1 to 25 of 35 Part-Time Java Engineer Jobs in the UK excluding London

Java Engineer – Cloud (GCP or AWS) | Scalable Systems | Product Environment Are you a Java engineer who thrives on building scalable, cloud-native systems? Want to make a tangible impact on modern product development in a fast-moving team? My client is looking for a Java Engineer with strong experience in either Google Cloud Platform (GCP) or Amazon Web Services (AWS) to join their high-performing engineering team. You’ll be developing robust, distributed systems and contributing to cloud infrastructure in a product-focused environment. Key Responsibilities: Design, develop, and deploy high-performance backend … testing, and resilience of services. Take ownership of cloud infrastructure components using GCP or AWS services. Essential Skills and Experience: Strong commercial experience with Java (Java 11 or newer) . Hands-on experience with GCP or AWS , including services such as Cloud Run, Pub/Sub, BigQuery, S3 More ❯

Senior Java Engineer Bristol (Hybrid) | Salary: up to £80,000 The Role We have an exciting opportunity for an accomplished Senior Java Engineer to guide a high-performing engineering team at global provider of enterprise SaaS solutions for the financial services. This is a hybrid position … clean, efficient code while mentoring others and shaping modern, scalable systems. Primary Responsibilities Take the lead in building cutting-edge backend solutions with modern Java (17+), setting the standard for clean, efficient code. Empower and mentor a talented Java engineering team, fostering growth and best practice. Champion engineering … by side with Product, UX, and fellow tech leaders to deliver innovative features that drive real user value. Essential Skills & Experience (Expert-Level Required) Java (17+) and Spring Boot. Microservices, REST APIs, performance tuning, and multithreaded programming. Architecture and design of scalable, high-performance software. Relational database design (PostgreSQL More ❯

Software Engineer - Java OR C++ Gloucestershire/London - 4 days on-site A global leader in aerospace, defense, and advanced technologies is looking for a permanent Software Engineer (Java/C++). This company is at the forefront of developing cutting-edge solutions for national security … British national with active SC or DV clearance. Candidates eligible and willing to undergo DV vetting will also be considered. Key requirements : Proficient in Java, and/or C++ Experience in JavaScript/TypeScript & React Experience of developing on Linux. Knowledge of mocking up and unit testing frameworks such More ❯

Senior Java Engineer – Core Java, Algo, Distributed Systems Location: Belfast – 2/3 days per week needs to be possible (only considering candidates in NI) Type: Contract Industry: Investment Banking Duration: ASAP – long term (12 months to start with extensions) We’re seeking Senior/Lead Java … systems that support trading across Equity Swaps, Delta One, and Prime Brokerage. While low-latency expertise is not essential, a deep command of Core Java and algorithmic/data structure proficiency is critical to succeed in this complex and performance-sensitive environment. Key Responsibilities: Design and enhance trading engines … microservices architecture , and contribute to distributed system designs. Lead database migrations from legacy systems (e.g., Sybase , DB2 ) to modern platforms. Required Skills: Strong Core Java expertise, with a focus on performance tuning and optimisation . Solid understanding of algorithms , data structures , and concurrent distributed environments . Proven experience with More ❯

Position: Lead Software Engineer Location: Manchester (Hybrid – 2 days per week in office) Salary Range: £85,000 – £140,000 Our client is shaping the next chapter of digital banking with one of the biggest and most innovative banking software projects in Europe. We’re looking for innovative minds to … help lead the way. If you're a hands-on Java engineer with a passion for scalable architecture and modern cloud-native development, this is your chance to work on something big. You’ll take a key role in a strategic engineering team that’s focused on designing … by architecting/building performant services and APIs which support innovative financial products. What You’ll Do Lead engineering efforts on backend services in Java, built for cloud deployment and aligned with modern software architecture principles. Design and maintain integration layers and orchestration services that connect Vault with various More ❯

Senior Software Engineer - Full Stack Engineer- Java, React, Spring Boot An exciting opportunity to join an innovative SaaS provider in the online gaming space. Work with top-tier clients in the UK and USA, contributing to the development of new software solutions within a rapidly expanding company. … Work within their software engineering squads to develop new and modernize legacy applications using microservices. You'll primarily focus on Java backend, with a practical understanding of frontend development. As such you will need: Expertise in core Java development Spring Boot Commercial JavaScript experience Strong React Any NoSQL More ❯

whose innovative products are making a true impact across multiple industries. As the business continues to scale, they're now looking for a Senior Java Engineer to take a key role in shaping the evolution of their core platform. This is the perfect opportunity for a Senior Software … Engineer with previous exposure to design and architecture to step up and take on a more senior role in a scaling software engineering team. You'll be joining a small but high-performing, collaborative engineering team, contributing not just code but also technical direction, architectural leadership, and mentorship to … What You'll Be Doing Take ownership of a key function within the company's core software platform, designing and architecting scalable, cloud-native Java applications. Lead by example in adopting best practices and modern development approaches. Collaborate across disciplines, particularly with product teams and hardware engineering, to deliver More ❯

Lead Java Developer with AWS A unique development opportunity to work on a Public Sector Based Large Scale program with an innovative market leader as Lead Java Developer. Requires a Lead Java developer with strong Java experience to create and implement solutions for our portfolio of … as well as supporting live systems and diagnosing incidents. You will join a team that prides itself on collaboration and engineering the best possible Java code. Essential: Java 17+, Spring Boot, Spring DataJPA, Spring Integration, Spring Batch, Microservices, Quartz, SQL Database (PostgreSQL), JPA (Hibernate), REST and SOAP Web … Jaspersoft, Spring extension projects (Data, Cloud, Batch, Security), Angular. • Public sector experience • 8-10 years of hands-on experience with large scale Spring based java projects. • Must have experience of supporting live systems and diagnosing incidents. • Experience in large scale integration projects involving microservices, messaging, web-services and distributed More ❯

Java Developer- Glasgow My Consultancy client is looking for several Java Developers to join them Up to £60k, benefits such as Bonus, 25 days Holiday, Paid for Certifications, Healthcare, Flexible hours and much more Hybrid working 2 says per week onsite in Glasgow Java, Spring, Spring Boot … techniques such as TDD, CI and Paired Programming. THE BENEFITS Bonus 25 days Holiday Paid for Certifications Healthcare Flexible hours Annual trips abroad THE JAVA DEVELOPER ROLE: You’ll be joining a Financial Service client in Glasgow, 2 days per week onsite. In this role, a developer will be … between external groups and the project team, while also tracking project progress, offering timely feedback, and fostering a culture of agility and continuous learning. JAVA DEVELOPER ESSENTIAL SKILLS: Java 8+ Spring/Spring Boot SQL REST CI/CD Leadership qualities Critical thinking skills TO BE CONSIDERED: Please More ❯

Java Developer- Glasgow My Consultancy client is looking for several Java Developers to join them Up to £80k, benefits such as Bonus, 25 days Holiday, Paid for Certifications, Healthcare, Flexible hours and much more Hybrid working 2 says per week onsite in Glasgow Java, Spring, Spring Boot … techniques such as TDD, CI and Paired Programming. THE BENEFITS Bonus 25 days Holiday Paid for Certifications Healthcare Flexible hours Annual trips abroad THE JAVA DEVELOPER ROLE: You’ll be joining a Financial Service client in Glasgow, 2 days per week onsite. In this role, a developer will be … between external groups and the project team, while also tracking project progress, offering timely feedback, and fostering a culture of agility and continuous learning. JAVA DEVELOPER ESSENTIAL SKILLS: Java 8+ Spring/Spring Boot SQL REST CI/CD Leadership qualities Critical thinking skills More ❯

Role: Senior Java Software Engineer Salary: £60,000 - £80,000 - DOE Location: Ipswich (Hybrid) Type: Permanent About the job: Are you an experienced Senior Software Developer who loves variety and still loves learning new things, while connecting with new people along the way? This role could be for … with key stakeholders within the business and estimating development timelines. I have partnered with a fantastic business who are looking to add a Senior Java focused Developer to the team. Senior Software Developer required skills: 5 year’s commercial experience minimum Strong Java background SQL HTML, CSS, JavaScript More ❯

Java Developer is sought on a remote basis by a market leading professional services organisation based near Birmingham. This Java Developer would be joining the innovation arm of the business tasked with building complex, highly scalable greenfield solutions utilised by governments around the world to deliver key public … services. Due to the R&D driven culture within this team this Java Developer will be given opportunities to learn and work with the latest AI & machine learning technologies developing applications using a modern microservices, automated architecture. With a real commitment to employee wellbeing and personal development this Java … with 4 self promotion opportunities a year alongside companywide commitment to wellbeing by providing a best in class physical and mental wellbeing program. This Java Developer based near Birmingham should have most of the following key skills: 3 years plus of Java experience Strong Spring Boot framework experience More ❯

PE Global is recruiting a Java Software Engineer for our industrial manufacturing client based in Wrexham. The role is an initial 12-month contract and the role is hybrid. The rates for this role is between £26.52 and £35.27 per hour. Responsibilities: Be a hands-on technologist spending … communication skills demonstrating the process and progress to stakeholders, as well as internal team communication Proficiency in at least one general purpose programming language (Java or JavaScript/Typescript) with willingness to learn new languages and technologies Experience or familiarity with some of the core platform frameworks and libraries More ❯

low latency pre-trade credit component we deliver a performant, cost effective solution to your eFX needs. Role Lucera Financial Infrastructures is hiring a Java Software Engineer for our Belfast office to work on our core infrastructure as a service platform, used by some of the top names … pick up new technologies Background in taking products from design right through to delivery Strong sense of writing quality maintainable code Commercial experience in Java (8+) Use of Micronaut/Spring (or equivalent) Frameworks Developing against Relational and NoSQL Database (MongoDB, Postgres etc) Experience with unit testing methodologies and More ❯

Java Full Stack Engineer Are you self-motivated with an innovative mind, a passion for technology, and a good understanding of object orientated development? Apexon is a digital-first technology services firm specializing in accelerating business transformation and delivering human-centric digital experiences. We have been meeting customers … have: Bachelors or higher in Computer Science (or equivalent work experience) Minimum 2 years of application development engineering experience Programming and software development in Java Experience building transactional systems and strong understanding of software architecture Strong written and verbal communication skills  Good attention to detail and analytical thinking Ability More ❯

Java Developer You must be eligible for SC Clearance London based - Hybrid Working My Client is the leading innovation and transformation consultancy in the UK and they are currently in search of a highly talented Java Developer to join their offices in London. Successful candidates will be helping … of clients such as law enforcement agencies, telecommunications companies and compliance agencies. What will you be doing Apply strong object-oriented programming principles in Java to design and implement robust and scalable solutions. Leverage Java 8 features, including streams, functional interfaces, and collections, to enhance code readability and … solutions and implement scheduling using Jenkins/Ansible. Use a combination of Cucumber, JUnit, Selenium, and Postman for comprehensive testing. Requirements for the ideal Java Developer Minimum of 3+ years of hands-on experience in Java software development Extensive experience in the specified technologies and tools. Proven ability More ❯

Day to day: Insight Global is looking for Java Engineers to join a leading financial institution in Birmingham for a 1-year ongoing contract. The chosen candidate will be sitting in the Corporate Treasury Engineering group and be involved in maintaining and enhancing existing products to support the firm … technical and non-technical stakeholders and as such, strong written and verbal communication are required for this role. Must haves: • Experience in coding with Java and building and delivery software at scale • Experience with Spring and Hibernate • Experience with database technologies such as DB2, SQL, Mongo, and microservices architectures More ❯

well-known technology business based in Edinburgh who are looking to grow their hugely successful engineering team and are looking for a Senior Software Engineer in the Java space to work on customer facing applications and systems. There is a huge focus on innovation with some major projects … in the works. You will have experience developing highly scalable and available back-end systems & API’s using Java and Cloud based infrastructure and technologies ideally AWS. Although this is predominantly a back-end role, there will also be the option to get involved in some front end work … operate a Hybrid model where it is usually 1 day a week onsite in their modern Edinburgh office. Experience Strong back-end experience with Java Experience with AWS as well as understanding DevOps concepts such as IaC (we use Terraform) Experience with Kafka and event streaming Experience working on More ❯

UK remote (willing to travel to Glasgow office once per quarter) We’re looking for a talented Senior Java Developer to join a growing tech team working on an exciting new platform. This is an opportunity to work with cutting-edge search technologies and large-scale data processing while … contributing to a product that makes a real impact. Your Role As a Senior Java Developer, you’ll play a key role in designing, building, and maintaining a robust data platform that powers our core products. You’ll collaborate with cross-functional teams to create highly performant and scalable … high-quality, well-structured code using Agile and TDD practices Develop new features across the full stack , from React/TypeScript front-end to Java-based backend services Build and optimize search solutions using technologies like Apache Lucene, Solr, or OpenSearch Design and implement data pipelines in collaboration with More ❯

Role Title: Java Developer (SC Cleared) Role Location: Solihull, UK Role Type: Contract (Outside ir35) Job Description: Java/AWS developers will be responsible for developing solutions and simulators as part of the end to end solution. The role requires in-depth understanding of the software development lifecycle … and strong technical experience with an open-minded attitude and ability to rapidly adapt and learn. Requirements - Hands on experience with Java 8 or above - Hands on experience on writing Junits - Hands on experience on Spring Framework, SpringBoot - Hands on experience with relational database (e.g. PostgreSQL) - Hands-on experience More ❯

Java Developer - Cheltenham - £40k - £60k On-site/Hybrid (MUST BE DV CLEARED) My client headquartered in Cheltenham, who deliver smart software solutions within sectors such as cyber technology, science, and engineering are actively seeking a Java Developer to join their ever growing team. You’ll have fantastic … great opportunity. It’s also about the people and the culture – collaborative, inclusive, and genuinely focused on your development. Responsibilities: Develop, test, and maintain Java applications. Collaborate with team members to define and implement software solutions. Participate in code reviews and contribute to best practices. Troubleshoot and resolve software More ❯

Senior Java Developer 🌍 Up to £150k 💸 - Remote Working 🏡 – 6+ years experience 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 is … leverage advanced technologies 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 advance sustainable energy solutions, contributing to a greener future. Key Requirements ✅ 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 understanding and practical expertise in asynchronous More ❯

Senior Java Developer 🌍 £100k–£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 … 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 … 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 More ❯

Key Responsibilities: Support and lead different phases of the product lifecycle, including analysis, development, and testing Develop new and enhance existing components in Java, with a focus on back-end application development Collaborate with front-end developers on HTML5 and Angular application development Contribute as a proactive member of … with zero downtime and single-click deployment capability Help shape pricing and workflow strategy and tooling within the organization Requirements: Practical experience in building Java applications Strong Test-Driven Development (TDD) experience Proficiency with Agile development methodologies and systems engineering Experience in build and release management principles, including continuous More ❯

Senior Backend Software Engineer Up to £70,000 + 15% Bonus + Stock Options Join a fast-growing tech company that's reimagining how modern marketplaces are built. We're looking for a hands-on Senior Backend Engineer to help evolve a highly scalable platform powered by microservices … world problems. Help shape engineering practices and mentor junior developers. Collaborate with a remote-first, high-performing team across time zones. Tech Stack: Kotlin, Java (or other JVM), Spring Boot, GCP, Kubernetes, Docker, Kafka, PostgreSQL, MongoDB, CI/CD pipelines. Experience in Go, Python, or C# also welcomed. What More ❯