18 of 18 Part-Time Senior Java Developer Jobs

Are you interested in sustainable energy and saving the world? Have you got experience coding with Core Java, Multithreading, Concurrency and Low Latency? FULLY REMOTE Senior Java Developer – Sustainable GreenTech Project Salary: Up to £130k Location: fully remote in the UK I am partnered with a … unique energy software platform that is helping consumers transition towards a sustainable future. They are in search of enthusiastic and knowledgeable Senior Java Developers of all levels with a strong comprehension of the Core Java principles to join their growing team. This is a brilliant opportunity for … and suppliers with easy access to energy trading by producing energy as a service as opposed to a commodity. You will be a fantastic Senior Java Developer if you have worked with Core Java and have extensive experience with Multithreading , Concurrency and Low Latency , because you More ❯

Do you have a PhD in Computer Science? FULLY REMOTE Senior Java Developer – Sustainable Energy GreenTech Salary : £100-140k + benefits Location : fully remote from anywhere in the UK I am partnered with a unique energy software platform that is helping consumers transition towards a sustainable … future by producing energy as a services. They are in search of an enthusiastic and knowledgeable Senior Java Developer with a strong comprehension of the Core Java principles alongside a deep understanding in Advanced Computer Science: Algorithms Graph theory Interval graphs Compiler theory You will be … a fantastic Senior Java Developer if you have worked with Core Java and have extensive experience with Multithreading , Concurrency and Low Latency , because you will be building your own frameworks and designing new databases from scratch. Your role as a Senior Java Developer More ❯

Are you an experienced Java Developer looking for a new challenge and to work for an AI startup with an important mission? 🚀 Senior Java Developer – Revolutionising Data Security 🚀 Location : Hybrid working 1-3 days a week in central London (King’s Cross) Salary … data privacy and security, amidst the GenAI boom. This is an incredibly exciting time to join the team as they are growing with multiple Senior Java Developers as well as DevOps Engineers. As a Senior Java Developer, you will: Have 5+ years experience as a … Software Engineer Experience developing with: Java, Spring Boot, Microservices, Kafka (or other messaging queues e.g. RabbitMQ), AWS, Docker, Kubernetes A desire to be part of an important mission Be adaptable to working in the buzzing, dynamic fast-paced environment of an early-stage scale-up They are avid promoters More ❯

We're Hiring: Senior Java Developer (Backend Focus) 🚀 Role: Senior Java Developer Model: Onsite Bournemouth Compensation: Up to 77k DOE + bonus + other benefits Are you passionate about building robust backend systems and delivering high-quality, scalable applications? We're looking for a … Senior Java Developer to join an exciting, collaborative project team working at the cutting edge of backend engineering. You'll play a key role in designing , developing , and launching new features that make a real impact. This is a great opportunity to work with the latest Java technologies (Java 11+, JDK 17) and gain experience in a cloud-native, microservices-driven environment. What you’ll be doing: Design clean, scalable backend systems with a strong focus on best practices. Collaborate with a talented engineering team to design, build, and maintain high-quality applications. Maintain code More ❯

Senior Java Developer Global Tech Giant Up to £95k 2-3x a week in Shoreditch Are you a Senior Java Developer eager to lead the charge in innovation for one of Silicon Valley’s largest tech giants? This is a rare opportunity to … the future of how the business operates globally. Backed by significant investment, this giant has expanded rapidly in the UK and is seeking multiple Senior Developers to lead new squads focused on greenfield projects. They have a strong engineering culture in the London office, and as their Senior Developer, you’ll work with Java (17+), SpringBoot, Kotlin and NoSQL databases . They’ve got their own internal cloud and toolings using Prometheus and Grafana. As their Senior Developer, you’ll be: A key advocate for best coding practice, standards, and innovation. TDD approach More ❯

please get in touch with at UKI.recruitment@tcs.com or call TCS London Office number 02031552100 with the subject line: “Application Support Request”. Role: Senior Java Developer Job Type: Permanent Location: Glasgow, UK (Hybrid) Number of hours: 40 hours per week – full time Are you passionate about … and work on a real time multi-million transaction processing platform ? this is the opportunity for you… We have an exciting role for you – Senior Java Developer Careers at TCS: It means more TCS is a purpose-led transformation company, built on belief. We do not just … access to endless learning opportunities. Work closely with the range of teams within the business to bring products to life. The Role As a Senior Java Developer you will be part of a global front-office technology team that builds and supports the platform enabling this market More ❯

Senior Java Developer/Java Team Lead - Bristol - New - (REFBJ19) Bristol/Hybrid Working £70k - £80k + Benefits + Bonus A leading provider of SaaS solutions requires a Senior Java Developer/Java Lead. The ideal candidate will have a strong background … in software development coupled with the following: Strong (and current) experience in both Java and Springboot, ideally coupled with experience in cloud platforms such as AWS or Azure. Familiarity with delivering mission-critical, high-volume, near real-time systems for clients. Strong professional communication skills, capable of representing engineering More ❯

Role: Senior Java Developer Location: Central London ( Bank/Moorgate) Hybrid-working Model Senior Level Java Developer is required to join one of the UK's leading Financial Software houses, located in the heart of London. My client has been established for over … years and works with some of London's biggest names, such as Aviva, Lloyds Bank and Amazon. As experienced Java Developer, you will work on the development and maintenance of their financial SaaS products, as well as Greenfield projects. You will be expected to have a proven track … record working to best practices and with the latest Java versions ( 11 - 21), Microservices, Spring, Springboot, AWS, Docker, Kubernetes, CI/CD Pipelines, TDD and multi-threaded applications. Requirements: 1st - 2:1 Bachelor's degree in Computer Science, Software Engineering, or a related field. 3 - 7 years of Java More ❯

Senior Java Developer (Architecture Experience) - £80,000 + Bens Synechron is a global consultancy Laser-focused on accelerating digital initiatives in financial services. With over 14,500 members of staff across 19 countries and a unique mix of end-to-end digital, business and technology services, we … relationship-driven approach, our clients come to us with problems that need genuine thought, intelligence and knowledge. We are looking for a hands-on Senior Java Developer with some architectural experience to join our growing team in Belfast. You will be part of a global dynamic team … the prod support on any issues and taking it to logical closure with actions. Design - Develop and implement high-level architecture and design for Java-based applications, ensuring scalability, performance, and security. Documentation - Create comprehensive design documentations, walkthrough the same with the team SMEs , arrive on an option and More ❯

Senior Java Developer - Gaming Industry - Hybrid Working - London - Up to £100,000 p/a Christopher Ali are recruiting on behalf of a well backed games provider targeting the Asian gambling market. They develop their own games and provide a white label platform which also aggregates a … number of 3rd party games suppliers together, supplying games and bespoke solutions to a numerous large operators in the market. As a Senior Java Developer, you will work at all stages of the product lifecycle from requirements capture, through design and implementation, to system testing and integration. … remote work based out of the London office. Mandatory skills and experience: Excellent problem solving and communication skills. At least three years of commercial Java development experience, with some experience in real money and/or social gaming industries. Significant technical contribution to complex software products. A degree in More ❯

Senior Java Developer - Quarkus, Banking £ Market rate (Inside IR35) London/Remote (Must be UK-based) 6-month contract I am currently working with a leading Consultancy who require a Senior Java Developer with Quarkus experience to work for their client within the financial … services. Must-haves for the role: Proven expertise within Java Development. Working knowledge of Quarkus. Working background within the Financial Services/Banking sector. Nice to have: Availability to start ASAP. Flexibility on hybrid working. What you need to do now If you're interested in this role, click More ❯

Senior Java Trading Developer – VP Level Location: Glasgow (Hybrid – 2 days in-office) Type: Permanent Posted: 1st May 2025 The Opportunity We’re hiring a Senior Java Developer (VP level) to join a lean, highly skilled team building the integration and orchestration layer of … and technical mentoring. What You’ll Be Doing Architecting and developing key components of a real-time, low-latency trading system Writing high-performance Java code with a strong focus on multi-threading and concurrency Being the team’s go-to engineer for technical decisions, design challenges, and code … Trusted contributor in technical discussions, reviews, and design sessions Working independently and demonstrating initiative—no hand-holding needed Must-Have Technical Skills Strong core Java with deep understanding of multi-threading, concurrency, and performance tuning Proven experience building real-time or millisecond-latency systems Confidence in designing scalable, maintainable More ❯

please get in touch with at UKI.recruitment@tcs.com or call TCS London Office number 02031552100 with the subject line: “Application Support Request”. Role: Senior JAVA Camunda Developer Job Type: Permanent Location: London Ready to utilise your skills in JAVA, GCP and Camunda? Careers at TCS … bring products to life. Work with customers and identify opportunities to support their strategy and improve their processes across functions. The Role: As a Senior JAVA& Camunda Developer you will be directly working with Technical Leads in Compliance IT domain and working on the development and implementation … you will have opportunity to work first hand with multiple stakeholders across different tech stack like Cloud, AI etc. Key responsibilities: Design & develop in JAVA on GCP Platform. Performance tuning and optimization. Exploring new capabilities and components & doing PoC for assessment. Debugging & troubleshooting. Your Profile Essential skills/knowledge More ❯

Senior Java/Scala Developer Glasgow - 3 days onsite 12 month contract (InsideIR35) Nord Group is partnered with a prestigious investment bank based in Glasgow, who are looking for a Senior Java/Scala Developer, to join an exciting programme within their Treasury, Planning … through standards, reviews, and testing. Contribute to cloud migration for the Treasury platform. Requirements: 3-5 years software development experience. Hands-on expereince with Java, Scala, Spark, Beam and SQL (Sybase) Strong understanding of multi-threading and high-volume server-side development. Familiarity with Snowflake, PowerBI, and cloud platforms More ❯

This is a brilliant opportunity for a Senior Java Developer to join a market leading cloud communications company based in Central London who are looking to add to their growing Engineering team! This business provides real-time insights that enhance their client's profiles, in turn helping … drive revenue growth. Your responsibility as a Senior will be hands on, building new features and driving the growth of the business, whilst also taking on code review and mentorship responsibilities. The position will be hybrid, 1 day in the office a week, with a salary of up to … 90k on offer. Required skills: Java Springboot Microservices Rest APIs Docker/Kubernetes AWS If you're interested in this position please apply with your updated CV as soon as possible, interviews will be taking place shortly. Unfortunately this position won't be providing sponsorship. More ❯

have a systematic equities division, which requires cutting edge algo trading to augment its processes. They are looking to hire a Tech Lead Algo Developer to join their Systematic Trading Department where you would help develop trading algorithms in Java frameworks, and containerize microservices in Kubernetes. Tech Stack … Java, Kubernetes, SQL, Python This firm operates on a hybrid model, and will offer the engineer to come into a high performing systematic equities group, and specialise in this asset class. Please do apply if this sounds of interest. More ❯

Media, Retail and CPG, and Public Services. Consolidated revenues as of $13+ billion. DETAILED RESPONSIBILITIES - Lead the development, testing, and maintenance of low-latency Java applications. - Collaborate with cross-functional teams to gather requirements and design system architecture. - Optimize application performance and troubleshoot latency issues. - Mentor junior developers and … industry trends and integrate relevant technologies into projects. SKILL REQUIREMENTS - Bachelor's degree in Computer Science, Engineering, or a related field. - Proven experience in Java development, with a focus on low-latency systems. - Strong understanding of multithreading, concurrency, and performance optimization. - Experience with frameworks and libraries such as Spring More ❯

Location: London Hybrid mode We are looking for a highly skilled Senior EFX Developer to join our technical team specializing in electronic trading solutions. We seek a professional with extensive experience in low-latency application development and solid knowledge of financial markets, particularly in Foreign Exchange (FX) . … Technical Requirements: Core Java 17+ Advanced low-latency development techniques (zero GC, copy-free) Performance tuning at JVM level, garbage collection (GC) , and OS-level optimization FIX protocol Experience with low-latency messaging technologies : Aeron, SBE, Protobuf, Agrona, Chronicle Functional understanding of financial markets, especially: FX products : Spot, Forward More ❯