1 to 25 of 296 Java Jobs in the City of London

data migration initiatives, while working closely with engineering, DevOps, and business stakeholders in an agile environment. This role requires strong hands-on experience with Java and Spring-based frameworks, extensive knowledge of relational and non-relational databases, and proven capability in architecting scalable, secure, and high-performance data solutions … functional teams to modernize legacy database systems and migrate them to AWS-managed and cloud-native databases. Develop and maintain server-side applications using Java (Java 17+) , Spring Boot (2.5+) , and Spring Framework (5+) . Implement solutions leveraging polymorphic data types and Abstract Data Types (ADTs) to support complex data ...

Java Developer Hybrid Working - Local - 1-2 days a week on site. Financial Services Lorien's leading banking client is looking for a Java Developer who thrives on delivering low-latency, scalable services and event-driven architectures. If you're experienced with Java , Apache Kafka , OpenShift , and have a strong … Umbrella. Working in a Hybrid Model of 2 days a week on site. What you'll do Design, build, and maintain microservices in Java (preferably Java 11+/17) for mission-critical payment flows. Develop event-driven solutions using Kafka (producers/consumers, schema management, stream processing). Deploy ...

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 ...

Technical Lead (Java) UK (Remote with occasional London visit) £100,000 – £115,000 + Benefits Company Overview: This company is changing how people travel worldwide, and you could help. They build the tech behind major rail booking platforms, making travel easier and greener. With teams worldwide, they’ve tackled complex … team quality and confidence What they’re looking for: BSc or equivalent experience, plus 5+ years of hands-on development Strong knowledge of Java 17+, Spring, Spring Boot and Hibernate Experience with MySQL, Aurora, DynamoDB and Redis Experience working on SaaS products. Background in booking, payments or e-commerce ...

Senior Java Developer - Java, Springboot & AWS – paying up to £650/day (Inside IR35) – Hybrid (2x a week - London) – 6 month contract Our client is seeking a Senior Java Developer who is passionate about clean code, cloud-native systems, and building technology that makes a real impact. This … unique opportunity to work in an agile, high-ownership engineering culture. What You'll Be Doing: Build and scale backend services using Java and Spring Boot Shape a modern microservices architecture for a high-availability platform Deploy and manage services in AWS with Kubernetes (EKS) Design, implement, and own features ...

building responsive front-end experiences Strong back-end capabilities with Node.js and Express, plus experience in at least one of C#, Java, or Python for diverse system requirements Demonstrated experience designing scalable RESTful APIs, microservices architectures, and both SQL and NoSQL database solutions Solid understanding of cyber security principles including ...

Essential skills and experience: 5+ years experience of developing complex applications using an OO language (ideally Python, but experience in C++/C#/Java/etc would also be considered) Experience working on mission-critical applications, following a robust SDLC Excellent communication and problem-solving skills; and a strong ...

client EBRD has reopened this position and is looking for a strong Senior Java Developer with experience in OpenText Livelink implementation . Java + Livelink is highly preferred , but candidates with strong Java experience and some exposure to Livelink APIs will also be considered. Position Details Role: Senior Java Developer … Java + OpenText Livelink) Type: Fixed-Term Contract (FTC) Duration: 6 Months Location: London, UK Work Mode: Hybrid (2–3 days/week onsite) Client: EBRD Interview Rounds: 2 Notice Period: 2–3 weeks acceptable Job Description We are looking for an experienced Senior Java Developer with strong expertise ...

proposals, influencing solution design and delivery approach. Tech Stack You’ll work with modern, scalable technologies and frameworks including: Languages: JavaScript/TypeScript, Java, Frameworks: React, Angular, Node.js, Spring Boot, .NET Cloud Platforms: AWS, Azure, GCP CI/CD: Jenkins, GitHub Actions, Azure DevOps IaC: Terraform, CloudFormation, Azure Bicep Safe ...

Build Circle success stories. A non-exclusive list of some of the tooling and technology we are currently using: * .NET Core 3.1, Node.js, Python, Java/Kotlin * Kubernetes, Terraform, infrastructure-as-code * Typescript, React, Node, GraphQL, Apollo * AWS: Lambda, ECS, CloudFront, API Gateway, DynamoDB, Aurora, S3, SQS, SNS, Kinesis * Azure ...

Healthcare Frontend Toolkit and Design System to build accessible, user-focused interfaces. Develop back-end services primarily in Python , while supporting existing systems in Java and .NET . Maintain and enhance legacy services using Oracle SQL PL . Implement robust CI/CD pipelines and infrastructure using AWS, Azure ...

design sessions and identifying risks early Working closely with Product throughout the full delivery lifecycle 🔧 Essential Experience Strong programming experience in Golang (or Java/C# with a desire to work in Go) Experience with SQL (PostgreSQL) and NoSQL (MongoDB) Exposure to Kafka or other messaging systems Solid understanding ...

policies and participate in audits and vulnerability remediation. Maintain accurate documentation, including topology diagrams, runbooks, and configuration baselines. Support proprietary messaging APIs using C++, Java, Python, and C# programming languages. Provide support for proprietary cache and gateways that integrate applications with the messaging service. Required Skills & Qualifications: 3+ years ...

working with complex data challenges. Python as the preferred back-end language for new services, however we also need to support languages including Java and .NET. Oracle SQL PL to support existing services. Infrastructure/DevOps technologies including AWS, Azure, SQL server, Postgres, GitHub, Azure DevOps, Linux, docker and Kubernetes ...

working with complex data challenges. Python as the preferred back-end language for new services, however we also need to support languages including Java and .NET. Oracle SQL PL to support existing services. Infrastructure/DevOps technologies including AWS, Azure, SQL server, Postgres, GitHub, Azure DevOps, Linux, docker and Kubernetes ...

NoSQL databases (especially MongoDB) or SQL (e.g., Postgres) Understanding of web standards, accessibility and development best practice Bonus Skills Building microservices in C# or Java Integrating LLMs (e.g., LangChain, Vercel AI) Using the GOV.UK Design System and Nunjucks What You’ll Love You’ll join a community that values technical ...

What We're Looking For 6+ years of software engineering experience. Strong proficiency in a back-end server-side language (Go preferred, Python or Java applicable). You will have built and designed distributed systems and scalable architectures. Experience with relational databases (Postgres) and NoSQL databases (MongoDB, Redis, Cassandra). ...

Java Full Stack Engineer – Consultant/Senior Consultant Salary: £55,000 – £70,748 base plus benefits, perks, and healthcare options! Base Locations: London, Manchester, Newcastle or Glasgow (Hybrid working - operate out of any base!) Organisation : Global IT consultancy Are you a passionate Java Full Stack Engineer looking to build modern … engineering community where you’ll work with cutting-edge technologies and deliver meaningful outcomes for clients across the UK. About the Role As a Java Full Stack Engineer, you’ll be responsible for designing, building and delivering high-quality digital products that solve complex business challenges. You’ll work closely ...

Stack Cloud: AWS (EC2, S3, RDS, Lambda, EKS, IAM, Neptune), Azure (ADF, Databricks, Synapse, Data Lake, AKS, Event Hub, Power BI) Architecture: Microservices, APIs, Java/Spring Boot DevOps: GitLab, Azure DevOps, Kubernetes, Helm, Terraform Data: Data modeling, data lakes, analytics platforms, graph technologies What We’re Looking For 20+ ...

agile environments Desirable Experience Docker, Docker Compose Terraform or other IaC tools EF Core, relational DB experience NoSQL (MongoDB, Cosmos DB) Microservices in Java/JS/TS Experience with LLM/AI integration frameworks (e.g., LangChain) Familiarity with modern design systems Additional Information A flexible benefits package is available ...

difference! Required Skills & Experience: Extensive experience in frontend technologies (e.g., Vue.js, React) with a focus on UI/UX. Proven backend expertise, particularly with Java (Python, Node.js a plus), and experience building distributed microservices-based architectures. Strong knowledge of system design principles, scalable architecture patterns, and API design. Hands ...

agile environments Desirable Experience Docker, Docker Compose Terraform or other IaC tools EF Core, relational DB experience NoSQL (MongoDB, Cosmos DB) Microservices in Java/JS/TS Experience with LLM/AI integration frameworks (e.g., LangChain) Familiarity with modern design systems Additional Information A flexible benefits package is available ...

Java Software Engineer Java Software Engineers needed for a fast growing payments company on a mission to make global transactions faster, smarter, and more reliable. Their platform powers real-time financial interactions for businesses across the world, and we’re scaling rapidly. The Role: As a Java Engineer, you will … innovate and deliver robust solutions within a modern cloud-native environment. What You’ll Do: Build and maintain reactive, event-driven services using modern Java and frameworks such as Spring WebFlux or Project Reactor Design scalable Microservices that support high-throughput payment workflows Collaborate with other engineers to optimise system ...

Clearance (or eligibility at minimum) Proven full stack development experience within the UK public sector Cloud experience (AWS, Azure, or GCP) Strong experience with Java or Python Front-end experience using modern JavaScript frameworks (e.g. React, Angular, Vue) Familiarity with RESTful APIs, databases, and version control Experience working in agile ...

overall system design: service boundaries, data ownership, scaling, and observability Essential Qualifications: Built modern full-stack applications w/focus on backend (Python/Java/Go) Worked with a variety of storage technologies (eg. Postgres, Mongo, Redis, Object) Experience with async and bi-directional communication protocols and patterns (eg. ...