Senior Java Developer jobs in Kensington

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

3rd Line Back End Developer Methods Business and Digital Technology Limited Methods is a £100M+ IT Services Consultancy who has partnered with a range of central government departments and agencies to transform the way the public sector operates in the UK. Established over 30 years ago and UK-based,

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

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

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

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

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

hackajob is collaborating with American Express to connect them with exceptional professionals for this role. You Lead the Way. We’ve Got Your Back. With the right backing, people and businesses have the power to progress in incredible ways. When you join Team Amex, you become part of a global and d

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

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 en

We are looking for an experienced Senior Java Developer to join an exciting opportunity in Ireland or the UK . If you are passionate about building scalable applications and working with modern technologies, this could be the perfect role for you! Position: Sr. Java Developer Location: Ireland / UK

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

Who We Are Galaxy is a global leader in digital assets and data center infrastructure, delivering solutions that accelerate progress in finance and artificial intelligence. We believe that blockchain and digital asset innovation will transform how value moves through the world – and we’re building t

Introduction At IBM CIC, we deliver deep technical and industry expertise to a wide range of public and private sector clients in the UK. A career in IBM CIC means you’ll have the opportunity to work with visionaries across multiple industries to improve the hybrid cloud and AI journey for the most

3rd Line Back End Developer Methods Business and Digital Technology Limited Methods is a £100M+ IT Services Consultancy who has partnered with a range of central government departments and agencies to transform the way the public sector operates in the UK. Established over 30 years ago and UK-based,

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

About Us: Founded on the grounds of innovation – iXceed Solutions is an ISO certified, leader in Talent and Digital recruitment solutions, serving Fortune 100 companies globally. About the Role We are seeking a Java with Kotlin Developer with 5–7 years of experience in backend development using mode

Tracsis

Junior Java Developer Hybrid - London Our talented people are creating the technology of the future. From scheduling to maintenance to keeping people safe, 2.7 million people are helped by our software daily. Technology makes it possible; people make it happen and you could be part of that. The Trac

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‑