11 of 11 Permanent Java Software Engineer Jobs in the Thames Valley

Java Software Engineer - Banking London – 1 day a week onsite 🚀 Join a FinTech Powering the Future of Payments Are you a Java Software Engineer who thrives in a fast-paced, agile environment? Passionate about high-throughput, real-time systems? This is your opportunity to help shape the core technology that powers instant payments for … to enable real-time, secure transactions across the globe. 🔍 What You’ll Be Doing You’ll join a high-performing engineering team building asynchronous, event-driven systems using modern Java technologies. Design and build scalable, high-availability systems processing millions of real-time transactions Work with Java 17+, Spring WebFlux, AKKA, Kafka, and more Write clean, testable code … Kanban/Scrum) 🧠 What You Bring We’re looking for engineers who are pragmatic, performance-focused, and thrive on solving complex distributed systems problems. Strong hands-on experience with Java 11+ (ideally Java 17) Solid knowledge of Reactive Programming (e.g., Spring WebFlux, AKKA) Experience with event-driven architecture, real-time messaging systems (Kafka, JMS) Familiarity with asynchronous request More ❯

Java Software Engineer – Consultancy (multiple locations available in the UK) - competitive salary** Please note – due to the nature of work, all candidates must have DV clearance (UKIC Preferable) that is active and transferrable We are looking for a Java Software Engineer to join our consulting client. We have multiple locations available Responsibilities Participate in … agile software development practices, including daily stand-ups, sprint planning, and retrospectively Contribute to the continuous improvement of our team's processes and help us become more efficient Identify opportunities for improvement and propose innovative solutions to keep our client ahead of the curve Meet project deadlines and achieve company objectives, helping us bring our mission to life Key … skills and experience Coding experience in object-oriented languages such as Java, TypeScript or C# Familiarity with front-end web technologies such as HTML, CSS, and JavaScript frameworks like React Strong problem-solving skills and the ability to think critically Excellent communication and interpersonal skills A positive attitude and the ability to work well with others Self-motivated and More ❯

Role: Senior Java Engineer Location: London (Hybrid) We’re looking for an experienced Senior Java Engineer to join our cloud engineering consultancy. In this role you will be playing a key role in delivering high-performance backend services in a fast-moving, cloud-native environment — where releasing multiple times per day is the norm. This is … a hands-on engineering role with the opportunity to work on cutting-edge systems from day one. Tech Stack: Java (with experience with another language such as Golang, Kotlin, Python etc) Spring Boot Kubernetes , AWS Grafana , GitHub Event-driven architecture, microservices CI/CD & rapid delivery tooling What You’ll Be Doing: Build scalable and secure microservices using Java … in a high-frequency release environment — deploying multiple times per day Use Grafana (or similar) for observability and maintain production-grade reliability We’re Looking For: 5+ years of Java engineering experience (Java 11+; ideally Java 21) Strong background with Spring Boot , microservices, and cloud-native design Hands-on with Docker, Kubernetes , AWS , and containerised deployments CI More ❯

Senior Software Engineer – Backend (Java) 📅 6-Month Contract | 🏢 Hybrid (2 Days in Office) | 💷 £600 p/d inside ir35 We’re looking for a skilled Backend Java Engineer to join an innovative team on a 6-month contract. If you love solving complex problems, mentoring others, and working on cutting-edge data platforms at scale … this one’s for you! 🙌 🌟 What you’ll do: 💻 Develop and maintain scalable, data-driven applications in Java 🛠️ Lead on requirements, design workshops, and solutioning 🤝 Mentor junior engineers and share best practices ☁️ Implement & optimise microservices and distributed systems on GCP (GKE, PubSub, BigQuery, Dataflow) using Docker & Kubernetes 🔄 Build and manage efficient data pipelines with streaming tech + relational/… integration, and non-functional testing ⚡ Contribute to CI/CD practices with Jenkins and Git 🕵️ Troubleshoot, propose improvements, and stay ahead of emerging technologies 💡 What you’ll bring: 🔑 Strong Java & OOP experience 📊 Background in data platforms, frameworks & streaming technologies 🧩 Familiarity with microservices & distributed systems ☁️ Exposure to GCP (GKE, PubSub, BigQuery) 🗄️ Experience with relational/NoSQL databases 🐳 Proficiency with Docker More ❯

Java Software Engineer with around 3-5 years professional, post-graduate experience sought by one of the original Quantitative Hedge Funds, with a 20+ year track-record. The firm are renowned for a healthy, supportive, and collegiate working environment and culture, with no siloes, boasting an industry-leading staff tenure. This hire will be part of a … core Software Engineering team, responsible for the vast majority of all applications in the business from front-to-back office.This includes Order Management & Trading Execution, Risk & Finance, Straight-Through-Processing and Corporate Functions. The team deal directly with business users right across the firm, taking ownership of analysis, design, architecture, and implementation, working primarily with Java, but also … SQL and MATLAB. They currently have an opening for a mid-level hire in the team, with around 3-5 years’ experience.The successful applicant should have exposure to modern software engineering techniques such as CI/CD as well as excellent Computer Science Fundamentals, OOP, Concurrency, and Java Generics. Excellent communication skills are also extremely important for the More ❯

Senior Software Developer – Low-Latency Exchange Trading Location: London (Hybrid) About the Role: We are working on behalf of a leading player in the digital asset and trading infrastructure space, currently hiring a Senior Java Software Developer to join their high-performance trading systems team. This position focuses on exchange connectivity and ultra-low latency trading infrastructure … hybrid infrastructure stack. Ensure compliance with rigorous uptime, latency, and security standards. Drive automation to streamline trading workflows and reduce operational risk. Key Skills & Experience: 10+ years of commercial Java development experience in performance-critical environments. Strong understanding of exchange-facing protocols (e.g., FIX, binary, custom APIs). Advanced skills in JVM tuning, garbage collection optimisation, and memory management. More ❯

complete full-time training and will then be assigned to work in a junior role with one of our trusted client partners as a 'Spartan' consultant. As a Junior Java Engineer you will: Work closely with developers, designers, analysts, and testers to build and refine digital solutions Solve real-world challenges on dynamic and meaningful projects Write clean … ahead of industry trends by continuously researching and learning new technologies and you will play a vital role working within a cross functional team, participating in the development of software How it works: Learn : Complete a period of full-time Academy training when you join Sparta Global. All training is delivered remotely by our team of industry-professional trainers … your collaborative skills, problem-solving abilities, and growth mindset to secure your spot in the Academy. Person specification: To qualify, you need to demonstrate some experience or understanding of Java similar technologies. Most importantly, you should have a strong eagerness to learn and grow. We're also seeking passionate individuals who align with our values: Empathy & Diversity - Integrity, respect More ❯

Core Java Developer – Trading £140,000 Plus Large Prop Bonus Quant Capital is urgently looking for a Core Java Developer to join a well known trading firm. No experience of finance is needed, finance isn’t what this firm does, tech is. Our client is an innovative tech driven trading (Equities and ETF’s) company with a pioneering … Their trading capital is in the order of multi millions not 3 guys in a shed. The role: This role and would suit a candidate with 7 years of Java Development experience. The successful candidate will be a top tier Java developer (or aspiring, half of the team don’t have a comp sic degree) with a passion … and test driven. You will be encouraged to evangelise and prototype new technologies and approaches to help shape the evolving architecture. The successful candidate must be: Experienced in Core Java Highly motivated Delivery focused and accountable. Ideally experienced in server side multi-threaded Java – if you haven’t been siloed in a big firm then don’t worry. More ❯

Key Responsibilities: • Demonstrates significant working knowledge of Java and related technologies and advises on design, development, and implementation. • Leads by example, promoting an open and inclusive culture, holding responsibility for motivation, retention and performance management. • Leads the delivery of critical projects, coaching team members to be productive with little direction; delegating and reviewing work when required. • Leads timely design … documentation and alignment to standards, policies & strategy across emerging technology, as well as wider Group technology Required Skills and Experience: • Experience with Kafka/Event-driven architecture • Computer science, software engineering or relevant technical background required. • A minimum of 5 years of professional experience in backend development with a track record if producing and maintaining efficient and maintainable code. … work with stakeholders across the business to progress and achieve the relevant goals to ensure development, deployment & delivery is successful. Mandatory Technical Skills: • 5 or more years programming in Java • Spring inc. Spring Boot, Spring JDBC, Spring Data, Hibernate/JPA, building REST services • Understanding of REST API design • Experience of deploying and maintaining applications in the cloud (Azure More ❯

strategies used in the automated regression testing of these systems. Follows secure coding practices, performs triaging of security issues, and implements fixes to deliver secure applications. Familiar with common software vulnerabilities and leading practices to mitigate. Should have some experience in researching open- source technologies for use in building systems and participate in open source communities as needed. Works … on projects of moderate scope and complexity. Pro-actively identifies areas for improvement within the software system and processes. Develops assignments and schedules. Requires completion of an undergraduate degree in Computer Science or similar discipline, and 4 years of related experience. Key Responsibilities: Work on a team to deliver new products, features and fixes iteratively using an Agile Scrum … date knowledge of existing and emerging technologies relevant to the role Working and collaborating with remote teams around the world Qualifications & Experience Essential Attributes: 4+ years of experience in Software development of complex applications. Excellent understanding of design principles and considerations, best practice 4+ years of Java and C++ development experience History of applying best practices, code reviews More ❯

with design, research, and development of new applications and major enhancements. Provides guidance to developers, testers, and support staff. Using an understanding of the technological advances in both the software industry and in the oil and gas industry this person will challenge the technical software delivery process to deliver fit for purpose software in a more timely … manner. This person will have had experience in leading software development projects and may provide Technical Excellence Leadership for more than one team, providing expert guidance to software developers and support staff. Provides guidance to staff on application security standards, secure coding practices, and secure architecture designs. Provides a strong technical focus in product planning for a complete … software system. Requires completion of an undergraduate degree in Computer Science or similar discipline, and a minimum of 10 years of experience including software development experience. Key Responsibilities: Lead the team to deliver new products, features and fixes iteratively using an Agile Scrum approach working with the Product Owner, Scrum Master, Developers and QAs Working with the architects More ❯