26 to 50 of 274 Java Engineer Jobs in London

Senior Full Stack Java Engineer

Location
Greater London, England, United Kingdom
Project description As a Senior Full Stack Java Engineer within the US Corporate Loans POD, you will design, develop, and deliver enterprise integration solutions connecting Loan IQ with upstream and downstream platforms. You will leverage modern cloud-native technologies, AI-assisted development tools, and Agentic AI practices … optimize application and integration performance. SKILLS Must have Core Engineering 8+ years of software engineering experience, ideally within Financial Services. Strong expertise in Java, Spring Boot, REST APIs, and distributed systems. Experience with Kafka, IBM MQ, or similar messaging technologies. Strong integration experience with Loan IQ, lending, banking ...

Java Engineer

Hiring Organisation
Hackajob Ltd
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
those who display and foster them,itsdeeply embedded within our DNA. Invest in us andwellinvest in you!. Job Description We are seeking a Java Engineer to join our UK Digital Data & Cloud Practice. Our Digital Practice is expanding rapidly and you will have the opportunity to develop … technical skills. You will be working for one of our high-profile trading clients within the financial services domain, contributing hands-on to a Java-based development team supporting a high-volume message processing environment. The team is heavily Java-focused, operating within a client ecosystem that relies ...

Principal Java Engineer - Backend Platform

Location
Greater London, England, United Kingdom
Principal Java Engineer - Backend Platform Salary: £76,340 - £100,340 Per Annum Contract: Full-Time, Permanent Location: Hybrid - minimum 2 days per week in office, Basingstoke/London/Bristol About the Role The Principal Software Engineer (Full-Stack, Backend-leaning) is a senior engineer responsible … technical leadership of the wider engineering team, given the seniority of this role. Skills and Experience Strong backend engineering background with production experience in Java (required). Demonstrated experience building low-latency, high-throughput systems - this is a core requirement, not a nice-to-have. Working knowledge ...

Java Engineer with AI

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent
their needs, and translating them into effective outcomes. You understand and align with Solirius Reply Values The Role: We are seeking a highly skilled Java Engineer with AI expertise to design, develop, and deploy intelligent, scalable applications. You will work at the intersection of backend engineering and artificial … passionate about clean architecture, performance optimization, and applying AI technologies to real-world business challenges. Requirements Key Responsibilities Design, develop, and maintain high-performance Java-based applications Integrate AI/ML models into production-grade backend systems Build RESTful APIs and microservices using modern Java frameworks Collaborate with ...

Full Stack Mobile Engineer – Java / Flutter / AWS

Location
Greater London, England, United Kingdom
Full Stack Mobile EngineerJava/Flutter/AWS Location: London/Cardiff/Midlands About the Opportunity We are looking for a talented and experienced Full Stack Mobile Engineer to join our mobile application development team. You will play an important role in building and enhancing … will help turn business challenges into practical, high-quality technology solutions. This is a hands‐on engineering role with a strong focus on Java backend development, REST APIs, database integration and end‐to‐end feature delivery. Experience with Flutter is highly desirable, while knowledge of AWS and Sitecore would ...

Senior Fullstack Engineer (Java/React/Python)

Location
Greater London, England, United Kingdom
Place to Work-CertifiedTM company and has won Best Workplaces UK multiple years in a row. We're looking for an experienced Senior Fullstack Engineer who is passionate about building scalable, high-quality software and helping teams grow. This is more than a hands-on engineering role … delivering software that makes a real business impact. What You'll Do Design, build and maintain scalable, secure and resilient backend systems using modern Java and the Spring ecosystem, alongside rich, responsive frontends built with React. Lead technical design and architectural discussions, ensuring solutions are maintainable, performant and aligned ...

Senior Java Web Engineer

Location
Greater London, England, United Kingdom
Senior Java Web Engineer About the Role Cognizant is seeking a highly technical, hands-on Java Developer to join a dynamic engineering team focused on building and enhancing enterprise-scale applications. The team is responsible for developing innovative, high-performance technology solutions that support complex business processes … technical and non-technical stakeholders. Continuously develop technical expertise and stay up to date with modern technologies, frameworks, and engineering practices. Essential Skills Strong Java fundamentals (Java 21 preferred) including core concepts (collections, concurrency, memory management). Solid experience with Spring Framework (Spring 4+) and Spring Boot 3.x. ...

Senior Java Engineer - Build Scalable, Innovative Apps

Location
Greater London, England, United Kingdom
seeking a Senior Java Engineer to design, build, and maintain high-performance Java applications across the ITES portfolio. You will collaborate with cross-functional teams to define and ship new features, while ensuring scalability and robustness of software solutions. You will mentor junior engineers, uphold coding standards … stay current with Java technologies and industry best practices. A Bachelor's degree in Computer Science or Software Engineering and 2–3 years of professional #J-18808-Ljbffr ...

Senior Java Engineer (Contract) – Fintech Platform (Hybrid)

Location
Greater London, England, United Kingdom
Explore Group in London is seeking a Senior Java Engineer on a contract basis to help build a greenfield fintech platform. You will design and implement low-latency, high-throughput microservices with Java 21+ and Spring Boot, owning features from architecture to production. You will partner with ...

Senior Java Engineer - FinTech (Hybrid London)

Location
Greater London, England, United Kingdom
Fynity is seeking a Senior Java Engineer to join a FinTech consultancy delivering high-performance, distributed platforms for Tier 1 financial institutions. You will stay hands-on and work with experienced engineers, architects and client teams to build scalable solutions. The role emphasizes deep Java engineering, microservices ...

Senior Software Engineer (Java)

Location
Greater London, England, United Kingdom
raised capital from some of the world's best investors: Sequoia Capital, Founders Fund, Brevan Howard Digital, Y Combinator, and Kaszek Ventures. Senior Software Engineer (Java) Location London Employment Type Full time Location Type Hybrid Department About ARQ ARQ is one of the fastest-growing fintechs … chance to grow fast with a world-class team, ARQ is the place to do it. What we're looking for As a Backend Engineer, you'll design, develop, and maintain scalable, secure, and high-performing backend systems that power our innovative products. You'll collaborate with a talented ...

Principal Java Engineer

Location
Greater London, England, United Kingdom
goals. The 3 G's of RE: "Get Shit Done." "Get Over Shit." "Give a Shit." We are seeking an experienced and opinionated Principal Java Engineer to join our high-performing engineering team, working on low 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 ...

Senior Lead Software Engineer - Java & Python (Low-Latency)

Location
Greater London, England, United Kingdom
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 ...

Senior Java Engineer: Cloud Microservices & AI

Location
Greater London, England, United Kingdom
Solirius Ltd. is seeking a Senior Java Engineer to join our engineering team in the UK. You will design, develop and maintain scalable Java applications with a focus on cloud-native microservices and modern software practices. AI-enabled capabilities are highly desirable as we explore advanced solutions. ...

Senior Java Software Engineer

Hiring Organisation
Uniting Ambition
Location
Greater London, England, United Kingdom
Senior Full Stack Engineer | Java/Kotlin + Modern Frontend | Global Travel Tech Hybrid 2-3 days London £90,000 We're hiring a Senior Full Stack Engineer for a world-leading travel technology platform used by millions of people globally. You'll own projects … from backend APIs through to the frontend UI — across a modern Java/Kotlin and JavaScript/TypeScript stack. What you'll do Build and maintain scalable backend services (Java/Kotlin, RESTful APIs, microservices, SQL/NoSQL) Develop responsive, modern frontend applications and collaborate closely with product ...

Java Engineer

Location
Greater London, England, United Kingdom
offices and a robust customer base across North America, Europe, and Asia Pacific. Overview of the Role We are seeking a Senior/Intermediate Java Engineer to join our R&D team. The role focuses on backend and middleware development using Java 17 and Spring, working across … high-availability system with kdb+ integration and strong security requirements. Key Responsibilities Develop, maintain, and optimise Spring-based web applications and REST APIs using Java 17. Integrate backend services with real-time kdb+ environments. Implement authentication (SAML/LDAP) and secure authorisation (RBAC/ABAC). Participate in distributed ...

Remote Full-Stack Java Engineer — Spring Boot & Angular

Location
Greater London, England, United Kingdom
Airswift is seeking a Full Stack Java Engineer to support a large-scale application platform hosting 40+ business-critical apps. Based in the Netherlands, the role combines onsite and remote work across a hybrid setup, with a focus on modernising legacy systems using Java/Spring Boot ...

Senior Java Engineer – Real-Time Data & Distributed Systems

Location
Greater London, England, United Kingdom
Korn Ferry is seeking a highly experienced Senior Java Engineer for a major financial services organisation in London, working on scalable, real-time data processing and distributed systems. The role is hybrid with 3 days onsite per week. Responsibilities include building event-driven architectures, streaming solutions with Flink ...

Senior Java Engineer - Spring Backend, Secure, Hybrid

Location
Greater London, England, United Kingdom
Systems, Inc. is seeking a Senior/Intermediate Java Engineer to join its R&D team in a hybrid London/Newry/Belfast role. Focus on backend and middleware development with Java 17 and Spring, integrating with kdb+ in a distributed, high-availability system. The incumbent ...

Senior Java Engineer: Front Office Fixed Income (Hybrid)

Location
Greater London, England, United Kingdom
Deutsche Bank is seeking a Senior Java Engineer for a Front Office/Fixed Income focused role in London. The contract runs for 6 months with hybrid work (in-office three days per week). You will develop and enhance trading systems, implement robust solutions, and contribute … shared codebase with emphasis on performance, scalability, and reliability. The ideal candidate has strong Java backend experience (Spring Boot), solid knowledge of Fixed Income trading workflows, and familiarity with #J-18808-Ljbffr ...

Principal Java Engineer: Low-Latency Payments, Hybrid UK

Location
Greater London, England, United Kingdom
Partners seeks an experienced Principal Java Engineer to join a high-performing team tackling low-latency, high-throughput payment systems. Hybrid role in the UK with modern tech stack and real-time services. You will own design decisions, mentor peers, and drive performance and observability enhancements across services. … ideal candidate has 10+ years in Java, SpringBoot, microservices, and cloud deployments (OpenShift/Kubernetes, AWS). #J-18808-Ljbffr ...

Java Engineer

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent
understand and align with Solirius Reply Values. The Role: This is an exciting opportunity to join our Software Engineering Practice as a Full Stack Engineer, to work alongside our team and help build out the capability. Requirements Key Responsibilities: Working across the full lifecycle from requirement gathering and design … terms of specific languages you should have commercial experience in some or all of the following; Substantial experience as a hands- on Full Stack Engineer Java 7/8 to current Applied knowledge of front end frameworks (Angular, React, other similar) Spring framework ...

Backend Java Engineer — Build Scalable Microservices

Location
Greater London, England, United Kingdom
Rightmove is seeking a Java Engineer to join our Native Apps engineering group. You will develop high-quality, scalable services powering our iOS and Android apps, work with a cross-functional team, and promote automated testing and a thoughtful, test-driven approach across the team. You’ll design ...

Senior Full-Stack Java Engineer - AI-Driven Integrations & Azure

Location
Greater London, England, United Kingdom
Luxoft in London is seeking a Senior Full Stack Java Engineer to design, develop, and deliver enterprise integration solutions connecting Loan IQ with upstream and downstream platforms. You will leverage AI-assisted development tools and Agentic AI practices to automate SDLC processes, improve coding efficiency, testing, debugging ...

Senior Java Engineer, Real-Time Backend Platform

Location
Greater London, England, United Kingdom
Hawk-Eye Innovations Ltd. seeks a Principal Java Engineer to lead backend architecture for a new sports technology product. This hybrid role requires expertise in building high-performance, low-latency systems for real-time data. Candidates should have a strong background in Java and experience with cloud ...