51 to 75 of 91 Part-Time Java Developer Jobs

An established financial services company seeking a Junior level Java Developer to join their onsite team in Glasgow . This role offers the chance to work on critical backend systems supporting key financial products and services. What You’ll Do Develop and maintain backend services using Java … tools like Git to manage your code. Bonus: Experience with cloud messaging APIs and push notifications. What We’re Looking For Strong skills in Java 11+, JDK 17 (certified preferred), Spring Framework, and REST APIs. Experience with Oracle & PL/SQL backend development. Understanding of Core Java EE More ❯

sector project focused on building secure, high-performance digital services using enterprise-grade microservice architecture. We are currently looking for an Actively SC-cleared Java Developer to join a high-impact team working on a mission-critical government platform. This is a fantastic opportunity to contribute to meaningful … work in a collaborative, agile environment. Tech Stack & Responsibilities: Backend Development: Java (Spring Boot), PostgreSQL, Docker Testing: Test-Driven Development (TDD) using JUnit, Mockito CI/CD: Experience with Jenkins or similar pipelines Collaboration: Agile working with cross-functional teams Desirable Skills: Frontend experience with React & TypeScript Messaging: Kafka More ❯

Are you a Java Developer with a couple of years experience, looking to level up your career in a meaningful way? Join a dynamic team building innovative software tools that support critical business operations. This hands-on role involves writing clean, well-tested code, collaborating with experienced developers … and contributing to real-world projects from day one. What You’ll Do Develop and maintain Java-based applications Write clean, maintainable code using Test-Driven Development and modern best practices Troubleshoot and solve technical challenges alongside your team Learn and apply new concepts in a practical environment What … We’re Looking For 2+ years of professional Java development experience Strong knowledge of object-oriented programming and version control (Git) Experience with automated testing frameworks (JUnit, TDD) Good documentation and communication skills Enthusiasm for learning and professional growth Bachelor’s degree in Computer Science or related field If More ❯

CyTAL is a leading cyber security company and is growing the development team for our cutting-edge suite of cyber-security tools. As a Java Developer in our multidisciplinary development team, you will be hands on with Java coding and driving forward the development of our cyber … and innovation within the development team - Work closely with other team members to troubleshoot and resolve technical challenges Essential Experience: - Demonstrable proficiency in developing Java and related technologies - Testing: Test Driven Development, J-Unit, User testing - Use of GIT VCS - Object-oriented design - Creation of detailed design documentation Desirable More ❯

CyTAL is a leading cyber security company and is growing the development team for our cutting-edge suite of cyber-security tools. As a Java Developer in our multidisciplinary development team, you will be hands on with Java coding and driving forward the development of our cyber … and innovation within the development team - Work closely with other team members to troubleshoot and resolve technical challenges Essential Experience: - Demonstrable proficiency in developing Java and related technologies - Testing: Test Driven Development, J-Unit, User testing - Use of GIT VCS - Object-oriented design - Creation of detailed design documentation Desirable More ❯

Are you a Java Developer with a couple of years experience, looking to level up your career in a meaningful way? Join a dynamic team building innovative software tools that support critical business operations. This hands-on role involves writing clean, well-tested code, collaborating with experienced developers … and contributing to real-world projects from day one. What You’ll Do Develop and maintain Java-based applications Write clean, maintainable code using Test-Driven Development and modern best practices Troubleshoot and solve technical challenges alongside your team Learn and apply new concepts in a practical environment What … We’re Looking For 2+ years of professional Java development experience Strong knowledge of object-oriented programming and version control (Git) Experience with automated testing frameworks (JUnit, TDD) Good documentation and communication skills Enthusiasm for learning and professional growth Bachelor’s degree in Computer Science or related field If More ❯

Senior Java Developer – Market Connectivity – Equities (Contract) Location: London (Hybrid) A leading investment bank is seeking a senior Java engineer to join its Equities Connectivity team on a contract basis. This is a key role supporting a critical platform that connects to external trading venues and market … high-performance messaging Contribute to ongoing platform upgrades and modernisation Help shape the long-term strategy of the connectivity stack Key Requirements: Strong Core Java, multithreading, and concurrency experience Knowledge of market connectivity protocols (e.g. FIX) Experience in any asset class, equities preferred, but others considered Ability to work More ❯

Senior Java Developer – Market Connectivity – Equities (Contract) Location: London (Hybrid) A leading investment bank is seeking a senior Java engineer to join its Equities Connectivity team on a contract basis. This is a key role supporting a critical platform that connects to external trading venues and market … high-performance messaging Contribute to ongoing platform upgrades and modernisation Help shape the long-term strategy of the connectivity stack Key Requirements: Strong Core Java, multithreading, and concurrency experience Knowledge of market connectivity protocols (e.g. FIX) Experience in any asset class, equities preferred, but others considered Ability to work More ❯

Senior Java Analyst Developer/Technical Consultant £120,000 Plus Bens Quant 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 More ❯

a permanent basis working with their Central Government clients. In order to be successful, you will have the following experience Highly experienced back end developer, with experience in working on Government or Defence applications (DV Cleared) Experienced developer within Java, TypeScript, JavaScript and/or Python Build More ❯

a permanent basis working with their Central Government clients. In order to be successful, you will have the following experience Highly experienced back end developer, with experience in working on Government or Defence applications (DV Cleared) Experienced developer within Java, TypeScript, JavaScript and/or Python Build More ❯

Paragon Alpha are partnered with a well-established Financial Services Firm who are hiring a Senior Java Developer to lead the buildout of a greenfield execution platform for their Equities desk in London. You will be central to the planning and development of this new build. Using your … experience in Equities trading, being able to efficiently and effectively go face to face with professionals on the trading floor. Deploying your proficiency in Java for full-stack trading system development. Tech Stack: Java, Kubernetes, SQL This is an opportunity to take on a leading role on my More ❯

Quant Developer – Front Office | Top Investment Bank | London We’re hiring a Quantitative Developer to join a leading investment bank’s front-office trading team in London. What You’ll Do: Build scalable frameworks for smart order routing & execution strategies Design & implement equities trading algorithms Collaborate with traders … quants, and engineers Work in a low-latency, high-performance environment What We’re Looking For: 5+ years in front-office trading tech Strong Java (low-latency systems); kdb+/q or C++ a plus Experience with electronic cash equities/algo trading Degree in CS, Financial Engineering, or More ❯

Job Description: Role Highlights: Location: Hybrid - Reading, Croydon Type: full-time Job Title: Java Full stack Software Engineer Job Description: Opportunity for talented Full Stack Software Engineer to join collaborative engineering team. This role will focus on design, architecture, and implementation of software components as well as the overall … and principles, utilizing concepts of clean architecture and clean code. Primary Responsibilities: Develop and maintain server-side and client-side applications using React, TypeScript, Java, Spring Boot, ensuring code quality, efficiency, and adherence to best practices. Design and implement scalable and efficient data structures and algorithms to optimize application … and upgrade existing systems. Participate in code reviews to maintain code quality and share knowledge. Stay updated with industry trends and technologies related to Java, React, Spring Boot, CI/CD, Kubernetes, cloud technologies, and microservices Required Qualifications: Proficiency in React and its core principles, including hooks, state management More ❯

Description: · 4+ years of Java Development experience- Java 11+ · Spring · Experience working with microservices architecture · Kafka for messaging - to some extent or equivalent · MongoDB - to some extent or equivalent · Strong understanding of SDLC Nice to haves: · Gitlab - experience with others is generally fine, they can learn Gitlab · Test More ❯

Title: Java API Developer Location: Northampton, UK Type: Hybrid Salary: £290 per day (inside IR35) Contract: Until Dec 2025 Key Responsibilities Collaborate with developers and stakeholders to deliver robust, scalable APIs. Translate technical designs into clean, efficient, and maintainable code. Perform peer code reviews and support junior developers … retrospectives to support Agile delivery. What We’re Looking For Bachelor’s degree in Engineering (BE) or MCA from a recognized institution. Strong core Java development skills. Solid hands-on experience with: Spring, Hibernate, and Spring Boot Java Web Services, including SOAP and RESTful APIs Familiarity with development More ❯

We’re seeking a seasoned Java Backend Developer to join a core engineering team working on consolidation of microservices , legacy system upgrades , and application modernization . This role demands strong backend fundamentals, an eye for clean architecture, and the ability to collaborate with teams across geographies. Must-Have … Experience 3-6 years professional experience in Java development Proficient with Java 11+ Deep expertise in Spring/Spring Boot Strong understanding of microservices architecture Familiarity with messaging platforms like Kafka , RabbitMQ , or equivalent Hands-on with NoSQL databases such as MongoDB Solid grasp of the SDLC and … global teams Comfortable with legacy systems : refactoring, maintaining, and upgrading Project Involvement Includes Consolidating multiple legacy microservices into domain-aligned unified services Migrating legacy Java applications to modern Spring Boot infrastructure Diagnosing production issues using logs, stack traces, and performance metrics Participating in application upgrades , dependency migration, and technical More ❯

of home and office, subject to operational requirements. As part of the Global Equities Front Office technology team, an opportunity exists for an experienced developer to work on a real-time trade processing and client allocation platform. The platform is primarily built in Java and incorporates low-latency … memory database technologies. The role involves a mix of technical support tasks, including diagnosing production issues, applying bug fixes, and extending the platform using Java and a proprietary workflow/reporting framework. There are also opportunities to collaborate globally to enhance the core framework and develop new features. Candidates … complex equities trading workflows and familiarity with Fidessa ETP and/or CTAC is desirable. Key Responsibilities & Tasks: Develop new workflows using a proprietary Java-based framework Develop new reports using the same framework Collaborate with the global development team to enhance the platform Implement permanent fixes for development More ❯

of home and office, subject to operational requirements. As part of the Global Equities Front Office technology team, an opportunity exists for an experienced developer to work on a real-time trade processing and client allocation platform. The platform is primarily built in Java and incorporates low-latency … memory database technologies. The role involves a mix of technical support tasks, including diagnosing production issues, applying bug fixes, and extending the platform using Java and a proprietary workflow/reporting framework. There are also opportunities to collaborate globally to enhance the core framework and develop new features. Candidates … complex equities trading workflows and familiarity with Fidessa ETP and/or CTAC is desirable. Key Responsibilities & Tasks: Develop new workflows using a proprietary Java-based framework Develop new reports using the same framework Collaborate with the global development team to enhance the platform Implement permanent fixes for development More ❯

please get in touch with at UKI.recruitment@tcs.com or call TCS London Office number 02031552100 with the subject line: “Application Support Request”. Role: Java Full Stack Developer Job Type: Permanent Location: Glasgow, UK (Onsite) Number of hours: Standard Join us as a Java Full Stack Developer. … you, it means more to make an impact that matters, through challenging projects which demand ambitious innovation and thought leadership. The Role As a Java Full Stack Developer, you will play a crucial role in an agile team, focusing on the enhancement, construction, and delivery of top-tier … Practical experience in System Design, Application Development, Testing and operation Stability. Experience in developing, debugging and maintaining with the technologies and frameworks such as Java, J2EE, Microservices. Spring Boot, Spring Cloud, Angular, JavaScript and Rest API. Exposure Database Server such as Oracle and NoSql Database such as Cassandra. Knowledge More ❯

Regulatory Reporting Engineer - Java Salary: Up to £130,000 + Bonus + Benefits Role Type: Permanent Position Office Location: Central London Hybrid Model: 3 days per week in office, 2 days remote About the Role: We’re looking for a Lead Reporting Engineer with a strong Java development … up a small, agile team focused on end-to-end reporting solutions—spanning regulatory and strategic platforms. This role combines hands-on development with Java , Spring Boot , SQL , and data frameworks, alongside leadership in project delivery and resource planning. You’ll serve as a subject matter expert (SME) across … and security teams to deliver robust, enterprise-grade solutions. Key Responsibilities Lead the design and development of reporting applications with a strong focus on Java (C#/.NET experience also valuable). Act as the technical lead for multiple Agile Scrum pods (approx. 5 people per team), providing functional More ❯

testing, and deployment (CI-CD) of the final product. Participate in code reviews and provide constructive feedback to team members. - Mandatory skills (must-have): - Java Full Stack Developer – Excellent communication skills with customer/stakeholder management experience. - Expert in developing and maintaining web applications using the SpringBoot framework. More ❯

Regulatory Reporting Engineer - Java Salary: Up to £130,000 + Bonus + Benefits Role Type: Permanent Position Office Location: Central London Hybrid Model: 3 days per week in office, 2 days remote About the Role: We’re looking for a Lead Reporting Engineer with a strong Java development … up a small, agile team focused on end-to-end reporting solutions—spanning regulatory and strategic platforms. This role combines hands-on development with Java , Spring Boot , SQL , and data frameworks, alongside leadership in project delivery and resource planning. You’ll serve as a subject matter expert (SME) across … and security teams to deliver robust, enterprise-grade solutions. Key Responsibilities Lead the design and development of reporting applications with a strong focus on Java (C#/.NET experience also valuable). Act as the technical lead for multiple Agile Scrum pods (approx. 5 people per team), providing functional More ❯

Role Title: Java FullStack Developer Duration: contract to run until 31/12/2025 Location: London, hybrid working Rate: up to £276 p/d Umbrella inside IR35 Role purpose/summary You will ensure that all activities and duties are carried out in full compliance with … seek opportunities to address these needs through guidance, coaching and formal training. Key Skills/requirements What we’re looking for: Good hands on Java/J2EE and Springboot experience Experience working with RESTful Some experience with JavaScript Exposure to Cloud Tools Good understanding of Object Oriented Concepts and More ❯

Our client, a world-leading trading firm is currently seeking a Senior Full-Stack Developer specialising in java with some Python and React, to join their Commodities Trading Desk in London. This is a fantastic opportunity to work in a low-frequency trading team focused on building high … applications that help traders make informed decisions using vast and diverse data sources. What You'll Do: Develop and maintain robust backend systems using Java (70% of your time). Contribute to the frontend using TypeScript and modern frameworks (30%). Occasionally work with Python for scripting and data … team members across London, Chicago, and Texas. Work closely with traders to understand their workflows and deliver impactful solutions. Required Qualifications: Strong experience in Java development . Willingness and ability to contribute to frontend development. Experience or interest in working with TypeScript and modern UI frameworks. A pragmatic, hands More ❯