Senior Java Developer jobs in Westminster

Key Responsibilities 1. Full Stack Development Develop scalable, secure, and maintainable applications using Java (Spring Boot) for backend and React.js for frontend. Architect and implement RESTful APIs and microservices. Collaborate with cross-functional teams to deliver high-quality software solu

Senior Java Developer x 3 | £825 - £850 We're working with a prestigious Tier-1 Investment Banking powerhouse on this exciting opportunity. Step into a high-octane environment to spearhead the evolution of business-critical systems within the Equity Derivatives space. This is a rare chance for elite

Job Description Develop and maintain robust Java applications using Spring and Spring Boot frameworks Design and implement microservices architecture to build scalable and efficient backend solutions Write clean maintainable and efficient code adhering to industry best practices Utilize Kotlin along

About the Job you are considering: We are seeking a skilled and experienced Senior Java Fullstack Developer to join our dynamic team. The ideal candidate will have a strong background in modern Java development and hands-on experience with cloud-native technologies, CI/CD pipelines, and testing fram

Discover your future at Citi Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you'll have the opportunity to grow your career, give back to your community and make a real impact. Job Overview FX R

Job Description: Java Full Stack Developer Location: Reading or Croydon, UK (2 days onsite) Type: Permanent Role Overview We are looking for a Java Full Stack Developer to work on a large-scale government project. You will be involved in developing and supporting cloud-based applications and working

Seeking a Specialist with hands on years of experience in Java Frameworks and Kotlin to develop scalable and efficient backend solutions using Microservices Spring and Spring Boot Job Description Develop and maintain robust Java applications using Spring and Spring Boot frameworks Design and impleme

About Us:- Net2Source Inc. is one of the fastest growing diversities certified global workforce solutions companies with an unprecedented YoY growth of over 100% for last 6 years working with Fortune 1000/Global 2000 across 34 countries and 5 continents including North America, South America, Europe

IDAM Back-end Java Developer - SC Cleared | £500 - £535 We're working with a global tech powerhouse delivering mission-critical digital transformation for the UK public sector on this exciting opportunity. We are seeking a high-caliber Senior Java Developer with deep IDAM expertise to spearhead a ma

Java Developer ANANYA IT SERVICES LTD is a rapidly expanding organization based in London. Our aim is to provide high quality business solutions tailored to individual customer requirements. Our work focuses on building in-house UI Design Systems (cross platforms) for growing and well-established co

Citigroup

FX Risk Java Developer - VP Citi’s Markets technology team is growing at lightning speed, and we’re looking for talented technologists to help build the future of global banking. Our teams are creating innovations used across the globe. As the world’s most global bank, Citi provides an opportunity t

Job Req Id 26953625 Location(s) London, England, United Kingdom Job Type On-Site/Resident Posted Apr. 09, 2026 ## Discover your future at Citi Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’

Description Statistical Programmer About Astellas Astellas is a global life sciences company committed to turning innovative science into VALUE for patients. We provide transformative therapies in disease areas that include oncology, ophthalmology, urology, immunology and women's health. Through our

Your role: Joining the Reporting product line, you would work as a member of a highly focused team. This team specialises in Java-based data engineering, designing and delivering large-scale ETL workflows on a lake house platform. You’ll be working with modern big data technologies to move, transfor

Job Description: CLP Architect (Senior Lead Java Developer) Location: London, UK Employment Type: Full-Time (Hybrid - 4 days onsite) About the Role We are seeking a highly skilled CLP Architect to join our team in London. This role is ideal for a seasoned professional with expertise in Java, Spring

CNC Programmer (CAD/CAM) Are you the right applicant for this opportunity Find out by reading through the role overview below. Coventry Shift: 08:00am – 16:30pm Mon – Fri + Overtime Hours: 40 hours per week, full time Permanent position £21.00 - £23.00 per hour About MNB Precision MNB Precision has

Understanding Recruitment

£130,000 - £130,000 /year

Have you got experience leading a team while remaining hands-on and technically involved? Senior Java Developer – FX Trading Salary: up to £130k bonus Location: London office 3 days a week We are delighted to be continuing our longstanding partnership with an FX Market Disruptor FinTech that has bee

Randstad

Java Messaging Engineer | eBond Trading Platform We are seeking a high-caliber Java Backend Developer to join the Booking & Messaging cell of a global electronic trading platform. This role is at the heart of the "eBond" ecosystem, managing high-throughput trade flows and external venue connecti

Java Developer / Software Engineer (Java Full Stack SC Clearance) Guildford / WFH to £65k Do you have strong Java skills combined with full stack development experience? You could be progressing your career at a scaling technology company that produces software solutions for the defence and civil av

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, integratio