern cloud technologies? Role overview We are looking for an experienced Java Engineer to join one of our strategic programmes, where esynergy is delivering a major piece of work for a FinTech … client. You'll be working predominantly across backend systems, helping to buildand evolve large-scale, customer-facing applications using Java, Spring Boot and microservices. For some positions within the programme, we are also looking for full-stack engineers with React.js experience. Backend engineering remains the primary focus. Essential Skills/ ...

existing supplier. The deal covers the Borders & Trade element of the ITT, providing environment management, I&T development and maintenance, and Java feature development and testing capabilities. The team will work alongside the existing CDS programme to deliver nationally critical infrastructure. What you'll bring: UK Citizen with 5 years ...

DevOps Engineer to join a major digital transformation programme for a Central Government client . You will work within a cloud-native AWS and Java environment , helping to build, maintain and optimise the infrastructure, deployment pipelines and cloud platforms underpinning critical public-facing digital services. The successful candidate will have … cloud environments . Build and support CI/CD pipelines to enable reliable and efficient software delivery. Automate infrastructure provisioning, configuration and deployment. Support Java-based applications and microservices . Implement monitoring, alerting and logging solutions to maintain platform reliability and performance. Support platform security, compliance and operational resilience. Troubleshoot ...

Integration Architect/Senior Integration Architect - JAVA/AWS (ESSENTIAL) £600 Pay - Outside IR35 - 4 Days per week on site in London Bridge 6 month initial contract We've partnered with a genuinely exciting organisation who are building a greenfield Bank, as part of this they are implementing a whole … across teams Design and deliver event-driven, API-first, and messaging solutions (NATS, REST) Lead end-to-end integration delivery, including hands-on development (Java/Spring) Ensure scalable, cloud-native solutions on AWS Produce architecture artefacts (blueprints, contracts, ADRs) Guide teams on best practices, API governance, and event design ...

leading organisation within the Energy & Utilities sector is seeking an experienced Java Application Developer to support the delivery of business-critical applications within a modern cloud-native environment. £520 p/d Inside IR35 Mainly Remote (1 day a week in London, the rest is WFH) 6 month+ contract … role you will design, develop and support scalable backend services using Java, working within a microservices and event-driven architecture. Key responsibilities Develop backend services using Java. Build and support event-driven solutions using Apache Kafka. Deliver scalable microservices-based applications. Participate in design, development, testing and deployment activities. Collaborate ...