151 to 175 of 351 Java Jobs in London

Principal Java Engineer London – Hybrid (1 day per week onsite) Are you a senior/lead hands-on Engineer who thrives in event-driven, asynchronous environments? Do you enjoy building low-latency, high-throughput distributed systems where correctness, resilience, and performance really matter? This is an opportunity to work … near-zero downtime. Design and implement high-throughput, low-latency systems processing millions of real-time payment events Build event-driven architectures using modern Java and reactive frameworks Work extensively with non-blocking I/O, asynchronous flows, back-pressure, and concurrency Contribute to system and API design, focusing ...

Senior Java Developer Senior Java Developers with a passion for cutting-edge technology and a desire to work on a flagship platform rebuild, look no further for your next role! We have an exceptional opportunity with a leading financial services technology vendor based in the heart of London. … Senior Java Developer within this team, you will play a crucial role in the next phase of their growth, working on autonomous software at the core of their processes. You will have the opportunity to bring the most cutting-edge technology to their global client pool, with a focus ...

cloud-native systems using modern engineering practices. The environment is data-driven, product-focused, and centred around delivering real value to customers. Tech environment Java/Kotlin (JVM ecosystem) Microservices architecture Cloud-native (AWS/GCP) Spring/Spring Boot Docker & Kubernetes Messaging & streaming technologies Distributed tracing and observability tooling … zero-downtime releases Collaborating in cross-functional squads and contributing to engineering best practices What we’re looking for Strong backend engineering experience (Java/Kotlin preferred) Experience working with distributed systems and cloud technologies A problem-solving mindset with a focus on quality and ownership Comfortable working in fast ...

Senior Java Engineer (Core Java) £115,000 - £145,000 Central London - Hybrid A high-growth, privately backed Enterprise SaaS company is seeking a Senior Core Java Engineer to join its London-based engineering team. The organisation builds large-scale, mission-critical platforms used by some of the most sophisticated technology … throughput distributed systems, solving complex engineering problems at scale within a collaborative, high-performing team. Key Responsibilities Design, build and maintain high-performance distributed Java services Contribute across design, development, testing, deployment and support Collaborate closely with other engineers to deliver customer-centric solutions Mentor and be mentored within ...

Backend Software Engineer/Developer (Java Kafka) London/WFH to £90k Are you a Java technologist seeking a role where you can work on ground breaking technology, continually learning and progressing your career? You could be joining a global technology consultancy. What … days a week in the London, City office (or at client sites), you'll join a friendly, diverse, upbeat team. About you : You have Java development skills including multi-threading and concurrency You have experience with SpringBoot and microservices environments You have a good knowledge of REST APIs You have ...

predictive analytics — helping the world's largest employers find the right people, faster and fairer. But we're not done. Not even close. Role: Java Developer Location: Remote Role Overview: We are hiring a Java Developer to build high-performance backend services that operate at Joveo's scale. You will … design and maintain core Java systems — from microservices to event-driven architecture — ensuring reliability and throughput for millions of daily transactions. Key Responsibilities: - Develop and maintain backend microservices and APIs in Java - Design scalable service architectures using Spring Boot or similar frameworks - Write performant, thread-safe, and well-tested code ...

predictive analytics — helping the world's largest employers find the right people, faster and fairer. But we're not done. Not even close. Role: Java Developer Location: Remote Role Overview: We are hiring a Java Developer to build high-performance backend services that operate at Joveo's scale. You will … design and maintain core Java systems — from microservices to event-driven architecture — ensuring reliability and throughput for millions of daily transactions. Key Responsibilities: - Develop and maintain backend microservices and APIs in Java - Design scalable service architectures using Spring Boot or similar frameworks - Write performant, thread-safe, and well-tested code ...

public sector organizations across the UK. Ideal candidates will have active SC or DV clearance and strong experience in modern programming languages like Java or Python. The role demands hands-on effort in shaping architectural standards and modern engineering practices. Competitive compensation package offered. #J-18808-Ljbffr ...

data infrastructure Develop quantitative research platforms and tools Optimize performance-critical financial applications Requirements: 2+ years software engineering experience Strong C++/Python/Java skills Trading experience preferred but not essential Our network: Pay: $150K-$800K+ based on experience Locations: London, Remote Focus: Trading platforms, risk systems, data infrastructure ...

Release preparation Show and tells and demonstrations Tech stack: Typescript on NodeJS AWS Cloudwatch, Lambda, SQS, S3, RDS and DDB Terraform PostgreSQL Scala/Java Jira, Slack, Teams and Figma (Collaboration tooling) Reasonable Adjustments: Respect and equality are core values to us. We are proud of the diverse and inclusive ...

latest Android trends, tools, and technologies Required Skills & Experience 5+ years of experience in Android development Strong proficiency in Kotlin (and solid knowledge of Java) Experience with modern Android architecture patterns ( MVVM, Clean Architecture ) Deep understanding of Android SDK, Jetpack components, and app lifecycle Experience with RESTful APIs and third ...

clean energy for the charging of electric vehicles. In this position, they are looking for experience in: 3+ years commercial experience JVM development - Java, Kotlin or Scala (Bonus) if you have already worked with Kotlin Microservices architecture Public cloud technologies e.g. AWS Have worked in modern, product-focused tech companies ...

stakeholders What We're Looking For Essential: Strong interest in data, particularly Data Science and Machine Learning Solid software engineering background with experience in Java, Python or TypeScript Hands-on experience with cloud platforms DV Clearance in place Location & Working Pattern: Candidates must be aligned to either London or Manchester ...

front-office, brokerage, exchange, ISV, software vendor or market data business. Experience within Equities or Fixed Income markets. Familiarity with modern tech stacks, including Java, Python or C++. Experience working within an electronic trading environment is essential. Excellent analytical, communication, and stakeholder management skills. 🌍 Why Join? You’ll be part ...

stakeholders What We're Looking For Essential: Strong interest in data, particularly Data Science and Machine Learning Solid software engineering background with experience in Java, Python or TypeScript Hands-on experience with cloud platforms DV Clearance in place Location & Working Pattern: Candidates must be aligned xehkeey to either London ...

Linux 8, Windows Server 2008/2016/2019, VMware ESX v6, Docker, IBM Initiate (Master Data Management) Nice to have: Working experience with Java 8, 5, 6, 11, Enterprise JavaBeans (EJB) and JSP Immediate availability If you're interested in this role, click 'apply now' to forward ...

skills and experience are required for this role: Technically minded. Comfortable both as architect and hands-on developer. Strong and experienced C++ developer. Capable Java developer with coding experience in the workplace. Strong hands-on experience with multi-threading, and real-time systems. Using SQL, preferably MS SQL Server. Experience ...

Science, Engineering, or another quantitative/technical discipline Required Skills Strong programming ability in at least one major language such as Python, C++, or Java Excellent attention to detail and a methodical approach to problem solving Strong communication skills and the ability to work effectively with teams across multiple global ...

experience: • Active SC clearance and experience operating within secure or regulated environments • Strong coding background with at least one of the following: Python, Java, C# or JavaScript, alongside general software engineering principles • Experience building data pipelines, including ingestion, transformation, and orchestration of large datasets • Familiarity with handling structured and unstructured ...

part of the low latency development team. The team provides industry leading low-latency trading services for our clients, utilizing FPGA, C++ and Java technologies. The candidate will be focusing on the C++ components. The ideal candidate: Is motivated by working in a high performing team, Is flexible to change ...

interfaces. Utilise Workday Studio, Workday Web Services (WWS), EIB, and Cloud Connect (CCW, PECI) for integration tasks. Apply coding skills such as XSLT, XML, Java, SQL, and other integration technologies to build scalable and efficient custom integrations. Ensure accurate and seamless data flow between Workday and other enterprise systems. Identify ...

Selenium WebDriver and UI automation frameworks Proven experience designing and executing load, stress, and scalability tests Proficiency in one or more automation languages (Python, Java) Knowledge of: Distributed workload execution Multi-threading and parallelisation concepts REST API testing and validation Familiarity with Microsoft PowerBI, Fabric workloads, or similar analytical tools ...

years’ practical experience on a web-based application Proficient with English (both verbal and written) Proficient with any back-end programming languages (i.e. C#, Java, Python, C++, etc.) Outstanding knowledge of software and application design and architecture Highly analytical mindset, with an ability to see both big picture ...

years’ practical experience on a web-based application Proficient with English (both verbal and written) Proficient with any back-end programming languages (i.e. C#, Java, Python, C++, etc.) Outstanding knowledge of software and application design and architecture Highly analytical mindset, with an ability to see both big picture ...

essential for this role) Python within quant or data environments The client will also consider exceptional engineers from other OOP backgrounds such as C++ , Java , or Go Familiarity with UI technologies such as WinForms, WPF, Blazor Hybrid, and Blazor Web Leadership & Approach Experience working in front‐office or trading‐technology ...