1,751 to 1,775 of 2,319 Java Jobs in London

maturing a high‐performing engineering team. What You’ll get to do Provide hands‐on development across front‐end (React) and back‐end (Java) components. Lead code reviews and ensure adherence to engineering standards. Establish best practices for: Clean code and maintainability; Testing strategy (unit, integration, E2E); CI/… Strong experience as a Full Stack Engineer, with proven architectural responsibility. Deep understanding of modern front‐end frameworks, including React; Backend development in Java (Spring Boot preferred); RESTful APIs and event‐driven/microservices architecture; Relational and analytical databases (e.g. PostgreSQL, ClickHouse or similar). Experience with CI/ ...

performance and load testing design, interpreting results in the context of SLAs and platform growth targets Establish and evolve coding and integration standards across Java/Spring services on the platform Drive adoption of structured security practices through the Security Champions programme and DevSecOps tooling integration Collaboration & Influence Provide technical … track record of owning architectural decisions end-to-end: from initial discovery and option analysis through to documented ADR and post-implementation review Strong Java/Spring Boot background with demonstrable experience designing cloud-native microservices at scale Experience designing and operating event-driven systems using Kafka or equivalent messaging ...

performance and load testing design, interpreting results in the context of SLAs and platform growth targetsEstablish and evolve coding and integration standards across Java/Spring services on the platformDrive adoption of structured security practices through the Security Champions programme and DevSecOps tooling integrationCollaboration & InfluenceProvide technical mentorship to Associate … themProven track record of owning architectural decisions end-to-end: from initial discovery and option analysis through to documented ADR and post-implementation reviewStrong Java/Spring Boot background with demonstrable experience designing cloud-native microservices at scaleExperience designing and operating event-driven systems using Kafka or equivalent messaging platformsHands ...

Services. Build full-stack applications and internal engineering tools, including backend services, APIs, automation layers, and user-facing interfaces using technologies such as Python, Java, React, or Angular. Engineer scalable solutions that support central operational use cases such as self-service tooling, operational dashboards, alert enrichment, incident reduction, service recovery … Computer Science, Engineering, or a related technical discipline, or equivalent practical experience. Strong full-stack development experience, with hands-on expertise in Python and Java for backend or service-layer engineering. Strong working knowledge of front-end development using React or Angular, including building interfaces for operational or engineering ...

performance and load testing design, interpreting results in the context of SLAs and platform growth targets* Establish and evolve coding and integration standards across Java/Spring services on the platform* Drive adoption of structured security practices through the Security Champions programme and DevSecOps tooling integration## ## **Collaboration & Influence*** Provide … track record of owning architectural decisions end-to-end: from initial discovery and option analysis through to documented ADR and post-implementation review* Strong Java/Spring Boot background with demonstrable experience designing cloud-native microservices at scale* Experience designing and operating event-driven systems using Kafka or equivalent messaging ...

works fluently with agentic AI coding assistants. Someone who is equally at home crafting a refined React user interface and designing the distributed Java services and data flows behind it. AI tools have made producing code far faster; they have not made it any more trustworthy. Driving generated code … development with TypeScript and JavaScript, building user interfaces in React and working with the Node.js tooling around them. Back-end service development in Java, implementing and consuming REST APIs. Preferred Qualifications Fluency in reading, reviewing, and critically evaluating code you did not write, including code a model generated. Experience building ...

CIDAP platform, ensuring alignment with Citi's enterprise technology standards, risk appetite, and long-term business objectives Provide authoritative technical guidance on backend engineering (Java/Spring), Web3 infrastructure, blockchain integration patterns, and distributed systems design Champion engineering excellence across the platform — setting the bar for code quality, system resilience … senior technical leadership roles; experience within financial services or highly regulated industries strongly preferred Extensive hands‐on expertise in backend web application development using Java and Spring frameworks, with deep knowledge of enterprise architecture patterns, microservices, and distributed systems Solid direct people management or team lead experience, with a track ...

CIDAP platform, ensuring alignment with Citi's enterprise technology standards, risk appetite, and long-term business objectivesProvide authoritative technical guidance on backend engineering (Java/Spring), Web3 infrastructure, blockchain integration patterns, and distributed systems designChampion engineering excellence across the platform — setting the bar for code quality, system resilience, scalability … into senior technical leadership roles; experience within financial services or highly regulated industries strongly preferredExtensive hands-on expertise in backend web application development using Java and Spring frameworks, with deep knowledge of enterprise architecture patterns, microservices, and distributed systemsSolid direct people management or team lead experience, with a track record ...

policy, catalogs, and tax rules; use models for language, ranking, and tool orchestration. What you'll do: Design and ship features in backend services (Java and Spring Boot) and/or web (TypeScript), with AI services in Python or TypeScript where that is the right fit Own APIs and event … from What we're looking for: 5+ years building production software (8+ for Staff). Strong CS fundamentals. Depth in at least one of: Java/Spring Boot, modern TypeScript, or Python services. Willingness to cross the boundary. Experience with relational data modeling, APIs, and cloud (AWS). Messaging systems ...

Java Developer – Algo Development Technology (Equities)Java Developer – Algo Development TechnologyAbout MillenniumMillennium is a global, diversified alternative investment firm, founded in 1989. Defined by evolution, innovation and focus, Millennium's mission is to deliver results for our investors. Our people are empowered with both independence and support: the autonomy … frameworks Deep understanding of market microstructure, pre-trade risk checks, limit frameworks, and regulatory requirements, and how they affect execution algorithm performance Expert-level Java skills, with extensive experience building low-latency, GC-aware, high-throughput distributed systems Strong understanding of distributed, event-driven architectures and messaging technologies such ...

Hamilton Barnes Associates Limited is seeking a Python Developer with strong Java experience for a 12-month hybrid contract in London. The role involves designing, developing, and maintaining backend applications within a financial services context, collaborating across the full SDLC. Key responsibilities include building RESTful services with Spring Boot, integrating … with Java components, and ensuring performance and security. #J-18808-Ljbffr ...

Description We’re looking for Java Developers with experience building low-latency systems to join us on a high-performance trading and real-time data project, for a major financial institution. You’ll work on mission-critical applications where performance, scalability, and reliability truly matter — the kind of systems that … bring world-class engineering principles to projects at the very heart of modern finance. Your work will focus on writing and tuning high-performance Java frameworks, improving throughput and latency, and applying event-driven, microservice-based architectures. You’ll collaborate closely with other talented engineers, helping to shape elegant solutions ...

leading fintech organization based in London is seeking a Senior Java Software Engineer to join their Treasury Engineering function. This hybrid role entails building systems to manage capital optimization while providing significant architectural ownership. Candidates should possess strong backend engineering experience, especially in Java and Spring Boot, coupled with knowledge ...

Overview Our client, a growing Consultancy, is looking for a Java/React Developer to join their London based team. The work undertaken will be for a project in the Banking sector. The role is offered on a hybrid basis and candidates will be expected to be in the London … days per week. Responsibilities Applicants will be responsible for leading the design, implementation and delivery for engineering efforts spanning 1-2 teams, working in Java and React - With both Front end and back end exposure. Contributing to all parts of the software's development including design, development, documentation and testing. ...

# Senior Test Engineer (Hybrid) – LondonLondon**Location:** London**Start date:** Immediate**The role:**AlphaSights is seeking a highly experienced, self-driven Senior Test Engineer to join our Software Engineering Team. We are a digital business ...

Start date: ImmediateThe role: AlphaSights is seeking a highly experienced, self-driven Senior Test Engineer to join our Software Engineering Team. We are a digital business in which continuous uptime, product quality, and user experience ...

Skills and Experience You possess strong development experience in Java and Kotlin. You have familiarity with Agile processes and Test-Driven Development (TDD). Technical Expertise You understand Computer Science, Object-oriented Programming (OOP), Design Patterns, Data Structures, and Algorithms. Knowledge of additional technologies such as Scala, React, Spring, Oracle ...

JPMorganChase in London is seeking a Sr Lead Software Engineer (Java/Python) to help design, build, and deliver high-performance trading software within Digital Markets Execution Technology. You’ll contribute as a core technical member of an agile team, guiding architecture, coding, testing, and operations to meet ambitious objectives. ...

Falcon Smart IT Limited is hiring a Senior Java Architect to lead design and delivery of enterprise-scale banking and payments platforms in London. The role requires deep expertise in payments, messaging architectures, cloud-native platforms, AI-driven engineering, and enterprise solution architecture. You will architect real-time payment workflows ...

ClearRoute is seeking an experienced Full Stack Engineer to join our London team, building across React/React Native front ends and Java/Spring Boot services, with RESTful APIs and cloud infrastructure on AWS. The role is hybrid, onsite 2–3 days a week in Central London, focusing ...

solutions within the Data Platform & Strategy team of Corporate Risk Technology. You will lead high-impact engineering efforts, develop secure, scalable production code in Java, Python, or other modern languages, and collaborate with agile teams to advance cloud-native data platforms and observability practices across the organization. #J-18808-Ljbffr ...

partner, is seeking a Senior Fullstack Engineer to shape technical direction, mentor teams and embed AI into delivery. You’ll design scalable backend in Java/Spring and frontend in React, building APIs and microservices that power business outcomes. You’ll collaborate with clients across industries, champion quality, testing ...

engineering initiative to create a brand-new, real-time banking platform focused on scalability, availability, and zero-downtime reliability. The platform uses microservices with Java/Spring Boot, Kafka for real-time streaming, RESTful APIs, and automated CD pipelines. The team operates with strong autonomy, mentoring engineers and driving architectural ...

deliver end-to-end solutions for cloud-native microservices applications. The ideal candidate will have significant experience in back-end software engineering, specifically with Java and cloud technologies. Responsibilities include ensuring system reliability, optimizing performance, and supporting products through their lifecycle. This role demands strong communication skills and the ability ...

performance engineering team building a real-time banking platform. You’ll bring strong experience with Continuous Deployment in production and cloud-native services using Java/Spring Boot. You’ll design, build and operate robust distributed systems with emphasis on reliability, observability and operational excellence, and mentor peers while collaborating ...