1 to 25 of 65 Contract Java Jobs in London

Senior Backend Java Engineer Rate: £500 - £575 a day pay inside Location: Remote, with expectations to attend onsite meetings when required (1-2 a month) Duration: 6 months+ We are looking for a hands-on Senior Backend Java Engineer with recent experience building, testing, and deploying production-grade APIs … whose recent experience is mainly support, coordination, architecture-only, or line management. Essential skills and experience Strong hands-on commercial coding experience with modern Java (Java v17 min, v21 LTS or newer preferred) Strong experience with Spring Boot Experience building REST APIs/microservices from scratch Strong testing skills using ...

remote basis. This is an exciting opportunity to work on innovative projects within a collaborative environment. Required Skills: Deep hands-on experience with Java and Spring Boot (Web Services, Spring Security, etc.) Strong knowledge of PostgreSQL (Postgres) - including schema design and query optimization Solid understanding of object-oriented programming principles ...

Java Backend Developer (Booking & Messaging) Rate: £625/day (Inside IR35) | Duration: 6 Months | Location: London (Hybrid) The Role Join a high-performance eBond Booking and Messaging team managing a complex trading platform. You will build and adapt trading workflows , ensuring seamless connectivity to external exchanges and managing trade booking … systems. The environment features a modern microservices architecture , reactive programming, and a fully automated CI pipeline with weekly releases. Technical Profile Java Expert: Java 8+, Multithreading, and RESTful Webservices. Messaging Pro: Deep knowledge of Pub-Sub and brokers like 60East AMPS , Kafka, or RabbitMQ. Reactive & Agile: Experience with Functional Reactive ...

influencing engineering best practice. Essential Skills & Experience Strong background in automation testing for microservices based architectures. Hands on experience building automation frameworks using Java or similar languages. Solid experience testing REST APIs, backend services, and service to service integrations. Proven experience validating data engineering pipelines (ETL/ELT, batch jobs ...

influencing engineering best practice. Essential Skills & Experience Strong background in automation testing for microservices‑based architectures. Hands‑on experience building automation frameworks using Java or similar languages. Solid experience testing REST APIs, backend services, and service‑to‑service integrations. Proven experience validating data engineering pipelines (ETL/ELT, batch jobs ...

analytical, and problem-solving skills Experience working closely with development teams across the SDLC Desirable Skills Understanding of Internal Developer Platform/IDP concepts Java application experience, ideally Spring Boot or Quarkus Familiarity with Gradle Familiarity with Node.js and ReactJS applications Experience integrating testing and security tools into CI/ ...

Java 8 Software Engineer | £500 – £550 | Inside IR35 | 6 Months | Hybrid Remote We’re recruiting for experienced Java Engineers with strong experience working with Legacy Java versions (Ideally Java 8). This 6-Month contract is determined as Inside IR35 and is offered on a Hybrid remote basis requiring …/2 days per week of onsite work in Swindon or London. Key Requirements Strong commercial experience with Java 8 or similar legacy Java frameworks Solid skills in SQL, Spring Boot, and Hibernate development practices Proven ability to build microservices and reliable RESTful APIs Hands-on experience applying ...

deliver a stable & reliable platform under all necessary controls Knowledge, Skill and Experience · 8+ years' experience in commercial software development. · Strong core Java and backend engineering skills, with experience designing, building and maintaining reliable, scalable applications. · Good SQL skills and experience working with relational databases. · Experience with test-driven development ...

Experience : Extensive experience in designing enterprise-scale CI/CD solutions, with a focus on GitLab. Hands-on experience in supporting build pipelines for Java, C#, JavaScript, and Python is essential. Cloud & Containerization Expertise : Proven ability to deliver containerized and cloud-ready applications, with experience in integrating CI/ ...

Senior Java Engineer (AWS, REST, SOAP) - Hybrid - Sussex Daily rate: £500 - £700 (inside IR35) Duration: 6 months Hybrid: 2 days per week (Tues + Wed) Start: ASAP My new client is looking for a highly skilled Senior Java Engineer to join their engineering team. The ideal candidate combines deep technical … architectures, contribute to API and microservices development, and help drive best practices across the engineering organisation. Key Responsibilities Design, develop, and maintain high-quality Java applications using Spring Boot. Build and optimise RESTful APIs and contribute to GraphQL service development. Develop cloud-native solutions using AWS services such as Lambda ...

contract-driven environment with high interaction and accountability. Hands-on development using modern front-end and back-end technologies (e.g. TypeScript, React, Node/Java, APIs, databases). Strong experience building and operating solutions in cloud environments (primarily AWS), using infrastructure as code, CI/CD pipelines, and modern DevOps ...

PostgreSQL or comparable relational databases. Experience with API and application security. Practical knowledge of Python, including frameworks such as FastAPI. Practical knowledge of the Java stack. Proven experience with deploying and managing Azure cloud services. Experience deploying and operating containerised workloads in Kubernetes. Experience writing and maintaining CI/ ...

Software Engineer - Java 21, Springboot Up to £550 per day (Inside IR35) London/Remote 6 months My client is an instantly recognisable consultancy who require a strong Backend Software Engineer with deep expertise in Java (Spring Boot) to join a large-scale, business-critical microservices programme. All candidates must … eligible for Security Clearance (SC) Key Requirements: Proven experience working as a Java Software Engineer on large microservice architectures Strong experience building scalable backend and RESTful services using Java (Spring Boot) Ideally Java v21 (or very recent versions) Postgres (or other relational SQL databases) with a solid understanding of schema ...

operated large-scale systems end-to-end, not those with superficial exposure or purely design-focused experience. Candidates must have strong experience of Java Full Stack, React, Kubernetes & Docker. Experience in building responsive, component based user interfaces using modern front end frameworks. Hands on expertise in API design and development ...

systems) Experience working within or alongside network engineering or infrastructure operations teams Programming experience in at least one language such as Python, Go, or Java Strong understanding of SLOs, SLIs, and modern reliability engineering practices Strong analytical and problem-solving skills with a focus on automation and system reliability Desirable ...

using Python for analytics, tooling, or supporting components alongside core trading platforms. Background in trading, risk, or financial markets technology is beneficial. Exposure to Java or other JVM-based languages is an advantage. Why Work Here? You will join a technology-focused environment where high-performance, low-latency engineering ...

user-centric digital services in line with public sector standards. Essential Requirements: Strong commercial experience developing native Android applications using Kotlin (and/or Java) Proven Central Government project experience (essential) Good understanding of Government Digital Service (GDS) principles and accessibility standards Experience working in agile environments (Scrum/Kanban ...

with Real Time or streaming data environments Proficiency in systems-level programming (C++, Go, or Rust) alongside a higher-level language such as Python, Java, or TypeScript Exposure to OpenTelemetry or similar observability frameworks Understanding of SLI and SLO modelling in low-latency or high-availability environments Experience building ...

across modern AWS infrastructure, React front ends, and advanced LLM/RAG workflows.What you'll be doing Building and enhancing cloud-native applications using Java and/or Python Developing modern React front-end solutions Designing scalable systems on AWS Delivering AI-powered features using LLMs, semantic search … engineering and product stakeholders on a flagship transformation programme What we're looking for 8+ years' software engineering experience Strong hands-on experience with Java and/or Python Proven expertise with AWS cloud technologies Full stack engineering capability, ideally including React Experience building secure, production-grade distributed systems Strong ...

Linux Kernel instrumentation or performance engineering Low-latency or high-performance distributed systems Strong systems programming background (C++, Go or Rust preferred) Python/Java for higher-level services Kubernetes/cloud-native infrastructure Observability concepts (metrics, logs, traces, SLI/SLOs) Contract details Hybrid working (London) Inside IR35 Long ...

interfaces. Utilise Workday Studio, Workday Web Services (WWS), EIB, and Cloud Connect (CCW, PECI) for integration tasks. Apply coding skills such as XSLT, XML, Java, SQL, and other integration technologies to build scalable and efficient custom integrations. Ensure accurate and seamless data flow between Workday and other enterprise systems. Identify ...

Days Onsite Job Type: Contract & Fixed term Employment Domain: Banking/Finance/Trading Market Risk Skills: SRE experience with Python-based applications(not Java) Exposure to cloud technologies Familiarity with Athena ecosystemor similar (SecDB, Quartz) Trade Lifecycle/Market Risk/Risk platform experience Experience:Minimum 8+ years ...

IDAM Back-end Java Developer - SC Cleared Rate: £500 - £535 a day IR35 : Inside IR35 Location: Remote within the UK Duration: Initially 6 months Clearance: Active SC Clearance required You will join a global IT consultancy who are delivering digital transformation to public sector body. They are looking … back-end Java Developer with proven IDAM (Identity and Access Management) experience. You will be part of a continuous improvement squad delivering enhancements and new features alongside BAU work (i.e. incidents and support maintenance activities). In addition, you will be involved in helping our client transform their IDAM service ...

Java Engineer - Payments/IFT London - 2 days in the office 6 Months Contract Inside IR35 £500 a day A top tier consultancy firm is looking for an experienced Java Engineer with a background in payments to contribute to a large payment modernisation programme. You will be instrumental in deploying … compliance with ISO 20022 standards. Essential Skills 5 + years of hands on experience in a Java11 and spring boot 5 + Years in Java Engineering. Proven track record delivering large-scale systems for major banking clients. Minimum of 3 years' hands-on experience specifically with ICON IPF (Instant Payments ...

Java Engineer - Payments/IFT London - 2 days in the office 6 Months Contract Inside IR35 £500 a day A top tier consultancy firm is looking for an experienced Java Engineer with a background in payments to contribute to a large payment modernisation programme. You will be instrumental in deploying … compliance with ISO 20022 standards. Essential Skills 5 + years of hands on experience in a Java11 and spring boot 5 + Years in Java Engineering. Proven track record delivering large-scale systems for major banking clients. Minimum of 3 years' hands-on experience specifically with ICON IPF (Instant Payments ...