12 of 12 Java Developer Jobs in the City of London

Principal Java Developer - Consultancy

Hiring Organisation
Client Server
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Principal Java Developer/Software Engineer (Java SpringBoot AWS) London/WFH to £120k Are you an experienced Java Developer, with technical project leadership and client facing skills? You could be progressing your career at a global technology consultancy. What … your family, including mental health Travel Insurance Charitable giving Gym membership for you and your family Flexible holiday scheme Your role: As a Principal Java Developer you will lead client projects, often long term technical transformations, designing, developing and delivering a range of projects for clients, mainly within ...

Full Stack Java Developer (React.js)

Hiring Organisation
Falcon Smart IT (FalconSmartIT)
Location
City of London, London, United Kingdom
Title: Full Stack Java Developer (React.js) Job Location: London, UK/Hybrid Job Type: Permanent Job Description: Java Developer: Java Full Stack with React and Gen AI, Docker/Kubernetes, Terraform/Cloud Formation, MQ/, Datadog/AppDynamics/Dynatrace. ...

Principal Java Developer - Consultancy

Hiring Organisation
Client Server
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP 100,000 Annual
Principal Java Developer/Software Engineer (Java SpringBoot AWS) London/WFH to £120k Are you an experienced Java Developer, with technical project leadership and client facing skills? You could be progressing your career at a global technology consultancy. What ...

Java Developer Trading Platform - Hybrid

Hiring Organisation
VERTECH GROUP (UK) LTD
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP 100,000 Annual
Java Developer Crypto Exchange Connectivity (Low Latency) Location: 3-4 days in London, 1-2 days from home Salary: Circa £100,000 £130,000 + bonus + benefits Java Developer required for a small trading technology firm focused on crypto markets, working directly on exchange connectivity ...

Java Developer - Payments

Hiring Organisation
Crisil
Location
City of London, London, United Kingdom
Role Summary We are looking for an experienced Java Developer with strong exposure to the Payments domain to design, build, and enhance applications supporting global payment processing and modernization programs. The role involves developing scalable, high-performance backend components, integration services, and APIs that enable real-time payments … message transformations, reconciliation, and workflow automation. The ideal candidate will have hands-on experience with Java-based payment systems , an understanding of SWIFT/SEPA/ACH/RTP ecosystems, and familiarity with transaction life cycles from initiation to settlement. The role offers an opportunity to work closely with ...

Senior Java Developer (Low-Latency Payments Systems)

Hiring Organisation
RE Partners
Location
City of London, London, United Kingdom
their goals. The 3 G’s of RE: “Get Shit Done.” “Get Over Shit.” “Give a Shit.” We are seeking an experienced and opinionated Java Developer to join our high-performing engineering team, working on l ow latency , high-throughput systems in the payments processing domain. This hybrid … offers the opportunity to build scalable, real-time services using modern technologies. If you’re passionate about performance, have strong Core Java and SpringBoot expertise, and thrive in a collaborative yet opinionated engineering culture, we want to hear from you. Key Responsibilities : Design, develop, and optimize low-latency, high ...

Graduate / Junior Developer, Python, Linux, C#, Java - London

Hiring Organisation
Noir
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
£30,000 - £40,000 per annum
Graduate/Junior Developer, Python, Linux, C#, Java - London (Teck stack: Graduate/Junior Developer, Python, Linux, C#, Java, .NET 10.0, C#, J2EE, Agile, TDD, BDD, Graduate/Junior Developer) Since 2006 our client's revolutionary marketing software platform has been helping businesses all over … customers by delivering inbound experiences that are relevant, helpful, and personalized. Having recently launched in the UK, they looking to hire Graduate/Junior Developer (Python, Linux, C#, Java)) to become a part of their ever-growing family. They believe that individual developers are in the best position ...

Senior Java Developer - Low Latency

Hiring Organisation
HCLTech
Location
City of London, London, United Kingdom
intuition with that, and some modern messaging like Aeron or ZeroMQ." 12+ years of experience. - 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 … 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 ...

Senior Java Developer - Market Connectivity

Hiring Organisation
HCLTech
Location
City of London, London, United Kingdom
Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of $13+ billion. Senior Java Engineer – Market Connectivity You have strong core Java development with market connectivity experience You have strong experience with multi-threading, messaging & ZeroGC techniques … know how to use memory profilers and look at heap dumps You are degree educated, Computer Science preferred or any STEM Minimum Java experience: 10 years Preferred Skills: TransFICC Experience, highly desirable Hot Code path optimization, Off-heap memory management techniques JVM internals, tuning for low-latency Low-latency ...

Java Developer

Hiring Organisation
Sanderson Government and Defence
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
Up to £460 per day + Inside IR35
variety of sources, ensuring that different data sets can be effectively combined and analysed. They can also utilise programming languages such as Python, Java or SQL and tools such as Apache Spark or in this instance LakeFS, for data processing and management. Useful - R, Apache Spark. Very useful - Python ...

Java Developer

Hiring Organisation
Sanderson Government and Defence
Location
City, London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 460 Daily
The ability to work with data throughout its lifecycle, from collection and storage to processing and analysis. Data developers are responsible for designing, implementing and maintaining the systems and infrastructure needed to handle large volumes ...

Senior Fullstack Developer (Java+React)

Hiring Organisation
Altimetrik
Location
City of London, London, United Kingdom
international environment, focusing on building secure, scalable, and innovative financial systems that power global banking services. We are currently looking for a Senior Fullstack Developer (Java+React) to join the team. The role involves working in a modern microservices architecture and contributing to the development of scalable and efficient applications. … ideal profile is a FullStack Developer with both backend and frontend expertise. The expected skill distribution is approximately 60% backend (Java/microservices) and 40% frontend (React), with flexibility depending on experience. Requirements : Java, Spring Boot, Microservices, Node.js, TypeScript, React. Location: London (hybrid) 🔥 We build real ...