376 to 400 of 530 Java Jobs in London

Integration design patterns Cloud integration architectures Security and governance frameworks Experience with: SOAP REST OData SFTP IDoc JMS Strong knowledge of: Message Mapping XSLT Java Mapping Proven experience leading large-scale integration transformation programmes. Excellent communication, stakeholder management, and leadership skills. If you are interested or would like to know ...

Core Java Developer - Low Latency Trading Technology Location: United Kingdom (Remote) We're working with a high-performance financial technology business whose software sits directly in the execution path of real-time electronic trading. This is not a Spring Boot microservices environment. This is an opportunity for an engineer … particularly interested in engineers who have built systems from the ground up and who understand what happens underneath the frameworks. Key Requirements: * Strong Core Java* Multi-threading, concurrency and locking* Memory management and garbage collection optimisation* Low-latency system design* FIX Protocol* Trading technology experience* Smart Order Routing, market connectivity ...

Senior Backend Engineer (.NET/Java Microservices) Contract: Inside IR35 Duration: 6 Months+ Hybrid - 2 days per week on site in London We're seeking a Senior Backend Engineer to design, build and enhance scalable backend services and APIs within a complex enterprise environment. You'll play a key role … delivering modern microservices while contributing to technical design and engineering best practice. Key Responsibilities Design and develop backend services using C#/.NET and Java (Spring Boot) . Build and support REST APIs and microservices. Contribute to architecture, technical design and system integration. Troubleshoot, optimise and support production systems. Collaborate ...

software development experience of designing and coding on enterprise web-based systems. Experience on Objected Oriented Design, Data modelling skills using UML. Experience with Java 8+; J2EE and Gradle/Maven. Experience with Spring (Boot, Security) and other Java frameworks. Experience with BPM tools such as Camunda (preferred), jBPM, Activiti ...

solution architecture for enterprise workflow and automation initiative s.8–12 years of experience in architecture & developmen t.Strong in Camunda BPM, microservices, workflow orchestration, and Java framework s.Solid understanding of cloud (Azure/AWS/GCP), CI/CD, containerizatio n.Ability to design scalable, secure, high‐performance automation solution s. Oversee … integrating microservices, APIs, event-driven systems, and legacy syste ms.Strong expertise in Camunda Platform 8/7, BPMN 2.0, D MN.Hands‐on experience with Java/Spring Boot, REST APIs, Kafka, cloud-native microservic es.Strategically support cloud migration and modernization programs involving Camun da.Conduct POCs, evaluate tools, and propose scalable ...

tick data. Consolidating legacy systems onto a next-generation cloud-native technology stack. Working closely with quantitative developers, researchers and portfolio managers. Supporting Java-based live data feed handlers. Requirements 5+ years working as a Software Engineer and/or Data Engineer. Strong expertise in Python, SQL and a good … Confident working with Linux and Docker. AWS experience preferred. An excellent communicator, ability to communicate clearly with technical and non-technical colleagues. Skills in Java and/or Kafka, Flink and Iceberg preferred. Cloud Data Warehousing experience preferred, especially using Snowflake. Financial experience – especially in relation to Buy Side, Electronic ...

Engineers with experience in one or more of the following technologies. We welcome applicants who bring depth in a particular language or specialism (e.g., Java-focused, C++-focused, Python-focused), as well as those with broader full-stack expertise. Programming Languages: •Java •Python •RUST Frontend Frameworks: •Vue.js (or similar modern ...

support partner integrations alongside Product managers and embark on new and thrilling projects that expand our network of global partnerships. With expertise in Java, Spring Boot, Kafka, and PostgreSQL you'll design and implement highly available, resilient services to support our partner ecosystem's rapid growth. Collaborate with talented Engineering … support seamless payments, and manage foreign exchange (FX) risk at scale. What will you be doing? Design, develop, and maintain highly scalable services in Java and Spring Boot within a microservices architecture. Apply domain-driven design to build robust, scalable solutions. Lead development efforts in event-driven architectures using Kafka ...

Active Security Clearance (SC), and with proven team lead experience to join a business-critical programme. Key Requirements: Proven experience working as a Lead Java Developer within the public sector Demonstrable team lead/leadership experience - ability to guide developers, support technical decision making, and ensure delivery standards Active Security … Clearance (SC) Expertise in a range of technologies, including Java 8 and 17+, Spring/Spring Boot, React/HTML AWS Cloud Services experience Working experience with MySQL Nice to have: Technical hands-on experience with Terraform, Kibana, Apache Camel Linux in a containerised environment Immediate availability ...

Skills Experience: Solution Architecture with a clear focus on E-commerce platforms or API/Middleware ecosystems. Technical Stack: Expert-level knowledge of Node.js, Java (Spring Boot), and PostgreSQL - able to read and critique vendor code, not just high-level diagrams. Integration Expert: Deep proficiency in API management patterns, Webhook ...

channels. Integrate quantitative models and new market data feeds into the pricing platform. Produce detailed technical designs aligned to solution architecture. Implement high‐quality Java server‐side components, applying industry‐standard development patterns. Build simulation and back‐testing environments; investigate regression issues where required. Conduct automated unit, integration, and performance … cyber vulnerabilities, contributing to strong risk and control governance. Participate in intraday or overnight support rota when required. Required Technical Skills Strong server‐side Java development experience, including multithreading. Experience building global, distributed systems in a real‐time trading environment (24x5.5). Proven experience developing Rates or FX pricing systems ...

want to hear from you! You get things done You have experience working with large scale distributed systems You have years of Java 8+ knowledge You have experience working with relational and non-relational databases, query optimisation and designing schemas You have a strong product mindset and passion for customer ...

Senior Java Backend Developer East London & Essex Border, UK | £590 per day (Inside IR35 via Umbrella) | 4 Days per Week On Site We are partnering with the original line-assembly automotive manufacturer and are seeking an experienced Senior Java Backend Developer to join a small, Agile team. You'll play … colleagues, and contributing to a positive team environment. Essential Skills & Experience Excellent communication skills with a collaborative approach to delivering high-quality products. Strong Java backend development experience. Recent hands-on experience with OAuth 2.0 , including customising identity workflows. Ability to lead technical discussions, mentor team members, and explain complex ...

platform for the LGBTQ+ business community. Please do not contact the recruiter directly. Accepting applications until: 31 July 2026 Job Description Your Role: Junior Java Developer - DAX Exchange Are you an early-career engineer who wants to build high-performance systems that power digital advertising at scale? As a Junior … Java Developer - DAX Exchange at Global, you'll join a small, focused team building performance-critical services in modern Java. You'll work on the matching engine that connects advertisers with outdoor screens and, over time, live radio and on-demand audio. You'll contribute to production code from ...

Backend Java Developer - Circa £540 per day inside ir35 - Remote with occasional travel to Croydon - 3-6 months Please note: Due to the nature of the project, successful applicants will be required to be SC cleared prior to appointment. My client is a global leading consultancy. They … hunt for a Java Developer to join a central government client of theirs click apply for full job details ...

/Senior Backend Engineer (Java) | Remote About Revolut People deserve more from their money. More visibility, more control, and more freedom. Since 2015, Revolut has been on a mission to deliver just that. Our powerhouse of products — including spending, saving, investing, exchanging, travelling, and more — help our 75+ million customers … keeps frameworks lean and focuses on what matters: clean, maintainable code, shipped fast with TDD, DDD, and continuous integration and delivery. Our stack includes Java 17/21, GCP, Kubernetes, Grafana, Prometheus, NewRelic, PostgreSQL, Redis, Spock, jOOQ, and Flyway. Up to shape what's next in finance ...

currently partnering with a global technology leader seeking a Full Stack Java Developer. You will be at the forefront of cutting-edge technology including AI, shaping the way millions of users experience seamless digital solutions. This is an opportunity to modernise and enhance industry-leading solutions, ensuring they remain reliable … scalable. As a Senior Java Developer, you will provide technical guidance and mentor a team of developers, fostering technical excellence and delivering high-quality software solutions. Working in an agile environment, you’ll collaborate with cross-functional teams to define, design, and implement innovative features while mentoring junior engineers . ...

Senior Software Engineer (Rust, C++, Java, Go or Python) Software Engineering Up to £150k base + meaningful equity London Senior Software Engineer – Rust, C++, Java or Python – London – Up To £150k base + meaningful equity Are you excited by solving technically challenging problems and building mission‐critical software … engineering excellence, working closely with colleagues across AI/ML, networking, and robotics. What we’re looking for: Strong programming skills in C++, Java, Rust, or Python. A strong computer science, engineering, or technical background (degree or equivalent experience). Enthusiasm for working across a diverse tech stack and solving ...

Solution Architect (Java, Spring Boot, Microservices) Location: Wembley, On-site Salary: Up to £85,000 + benefits 1 stage interview (ASAP) We're looking for an experienced Solution Architect to join a high-performing technology team delivering complex, enterprise-scale platforms. This role is ideal for someone who thrives … Experience: 5+ years in Solution Architecture Strong background in e-commerce platforms or API/middleware environments Technical Expertise: Strong knowledge of Node.js, Java (Spring Boot), and PostgreSQL Ability to review and critique code as well as architectural designs Integration & Architecture: Strong experience with API-led architecture, webhooks, and event ...

Senior Backend Java Developer 📍 London (Hybrid – 3 Days Per Week Onsite) A financial technology company is seeking a Senior Backend Java Developer to join the team building a globally distributed electronic trading platform. The platform processes multiple billions of messages per day and supports mission-critical trading workflows for institutional … engineers, product teams and other stakeholders to deliver reliable, highly available software in a fast-moving environment. What They're Looking For Strong commercial Java development experience Experience building large, complex backend systems Strong understanding of data structures and algorithms Experience with multithreaded programming A passion for clean, maintainable code ...

Overview Senior Software Engineer (Rust, C++, Java, Go or Python) Software Engineering Up to £150k base + meaningful equity London Senior Software Engineer - Rust, C++, Java or Python - London - Up To £150k base + meaningful equity Are you excited by solving technically challenging problems and building mission critical software … engineering excellence, working closely with colleagues across AI/ML, networking, and robotics. What we're looking for Strong programming skills in C++, Java, Rust, or Python. A strong computer science, engineering, or technical background (degree or equivalent experience). Enthusiasm for working across a diverse tech stack and solving ...

Software Engineer – Java/Python London (On-site) This is a hands-on software engineering role within a systematic hedge fund where technology sits at the core of the business. The systems you build directly support trading, research, and core operations, and your work will have real, measurable impact. … join a well-established engineering team and work across a range of internal systems, primarily in Java, with exposure to Python and quantitative tooling. The role offers end-to-end ownership: taking requirements from idea through to production, working closely with engineers and business stakeholders to solve practical problems. ...

Senior Software Engineer with Python and Java Our Client is looking to recruit brilliant Software Engineer with upwards of 5 to 10 years solid proven track record of developing complex applications with Python coupled with Machine Learning and ideally Go. We’re looking to recruit initially 2 excellent Software Engineers … very interested to see your profile. Must be 100% trustworthy with real integrity – this is a highly sensitive project. Key skills: Python, Machine Learning, Java The Client would like to see solid expertise of working with and developing complex applications with Java. Excellence is vital. Ideally have security clearance. ...

client is in the Insurance sector and is looking to grow their team with a Java Solution Architect. This is a hybrid role with 1-2 days a week in London. Client Details Our client is in the Insurance sector and is looking to grow their team with a Java … Solution Architect. This is a hybrid role with 1-2 days a week in London. Description Design and develop scalable and efficient Java-based solutions to address complex business challenges. Collaborate with cross-functional teams to understand technical requirements and translate them into practical solutions. Provide architectural guidance and ensure ...

process requirements into BPMN/DMN models .Design workflow components, service tasks, user tasks, and integration points .Develop and deploy Camunda-based microservices using Java/Spring Boot .Optimize workflow performance, reliability, and error-handling strategies .Coordinate with business analysts, developers, and QA teams .Ensure documentation, code reviews, and compliance … with standards .Hands‐on in Camunda BPM, BPMN/DMN modelling .Strong Java/Spring Boot development experience .Familiar with REST/SOAP integrations, messaging (Kafka/RabbitMQ) .Exposure to Docker, Kubernetes is a plus . ...