151 to 175 of 328 Java Jobs in London

bring: Strong experience with Domain-Driven Design (DDD) and modern system decomposition Proven delivery of microservice-based architectures Deep hands-on experience with Java/Spring and React Experience improving engineering effectiveness through testing strategy and automation Exposure to cloud-native environments (AWS preferred) Confidence mentoring engineers and leading technical … discussions Comfort working with stakeholders in regulated environments Eligibility for UK Security Clearance (British citizenship required) Core technologies: Java/Spring React/JavaScript SQL/NoSQL databases Docker/Kubernetes AWS Playwright GitLab, Maven Nice to have: GovUK UI Framework Azure or GCP .NET Benefits Flexible working with core ...

Senior Java Engineer – Reactive (Spring WebFlux) London – Hybrid (1 day per week onsite) Are you a senior, 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 ...

Java Software Engineer Active SC Clearance Contract Length: Initial 3-month contract £400-£480pd (Inside IR35) Working Pattern: Flexible fortnightly on-site visit to a convenient Available Locations: Glasgow, Newcastle, Leeds, Sheffield, Manchester, Birmingham, Blackpool, Cardiff, London Role Overview We are seeking an experienced Java Software Engineer to join … quality software in a collaborative, fast-paced environment, contributing to systems used by both internal and external users. Key Responsibilities Design, develop, and maintain Java-based microservices using modern development practices Implement and maintain APIs for internal and external consumption Work in a TDD/BDD environment, building robust automated ...

Trading London Atrium EMEA is looking for several Senior Full-Stack Engineer with good experience of FX e-Trading (React/TypeScript + Java) to help architect and build a new FX e-trading platform from the ground up, working across the stack to deliver high-performance, resilient, and secure ...

more. Skills & Experience required Skills: 2-5 years development experience, systems administration experience for J2EE applications, JBoss, Jenkins, Ansible, Git, Agile Scrum Experience. Technologies: Java, Spring Framework, Web Services, JMS, MDB, Junit, JIRA ...

leadership, architecture, and hands-on coding capability, with close engagement in client-facing and pre-sales activity. What good looks like: Strong engineering foundation (Java, .NET, or similar modern stack) Comfortable being hands-on in code when needed (e.g. CI/CD, Terraform, Kubernetes) Proven experience leading teams and mentoring ...

strong Business Knowledge. Strong and clear Communication Skills. Experienced working within Banking/Ecommerce. Knowledge and Experience of: Test Case Management Jira/Zephyr Java/Appium IND_PC3 Guidant, Carbon60, Lorien & SRG - The Impellam Group Portfolio are acting as an Employment Business in relation to this vacancy. ...

Java Developer Join a high-impact Core Technology team at a leading hedge fund. About the Company This firm is a major player in the space, a multi-strategy hedge fund with a strong focus on systematic and quantitative trading. Founded by industry veterans, it combines deep financial expertise with … advanced software engineering to manage institutional capital globally. What You’ll Do Design and build high impact internal systems using Java Own projects end-to-end: from architecture to deployment Collaborate with analysts to solve real-world business problems Support and mentor junior team members on coding and data skills ...

well as very competitive salaries, our client offers an excellent working environment. Skills required: Proficient in several of the following: Python, C#, C++, Java Mathematical Modelling Mathematical skills, particularly a keen understanding of probabilities and statistics Analytic mindset Strong communication skills Accuracy and attention to detail Experience in data science ...

services (or vice versa). You will architect 'Tier 0' services that filter and protect content across Who You Are * Expertise: Deep knowledge of Java and Python . The Stack: Experience with Ray , Apache Beam/Scio , dbt , and BigQuery . Mindset: Comfortable leading in ambiguous problem spaces and delivering ...

PostgreSQL, MYSQL, or similar RDBMS Display & Visualization SLD creation, HMI development, real-time dashboards, operator displays, and reports Programming/Scripting C, C++, PERL, Java or equivalent for application interfacing and scripting Data Handling Real-time data acquisition, Historian integration, data replication, and logging Performance Tuning & Monitoring Query optimization, indexing ...

where the code you ship shows up in production fast and at scale. 💡 They’re looking for engineers who: Have strong OOP fundamentals ( Python, Java, Go, or Rust ) (core stack is C# , and they’ll support you getting up to speed) Enjoy breaking down complex systems and rebuilding them into ...

engineering leadership within trading, commodities, energy or capital markets. Proven experience running front-office application teams supporting live trading desks. Strong technical background in Java, React, APIs, real-time data and AWS. Experience delivering high-performance, low-latency trading platforms. Confident working directly with traders, quants and senior commercial stakeholders. ...

statutory requirements Essential Skills & Experience Experience developing client-server applications Strong computer science fundamentals (OOP, data structures, algorithms) Programming experience in C++, C#, or Java Control systems and graphical user interface development experience Familiarity with unit testing frameworks Experience with software configuration management and version control Industrial Ethernet communication protocols ...

collaborative. Confident testing across iOS, Android, Windows, and macOS. Experienced in release test planning and coordination. Hands-on technical understanding of code (Swift, Kotlin, Java, Objective-C). Skilled in diagnosing test failures and mentoring others. Advocates for Quality Engineering and Shift-Left practices. Desirable: Experience with A/ ...

testing principles. Familiarity with SQL or Excel for data validation is advantageous. Knowledge of testing tools (e.g., Selenium, JIRA) or programming languages (e.g., Python, Java) is a plus. What We Offer: Structured training and professional development opportunities. A collaborative and supportive team culture. Competitive salary with a comprehensive benefits package. ...

testing principles. Familiarity with SQL or Excel for data validation is advantageous. Knowledge of testing tools (e.g., Selenium, JIRA) or programming languages (e.g., Python, Java) is a plus. What We Offer: Structured training and professional development opportunities. A collaborative and supportive team culture. Competitive salary with a comprehensive benefits package. ...

testing principles. Familiarity with SQL or Excel for data validation is advantageous. Knowledge of testing tools (e.g., Selenium, JIRA) or programming languages (e.g., Python, Java) is a plus. What We Offer: Structured training and professional development opportunities. A collaborative and supportive team culture. Competitive salary with a comprehensive benefits package. ...

reach for at 2am—observability, customer management, compliance monitoring, maintenance APIs, and the safety guardrails that let teams ship fast without breaking things. Go, Java/Scala, TypeScript, Kubernetes, and more. Both are cross-organizational roles with high autonomy, real ownership, and plenty of ambiguity. If you thrive on complexity ...

RESTful APIs and Webservices Confident communicator with the ability to explain technology to non-technical audiences Background in Software Engineering using C#, C++, Java would be a hugebonus ...

trade lifecycle, market structure, and regulatory requirements (MiFID II, Reg NMS, CAT/TRF). Experience with message-driven architectures, SQL, and scripting in Java or Python. Excellent problem-solving skills and the ability to work closely with traders and engineers in fast-paced environments. Apply today or email your ...

architecture of the company from early days Required experience Experience with Python in production systems, plus at least one additional backend language (e.g. Rust, Java, Go) Experience building and running production backend systems Comfortable turning ambiguous research or ideas into real software Solid understanding of APIs, databases, and distributed systems ...

market hours when required About You Degree in Computer Science, Engineering, Mathematics or a related scientific discipline Practical programming knowledge (Python essential; C# or Java advantageous) Strong communication skills and confidence leading client discussions Highly motivated with a strong willingness to learn and develop Interest in financial markets and trading ...

record leading multi-geography, multi-vendor technical collaborations. Deep understanding of cloud SaaS architectures and insurance/health-tech domains. Hands-on technical credibility (Java, Kafka, AWS) combined with executive presence and negotiation skills. Demonstrable expertise in tools/technologies for the design, development, build, testing and deployment of various ...

record leading multi-geography, multi-vendor technical collaborations. Deep understanding of cloud SaaS architectures and insurance/health-tech domains. Hands-on technical credibility (Java, Kafka, AWS) combined with executive presence and negotiation skills. Demonstrable expertise in tools/technologies for the design, development, build, testing and deployment of various ...