17 of 17 Senior Java Engineer Jobs

Role Title: Senior Java Engineer Duration: 6 Months Location: Telford (2 days per week) Rate: £470 Per Day - Umbrella only Would you like to join a global leader in consulting, technology services and digital transformation? Our client is at the forefront of innovation to address the entire breadth of opportunities in the evolving world of cloud, digital … and platforms. Role purpose/summary As a Senior Java Engineer, you will lead remediation and modernisation of Java applications within the 'Ingres-only' pathway. Your work ensures secure, supportable solutions that decouple data from Ingres to relational platforms (e.g. Oracle/SQL Server), reducing operational risk and enabling future scalability. Key Responsibilities * Technical Leadership: o … Own design and implementation of Java remediation patterns for legacy services. o Guide engineering best practices across squads, including code quality, security, and performance. * Migration & Modernisation: o Identify and establish novel and accelerated Java application remediation and/or modernisation approaches (AI-led etc.) o Refactor Java applications to remove Ingres dependencies. o Implement secure data access More ❯

Job Title: Mid-Senior Java Engineer Location: London (Hybrid - 2-3 days in-office) Salary: Up to £85,000 per annum + Benefits Sector: Financial Services About the Role: We are seeking a Senior-Level Java Engineer to join a dynamic financial technology team in London. You will play a key role in developing … maintaining, and enhancing high-performance, scalable financial applications. This is a fantastic opportunity for an ambitious developer with experience in Java and a passion for the financial sector. The role follows a hybrid working model, with 2-3 days per week in the office. Key Responsibilities: Design, develop, and maintain high-quality Java-based applications for financial services. … in code reviews and provide constructive feedback. Stay updated with the latest financial technologies and industry trends. Key Requirements: Based in the London Area 5+ years of experience in Java development (Java 8 or later). Experience with Spring Boot, Microservices architecture, and RESTful APIs. Strong understanding of multi-threading, concurrency, and performance optimization. Knowledge of SQL and More ❯

Job Title: Mid-Senior Java Engineer Location: London (Hybrid - 2-3 days in-office) Salary: Up to £85,000 per annum + Benefits Sector: Financial Services About the Role: We are seeking a Senior-Level Java Engineer to join a dynamic financial technology team in London. You will play a key role in developing More ❯

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 one of the world’s most urgent challenges: helping Europe’s gas networks … GIS-led insights. Our platform 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. You’ll work with high-volume data … re after someone technically strong, environmentally motivated, and excited by solving complex problems that have a real-world impact. Essential: 7+ years’ backend engineering experience. Strong experience with modern Java (21+) and RESTful frameworks. Solid understanding of SQL and NoSQL databases. Cloud deployment experience (Azure preferred). Experience with CI/CD, containerisation, and testing frameworks. Clear communicator, able More ❯

Role Title: Senior Java Engineer Duration: 6 Months Location: Telford (2 days per week) Rate: £470 Per Day - Umbrella only Would you like to join a global leader in consulting, technology services and digital transformation? Our client is at the forefront of innovation to address the entire breadth of opportunities in the evolving world of cloud, digital More ❯

Currently hiring a Senior Java Engineer to join a fixed income trading team - a high-performing group responsible for building and maintaining global trading systems used daily by traders and middle office teams. These systems handle complex financial instruments, from bonds and repos to interest rate swaps and exotic portfolios, with a strong focus on performance, reliability … and traceability. Key Responsibilities: Design, develop, test, and deploy high-quality software using Java and related technologies Conduct code reviews, ensuring clean, maintainable, and efficient code Mentor junior developers and promote technical excellence within the team Analyse and resolve performance, scalability, and concurrency issues Contribute to Agile/Scrum processes, including sprint planning and retrospectives Maintain clear and comprehensive … technical documentation Key Requirements: Strong expertise in Core Java, including multi-threading and concurrency demonstrating self-sufficiency Proven experience in low-latency systems, performance tuning, and network programming Familiarity with high-performance messaging systems Proficiency with profiling, benchmarking, and memory analysis tools Working knowledge of Linux/Bash scripting and at least one other language (e.g. Python or C# More ❯

Senior Software Engineer (Java)- Remote (once a month in Oxford) 💰 Up to £65,000 + benefits We’re partnering with a fast-growing SaaS business that was one of the early innovators in bringing cloud-based software to market. Their platform is used by hundreds of thousands of users across 70+ countries, and with continued private-equity … Drive a culture of quality, learning, and innovation within the team. Tech Stack/Skills Proven experience mentoring developers. Strong background in SaaS development within online or enterprise environments. Java (and OOP principles), JUnit, JavaScript, jQuery, HTML, CSS Microsoft SQL Server/T-SQL, Spring, RESTful APIs, Bash scripting AWS (EC2, S3, RDS, Lambda, VPC, IAM), Tomcat CI/… CD pipelines (Jenkins, CircleCI, etc.) Experience designing and developing scalable systems and commercial web apps. Desirable: Bootstrap, Git, PostgreSQL Mobile app development (iOS/Android – Swift/Java) Experience with Agile/Scrum delivery What’s in it for you Remote working and once a month in office with the team in Oxford Up to £65,000 depending on More ❯

Senior Lead Software Engineer (Java, Python, AWS) Do you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast-paced, collaborative, inclusive, and iterative delivery environment? At Capital One, you'll be part of a big group of makers, breakers, doers and disruptors, who solve real problems and meet … real customer needs. We are seeking Full Stack Software Engineers who are passionate about marrying data with emerging technologies. As a Capital One Senior Lead Software Engineer, you'll have the opportunity to be on the forefront of driving a major transformation within Capital One. What You'll Do: Lead a portfolio of diverse technology projects and a … code Collaborate with digital product managers, and deliver robust cloud-based solutions that drive powerful experiences to help millions of Americans achieve financial empowerment Utilize programming languages like JavaScript, Java, HTML/CSS, TypeScript, SQL, Python, and Go, Open Source RDBMS and NoSQL databases, Container Orchestration services including Docker and Kubernetes, and a variety of AWS tools and services More ❯

Role: Senior Java Developer Location: Manchester Flexibility going forward: 2-3 days working from home? Salary: £40,000 - £60,000 Join a leading fin-tech company in supporting one of the worlds most important finance institutes. As a Mid level or Senior Developer, you will be responsible for working on some of the major flagship and most … important projects. You will be joining a workforce of the very best Java talent in fin-tech team designing and developing cutting edge systems for the industry. You will work closely with our product managers, testing team and other internal teams to deliver high quality software solutions for customers around the world. Why would you like to work for … this company as a Java Developer? Round table environment, where contributing to product ideas and development best practice is more than encouraged For the fin-tech industry, this company reduces the 'red tape' and is committed to its agile journey A digital lead organisation who strive to improve their products to suit the customer needs Build and deliver products More ❯

Job Title: Senior Engineer with Node.js and Python or Back End (Java and ideally Kafka) Max rate: £537/Day on Umbrella Location: Croydon (Hybrid) Clearance required: SC Transfer (Active SC only ) Contract Duration: 05 months Experience of Java Experience of Spring framework or equivalent. Knowledge of software design patterns and when to apply them Excellent More ❯

Job Summary: We're looking for a talented Senior Software Engineer to be a key contributor to developing cloud-based services that will drive the future of the business. You will join our small and dynamic Cloud Services team, using the latest technology and tools to build high-quality, cross-platform solutions that are robust, scalable, and efficient. … You will also collaborate with a versatile cross-functional team to make a significant impact on our product offerings. Responsibilities: Senior Software Engineer is a technical role, with responsibilities ranging from solving technical problems to creating design documents and implementing complex designs. Directly responsible for consistently delivering scalable, production-ready back-end/server code in Java … software paradigms, and engineering process improvements. Qualifications: Demonstrates strong software design skills (REST API design, extensible design while coding, good at DB modelling, proactive in error handling); expert in Java/Spring/Hibernate skills. 5+ years of software engineering experience, including a successful track record developing customer-facing SaaS/PaaS products. 3+ years working experience in core More ❯

We are hiring an experienced Senior Software Engineer with deep expertise in ultra-low-latency, high-throughput Java systems . This is a role for someone who builds systems that push performance boundaries, not just enterprise-grade services. You'll join a specialist engineering group designing fault-tolerant, sub-40s latency pipelines, shaping architecture decisions and solving … complex technical challenges that require first principles thinking. What You'll Be Working On Designing and optimising high-performance Java services with lock-free, zero-allocation and low-GC approaches. Hardware-aware optimisation including CPU architecture, cache behaviour, kernel tuning, core pinning and memory layouts . Building and improving ultra-low-latency messaging pipelines (Multicast, TCP, IPC). Working … directly with senior engineering leadership on system architecture and performance strategy. Driving technical direction and mentoring senior members of the team. What We're Looking For 10+ years professional engineering experience with core Java in latency-sensitive environments. Strong knowledge of: Ring buffers Off-heap/zero-allocation techniques IPC and high-performance networking Linux kernel optimisation More ❯

We are hiring an experienced Senior Software Engineer with deep expertise in ultra-low-latency, high-throughput Java systems . This is a role for someone who builds systems that push performance boundaries, not just enterprise-grade services. You'll join a specialist engineering group designing fault-tolerant, sub-40μs latency pipelines, shaping architecture decisions and solving … complex technical challenges that require first principles thinking. What You'll Be Working On Designing and optimising high-performance Java services with lock-free, zero-allocation and low-GC approaches. Hardware-aware optimisation including CPU architecture, cache behaviour, kernel tuning, core pinning and memory layouts . Building and improving ultra-low-latency messaging pipelines (Multicast, TCP, IPC). Working … directly with senior engineering leadership on system architecture and performance strategy. Driving technical direction and mentoring senior members of the team. What We're Looking For 10+ years professional engineering experience with core Java in latency-sensitive environments. Strong knowledge of: Ring buffers Off-heap/zero-allocation techniques IPC and high-performance networking Linux kernel optimisation More ❯

We are hiring an experienced Senior Software Engineer with deep expertise in ultra-low-latency, high-throughput Java systems . This is a role for someone who builds systems that push performance boundaries, not just enterprise-grade services. You'll join a specialist engineering group designing fault-tolerant, sub-40s latency pipelines, shaping architecture decisions and solving More ❯

We have an exciting and rewarding opportunity for you to take your software engineering career to the next level. As a Senior Lead Software Engineer at JPMorgan Chase within the Global Technology division, you will serve as a seasoned member of an agile team to design and deliver trusted market-leading technology products in a secure, stable, and … responsibilities Work with key stakeholders in Sales, Trading, QR, Operations and others globally to ensure the Secondary platform meets business requirements. Directly contribute towards the ongoing efforts to re-engineer & re-architect the existing Secondary platform to make it performant, truly highly available, stable, efficient, and scalable. Lead the effort & contribute towards the identification and implementation of opportunities to … and proficient advanced experience. Ability to solve complex problems and a track record of high performance and delivery. Strong hands-on experience implementing globally distributed real-time systems using Java and Hands-on practical experience in system design, application development, testing, and operational stability Experience in developing, debugging, and maintaining code in a large corporate environment with one or More ❯

great opportunity to join a growing team on exciting projects and to grow your own skills within the business - Skill and Experience; Strong proficiency in software programming in Core Java and/or C++ A proven record in delivering software product on several complex systems Be able to demonstrate experience and knowledge of all aspects of the Software Development … Employees' Choice Awards, 2022, and most recently receiving three accreditation gold standard awards with Investors in People! "Interesting work. Good work-life balance. Employees made to feel valued." Software Engineer, 5 Dec 2022. Glassdoor review. "Promotes and believes in a good work/life balance interesting work on most programmes Encourages internal mobility. Offers good development/training opportunities … Principal Systems Engineer, 19 Dec 2022. Glassdoor review. True advocates of ED&I as an Equal Opportunity Employer! With over 10 Networking groups and communities across the business advocating Equity, Diversity and Inclusion. Enhanced parental leave: Offers up to 26 weeks for maternity, adoption and shared parental leave. Enhancements are available for paternity leave, neonatal leave and fertility testing More ❯

around the world Qualifications & Experience Essential Attributes: 10+ years of experience in Software development of complex applications. Excellent understanding of design principles and considerations, best practice 10+ years of Java and C++ development experience History of applying best practices, code reviews and quality checks Familiarity with build pipeline tools and technologies such as Gitlab Must be self-motivated but More ❯