1 to 25 of 91 Java Jobs in the City of London

Please find the Job Description:- Role: Senior Java Developer Location: Farnborough/UK (Hybrid) Hybrid mode of work Exp range:8+ years Mandatory skills: Java Springboot, Java 17/11, AWS, Pipeline, Financial domain, Spark. JD: Java Tech Lead job involves leading and mentoring a Java development team, analyzing … conducting code reviews, troubleshooting complex technical issues, and driving innovation with new technologies. Key Responsibilities: • Team Leadership: Lead, mentor, and guide a team of Java developers in the development lifecycle. • Project Management: Oversee Java development projects from conception to completion, ensuring alignment with project requirements and timelines. • Technical Expertise: Design ...

greatest impact will come from technical leadership, enabling teams to deliver robust, scalable, and secure services. With a strong foundation in backend technologies, including Java and Spring Boot, and event-driven systems such as Kafka, you’ll influence systems well beyond your own code, ensuring architectural integrity and high engineering … strong engineering culture. Ensure backend systems comply with relevant standards such as ISO27001 and PCI. Key Skills & Attributes: Strong backend engineering experience, ideally including Java (Java 11+) and Spring Boot. Proven ability to design and lead backend architectures for complex systems. Familiarity with cloud environments (AWS preferred) and container orchestration ...

Looking For 7+ years of professional software engineering experience. Technical Depth: Strong proficiency in at least two of the following: Go, Python, TypeScript, or Java . Infrastructure: Hands-on experience with Docker, Kubernetes, and cloud platforms (AWS, GCP, or Azure). Mindset: A clear communicator who moves with urgency ...

code, testing, and CI/CD best practices Mentor junior engineers and support technical decision-making Required Skills & Experience Strong programming experience in Python, Java, or Go Experience building backend services, APIs, and distributed systems Strong knowledge of cloud platforms (AWS, GCP, or Azure) Experience with containerisation and orchestration (Docker ...

evolving an established platform while contributing to the longer-term modernisation of the architecture. Non-Negotiables: Strong software engineering experience (C# preferred but Java, or C++ considered) Strong SQL/relational database experience Careful approach to testing and safe refactoring Clear, concise technical and verbal communication Have previously worked ...

with business teams to define data flows and ensure security protocols (encryption/authentication) are met. Technical Toolkit Languages: Proficiency in Python, R, or Java/Scala. Databases: Experience across Relational (SQL), NoSQL (MongoDB/Cassandra), and Graph (Neo4j). Big Data: Hands-on experience with Hadoop or Spark. Infrastructure ...

Location: London, London, United Kingdom Rate: £550 per day Contract type: Contract We are seeking a Senior Java Developer to join a modern engineering team building high-performance, cloud-native services. You will take ownership of backend design and delivery, mentor engineers, and help elevate engineering standards. A key focus … understands the newest features, and can coach others to use it safely and effectively. Key Responsibilities Design, build, and optimise microservices and APIs using Java 21 . Drive best practice in code quality, testing, secure coding, and performance tuning. Build and integrate with NoSQL data stores and event-driven components ...

Java Software Development Engineer in Test - FinTech - Java Remote (UK) | £80 - 90k Our client a cutting-edge fintech business is looking for a Software Development Engineer in Test (Java SDET) to strengthen their automated testing framework and drive software quality to the highest standards. This is a great opportunity … with developers to enhance testing infrastructure for continuous delivery Proactively identify areas for improvement in software quality Essential Experience: Strong Object-Oriented Programming in Java Java must be your primary language you have a proven background with Proven background as an SDET Component testing, end-to-end testing & failure scenario ...

Bring... 6-10 years’ experience in software engineering, DevOps, security engineering or platform-focused roles within complex technical environments Strong engineering capability in Java or C# (Python also highly relevant) Proven experience working at scale in established, production-grade environments Deep familiarity with DevOps tooling including CI/CD pipelines ...

mixed London/Denmark engineering team in a highly business‐facing environment Tech Stack Languages: C#/.NET (strategic direction) Python (current tooling base) Java or other OO languages also considered Cloud: AWS (current environment) Frontend: Angular Svelte React experience also relevant Data/Messaging: Strong database fundamentals (Postgres, ClickHouse ...

databases and logs , and tracing issues end-to-end. Key requirements: Strong manual and/or automated testing of complex web apps Experience testing Java/Spring Boot backends REST API testing (Postman/Swagger etc.) Strong SQL skills React/Next.js frontend testing experience AWS familiarity ...

adopt modern cloud-native technologies and best practices Promote high engineering standards across code quality, testing, and automation Skills: Strong backend engineering capability (Golang, Java, or .NET) Strong hands-on experience building and operating distributed systems in cloud environments (AWS or GCP) Kubernetes and container orchestration experience Infrastructure as Code ...

ideal candidate will have the following skills and experience: • Strong commercial experience in automation testing, ideally across both UI and API. • Proficiency in Java or Kotlin, with the ability to design scalable automation frameworks. • Confident working with web technologies such as HTML, CSS and JavaScript. • Hands‐on experience with tools ...

adopt modern cloud-native technologies and best practices Promote high engineering standards across code quality, testing, and automation Skills: Strong backend engineering capability (Golang, Java, or .NET) Strong hands-on experience building and operating distributed systems in cloud environments (AWS or GCP) Kubernetes and container orchestration experience Infrastructure as Code ...

Required Skills & Experience Technical Expertise (Exceptional Level) 2025+ years in QE engineering, transformation, and automation leadership. Mastery of: o Playwright, Appium, Selenium, Cypress, Java o API Automation (REST Assured, Karate, Postman) o Performance (JMeter, LoadRunner) o Cloud native testing (Azure, AWS, GCP) o Test orchestration, CI/CD pipelines ...

Senior Java Developer - Electronic Trading, Fixed Income sought by leading investment bank in London. ** Inside IR35 - 4 days a week on site** An opportunity to join a high-performing global technology team within the trading domain. This role sits at the centre of a fast-moving environment, contributing … design and development What You Need to Succeed Must have: * A detail-oriented, collaborative approach with strong communication skills * Extensive hands-on server-side Java development experience * Strong knowledge of Java Concurrency, RX Streams, caching (GridGain), Collections, messaging, and event-driven processing * Experience with multicast messaging (Solace or RV) * Solid ...

fintech startup looking for a hands-on QA Tester with a strong payments background . You’ll work directly with the CTO, testing across Java/Spring Boot APIs, React frontends, SQL databases and AWS environments . Must be comfortable digging into logs, APIs and backend systems — not just surface ...

controls & principles CI/CD pipeline management, SRE skills (desriable) Familiarity with Agile development practices, working with engineering teams Coding/scripting e.g. C#, Java, Azure CLI, Bash, or PowerShell ...

performance-driven culture ✅ What You’ll Bring 🎓 Degree in Computer Science, Mathematics, Physics, Engineering , or another STEM discipline 💻 Strong programming skills in Python, C++, Java, C#, or KDB+/Q 🔍 Analytical mindset with a passion for tackling complex, data-driven challenges ⚡ Curiosity, drive, and the ability to thrive in fast ...

adoption of modern cloud-native and GitOps practices Mentor senior engineers and influence engineering culture at scale Skills Required: Strong backend engineering ability (Go, Java or .NET) Extensive hands on expertise designing and operating high scale distributed systems Deep expertise in cloud native architecture (GCP/AWS) Advanced Kubernetes ...

expertise with Control Tower and multi-account strategies Deep understanding of AWS security Strong Infrastructure as Code and automation experience Programming skills in Python, Java or similar languages Experience with Kubernetes/EKS This is a great role with a growing client. They offer a superb package ...

least privilege access enforcement What you need: Practical RSA IGL (or similar IAM) experience SQL/PSQL, Oracle, REST/SOAP web services, JAVA/JSP, HTML/CSS/JS basics Linux/Windows servers, SQL/Oracle databases Excellent attention to detail, communication skills, PowerShell scripting Incident management ...

customer and Oracle support requests Capabilities we are looking for Technical capabilities A proven interest in as many of the following as possible: · Programming: Java, Groovy, SQL, MDX, Calc Script · Cloud platforms: OCI, Azure, AWS · Cloud architecture – VMs, networking, identity, security · Databases and data modelling · System integration between cloud applications ...

years of software development experience, including 3+ years leading or managing engineering teams. Strong background in object-oriented programming using languages such as C#, Java, Python, or similar. Experience building Microsoft-based applications across front-end, back-end, and services layers. Hands-on experience with Microsoft Dynamics 365, including customization ...

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 ...