1 to 25 of 119 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 ...

experience delivering solutions with Camunda (Camunda 7 or Camunda 8) Strong experience with BPMN 2.0 and ideally DMN Strong software engineering background in Java Experience building applications/services with Spring Boot Experience integrating workflow platforms with REST APIs, microservices and distributed systems Strong understanding of workflow orchestration, business process ...

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 ...

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 ...

Docker/Kubernetes), and CI/CD tooling (TeamCity or equivalent). You should have solid scripting or development experience (Python, PowerShell, C# or Java), alongside exposure to monitoring and observability tools (e.g. ELK, Prometheus, Grafana). Experience across cloud environments (Azure/AWS), as well as Windows and Linux ...

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 ...

experience building modern web and mobile applications across frontend and backend Proficient with modern frontend frameworks (e.g. React, TypeScript) and backend technologies (e.g. Node.js, Java, Python, or similar) Solid experience with CI/CD pipelines and DevOps tooling (e.g. Jenkins, Ansible), with exposure to containers and Kubernetes Deep understanding ...

with production engineering rigor: microservices, containers (Docker/K8s), serverless, CI/CD Solid programming skills (one or more): Python, TypeScript/JavaScript, Java, C# Experience with APIs and integration patterns: REST/gRPC, event-driven systems, queues, workflow engines Security & Governance (Must Have) Understanding of GenAI-specific threats: prompt ...

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 ...

more interpreted languages (eg. Python, Bash, PowerShell, Perl, Ruby) and one or more compiled languages (eg. C, C++, C#, Golang, Rust, Java, Objective-C) One or more of the following certifications (OSCP, OSCE, GPEN, GXPN, CRTO, CREST Certified Simulated Attack Manager) Where and how you'll work This ...

Java Developer/Consultant (Java SpringBoot AWS) 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. As a Java Developer/Consultant you will … 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 ...

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 ...

Client: Largest American Credit Card Company Location: Burgess Hill 3 days/week Years of Exp: 6-9 years Skills: Go, Java, Git, REST, Jenkins, NoSQL, Postgres/ql £40-£50/hr Inside IR35 Visa sponsorship is not available. We're looking for an enthusiastic, diligent Golang Software Engineer ...

data platforms and pipelines Deep cloud experience (AWS, Azure, or GCP) Advanced SQL skills and experience with at least one backend language (Python, Scala, Java, etc.) Hands-on experience with data warehouses, ETL/ELT, and distributed systems A mindset focused on performance, reliability, automation, and scalability Confidence working cross ...

Excellence: Proven experience leading and supporting software engineering teams to achieve business goals. Technical Breadth: Excellent knowledge of RESTful API development in modern languages (Java, Python, or .Net) and experience with Cloud environments (AWS or Azure). AI Awareness: You aren't necessarily a researcher, but you have expectations ...

their goals. The 3 G’s of RE: “Get Shit Done.” “Get Over Shit.” “Give a Shit.” We are seeking an experienced and opinionated Java Developer to join our high-performing engineering team, working on l ow latency , high-throughput systems in the payments processing domain. This hybrid role … offers the opportunity to build scalable, real-time services using modern technologies. If you’re passionate about performance, have strong Core Java and SpringBoot expertise, and thrive in a collaborative yet opinionated engineering culture, we want to hear from you. Key Responsibilities : Design, develop, and optimize low-latency, high-throughput ...

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 Full Stack or Software Developer 2+ years of proven management experience Strong experience with React and modern frontend development Backend development experience (Java preferred) Solid knowledge of JavaScript, HTML, and CSS Experience working with PostgreSQL databases Experience using Git in a collaborative development environment Ability to communicate technical concepts ...

The ability to work with data throughout its lifecycle, from collection and storage to processing and analysis. Data developers are responsible for designing, implementing and maintaining the systems and infrastructure needed to handle large volumes ...

Java Developer Job Type: Permanent Location: Remote (Occasional visits to London) Salary & Benefits Up to £55,000 per annum 5% pension Medical cover Travel expenses covered About the Role Stealth IT are looking for a Java Developer to join their team on a permanent basis. This is an opportunity … work directly with the organisation in a client-facing environment, contributing to the delivery of modern software solutions. Key Responsibilities Develop and maintain Java-based applications Work with Spring Boot to build scalable services Contribute to microservices-based architecture Collaborate with cross-functional teams in a client-facing setting Support ...

intuition with that, and some modern messaging like Aeron or ZeroMQ." 12+ years of experience. - Lead the development, testing, and maintenance of low-latency Java applications. - Collaborate with cross-functional teams to gather requirements and design system architecture. - Optimize application performance and troubleshoot latency issues. - Mentor junior developers and ensure … industry trends and integrate relevant technologies into projects. SKILL REQUIREMENTS - Bachelor's degree in Computer Science, Engineering, or a related field. - Proven experience in Java development, with a focus on low-latency systems. - Strong understanding of multithreading, concurrency, and performance optimization. - Experience with frameworks and libraries such as Spring, Hibernate ...