1 to 25 of 45 Senior Java Engineer Jobs

Senior Java Engineer/Developer (AI) London/WFH to £110k Are you a technologist with a strong knowledge of AI and its practical uses within software engineering? You could be progressing your career in a senior, hands-on Senior Java Engineer role … budget for organising events and projects that foster an open, diverse and inclusive culture Plus a range of other perks Your role: As a Senior Java Engineer you'll join an experienced team working on AI innovation within the business. Your primary focus will be on using ...

Senior Java Engineer London Salary: £70,000 - 80,000 Bonus: TBC This is a hybrid role that requires 3 days a week office attendance About the Company An exciting opportunity has arisen for a Senior Java Engineer to be part of a highly innovative … bespoke best-of-breed banking technology, a single platform delivering loan issue, card issue and recovery. We're looking for an exceptional Senior Java Engineer who will work closely with the Java Team Lead & CTO as we scale up and modernise our business processes and tech ...

Senior Java Engineer (Kafka, Spring Boot, Microservices) We're hiring a Senior Java Engineer to build secure, real-time systems using Java, Spring Boot, and Apache Kafka. You'll design scalable event-driven microservices, collaborate across the stack, and shape a platform used … mission-critical environments. If you're a hands-on backend engineer passionate about distributed systems, resilience, security and clean architecture — this is your next challenge. Location & Flexibility Work remotely from anywhere in the UK, with the option to use a London office when you prefer in-person time. Team ...

Senior Java Engineer | hybrid (2 days in office) | Up to £85k Want to work for a global technology company that helps businesses easily connect, manage, and scale their devices using secure and reliable mobile connectivity worldwide. We’re looking for a Senior Software Engineer … properly , using sound engineering theory and modern architectural patterns. What You’ll Be Doing Designing and building scalable, event-driven systems Working heavily with Java , applying strong OOP principles and design patterns Contributing to software and system architecture decisions Challenging ideas constructively and raising engineering standards Supporting the team ...

Senior Java Engineer - Edinburgh, Hybrid This UK-based space technology business is quietly redefining how mission-critical software is built and used across the space sector. Its platforms support organisations worldwide, from research institutions to commercial operators, helping them design, deploy and operate space systems with greater … company's future Ongoing learning, development and conference opportunities An open, inclusive culture where your work has visible impact The Role: As a Senior Java Engineer, you will help shape complex software products used in real space missions. You'll work on new capabilities as well ...

Senior Java Engineer (Kubernetes, Kafka, Cloud) – Finance – London Daily rate: £500 - £700 (inside IR35) Duration: 12 months Hybrid: 8 days per month Start: ASAP A banking client of mine is looking for a Senior Java Engineer with Kafka and Docker skills to join … team on a freelance basis. We are specifically looking for an individual with strong Core Java expertise, as this role primarily involves server-side development. Must be based in the UK and happy to be on site 8 days per month which is mandatory. Responsibilities & Duties Working as part ...

Senior Java Engineer – Actuarial Data Squad – Outside IR35 - Contract We’re looking for a Senior Java Engineer to join a high-profile project focused on backend systems that automate complex financial and actuarial processes. This is a hands-on role delivering backend solutions under … tight deadlines in a highly regulated environment. Key Responsibilities: Develop backend systems and APIs in Java, using the Spring ecosystem Work with AWS and infrastructure-as-code tools such as Terraform or Helm Design and implement scalable, production-ready systems for complex financial processes Collaborate with business and technical ...

Senior Java Software Engineer - User Interfaces Location: Guildford, GU1 4QU Salary: Circa £50K - £85K per annum, DOE + Benefits, Bonus and Relocation Contract: Full time, Permanent Benefits: Competitive salary, Annual bonus, Private medical insurance, Membership fees to professional organisations, such as the IET or BCS, 8% employer … systems engineers. Due to our continued success, we are looking to expand our highly skilled engineering team. The Role: We are currently seeking a senior Java software engineer who specialises in user interfaces to join our engineering team. The successful applicant will work as part ...

Role: Senior Java Engineer Location: Osterley, UK Contract role - Inside Ir35 Hybrid work: Min 4 days from client location Experience: 10+ Start date: Immediate Key Responsibilities: Highly skilled Senior Java Developer with hands-on experience in Spring Boot, WebFlux, and Reactive Programming. Experience in optimizing … Mentor junior engineers and contribute to technical leadership across the team. Required Skills & Experience: 10+ years of professional software development experience. Strong proficiency in Java, spring boot Solid understanding of Docker Compose, Kubernetes, and Amazon EC2. Expertise in at least one major cloud platform (AWS, GCP, or Azure). ...

Senior Java Developer - Java, Springboot & AWS – paying up to £650/day (Inside IR35) – Hybrid (2x a week - London) – 6 month contract Our client is seeking a Senior Java Developer who is passionate about clean code, cloud-native systems, and building technology that makes … unique opportunity to work in an agile, high-ownership engineering culture. What You'll Be Doing: Build and scale backend services using Java and Spring Boot Shape a modern microservices architecture for a high-availability platform Deploy and manage services in AWS with Kubernetes (EKS) Design, implement ...

Senior Java Software Engineer Remote UK | Global Fintech | Merchant-First Payments Ecosystem A high-growth global fintech, renowned for delivering world-class payments-related software and technology, is looking to expand its engineering team. As the company continues to scale its platform to meet growing demand, they … real-world problems with elegant, modular, and testable code—and who want their work to make a tangible difference. About the Role As a Senior Software Engineer II, you'll be responsible for designing and developing backend services and portals that power the core payment processing platform. ...

Senior Java Software Engineer Bristol (Hybrid – 3 days per week) Up to £75,000 (BOE) ClimateTech Want to use your backend skills to fight climate change? At Bohr, your code won’t just power systems, it will directly protect the planet. We’re tackling … helps utilities spot the largest methane leaks quickly, repair them efficiently, and dramatically reduce greenhouse gas emissions. The Role We’re looking for a Senior Backend Engineer to help design, build, and scale the cloud-based platforms that power our methane detection and emissions intelligence systems. ...

Senior Java Backend Engineer Location: Hybrid – Manchester Job Type: Permanent | Full-Time Salary: £80,000 – £95,000 + Benefits We're supporting a fast-scaling UK digital banking platform as they continue strengthening the systems that power millions of daily transactions. They're now looking … Senior Backend Engineer with strong Java engineering experience and a passion for building reliable, distributed systems at scale. This role is ideal for someone who enjoys working on event-driven, distributed architectures, values thoughtful system design, and wants to deliver high-impact backend work at scale. ...

Java Engineer – 6-Month Contract – Hybrid (2 days on site, London) - Day Rate: Up to £700 (Inside IR35) Join a high-performing engineering team working on large-scale, high-availability systems used by millions. This role offers the chance to build and enhance complex backend services … modern, cloud-native environment. What you’ll be doing: Designing and developing performant, scalable backend systems using Java (up to Java 21). Building microservices with Spring Boot and related frameworks. Developing and maintaining RESTful APIs and event-driven systems. Writing clean, testable code and following TDD principles. ...

seeking an experienced Senior Java Software Engineer to join the IT team at a leading bank, supporting the delivery, maintenance, and enhancement of core systems across various business areas, including operations, compliance, transactions, and client management. This is a 6-month contract role offering an excellent … services, or government/public sector organisations. In this role, you will be an integral part of the software development lifecycle, working closely with Senior Java Developers, UI/UX teams, and Agile Transformation to architect, build, and deliver greenfield, brownfield, and integration applications. You will be expected ...

Senior Java Developer - Leeds City Centre (Hybrid) Up to £60,000 | 4 Days in Office, Friday WFH | AI & Machine Learning I'm recruiting for a forward-thinking tech company based in Leeds City Centre that's transforming how retailers harness AI and machine learning to boost profitability … stay competitive in a rapidly evolving market. They're looking for an experienced Senior Java Developer to join their talented team of 7 engineers, reporting directly to the Engineering Manager. You'll play a pivotal role in developing intelligent, data-driven software used by major retail clients across ...

Java Software Engineer Edinburgh/Hybrid Up to £60,000 I am looking for an Java Software Engineer to join a leading international network security software company This is a fantastic opportunity to work with cutting-edge technology and make a real impact in the industry. … close-knit IT team supporting the internal operations and support a globally dispersed workforce. The Role: Software development and support of complex and algorithmic Java software within a Linux environment. Development and use of software APIs between components in a Linux system. Collaborate closely with other team members, product ...

Java Software Engineer Edinburgh/Hybrid Up to £60,000 I am looking for an Java Software Engineer to join a leading international network security software company This is a fantastic opportunity to work with cutting-edge technology and make a real impact in the industry. … close-knit IT team supporting the internal operations and support a globally dispersed workforce. The Role: Software development and support of complex and algorithmic Java software within a Linux environment. Development and use of software APIs between components in a Linux system. Collaborate closely with other team members, product ...

Senior Java Developer – London (Hybrid: 2 Days Onsite) We’re partnering with a leading global organisation that is scaling its engineering function and looking for a Senior Java Developer to join their London team. If you’re passionate about building data-driven platforms, enjoy solving complex … want to work with modern cloud-native technologies, this is the role for you. What You’ll Be Doing Designing, developing, and maintaining scalable Java applications using strong OOP principles. Playing an active role in requirements gathering and design workshops , contributing ideas and identifying gaps. Mentoring and pairing with ...

Senior Java/Kotlin Engineer – Technology Consultancy Location: Hybrid (2 days a week in London) Type: Full-time Salary - £130k Maximum Client They are forward-thinking technology consultancy that helps organisations solve complex problems with elegant, modern engineering. The team is built around curiosity, delivery excellence … finance, retail, healthtech, scale-ups, and the public sector to design and build high-impact digital products. The Role We’re looking for a Senior Java/Kotlin Engineer who thrives in solving real-world problems and building robust, scalable systems. You’ll work closely with cross ...

Senior Software Engineer (Java) – Portfolio Optimization | Fintech | London/Hybrid About My Client My client is a high-growth fintech company transforming the way capital markets operate. Their mission is to make global financial systems safer, more efficient, and more open, using advanced technology and deep domain … develop intelligent solutions that optimise portfolios, reduce risk, and unlock access to more diversified capital. About the Role My client is seeking a Senior Software Engineer to join their Portfolio Optimization team — a core group responsible for building the technology that drives their balance-sheet and exposure-management ...

Senior Backend Engineer (strong Java, SQL, AWS) Manchester (Hybrid – 3 days in office) £110,000 + 8% annual bonus + equity options Must be eligible for NPPV3 clearance (UK residency typically 3+ years) - please apply only if you meet this criterion About the Role We’re partnering … fast-growing public safety SaaS organisation that’s building its UK engineering presence from the ground up. This is one of the first senior technical hires in the UK, and it's a pivotal role in shaping architecture, influencing engineering culture, and driving future growth. As the UK team ...

Senior Java Developer - Quant Trading Firm - London - Up to £130k + bonus Durlston Partners is working with a leading Quant Trading firm that is looking for a Senior Java Developer to join their team. You'll work closely with traders and quants to design and build … throughput systems, optimise performance, and solve complex engineering challenges in a fast-paced financial environment. What You'll Do Design and build low-latency Java trading systems and execution platforms. Optimise code for high throughput and minimal latency. Enhance market connectivity and order management systems. Ensure system reliability through ...

Role: Senior Java Developer Location: Manchester once every two weeks Flexibility going forward: once every two weeks, Flexible. Salary: £65,000 - £80,000 + bonus We are looking for Java Developers from senior to Principal level to develop the next iterations of our market-leading software. … leading software utilising tools and practices such as pair programming, automated testing and continuous integration all supported by DevOps technologies Tech stack including: Strong Java development skills + experience CI/CD tooling, automated builds, Spring/Spring Boot Advocate for Agile and the ability to drive Agile delivery ...

Senior Java Software Engineer - User Interfaces Location: Guildford, GU1 4QU Salary: Circa £50K - £85K per annum, DOE + Benefits, Bonus and Relocation Contract: Full time, Permanent Benefits: Competitive salary, Annual bonus, Private medical insurance, Membership fees to professional organisations, such as the IET or BCS, 8% employer ...