51 to 75 of 85 Java Jobs in Watford

on customer needs and satisfaction, setting high standards for quality and quantity. Desired Skills and Experience: Dynamics 365 Accreditations Proficiency in C#, ASP.Net, Python, Java, JSON Experience with enterprise CRM systems Proven track record in delivering complex projects Strong customer engagement and management skills If the above opportunity is of More ❯

environment - SQL - Data Protection/GDPR - expert English language - GIT/GITHUB - adaptable to different programming languages if required; perhaps especially Android Studio/Java We are open to discussions about the hours that would suit you, as well as work location (e.g. remote working and/or from our More ❯

Capital, Apexon now has a global presence of 15 offices (and 10 delivery centers) across four continents. Job Title: Software Developer in Test (SDET) - Java Location: United Kingdom About Us We are a leader in the fintech space, driven by innovation and committed to delivering a seamless customer journey that … Selenium, GitLab . Skilled in automating API tests and leveraging APIs for test setup and teardown. Strong expertise in creating test automation code using Java . Solid experience with various types of testing (Component, Integration, End-to-End, Functional, Non-Functional). Comprehensive understanding of testing principles, processes, methodologies, and More ❯

Job Title: Senior Java Developer Location: Primarily Remote (with meet ups twice a month) Salary: £80,000 - £90,000 (Flexible based on experience) Are you an experienced Java developer looking for a new challenge? Do you thrive in an environment where you can take ownership of key areas and solve … Then this may be for you: Mostyn Chase are conducting an exclusive search for a well-established fintech in the payments space for Senior Java Developers to join this growing and dynamic team. The roles are designed to bring in developers who can work independently, solve complex problems, and eventually … in a flexible, remote-first environment, this could be the perfect opportunity for you. The ideal candidate will have the following: Extensive experience in Java development, particularly in building scalable and secure web applications. Strong experience with Spring, Hibernate, MySQL, JSP, HTML, CSS, JavaScript, Angular, and TypeScript. Proven ability to More ❯

Shape architecture and ship new features - Build something that genuinely helps people What we’re looking for: - Strong experience in Swift and Kotlin/Java - Must have built apps from scratch - Must be happy working independantly - End-to-end app launch experience - Solid UI/UX instincts - UK-based (remote More ❯

Tech Stack Over 10 years’ experience in Software Architecture with enterprise experience Architecture of Development experience which encompasses SaaS or API based platforms .NET, Java or OOP background HTML, CSS, JavaScript Database design, caching, systems integration Benefits Package Remote Annual bonus £500 home office set up £60 pcm WFH costs More ❯

a relevant field. 10+ years in application and enterprise architecture roles. Proven experience designing SaaS-based systems and external-facing APIs. Proficiency in .NET, Java, or similar languages, with a broad technical skillset spanning frontend and backend development. Strong understanding of systems integration, middleware, caching, databases, and web performance optimisation. More ❯

Development Engineer in Test who is passionate about quality, reliability, and secure software development. In this role, you’ll be responsible for testing a Java-based codebase that powers our secure coding labs and training platform. Your mission is to ensure our software is reliable, robust, and meets the highest … standards of quality. Key Responsibilities Design, develop, and maintain test plans, test cases, and automated test scripts for Java-based systems, with a focus on both functionality and security. Perform functional, regression, integration, and system-level testing. Validate business logic, user workflows, and secure handling of data across our platform. … Create and manage automated test suites using tools compatible with Java (e.g., JUnit, TestNG, Selenium, REST Assured). Validate REST APIs, backend services, browser-based interfaces, database interactions, and multi-threaded service components using manual and automated approaches. Participate in regression and exploratory testing to uncover edge-case issues. Participate More ❯

to work for a GreenTech company in zero tech debt that is committed to being the industry's top platform for a sustainable future? Java Software Engineer - GreenTech Start up! £60-90K + benefits Fully remote from anywhere in the UK We are partnered with an ‘energy-as-a … service’ platform, that was created to help both customers and suppliers advance the energy revolution. They are urgently looking for Java Software Engineers to join their rapidly growing team. Innovation is highly important to this company; they are looking for Java Software Engineers who wish to dominate the market and … As a technology company, they only complete GREENFIELD work, building and developing all frameworks, databases and tools from scratch. Tech stack required as a Java Software Engineer: · Core Java · C · Experience with APIs · Microservices · Multithreading, concurrency & high throughput · AWS · Kubernetes Benefits you will enjoy as a Java Software Engineer: · Pension More ❯

Urgent Requirement – Java Lead/Architect Contract/Remote We’re looking for a hands-on Java Lead/Architect to drive a high-impact data integration and transformation project. You’ll lead two developers, set technical direction, and roll your sleeves up with Java and XML-heavy workstreams. Key … Tech: Java 8+, Spring Boot, Camel XML (XSD, XPath, XSLT, Schematron) Canonical data modelling & semantic structures AWS deployment of transformation pipelines Tools like Altova, XStream, MaterialUI Bonus if you know: Finvoice, Peppol, UBL, TEAPPS, B2B/EDI exchange formats You’ll need to be: Equally comfortable leading and coding Strong More ❯

Mid level Java Developer - 9 month contract - Hybrid - start ASAP This role will involve software development across multiple microservices. Need experience in: Strong knowledge and extensive experience of modern Java technologies, frameworks, and design principles. specifications. Test-Driven Development (TDD) and Behaviour Driven Development (BDD) practices and techniques. Will be … writing unit tests for java services that meet a set criteria of coverage that will be automatically tested as part of our CI/CD process. Knowledge and experience of APIs (Open API/Swagger), RESTful services and Microservice Architectures. Strong knowledge and extensive experience of developing on cloud-based More ❯

you will need: 10 plus years of experience in Software design and coding experience with external API platforms. Experience with C#/.NET or Java Experience with System Integration Experience identifying and resolving performance and scalability issues for both web-based applications and databases. Payments experience would be a huge More ❯

Senior Java Developer 📍 UK-based | Remote-first with occasional London/northern meetups 🕒 Full-time | Salary: £70,000 – £90,000 What you’ll be doing Develop and maintain Java-based systems across multiple businesses Gradually modernise legacy code, introducing cleaner architecture and better development practices Work closely with onshore and … strategy and play a key role in shaping our future stack Support a secure and compliant development environment What we’re looking for Solid Java development experience Comfortable working with and improving legacy codebases Familiarity with AWS and cloud-based systems Good communication skills and collaborative mindset Experience in (or More ❯

Senior Software Engineer – Java - FinTech Remote First | London (UK) | Up to £120k + Benefits Are you a Java developer who thrives in a collaborative, test-driven environment? Do you believe in pair programming, continuous integration, and clean, maintainable code? If so, we’d love to hear from you. Our FinTech … client could be the ideal role for you.... Skills: Commercial Java experience - ideally in a fintech, performance environment Strength with Core Java Strong understanding of TDD Clear communication and teamwork Extreme Programming (XP) principles, with a strong focus on TDD, BDD, and DDD. Pair programming cultur e ensures high-quality … is key. We value growth and flexibility, welcoming developers from all backgrounds. What You’ll Be Doing Building resilient and adaptable fintech platforms in Java Refactoring to improve code design Writing comprehensive tests for every commit Automating processes to improve efficiency Rotating across teams to enhance collaboration More ❯

Head of Backend (Java) B Corp Certified - Fintech Remote Working (UK Based) Salary up to £150,000 Base + Bonus SR2 are partnering with a long term B Corp Fintech client of ours, supporting them in recruiting for a permanent employee who with be heading up their Java team who … round. The role is remote working, but will require you to meet occasionally with the CTO who is East Midlands based. The Head of Java role is a critical leadership role in the business, you will be guiding the Java development team, leading from the front in terms of innovation … your team and setting the technical direction. Experience Needed: Strong Leadership/Team Management: The ability to mentor, coach and inspire a team of Java Engineers towards technical excellence, whilst fostering a positive, hands on and collaborative environment. Deep knowledge/expertise of backend development & Microservices: Solid understanding of API More ❯

and technical excellence Own backend architecture and strategy, ensuring systems are scalable, reliable, and secure Play a hands-on role in development, especially in Java (ideally with Quarkus/GraalVM, or SpringBoot as an alternative) Oversee backend API design and integration, including messaging platforms such as Pub/Sub Define … Maintain high standards in software quality, testing, and maintainability What we’re looking for: 10+ years in software engineering, with 7+ years in backend Java development Strong experience building distributed systems and microservices Proven leadership of engineering teams with the ability to coach, delegate, and develop others Hands-on expertise … in Java, with a strong preference for Quarkus or GraalVM; SpringBoot experience also considered Familiarity with messaging systems such as Pub/Sub, Kafka, or RabbitMQ Strong understanding of REST API design, CI/CD practices, and Agile methodologies Experience in fintech, payments, or banking domains Who this suits: Someone More ❯

Senior Java Developer 🌍 Up to £150k 💸 - Remote Working 🏡 – 6+ years experience (PhD Required) Our client, a GreenTech specialising in optimum renewable energy software, is revolutionising the energy industry by making sustainable living accessible and effortless for both suppliers and consumers. They’re looking for a Senior Java Developer who has … technologies, being able to create impactful solutions in a fast-paced, collaborative environment. Role Highlights 🌟 Design and implement high-performance software systems using Core Java, without relying on frameworks. Tackle multi-threaded, low-latency challenges, manage extensive data streams, and optimise asynchronous programming for real-time scalability. Drive projects that … A PhD in Computer Science and the ability to demonstrate extensive knowledge in Software Development. 6+ years with extensive hands-on experience in Core Java, developing systems from the ground up without frameworks. Advanced proficiency in multi-threading, low-latency solutions, and data stream management. Strong knowledge of Advanced Computer More ❯

We are looking for a Principal Vulnerability Engineer who will be part of the security vulnerability team for the Java platform. This team conducts both the red team (offensive) and blue team (defensive) duties. Responsibilities will include proactive research, security tooling, assessments, and assisting development teams with security code review. … Qualified candidate must have at least 10+ years of hands-on experience in platform security, deep knowledge of Java security model is a must. Minimum 10+ years of hands-on experience with security protocols and best practices are required. Ideal candidate is expected to work independently on assigned tasks. Proven … past experience in successful security incident resolution and proactive research utilizing industry standard tools is a must-have. Past research and CVEs on Java security issues are a plus. Must have proficiency in Java, and expert level C/C++ skills, and systems level programming. Great personal leadership, self-starter More ❯

About the role We have an exciting opportunity for a Java Engineer to join the elementsuite team, with a passion for clean code, elegant architecture, and efficient delivery. This is a hands-on role where you'll be developing the elementsuite platform and its foundational services - all mission-critical components … that underpin our software stack. You'll be working with Java (and Rust where needed), developing robust, secure, and scalable applications. As part of a small, elite team, you'll have the freedom and responsibility to shape our platform's future. elementsuite is rewriting the rulebook on how enterprise software … solution is designed to power exceptional employee experiences and help our customers thrive. Key responsibilities in the role will include: Delivering best-in-class Java platform code, developing software in an iterative cycle with a focus on architecture and design throughout the process. Creating robust, scalable applications, using industry-standard More ❯

Have you got a PhD background in Computer Science with a focus on Algorithms? Java Developer – Sustainable Energy 💰 £80,000 - £110,000 🚩 Fully Remote working from home anywhere in the UK We are so excited to be partnered with a Sustainable Energy Start-up on a mission to become the … and architectural decision-making when it comes the design and creation of new products, all while working from home. You will be an excellent Java Developer if you: Have worked in high-performing and low latency environments Are highly experienced using Core Java with multithreaded applications Possess a strong comprehension … a highly flexible work-life balance, as well as unlimited potential to grow with the company as it grows itself, this is an unmissable Java Developer opportunity! If you would like to combine your deep understanding of algorithms and data structures with the ability to ‘do good’ and make a More ❯

Engineer to work closely with the CEO to drive the engineering strategy of the company. Their highly scalable, low latency platform is built on Java, AWS, Docker and Kubernetes. You will be an ideal Senior Software Engineer if you have: PhD educated background, ideally in Computer Science or Maths, Engineering … Deep understand of Computer Science fundamentals and Core Java concepts Strong comprehension of Compilers and Compiler Theory , and DSL (Domain Specific Language) Java experience with multithreading, concurrency and low latency Are theoretical in your approach As a company they are massively scaling up their development function this year and you More ❯

excellent benefits Remote-first, with access to hubs in London or Cheltenham Mission-led work – develop systems that directly support national security Work with Java, Spring Boot, AWS, Kubernetes, React Join a collaborative culture that values autonomy, growth, and innovation What You’ll Bring: Experience leading Agile/Scrum software … teams Strong technical foundation in Java and modern cloud-native infrastructure Background in secure systems, ideally within the intelligence, government, or defence sector SC or DV clearance (current or lapsed) highly desirable Excellent communication and client engagement skills British passport (essential) This role would particularly suit someone who currently holds More ❯

and act as a technical reference point across multidisciplinary teams. Custom Tool Development: Spearhead the creation of custom tools, features, and extensions using Python, Java, or JavaScript as needed. Continuous Improvement: Identify opportunities to enhance delivery frameworks, engineering processes, and technical standards. What We're Looking For Education: A strong … academic background in Computer Science, Engineering, Mathematics, Physics, or a related discipline. Extensive Coding Experience: Proven expertise in Python, Java, C++, JavaScript, or TypeScript, ideally across production environments. Strategic Mindset: Able to zoom out and contribute to high-level planning while also diving into technical detail. Client Facing Confidence: Comfortable More ❯

Senior Backend Engineer Contractor (Java/Ruby focused) | Fully Remote/EU-Based | Rate £550-650pd, Outside IR35 | 12-months Contract Length Opportunity: We're supporting a fast-moving client at huge global scale, that is in need of a Senior Backend Contractor with deep experience across Java and … a tech-driven established team - building scalable systems in a modern backend environment. What You'll Be Doing as a Senior Backend Engineer Contractor (Java/Ruby focused) | Fully Remote/EU-Based | Rate £550-650pd | Outside IR35 : Designing and building robust backend services across Java, Python, and Rust … practices across multiple programming paradigms and languages Ideally, supporting legacy Ruby codebases or integrations where needed Core Skills for the Senior Backend Engineer Contractor (Java/Ruby focused) | Fully Remote/EU-Based | Rate £550-650pd | Outside IR35 : Senior-level backend experience with both Java and Python in production More ❯

within development teams, ensuring smooth CI/CD processes, automating software deployments, and optimising cloud-based application delivery. You will bring deep expertise in Java or Node/React development using containerisation and take ownership of DevOps initiatives within engineering teams. This is a hands-on role where you will … have formerly been a developer. Key Responsibilities Define and implement DevSecOps strategies within development teams. Develop and maintain automated CI/CD pipelines for Java or Node/React applications. Experience with SonarQube or similar Drive best practices in cloud-native application deployment on Azure . Work closely with developers … Strong hands-on experience in DevOps and CI/CD pipeline automation ( Azure DevOps or GitHub Actions preferred ). Software development background in Python Java or React (Node). Strong understanding of Azure cloud services, networking, and security best practices . Experience working in agile, fast-paced environments. Exposure to More ❯