27 java developer jobs found

We have an exciting opportunity for experienced Java developers to join our team! You will have a passion for software development and an excellent understanding of how to define and deliver solutions iteratively and collaboratively. You will be involved in all areas of delivery, with the technical gravitas to mentor and inspire the development team; playing an integral part in helping them continuously improve by sharing your own knowledge, experience and insights. You will be confident in challenging business requirements to ensure you are continuously delivering the best possible outcome, harnessing innovation and driving the adoption of new technologies to deliver business value. Your vision and ambition will contribute to shaping our online technology roadmap, influencing our future technical direction and balancing passion with precision to deliver exceptional online service and solutions for our customers.   This is an initial 12 month contract that sits...

Java Developer / Software Engineer - Design & Build Fintech Product / Banking - Spring Boot, Claude/Codex also essential. *YOU MUST HAVE BEEN INVOLVED IN DESIGN, ARCHITECTURE AND BUILD OF ANY FINTECH PRODUCT* for e.g. Current Account OR SAVINGS OR ISA's OR Fixed Term Deposits, Lending, Mortgages etc. £600-£650/DAY OUTSIDE IR35 PAY. Our Fintech Challenger Bank client based in Central London seeks a dynamic, eager to learn and technically astute Java Software Engineer who has extensive experience in Designing & Building a Payment Product *NOT PAYMENT PLATFORM* so the ideal candidate will come from for e.g. a Challenger Bank or Fintech Payment Product Company. STRONG skills in Java, Spring Boot, AI (Claude or Codex), working in a Fintech Payment domain. YOU WILL NOT BE CONSIDERED IF YOU DO NOT HAVE FINTECH & DESIGN & BUILD PAYMENT PRODUCT EXPERIENCE WITH JAVA, SPRING & STRONG AI! Our client is hiring a hands-on SENIOR Software Engineer / Java...

JAVA DEVELOPER – LONDON – CONTRACT OUTSIDE IR35  – FINTECH In London WE ARE:  At Adaptive, we are a financial consulting firm that partners with capital, commodity, and digital market participants. We value differentiation through technology. Our experienced teams design and deliver complex front-office technology solutions using our proven accelerators to create long-term competitive advantage. Our clients include the world’s leading investment banks, investment managers, fintech, and capital market service providers. With a global reach with offices in London, New York, Barcelona, Manila, and Montreal, we have a proven track record of delivering powerful, elegant, and intuitive trading technology solutions. We are now looking for a Java Developer to provide services on an exciting project!  The service provision will require:  Solid JVM skills with strong design patterns. Ability to solve complex...

Hays are now looking for a Senior Java Developer for one of our local clients: 3322 p/d Outside IR35 3 days p/w in Glasgow, rest is WFH 6 month contract+ The Senior Java Developer will have strong Back End Java skills and React/JSF Front End experience to deliver modern web applications in an Agile environment. What you'll be doing Developing and enhancing Java-based applications and services Building and supporting Front End components using React and JSF Delivering REST APIs and microservices Working closely with product, test and delivery teams Contributing to CI/CD, testing and continuous improvement What we're looking for Java 8+ Spring Boot/Spring MVC REST APIs and microservices JSF React JavaScript, HTML5, CSS3, SCSS JPA, JSP, Servlets, JDBC Git Jenkins, Maven, JIRA CI/CD experience TDD and automated testing Web Accessibility (NVDA, WAVE, Accessibility Insights) Agile/Scrum experience Technical leadership and client-facing experience...

Senior / Lead Software Engineer (Java) - o/s IR35 - Hybrid (2 dpw in office) A large retailer urgently seeks an experienced Senior Software Development Engineer to take a lead role in the design, development and support of scalable, cloud-native Java applications Working in an Agile, DevOps environment, you'll build microservices, APIs and event-driven solutions while collaborating with engineers, data scientists and operations teams to deliver high-quality software. The role is outside IR35 and requires 2 days per week in the office. Responsibilities include: Design and develop scalable Java applications and microservices Build and maintain cloud-native solutions using Azure Improve system performance, reliability and scalability Develop APIs and event-driven services with Kafka Mentor engineers and promote engineering best practices Support software throughout its full lifecycle in a CI/CD environment Essential Experience Experience of designing and...

WE ARE: At Adaptive, we are a financial consulting firm that partners with capital, commodity, and digital market participants. We value differentiation through technology. Our experienced teams design and deliver complex front-office technology solutions using our proven accelerators to create long-term competitive advantage. Our clients include the world's leading investment banks, investment managers, fintech, and capital market service providers. With a global reach with offices in London, New York, Barcelona, Manila, and Montreal, we have a proven track record of delivering powerful, elegant, and intuitive trading technology solutions. We are now looking for a Java Developer to provide services on an exciting project! The service provision will require: Solid JVM skills with strong design patterns. Ability to solve complex technical challenges, especially in cloud-based environments and by using event driven architecture patterns. Experience of the...

WE ARE: At Adaptive, we are a financial consulting firm that partners with capital, commodity, and digital market participants. We value differentiation through technology. Our experienced teams design and deliver complex front-office technology solutions using our proven accelerators to create long-term competitive advantage. Our clients include the world's leading investment banks, investment managers, fintech, and capital market service providers. With a global reach with offices in London, New York, Barcelona, Manila, and Montreal, we have a proven track record of delivering powerful, elegant, and intuitive trading technology solutions. We are now looking for a Java Developer to provide services on an exciting project! The service provision will require: Solid JVM skills with strong design patterns. Ability to solve complex technical challenges, especially in cloud-based environments and by using event driven architecture patterns. Experience of...

Senior/Lead Software Engineer (Java) - o/s IR35 - Hybrid (2 dpw in office) A large retailer urgently seeks an experienced Senior Software Development Engineer to take a lead role in the design, development and support of scalable, cloud-native Java applications Working in an Agile, DevOps environment, you'll build microservices, APIs and event-driven solutions while collaborating with engineers, data scientists and operations teams to deliver high-quality software. The role is outside IR35 and requires 2 days per week in the office. Responsibilities include: Design and develop scalable Java applications and microservices Build and maintain cloud-native solutions using Azure Improve system performance, reliability and scalability Develop APIs and event-driven services with Kafka Mentor engineers and promote engineering best practices Support software throughout its full lifecycle in a CI/CD environment Essential Experience Experience of designing and...

We are now seeking a Technical BA with strong experience in JSON schema and an IT background. Some knowledge of insurance is beneficial but not essential. This role is for a Technical Business Analyst experienced in JSON schemas and APIs, with a solid IT background. Working outside IR35, the BA will focus on technical requirements, particularly JSON schema development and API integration, supporting various financial and insurance services projects. Some insurance knowledge is helpful, though not required, as the primary focus is technical proficiency in JSON and APIs. Key Responsibilities Develop and document JSON schemas. Collaborate with technical and business teams for API integrations. Provide technical insights and recommendations. Ensure alignment with IT and business needs in schema and API solutions. Required Skills/Experience Proven experience with JSON schema development and API integration. IT background with strong technical analysis...

Python Developer - Django, (Python + Java/Rust). 100% REMOTE. £600-£650/DAY OUTSIDE IR35. We are seeking an experienced Python Contract Developer to help build and evolve Back End services. You will also play a key role in modernising our engineering ecosystem by helping decommission Legacy Rails components, migrating data models into modern services, and establishing new sources of truth across CLIENTS platform. This is a hands-on engineering role requiring deep Python expertise with Django alongside strong Java or Rust development experience to build high-performance, scalable Back End systems. YOU MUST BE AN EXPERT IN PYTHON WITH EXTENSIVE JAVA OR RUST SKILLS. Any API's (REST OR GRAPHGL) & Ruby On Rails a big bonus but not essential. Key Deliverables Build and enhance Back End services that reduce operational costs through automation and process optimisation. Develop scalable Python-based services and APIs that support candidate acquisition, onboarding, and...

Software Engineer/AI Engineer Fintech & Payments Domain. £600-£650/day LTD CO OUTSIDE IR35 PAY 1-2 days onsite London. Our Fintech Financial Service/Banking & Payment Service Client based in Central London seeks a proactive, hands-on Senior Software Engineer & AI Engineer with Claude or Codex & Java Development skills, with a particular importance to solid expertise in Claude or Codex AI Tooling, Agentic AI, Java Development using Spring Boot within a Fintech Payment Domain setting. YOU WILL NOT BE CONSIDERED IF YOU DO NOT HAVE FINTECH & PAYMENTS & JAVA & STRONG AI! The ideal candidate MUST HAVE previous experience working in a startup/scaleup Fintech Financial Services environment. Any ISA product implementation/integration experience is an advantage but not essential. AI skills in Codex, Claude is highly sought as my client is looking for someone who is an AI Enthusiast. Our client is hiring a hands-on Software Engineer/Java Developer to support...

Remote working U.K *SC and NPPV3 clearance essential* Outside IR35 *Please do NOT apply if you do not hold SC/NPPV3 clearance, these are non negotiables* We're looking for a Data Engineer/Developer to join a specialist team delivering innovative data solutions within the law enforcement and digital investigations space. This role centres on transforming complex investigative and forensic datasets into structured intelligence, developing automated data processing workflows, and supporting the integration of policing data standards into modern analytical platforms. You'll work with large volumes of digital evidence and intelligence data, designing robust transformation pipelines and automation that enable investigators and analysts to derive value from complex information quickly and accurately. This is an excellent opportunity for someone with a background in digital forensics, eDiscovery, law enforcement data, or data engineering who enjoys solving complex...

Contract Data Engineer / Developer Remote working U.K (Some travel maybe needed to sites in the U.K **SC and NPPV3 clearance essential** Outside IR35 **Please do NOT apply if you do not hold SC/NPPV3 clearance, these are non negotiables** We are seeking an experienced SC/NPPV3 cleared Data Engineer / Developer on a short term initial contract to support the delivery of innovative data solutions within a secure policing environment. This is an opportunity to work on projects that transform and integrate complex intelligence and forensic datasets, helping to improve operational capabilities through automation and modern data engineering practices. Essential Skills & Experience Experience within UK policing, law enforcement, government or national security environments. Understanding of digital forensic data handling and processing. Experience developing IES-to-SCREENING conversion solutions. Knowledge of SCREENING artefacts or policing...

KDB Developer - Outside IR35 Contract London, UK - Hybrid Working Up to £800 per day Long-Term Engagement on a Rolling Contract May Start Date Our client, a leader in the FinTech space are searching for a KDB Developer to add to their Client Engineering team! You'll be working alongside Software teams to develop, test and maintain all code for client applications. Responsibilities will include : Gather and translate business requirements into technical solutions for market data and analytics applications Design, develop, test and maintain kdb+ applications and supporting services Support full project delivery lifecycle, including debugging, optimisation and production support Perform data analysis and build reporting/analytics outputs for stakeholders Mentor junior developers and contribute to code quality, standards and team delivery Technical Skills needed : Hands-on experience with kdb+ and strong proficiency in q for time-series data...

Contract Mobile Developer (iOS/Flutter)- Likely outside IR35 Contract: 6 months (initial) Rate: Around £400 per day Location: Manchester, 2-3 days per week onsite I'm working with an exciting Manchester-based IoT technology business that's looking to bring in an experienced Mobile Developer to help evolve and enhance its mobile applications. This is a hands-on contract role within a growing engineering team where you'll have the opportunity to work on products that interact with connected devices used in the real world. What you'll be doing Developing and enhancing native iOS applications (Swift) Supporting Android development where required Contributing to cross-platform development using Flutter Building clean, maintainable and scalable mobile applications Working closely with firmware, Back End and product teams Helping shape technical decisions and improve development practices What we're looking for Strong commercial experience developing...

Python Developer I'm working with an engineering-led business that is scaling out multiple delivery squads to build the next generation of its cloud platform. They're looking for Full-Stack Cloud Developers who enjoy building modern, event-driven applications and taking ownership from development through to production. What you'll be working with: Python (Java highly desirable) GCP Cloud Run & Serverless Architecture Microservices Pub/Sub, Eventarc & Cloud Workflows Event-Driven Systems & API Integration Terraform Cloud Build & Cloud Deploy Docker & CI/CD Pipelines Automated Testing & DevOps You'll be part of a highly collaborative squad, working closely with Product Owners and Platform Engineers to deliver scalable, independently deployable services using modern cloud-native engineering practices. We're looking for engineers who are comfortable owning production services, solving complex technical challenges, and...

Senior Mobile Automation Engineer (SC Cleared) £450 per day Outside IR35 Remote First Occasional London Travel We're seeking an experienced Senior Mobile Automation Engineer to join a large-scale digital programme, helping shape and deliver modern mobile testing practices across multiple product teams. Working closely with senior engineering and quality stakeholders, you'll play a key role in driving testing excellence, defining automation strategy, and ensuring high-quality mobile experiences across both iOS and Android platforms. Key Responsibilities Define and implement mobile automation testing strategies. Build, maintain and improve scalable automation frameworks. Drive quality engineering best practice across multiple teams. Deliver automated end-to-end, integration, regression and API testing. Collaborate with developers, architects, analysts and product stakeholders. Support and mentor other testers within the team. Champion continuous improvement...

Senior Mobile Automation Engineer (SC Cleared) £450 per day | Outside IR35 | Remote First | Occasional London Travel We're seeking an experienced Senior Mobile Automation Engineer to join a large-scale digital programme, helping shape and deliver modern mobile testing practices across multiple product teams. Working closely with senior engineering and quality stakeholders, you'll play a key role in driving testing excellence, defining automation strategy, and ensuring high-quality mobile experiences across both iOS and Android platforms. Key Responsibilities Define and implement mobile automation testing strategies. Build, maintain and improve scalable automation frameworks. Drive quality engineering best practice across multiple teams. Deliver automated end-to-end, integration, regression and API testing. Collaborate with developers, architects, analysts and product stakeholders. Support and mentor other testers within the team. Champion continuous improvement across...

Senior Platform Engineer is required by this globally recognised business to help deliver a B2B platform from the ground up. In this greenfield role, you will lead the creation of a brand-new cloud platform and local development ecosystem. This foundation will empower external and internal developers to build scalable, media-focused applications seamlessly. You will have complete technical ownership over a modern, event-driven infrastructure using Kafka, AWS, and Kubernetes. Build, deploy, and maintain an automated cloud platform on AWS from the ground up. Design local development environments and self-service capabilities that allow developers to code and test efficiently. Implement high-throughput, decoupled microservices built completely around an event-driven architecture with Apache Kafka. Manage container orchestration across multiple environments using Kubernetes (EKS). Establish continuous integration and continuous deployment (CI/CD) pipelines utilizing GitHub...

DevOps Engineer - Contract – Consulting - AWS, Kubernetes, Terraform, Python / Go Oliver Bernard are currently working with a Consultancy client of ours who are looking for strong DevOps Contractors, from a Development background, for a large Cloud, Container and Software focused project. You’ll be expected to work in cross-functional teams, devised of DevOps Engineer, Architects and Developers, on a project to help scale the DevOps and Engineering practices for a key client of theirs. To be considered for this position you must have experience with the following: Strong experience with AWS and AWS Services Containerisation / Orchestration with Docker and Kubernetes History of IaC with Terraform, alongside CI/CD and Automation work Background in Software Engineering, comfortable coding with an OO language (ideally Python, Go or Java) Previous experience working in Finance or Regulated environments This position can offer £550-650 p/day, outside IR35,...