1 to 25 of 62 Contract Java Jobs in London

Java Developer - Investment Banking (Contract) Location: London (Hybrid) Contract Length: 6 Months Day Rate: Competitive Start Date: ASAP Overview We are partnering with a leading investment bank looking to onboard an experienced Java Developer to join a front office trading technology team on an initial 6-month contract. The role … Linux-based environment Collaborate within Agile teams, contributing to design, code reviews, and best practices Required Skills & Experience Strong hands-on experience with Java (Java 17 preferred) Proven background in investment banking or capital markets Solid experience with trade processing systems Exposure to or direct experience with Trade Runner platforms ...

Hays are now looking for a Java Developer on a 12 month contract. The client requires all candidates to already hold SC Clearance and NPPV3. £428 Inside IR35 Mainly Remote (once a month in Bridgend or Reading) Candidates must hold current NPPV3 & SC Clearance 12 month contract Our client … maintain a critical national policing system used across the UK. This role focuses on Level 3 support, troubleshooting, and ongoing development of legacy Java-based applications in a highly collaborative environment.Working closely with Support, Platform, and DBA teams, you will play a key role in ensuring system stability, implementing enhancements ...

design. Professional experience building and operating backend applications in production environments. Proficiency in at least two or morebackend programming languages such as: Python Go Java Kotlin C# TypeScript/Node.js Ruby Rust Experience designing and consuming RESTful and/or GraphQL APIs. Strong understanding of SQL and database design principles. ...

contribute to capability development across the team. Required Skills & Qualifications: Strong hands-on experience in front-end & application development (React.js/Next.js), backend development (Java or Python), and building secure, scalable APIs and distributed applications. Expertise in data engineering & platforms including SQL, data warehousing, ETL/ELT pipelines, data modelling ...

cloud-based environments Strong focus on automation and continuous improvement Good collaboration and problem-solving skills Technical Experience (some of): Programming/scripting (Python, Java, JavaScript, etc.) CI/CD tools (GitLab, Jenkins) IaC (Terraform, Ansible) Containers (Docker, Kubernetes) Cloud (AWS, Azure, GCP) Observability (Prometheus, Grafana, ELK) Git/source ...

/CD pipelines, implementing Infrastructure-as-Code, and embedding security principles into development from day one. Key Requirements Strong software development background (e.g. Java, Python, C#, etc.) Experience with CI/CD (Jenkins, GitLab), cloud (AWS/Azure/GCP), containers (Kubernetes/Docker), or IaC (Terraform/Ansible) Comfortable ...

security, and operations teams. What You'll Need We are looking for a mix of some or all of the following: Development: Experience with Java, Python, JavaScript, C++, or C#. Cloud & Containers: Cloud-native platforms (AWS, Azure, GCP) and Kubernetes/Helm. CI/CD & IaC: GitLab, Jenkins, Terraform ...

microservice-based systems. Proven capability building and operating production applications with embedded AI or machine learning features. Strong programming skills in languages such as Java, Python, or Node.js, with exposure to modern frontend frameworks where relevant. Solid experience integrating systems via APIs, including REST and event-driven patterns. Hands ...

modelling - able to critique models and drive refactoring - Skilled in product modelling (TMF ODA/SID, canonical data models) - Proficient in backend programming (Python, Java, C++) - Experienced in data persistence across SQL (Postgres, MySQL), NoSQL (Cassandra, MongoDB) and TSDB ( TimescaleDB , InfluxDB , Prometheus TSDB) - Skilled in schema design, optimisation and performance ...

solutions across the full lifecycle Hands-on expertise with Microsoft-based environments (e.g. Azure testing tools, AI platforms) Proficiency in one or more: Python, Java, JavaScript, SQL, or R Proven experience in: AI/Generative AI testing RAG (Retrieval-Augmented Generation) solution validation (e.g. RAGAS framework) CI/CD, DevOps ...

solutions across the full lifecycle Hands-on expertise with Microsoft-based environments (e.g. Azure testing tools, AI platforms) Proficiency in one or more: Python, Java, JavaScript, SQL, or R Proven experience in: AI/Generative AI testing RAG (Retrieval-Augmented Generation) solution validation (e.g. RAGAS framework) CI/CD, DevOps ...

metrics. Technical Environment You will be working within a cloud-hosted environment that includes: AWS (Amazon Web Services) SQL-driven validation and metadata frameworks Java Spring Boot applications AWS Cognito Identity and Access Management (IAM) solutions Government authentication and access management integrations What We're Looking For Essential Skills & Experience ...

teams to deliver reliable, high-quality releases. Troubleshoot infrastructure, application, and deployment issues across complex environments. Your Skills: Ansible Terraform RHEL AWS EKS K18s Java SpringBoot micro services Oracle RDS Benefits Include: Contributory pension scheme Employee Assistance Program Medical and Dental cover 22 days holiday + bank holidays Maternity ...

teams to deliver reliable, high-quality releases. Troubleshoot infrastructure, application, and deployment issues across complex environments. Your Skills: Ansible Terraform RHEL AWS EKS K18s Java SpringBoot micro services Oracle RDS Benefits Include: Contributory pension scheme Employee Assistance Program Medical and Dental cover 22 days holiday + bank holidays Maternity ...

Java Developer - multiple roles £550-570/day Inside IR-35 6 month contract Active SC required Remote with occasional travel to London for client meetings only - expensable We are looking for experienced fullstack Java Software Engineers to support projects across UK Government and Law Enforcement. You'll work … hands-on and focused on building high quality software using modern engineering practices. What you'll do You'll design, build and maintain Java based microservices, applying test driven development and following established engineering standards. You'll work with technologies including Java, Spring Boot, Postgres, Kafka, Docker, React and AWS. ...

Senior Java Backend Engineer (Distributed Systems & Messaging) Location: London, UK (Hybrid) Role Type: Permanent Tech Stack: Java 8+, Concurrency, Apache Kafka/JMS/TIBCO, Spring Boot, Microservices, Low-Latency About the Team & Platform We are building and scaling a complex, high-throughput, electronic trading platform distributed across several international … domain experts, software architects, and DevOps teams within an Agile Scrum framework to continuously roll out platform improvements. What We Are Looking For Core Java Expertise: Strong background in Java 8 or higher, with an elite understanding of multithreading, concurrency models, and non-blocking asynchronous processing. Messaging & Streaming Middleware: Heavy ...

Java Software Developer £600/day Inside IR-35 for an initial 6 months with extension likely London - 3 days per week on site Active SC Clearance essential We're looking for a Java developer to join an established engineering team working on backend services hosted in Azure. The role … focuses on building and supporting Java applications and APIs, using VS Code as a primary development environment. You'll work closely with other engineers across backend, frontend, and DevOps, contributing to cloud-based systems. About the role Java backend development role Focus on services and APIs Cloud-hosted environment ...

public sector governance and assurance processes. Strong technical architecture background - experience designing secure, scalable systems using modern technologies (cloud, open source, and languages like Java, Python, JavaScript or Ruby). Leadership & communication skills - able to guide teams, influence stakeholders, and clearly communicate with both technical and non-technical audiences. Agile ...

Working within a cloud-based, containerised environment (Kubernetes) Contributing to a wider data platform modernisation programme Supporting both batch and streaming workloads Tech: Python, Java, Spark, Airflow, SQL, Cloud (AWS/Azure), Kubernetes (Kafka/streaming nice to have) Details: £700/day (Umbrella) 6-month contract 3 days onsite ...

Minimum 3 years' experience in testing within large enterprise environments. Strong manual testing experience with exposure to test automation. Experience testing enterprise applications, including Java and Oracle-based web applications. Experience supporting Windows 11 application testing within an Evergreen environment. Familiarity with cloud and infrastructure platforms (Azure, AWS and/ ...

with VMware technologies (ESX, vCentre, vCF), Windows/Linux/Mac server management, and containerisation (Kubernetes, VKS). * Strong scripting skills (PowerShell, Bash, Python, Java) and automation experience with tools like Ansible, Terraform, or Puppet. * Knowledge of network configuration, enterprise storage solutions (NetApp, EMC), and security monitoring tools (Elastic SIEM ...

Contract Role - Senior Java Full Stack Developer – London/Hybrid – 10 months initial – Inside IR35 Role Overview: Job Title: Senior Java Full Stack Developer Location: Hybrid – 3- 4 days onsite per week in London Contract Type: Contract Duration: 10 months initial Rate: £675.11 per day PAYE … Umbrella Sector: Banking We are looking for a Java Full Stack contractor with strong engineering experience across backend, frontend, and delivery automation, with a particular emphasis on CI/CD automation and system integration . This role suits someone who is hands-on in Java full stack development ...

Backend Java Developer + 6 month initial contrac+t + Fully remote - occasional office visit + SC Cleared + £530 per day Inside IR35 Key Skills: + Spring Framework + Docker/Kubernetes + SC Cleared Java Software Engineer We are looking for a skilled Java Software Engineer to join … development team and help build high-quality, scalable applications. Key Skills & Experience: Strong commercial experience with Java development. Hands-on experience with the Spring Framework (or equivalent enterprise frameworks). Solid understanding of software design patterns and the ability to apply them appropriately. Excellent knowledge of modern software development processes ...

Windows Server 2k8/2k16/2k19. Infrastructure: VMWare ESX v6, Nginx, Apache Tomcat, Elasticsearch. Automation: Bash scripting, CI/CD pipelines. Desirable: Java SE 8, Python, Ansible, Terraform, AWS, IBM Initiate, GIS tools. Interested? Please apply with your updated CV and clearance details. ...

more of: PowerShell, Shell, Python, SQL Jenkins/Ansible/Artifactory pipeline expertise Good server, network and firewall infrastructure understanding Application support experience with Java, C++, .NET knowledge Project management skills to deliver medium scale projects Additional skills (nice to have): Ability to tune operating systems platforms for optimum performance ...