26 to 50 of 157 Java Developer Jobs in London

Java Developer ( SC Eligible/SC Cleared ) London, United Kingdom | Posted on 06/10/2026 Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million … user-centred design and agile delivery, and more to deliver innovative digital services that matter. Role Overview We are looking for a talented Java Developer to join our team and contribute to the design, development, and maintenance of high-performance applications. The ideal candidate has a solid understanding ...

Team Lead Java Developer – J2EE, Spring, Maven TomcatQuant Capital is urgently looking for a Java J2EE Developer to join our high profile client. Our client is a brand new investment firm driven by technology. They are well known in the media as solving … growth and stability. The project will be stabilising (and leading) the development of their web based platform which is built on Java and AWS EC2. This project will involve getting to know the platform and then adding greenfield functionality as well as brining the platform together. It has been ...

Role: Principal/Senior Java Developer – Elite FinTech Rate: Up to £750 per day Location: London Working Pattern: Hybrid Contract: Contract The Role They are looking for an exceptional Principal/Senior Java Developer to join a high-calibre engineering team, working alongside some … work on high-scale, business-critical technology at the intersection of financial services and next-generation digital assets. Requirements Strong commercial experience with Java Extensive experience developing server-side Java applications Strong software engineering fundamentals Experience working on complex, high-scale systems Strong understanding of application architecture ...

Java Developer – Algo Development Technology (Equities)Java Developer – Algo Development TechnologyAbout MillenniumMillennium is a global, diversified alternative investment firm, founded in 1989. Defined by evolution, innovation and focus, Millennium's mission is to deliver results for our investors. Our people are empowered with both independence … frameworks Deep understanding of market microstructure, pre-trade risk checks, limit frameworks, and regulatory requirements, and how they affect execution algorithm performance Expert-level Java skills, with extensive experience building low-latency, GC-aware, high-throughput distributed systems Strong understanding of distributed, event-driven architectures and messaging technologies such ...

Senior Java Developer (AWS, Microservices) Travel - Sussex Daily rate: £550 - £700 (inside IR35) Duration: 3 - 6 months Hybrid: 1 - 2 days Start: ASAP My new client is looking for a Senior Java Developer (AWS, Microservices) to join the team on a contract basis. You will play … role in designing, developing, and maintaining secure, scalable, and cloud-native Java microservices, primarily hosted on AWS, integrating with both internal and third‐party systems. Collaborating closely with other technical leads, platform engineers, QA, and product teams, you will follow best practices in software design, observability, security, and DevOps ...

Role Role : Principal/Senior Java Developer – Elite FinTech Rate: Up to£750 per day Location :London Working Pattern :Hybrid Contract :Contract They are looking for an exceptional Principal/Senior Java Developer to join a high-calibre engineering environment, working alongside some of the industry … strongest developers, architects and technical leaders. Responsibilities Design and develop high-performance server-side Java applications Work across both greenfield and complex brownfield environments Take ownership of significant technical challenges and drive solutions through to completion Collaborate with highly experienced engineers, architects and product specialists Translate complex business requirements ...

JAVA DEVELOPER - JVM Location: Central London Working Pattern: Hybrid 1-2 days in the office and the rest from home! Employment Type: Permanent Sector: Financial Services THE OPPORTUNITY We are working with a high-growth financial services technology scale-up that is entering an exciting phase of expansion. … This is an excellent opportunity for an experienced Java Developer with strong JVM knowledge to join a growing engineering team and take on a genuine technical challenge. You will work on high-performance, scalable systems while contributing to the continued development of the company's technology platform. ...

## Senior Fullstack Developer — Java or Kotlin, React and TypeScriptApplylocations: London: Manchestertime type: Full timeposted on: Posted Todayjob requisition id: JR100892Founded in Switzerland in 1968, Zühlke is owned by its partners and located across Europe and Asia. We are a global transformation partner, with engineering and innovation … chance to do it on a global scale and play a real role in shaping our exciting journey.**The role**As a Senior Fullstack Developer, you will be a hands-on member of a high-performing engineering squad, building and operating business-critical digital services.This is a backend ...

Core Java Developer Big Data Trading Quant Capital is urgently looking for a Java Developer to join our high profile client. Our client is a 30 man start up who have created a market leading product in the financial data market. Details of the full ideas … play a part in shaping the future of finance and be rewarded accordingly. This role is second to the CTO and allows a developer to take responsibility for code, mentor several juniors as well as architecture of the product. You will be completely hands on but have aspirations ...

Quant Capital is urgently looking for a Core Java Developer to join our high profile client. Our client is a 20 man financial software business who create a niche modeling and behavior monitoring application for financial markets. The Java code is very well written and well factored. … innovative start-up is pioneering a new concept for the financial markets. The most important part of their product will be the enterprise-grade java based technology platform. This is a unique green field development opportunity that will allow you to play a part in shaping the future ...

more. We do this by showcasing their talents, skills, and unique experience in an inclusive environment that helps them thrive. Job Title: Senior Java Developer Location: Bromley & London - Hybrid ( 3 days in office is essential) Contract: 12 months with possible extension for one more year. Rate … with the ongoing support and development of the Futures & Options and Collateral business for Global Markets, we are looking for a highly experienced, strong Java and Developer to join the technology teams in Bromley, London working on a range of applications for Collateral. The successful candidates should have ...

Tech: Core Java, JDBC, Kafka, HDFS, Docker, SQL, MultithreadingChallenge: Greenfield Big Data Analysis Platform Development in FSFirm: Well-known Financial Data fintech50 business, City of London, 10 man flat Dev TeamPay: 85k, Options, training budget, Pension, Life/Health, Some Work from HomeNO FINANCE EXPERIENCE NEEDEDCore Java Developer Big Data FintechQuant Capital is urgently looking for a Java Developer to join our high profile client. Our client is a 20 man start up who have created a market leading machine learning data analysis product in the financial data market. Details of the full ideas ...

Reference: BBBH3782_1780072076Job title: Java and Fidessa Developer - Equities TradingLocation: Bromley - Hybrid workingSalary: 85,000 - 100,000 + Benefits + BonusStart date: ASAPWorking hours: 40 hours per weekWe are working with one of the largest global BFSI organisations, operating at scale across international markets, who are looking … experienced Java and Fidessa Developer to support and enhance their front office trading platforms. In this role, the Java and Fidessa Developer will be working in a fast-paced front office environment, supporting equities trading systems and contributing to the stability and performance of business-critical ...

Senior Backend Developer (Java/AWS) Rate: £500-£600 per day (Outside IR35) Location: London (3 days per month onsite) Duration: Initial 6-month contract Overview We're supporting a financial services client looking for a Senior Backend Developer to help deliver and optimise a suite … engineering role with significant involvement in solution design, technical direction, and code quality. What You'll Be Doing Developing scalable backend services using Java and Spring Boot Designing and building RESTful APIs and event-driven solutions Deploying and maintaining applications within AWS environments Contributing to architecture, engineering standards ...

Front End Developer with Java – Central London Our Client is looking to recruit a Front End Java developer with at least 3 to 5 years solid development experience. Must have the following skills: HTML, XHTML, HTML5 CSS2, CSS3 JavaScript AJAX JSON, JSONP XML, XSLT, XSD jQuery ...

Senior Java Analyst Developer/Technical Consultant700 p/d outside IR35Quant Capital is urgently looking for a Java Analyst Developer/Technical Consultant to join our high profile client. Our client is a global trading platform software business. Its products are used globally by most … functionality, and undertaking development to deliver functionalities (when required).Technical Consultants/Analyst Developers must have:8+ years' full-stack experience as Senior Developer around digital applications, software engineering, microservices and cloud. This could include Core Java, Spring Boot, Hibernate/JPA and UI using React, Ember, JavaScript ...

Java Developer – Data140,000 Plus Large Prop BonusIn office – City of LondonQuant Capital is hiring for a small, high-performing market maker in London. This is a Mid-to-Senior role focused primarily on Java development, with a secondary responsibility owning straightforward Python ETL/data ingestion … PostgreSQL. This is a growing team focused on data ingestion and building tooling for the wider firm. What you'll do: Build and enhance Java backend services (APIs, batch jobs, integrations) used across the businessWrite clean, testable code with solid engineering discipline (testing, code review, debugging, production support)Maintain ...

Backend Java Developer – City London We are urgently looking to recruit a Java backend Developers with at least 5 years experience. Must have strong Data structures and Algorithms experience. Also experience of Spring, working with large code base, SQL, Unix etc. You should ideally have a solid ...

Java Developer with SQL Server – Central London Our Client is looking to recruit a seasoned professional with 5 plus years experience in developing with Java as a backend Developer with SQL Server. You will have a good understanding of Data Structures and Algorithms. In addition … Java and SQL Server development skills you should working knowledge of Spring, working with large code base, SQL, Unix etc. In addition you will have solid problem solving and algorithm skills. Excellent communication skills both spoken and written. This is a 6 months assignment based in Central London. ...

Title: Senior Java Developer with SolaceJob Location: London, UK (Hybrid)Job Type: PermanentMandatory skills: Java, Spring boot and SolaceSkillsDesign, develop, and maintain high-quality Java with Solace/ION/Python applications using SpringBoot.Proficiency in Java core 8+ is a must.Proficiency in Junit.Implement Solace publication ...

Contract Senior Java Developer – Data Up to 700 per day Outside IR35 (6 month rolling)In office – City of LondonQuant Capital is hiring for a small, high-performing market maker in London. This is a junior-to-mid role focused primarily on Java development, with a secondary … PostgreSQL. This is a growing team focused on data ingestion and building tooling for the wider firm. What you'll do: Build and enhance Java backend services (APIs, batch jobs, integrations) used across the businessWrite clean, testable code with solid engineering discipline (testing, code review, debugging, production support)Maintain ...

Full Stack Java Developer – FintechUp to 90,000 + bonusQuant Capital is urgently looking for a FrontendJava Developer to join a well known trading firm. No experience of finance is needed, finance isn't what this firm does, tech is. Our client is an innovative tech driven … role: This role and would suit a candidate with 2-10 years of Development experience. The successful candidate will be a top tier Frontend developer (or aspiring, half of the team don't have a comp sic degree) with a passion for solving engineering problems and delivering business functionality. ...

## Lead Java DeveloperApplyremote type: Hybridlocations: London United Kingdomtime type: Full timeposted on: Posted 30+ Days Agojob requisition id: 26949717**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 … work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech.The Lead Java Developer is a senior level position responsible for establishing and implementing new or revised application systems and programs in coordination with the Technology ...

collaborative and forward-thinking team focused on building high-performance applications. We're now seeking a passionate and driven Junior-Mid Java Developer to join our team and help deliver top-tier software solutions. What you'll do: Design, develop, and implement Java-based applications with … high standard of quality and best practices. Create and maintain technical documentation for applications and processes. Stay up-to-date with the latest Java technologies, frameworks, and best practices. QualificationsBachelor's degree in Computer Science, Software Engineering, or a related field (or equivalent practical experience).Solid proficiency in Java ...

Java Python Developer – Equity derivs Hedge Fund200,000Quant Capital is urgently looking for a Java Python Developer to join our high profile client in their main development team. Our client is one of the largest Quant Investment managers globally, with around 20 billion under management. They … Portfolio Managers. It is made up of Developers & Quants, covering our PM's globally. Due to recent growth, we are looking for an additional developer to help with the greenfield development and enhancement. This is an environment of science and intellectuals. The firm is known globally for its attitudes ...