Java Developer jobs in Brentford

Role: Java L3 Support Engineer Location: Croydon, UK (2 Days in a week Onsite is required) Type: Permanent SC Eligible Must have skills: Extensive server-side, hands-on Java 8+ development experience with strong Spring, Spring Boot & Hibernate Strong understanding of Microservice architecture Ex

Grade E (Experienced Engineer, not Senior / Lead) Must‑Have Skills Java 9+ with strong experience (core Java, collections, exceptions, concurrency basics) Spring Boot / Spring Framework with 4+ years hands‑on development Experience building and consuming REST APIs Working knowledge of microservices‑

ECM Selection (Holdings) Limited

€45,000 - €70,000 /year

Requirements Must have: - A solid academic background with a degree in Computer Science or a similar subject. - Substantial commercial software engineering experience and familiarity with Agile development processes, CI/CD, and software testing strategies. - Strong coding skills, ideally in Java, a

Rapid Application Developer - JAVA London | Permanent Contract | Hybrid Margo is a Tech Native consultancy covering high value-added IT expertise for the market finance industry. We believe that the smart alliance between complex IT topics and the finance area brings the most challenging topics to o

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

Job Req Id 26953948 Location(s) London, England, United Kingdom Job Type Hybrid Posted Apr. 16, 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’ll have the o

Citigroup

We’re looking for an expert level server side engineer, to join one our high-impact teams inside Citi’s CTO organisation. You’ll sit within Developer Enablement, a group focused on innovation, developer platforms and internal tools used across the bank, where we experiment and ship fast, like a star

Java Developer {"description": " Job Introduction The IT team is responsible for the delivery, support and maintenance of Handelsbanken PLC's Core Banking systems encompassing Platforming, Risk, Payments, Lending and Customer Data. The team is currently in the process of expanding. We require an add

eFinancialCareers

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 We'r

Role Overview We are looking for experienced Java professionals to contribute to the development and ongoing support of large-scale, distributed systems. Must be Eligible for SC & have active SC Depending on your experience and interest, you will either focus on: Building new features and servic

Location - London Work mode - Hybrid Position - FTE & Subcon Budget - As per market JD – JAVA Security Analyst. What you will be doing: Investigate and resolve security findings across multiple versions of SFTC Ensure false positives are properly explained to central security team and approved a

I am hiring for Senior Android Developer - (Kotlin/Java/Performance Optimization) Location: London, UK (Hybrid) - weekly 2-3 Days in office Job Description: Designing and developing advanced mobile applications for the Android platform using Android SDK and Jetpack Compose Refactoring legacy C codeb

Rapid Application Developer - JAVA London | Permanent Contract | Hybrid Margo is a Tech Native consultancy covering high value-added IT expertise for the market finance industry. We believe that the smart alliance between complex IT topics and the finance area brings the most challenging topics to o

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 We'r

We are seeking a senior Java Backend Developer with expertise in complex projects with AWS infrastructure What difference will you make? You will help taking to the market a unique system to preserve information from biases What are we looking for? Qualifications Strong proficiency with application

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

Rapid Application Developer - JAVA London | Permanent Contract | Hybrid Margo is a Tech Native consultancy covering high value-added IT expertise for the market finance industry. We believe that the smart alliance between complex IT topics and the finance area brings the most challenging topics to o

Job Summary Seeking a Specialist with 5 to 7 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

Senior EFX Java Developer | £90,000 - £125,000 We're working with a leading global technology consultancy and FTSE-listed talent powerhouse on this exciting opportunity. Join a high-performance front-office team at a major financial institution to build the next generation of strategic EFX pricing a

Senior Java Developer - Contract - Kafka / AWS / Kubernetes 📍 Hybrid – 3 days onsite in London 💰 Up to £750 per day (Inside IR35) 📅 12-month contract (strong extension potential) We’re looking for a Senior Java Developer to join a high-performing team building large-scale, cloud-native platforms.