Java Developer - Belfast, Northern Ireland

Company IconRandstad Digital
Location IconBelfast

Role: Java DeveloperType: PERM/FTELocation: Belfast, Northern IrelandWorking Model: HybridCore Responsibilities:Develop:...Read More>>.

Posted: September 14th, 2026
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Full Stack Java Developer – Fintech

Company IconQuant Capital
Location IconLondon

Overview In this role you will build and deliver front-end and back-end solutions for a tech-driven trading platform. You will work closely with cross-functional teams to shape product offerings and impact business outcomes. The environment...Read More>>.

Posted: September 14th, 2026
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Core Java Developer – Fintech

Company IconQuant Capital
Location IconLondon

Overview In this role you will build and evolve a high-performance Java platform for a pioneering fintech trading firm. You’ll work within an agile, test-driven environment to deliver business functionality with visible impact on the prod...Read More>>.

Posted: September 14th, 2026
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Junior Java Developer –Python, Ruby, Fintech50

Company IconQuant Capital
Location IconLondon

Overview As a Junior Java Developer at Quant Capital, you join a fintech-focused tech team working with a high-profile client. You’ll contribute across the stack, emphasize core Java development, and support release management and infrast...Read More>>.

Posted: September 14th, 2026
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Java Developer - Trading Systems

Company IconClient Server
Location IconNewcastle upon Tyne

Overview As a Java Developer in a growing professional services firm, you will help transform a complex C++ legacy trading system into a modern Java-based solution. You’ll work closely with Front Office trading teams and fellow engineers...Read More>>.

Posted: September 14th, 2026
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Senior Full Stack Java Developer

Company IconVersion 1
Location IconLondon

Overview In this role you will design, develop, test and maintain cloud-based software within Version 1’s Digital & Cloud Practice. You will provide technical leadership to deliver scalable, secure solutions in agile environments and coor...Read More>>.

Posted: September 14th, 2026
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Senior Java Developer - London - Fintech

Company IconAdaptive Financial Consulting
Location IconLondon

Overview In this role you will design and develop Java-based trading software for Adaptive’s front-office technology platform. You will work within cross-functional teams to deliver high-performance solutions that underpin capital markets...Read More>>.

Posted: September 14th, 2026
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Java Developer in Test SDET - Finance Consultancy

Company IconClient Server
Location IconLondon

Overview In this role, you will join a global technology consultancy to deliver high-impact, client-facing testing work. You will shape and implement scalable test automation across modern platforms, helping teams raise quality and producti...Read More>>.

Posted: September 14th, 2026
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Frontend Java Developer – Fintech

Company IconQuant Capital
Location IconLondon

Overview In this role you will design and implement frontend features for a high‑growth tech-driven trading platform. You’ll work closely with cross‑functional teams to deliver business functionality and shape the product vision in a...Read More>>.

Posted: September 14th, 2026
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Core Java Developer Fintech High Freq Trading

Company IconQuant Capital
Location IconLondon

Overview In this role you will shape a high-performance, distributed Java platform used in a fast-paced FX trading environment. You’ll work with traders and developers to enhance a complex, low-latency, multi-threaded system, spanning fro...Read More>>.

Posted: September 14th, 2026
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eTrading Rates Strategist / Java Developer (Associate)

Company IconMcGregor Boyall
Location IconLondon

Overview In this front-office associate role within the Global Markets technology function, you will design and enhance algorithmic trading strategies and electronic trading platforms for Rates products. You’ll work closely with traders,...Read More>>.

Posted: September 14th, 2026
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Core Java Developer – Quant Trading

Company IconQuant Capital
Location IconLondon

Overview In this role you will build and evolve a high-impact Java platform for a fast-moving trading technology firm. You will work with cross-functional teams to design and implement business features that shape the product’s future. Th...Read More>>.

Posted: September 14th, 2026
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Core Java Developer– JVM, Multithreading, TDD, Spring

Company IconQuant Capital
Location IconLondon

Overview In dieser Rolle arbeiten Sie an einer hochverfügbaren, verteilten In-MMemory-Lösung im Hochfrequenzhandel, entwickeln Java-basierte Kernanwendungen und gestalten Systemarchitektur gemeinsam mit cross-funktionalen Teams. Sie arbei...Read More>>.

Posted: September 14th, 2026
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Senior Fullstack Java Developer

Company IconNexus Jobs
Location IconLondon

Overview In this role you lead the technical execution for a fintech-focused product, driving fast iterative development in an Agile environment. You work across iOS, Android and web platforms to deliver a high-performance app. You will coo...Read More>>.

Posted: September 14th, 2026
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Junior Core Java Developer Big Data Fintech

Company IconQuant Capital
Location IconLondon

Overview As a Junior Core Java Developer you will work hands-on on a greenfield B2C wealth management platform and ongoing client-modifications within a fast-paced fintech environment. You’ll collaborate with traders, sales and technologi...Read More>>.

Posted: September 14th, 2026
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Junior Java Developer – Fintech

Company IconQuant Capital
Location IconLondon

Overview In this Junior Java Developer role, you join a fintech startup building an innovative rewards platform for merchants and consumers. You will contribute to a greenfield project alongside a mobile app team, using Core Java and fronte...Read More>>.

Posted: September 14th, 2026
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Equities Technology (Java Developer) - VP

Company IconCitigroup
Location IconBelfast

Overview In this role you will advance Citi’s Global Market Data platform for the global equities business, focusing on low-latency data delivery and system enhancements. You will collaborate with cross-functional teams including producti...Read More>>.

Posted: September 14th, 2026
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Core Java Developer Big Data Trading

Company IconQuant Capital
Location IconLondon

Overview In this role you will work on a green-field, enterprise-grade platform in a fast-paced fintech environment. You will be hands-on with core Java, shape architecture, and mentor junior developers while collaborating with the CTO and...Read More>>.

Posted: September 14th, 2026
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Scala / Java Developer Fintech / Blockchain Cryptocurrency

Company IconQuant Capital
Location IconLondon

Overview In this role you will design, develop and deploy high-quality software for a greenfield fintech project focused on cryptographic technology and distributed protocols. You will work with cross-functional teams to prototype architect...Read More>>.

Posted: September 14th, 2026
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Low latency Java Developer

Company IconQuant Capital
Location IconLondon

Overview In this role you will help design and implement new trading algorithms in Java, support a greenfield low-latency trading platform, and ensure robust connectivity to financial exchanges. You will work closely with the Head of Tradin...Read More>>.

Posted: September 14th, 2026
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Senior C++ / Java Developer

Company IconLondon Stock Exchange Group
Location IconLondon

Overview In this role you design, develop, and deliver robust C++ and Java software for a defined product area, owning medium-to-large components. You collaborate with architects, product managers, and delivery teams to translate requiremen...Read More>>.

Posted: September 14th, 2026
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Java Developer Algo Trading 140k

Company IconQuant Capital
Location IconLondon

Overview In this role you will help build a brand-new, low-latency trading platform within a cross-asset team. You’ll work closely with the Head of Trading and the Quant Team to design and implement trading algorithms in Java, while also...Read More>>.

Posted: September 14th, 2026
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Java Development Manager – Fintech50

Company IconQuant Capital
Location IconLondon

Overview In this role you will lead a growing engineering group to evolve the core platform and greenfield systems for a global fintech in the invoice finance space. You will mentor a 15–20 person team, collaborate with product and suppor...Read More>>.

Posted: September 14th, 2026
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Liferay with Java Developer - Surrey

Company IconNexus Jobs
Location IconRedhill

Overview In this role you will design and develop Java Enterprise applications with a focus on Liferay portals, contributing to client projects from Surrey. You will work within a team, lead varying team sizes, and ensure delivery on time w...Read More>>.

Posted: September 14th, 2026
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Lead Java Developer (VP)

Company IconCitigroup
Location IconBelfast

Overview In this role you drive the technical design, development and optimization of Citi’s regulatory reporting framework and data pipelines, focusing on onboarding new regulations. You’ll lead a team of engineers within an Agile sett...Read More>>.

Posted: September 14th, 2026
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Java Developer – Algo Development Technology (Equities)

Company IconMillennium Management
Location IconLondon

Overview In this role you will build and evolve real-time, high-performance algorithmic trading systems for equities. You’ll collaborate with technologists and trading teams to enhance execution capabilities that support portfolio manager...Read More>>.

Posted: September 14th, 2026
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Core Java Developer-Contract – Trading

Company IconQuant Capital
Location IconLondon

Overview In this contract role, you will apply your Core Java expertise to a fast-paced trading tech platform, enabling high-scale, data-driven financial services. You’ll work within an agile, test-driven environment to design and impleme...Read More>>.

Posted: September 14th, 2026
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Lead C++ / Java Developer

Company IconLondon Stock Exchange Group
Location IconLondon

Overview As a hands-on senior engineer, you will design, build, and operate mission-critical FX market infrastructure using C++ and Java. You’ll own delivery of high‑performance components, shaping architecture and platform evolution. Y...Read More>>.

Posted: September 14th, 2026
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Full Stack Java Developer

Company IconVersion 1
Location IconBelfast

Overview As a Senior Kotlin Developer in Version 1's UK Digital & Cloud Practice, you will help design, build, and maintain cloud-based software with a focus on secure, scalable solutions. You lead technical work within an agile team, ownin...Read More>>.

Posted: September 14th, 2026
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Java Developer – Low Latency

Company IconQuant Capital
Location IconLondon

Overview In this role you will help design and build trading algorithms and a new low-latency platform for a London-based quant-backed trading house. You’ll collaborate with the Head of Trading and the Quant Team to translate trading requ...Read More>>.

Posted: September 14th, 2026
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Backend Java Developer (Python)

Company IconMethods Consulting
Location IconLondon

Overview In this Back End Developer role, you will diagnose and fix live production issues in Java-based systems, ensuring stable, well-tested changes. You’ll work with 2nd Line Operations, QA, and feature teams to triage incidents and de...Read More>>.

Posted: September 14th, 2026
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Java Developer – Equity derivatives- Hedge Fund

Company IconQuant Capital
Location IconLondon

Overview In this role you will help build and enhance the distributed pricing platform for Equity Derivatives, enabling continuous, firm-wide risk and P&L. You join a global, cross-functional team of developers and quants, contributing to g...Read More>>.

Posted: September 14th, 2026
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Core Java Developer Trading Technology

Company IconQuant Capital
Location IconLondon

Overview As a Senior Core Java Developer in a fast-paced post-trade tech environment, you will help shape the architecture and deliver integration solutions for a global trading business. You will design, prototype, and evaluate tools to su...Read More>>.

Posted: September 14th, 2026
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Java Developer- Algo Trading

Company IconQuant Capital
Location IconLondon

Overview In this role you will join a London-based quantitative trading firm to design and build low-latency Java-based trading solutions. You collaborate with the Head of Trading and Quant team to develop new algorithms and maintain existi...Read More>>.

Posted: September 14th, 2026
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Contract Senior Java Developer – Data/Marketmaking

Company IconQuant Capital
Location IconLondon

Overview In this contract role, you will build and enhance Java backend services that power trading and data workflows. You will own Python-based data ingestion tasks to support the data platform and work with PostgreSQL for data validation...Read More>>.

Posted: September 14th, 2026
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Manager, Java Developer, Solutions, Engineering, AI & Data

Company IconDeloitte
Location IconBelfast

Overview In this role you will design, develop and maintain Java-based solutions for Deloitte’s Technology & Transformation practice in Belfast. You’ll collaborate with cross-functional teams to deliver innovative, secure, and scalable...Read More>>.

Posted: September 14th, 2026
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Low latency Java Developer – Algo Trading

Company IconQuant Capital
Location IconLondon

Overview You will join a London-based quant prop trading firm to help design and build low-latency trading solutions. In collaboration with the Head of Trading and the Quant Team, you’ll develop algorithms in Java, contribute to a greenfi...Read More>>.

Posted: September 14th, 2026
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Contract Senior Java Developer – Data

Company IconQuant Capital
Location IconLondon

Overview In this contract role you will build and enhance Java backend services that power the data platform, while owning lighter Python ETL tasks to feed PostgreSQL data stores. You will work closely with a lean team to improve reliabilit...Read More>>.

Posted: September 14th, 2026
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Mid-Level Java Developer

Company IconHalliburton
Location Icon

Overview In this role you will design, develop, and maintain subsurface evaluation solutions for the energy sector as part of the Neftex Technical Services Team. You will contribute to building reliable Java-based desktop and web applicatio...Read More>>.

Posted: September 14th, 2026
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Senior Java Developer

Company IconWelocity
Location IconLondon

Overview The Senior Java Engineer at NCG will play a pivotal role in designing and implementing high-quality software solutions within the ITES sector. This role is crucial in driving technical innovation and ensuring the robustness, performanc...Read More>>.

Posted: September 13th, 2026
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Java Developer

Company IconMarshall Wolfe
Location IconIpswich

Java Voice Services DeveloperIpswich based- Candidates must be based in the UK, and a commutable distance from our client's office in Ipswich, Suffolk.Contract until March 2027Paying upto £360.00 per day (...Read More>>.

Posted: September 13th, 2026
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Senior Java Developer (6 month contract)

Company IconEPAM Systems
Location IconNorthern Ireland

First Derivative is driven by people, data, and technology, unlocking the value of insight, hindsight, and foresight to drive organizations forward. Counting many of the world's leading investment banks as clients, we help our clients navigate...Read More>>.

Posted: September 14th, 2026
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Senior Java Developer - Payments & Banking Microservices

Company IconOliver Bernard
Location IconLondon

Oliver Bernard is seeking two experienced Senior Java Developers to join a major retail banking transformation programme in London. You will work on large-scale payments and accounts platform, designing and building high-volume, cloud-native syste...Read More>>.

Posted: September 14th, 2026
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Senior Java Developers - Retail Banking

Company IconOliver Bernard
Location IconLondon

Contract: 12 Months Location: Canary Wharf, London – 3 days onsite / 2 days WFH We are currently seeking 2 experienced Senior Java Developers to join a major retail banking transformation programme wi...Read More>>.

Posted: September 14th, 2026
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Lead Java Developer - Transaction Reporting & Cloud

Company IconBounteous
Location IconGlasgow

Bounteous in Glasgow is seeking a Java developer to contribute to Transaction Reporting systems within a global Agile squad. You will work across the production lifecycle, implementing requirements from Operations users and participating in modern...Read More>>.

Posted: September 14th, 2026
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Low Latency Java Developer

Company IconHarrington Starr
Location IconLondon

London | Electronic Trading | Java | Low LatencyWe're working with a technology-driven trading business looking for a hands-on Java Developer to build and enhance high-performance electronic trading systems.You’ll...Read More>>.

Posted: September 14th, 2026
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Full-Stack Java Developer

Company IconNPAworldwide
Location Icon

Are you an experienced Senior Software Engineer or Technical Lead who enjoys remaining hands-on while guiding teams and shaping technical solutions? A leading specialist technical consultancy is looking for a Software Technical Lead to j...Read More>>.

Posted: September 14th, 2026
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Senior Java Developer - Credit Risk Technology, Vice President

Company IconCitigroup Inc.
Location IconLondon

The Senior Java Developer is a senior level position responsible for establishing and implementing new or revised application systems and programs in coordination with the Technology team. The overall objective of this role is to lead applicati...Read More>>.

Posted: September 15th, 2026
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Senior Java Developer | SQL Server | Central London (6m)

Company IconJas Gujral
Location IconLondon

Our Client in Central London is seeking a seasoned Java Backend Developer with 5+ years of experience and strong SQL Server expertise. You will contribute to backend systems, leverage Spring, and tackle algorithmic challenges within a large codeba...Read More>>.

Posted: September 15th, 2026
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Senior Java Developer - Post-Trade Market Data (London)

Company IconMorson Edge (Financial Services)
Location IconLondon

Morson Edge (Financial Services) in London is seeking a Senior Java Developer to join the post-trade engineering team on a contract basis. You will design and develop market data and reference data feeds, building robust Java/SpringBoot microservi...Read More>>.

Posted: September 15th, 2026
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