151 to 175 of 277 Java Jobs in London

RESTful APIs and Webservices Confident communicator with the ability to explain technology to non-technical audiences Background in Software Engineering using C#, C++, Java would be a hugebonus ...

development. Solid understanding of core cybersecurity concepts: network security, cloud security, cryptography, and forensics. Familiarity with scripting or programming (Python, Bash, C/C++, Java). Knowledge of network protocols and common analysis techniques for Windows and/or Linux. Awareness of APTs and their TTPs, and experience interpreting threat ...

application support environment 2+ years’ experience working with Red Hat Linux (or other Unix variants), including scripting 2+ years’ experience supporting applications such as Java, .NET, Apache or IIS Desirable: Experience within the financial services or trading environment Knowledge of Windows Server Familiarity with ITIL frameworks Exposure to market data ...

when required. Must have flexibility/willingness to work on-call hours (both weekday and weekend). Ideally, some software development knowledge (SharePoint, Python, Java or Kotlin) as down the line there will be specifically related projects. Assist with writing of end user and IT documentation as required. Role-based ...

least 1 year of experience as a software engineer in paid full-time employment Knowledge and commercial experience with at least one of, Java, C# or Python Experience with at least one non-managed/manual-memory language, e.g. C, C++, Rust. At least one of the following: Exposure ...

About the Role You will act as the security lead embedded within an application development delivery team, working across a complex hybrid environment including Java/React, J2EE microservices, RPG/JSP on z/OS, and API-driven architectures. Your mission: enable fast, secure delivery by uplifting application security ...

field of Software Engineering Proficient with Object Oriented Programming concepts with a strong understanding of Data Structures, Algorithms, and Computer Science fundamentals Experience with Java/Scala (JVM) and Spring along with a good grasp of OO design with strong design patterns knowledge. Experience with cloud-computing platforms such ...

Full Stack Developer - Active SC, NPPV3, Java Up to £550 per day - Inside IR35 Remote 6 months My client is an instantly recognisable consultancy who require a Full Stack Developer with Active SC and NPPV3 clearance for a client within the public sector. Key Requirements: Proven commercial experience working … Full Stack Developer within the Public Sector. Active SC and NPPV3 Clearance. Senior-level expertise in either Java/Spring (Boot, Data JPA, Security) or JavaScript/TypeScript with React; mid-level experience acceptable in the other Proven experience delivering high-quality, cross-functional solutions using microservices and micro-frontend ...

design, build, and deliver customer-facing features across our greenfield platform. You’ll work end-to-end—crafting TypeScript frontends and robust Java back-ends—while learning from experienced engineers and contributing to a modern, scalable architecture . This is a hands-on role with plenty of opportunity to develop … mentorship, learning, and engineering excellence. Key Responsibilities Feature Delivery: Collaborate with senior engineers to deliver new features from design to production. Back-End Engineering (Java): Build APIs and microservices using Java (Spring Boot, Micronaut, or Quarkus), with guidance on best practices for performance and reliability. Front-End Engineering (TypeScript – Nuxt ...

Title: Senior Java Engineer (Smart Contract) Location: London Contract: 12 Months Are you a passionate Senior Java Developer looking to make a significant impact in an innovative environment? Our client is seeking a talented individual to join their dynamic team in London, where you'll design and develop cutting-edge … fast-paced atmosphere and enjoy collaborating with cross-functional teams, this opportunity is for you! What We're Looking For: Strong expertise in Java and Spring/Spring boot. Hands on Smart Contract (Solidity) experience in essential Experienced in financial services , Ideally Commercial Lons. Experience in developing and deploying microservices ...

Back End Developer/SRE (Java JVM) London/WFH to £110k Are you a Back End Developer/SRE with a strong knowledge of Java and JVM internals? You could be progressing your career in an impactful role at a global Fintech that has been consistently voted … advisor to influence system design, ensuring reliability standards and driving improvements across the platform. You'll have a broad scope including hands-on coding (Java) to build tools and automation, incident response, observability, performance optimisation and operational excellence, working with large scale Java JVM distribution systems and message brokers such ...

Lead Software Engineer – Java Microservices | London (1 day per week on-site) | £74,000 – £92,000 + Package We’re partnering with a leading UK bank to recruit a Lead Software Engineer with strong Java and microservices expertise. This is a hands-on role building high-performance, scalable software … building robust microservices that support high-traffic user experiences, serving thousands or millions of concurrent users. What We’re Looking For Proven experience developing Java microservices for high-traffic applications (retail, e-commerce, media, or streaming platforms). Hands-on experience with the full software lifecycle in agile environments ...

Lead Java Developer - £85k & LondonJava, Springboot, Microservices, AWSI’m partnering with an established tech firm that’s been building digital platforms and mobile products for over 2 decades.They work with well-known businesses in highly regulated industries, where systems need to be secure, reliable and built properly. They … things are designed and improved, and there’s a real emphasis on clean code, testing and maintainability.Their current tech stack is a mixture of Java, Springboot, Microservices, Kakfa, AWS, CI/CD, SQL, Kubernetes to name a few areas. We need strong engineers who are great communicators ...

legacy enterprise integration platform. We need an experience Architect who can investigate and validate migration/modernisation options to move an existing Oracle WebLogic Java Integration architecture, running on Oracle RAC, to a modern AWS-hosted solution. Skills & Experience: Proven experience as a Lead Technical Architect, ideally in Central government. ...

cloud hosting. Key Responsibilities Lead a time-boxed 6-week technical investigation and PoC . Analyse the current legacy integration platform (WebLogic, Java Integration, Oracle RAC). Review design hosting architecture options. Build prototypes to validate recommended approaches. Produce clear architectural outputs and recommendations for stakeholders. Required Skills & Experience Proven ...

quality training and benchmarking data. Who You Are Safety Expert: Proven experience in adversarial testing and model alignment. Tech Stack: Strong Python , SQL , and Java . AI Specialist: Hands-on experience with LLMs and prompt engineering. Academic: MSc/PhD in AI/ML (Safety or Agentic systems focus preferred ...

part in shaping architecture, mentoring engineers, and driving best practices across the platform. They’re looking for people with experience in: Kotlin (or strong Java engineers willing to transition) AWS or other major cloud platforms Event-driven & microservices architectures Working in modern, product-driven tech environments Leading teams while remaining ...

mesh, leading technical conversations independently. Profile* Hands-on engineer with strong communication and facilitation skills.* Recent experience working with Python, .NET, or Java (broad experience is acceptable; deep specialization is not required).* Self-starter who is comfortable leading discussions and engaging stakeholders without close supervision.* Motivated by scaling adoption ...

mesh, leading technical conversations independently. Profile * Hands-on engineer with strong communication and facilitation skills. * Recent experience working with Python, .NET, or Java (broad experience is acceptable; deep specialization is not required). * Self-starter who is comfortable leading discussions and engaging stakeholders without close supervision. * Motivated by scaling adoption ...

lifecycle design Equity & Index Expertise Equity index ingestion and maintenance Basket and index versioning Equity futures lifecycle processing Technical Skills Strong ML/Java development capability Experience building and supporting interfaces and APIs Solid SQL skills for data analysis and troubleshooting XML/XSD knowledge for feed definition and validation ...

keen interest in Cyber Security and understanding of key concepts and protocols You can code with any OO programming language (e.g. Python, C++, C#, Java) You have experience of using different operating systems and networking technologies You have a good understanding (and interest in) low level concepts including operating systems ...

Full Stack Developer (80% React/20% Java) Location: Fully Remote (UK Based) Rate: £525 per day (Inside IR35) Clearance: Active SC Clearance (Essential) Contract Length: Initial 6 months We are looking for a Frontend-heavy Full Stack Developer to join a long-term digital transformation programme. This … high-impact role within a complex, state-driven environment, perfect for a React expert who is comfortable dipping into the Java backend when required. The Technical Balance React (80%): You will lead on the frontend, building high-performance, accessible (GDS-aligned) user interfaces and complex dashboards. Java (20%): You will ...

Senior Java Developer | Backend | Microservices | FinTech | London | Hybrid | £120k I'm proud to partner with a global financial organisation, creating an app that allows people in countries like Mexico, Argentina, Colombia, and Brazil manage money in digital dollars and digital euros and it’s designed to protect users from local … with partners such as Mastercard, Stripe, OpenAI to make sure they leverage latest technology in all their products.They are looking for an experienced Senior Java Developer, predominantly on version 21 with PostGres Database and Spring Boot, to help develop their rapidly growing application, by building REST APIs, Microservices and evolving ...

Lead Java Developer - £140k, Equity, Sign-on Bonus Java25, Springboot, Microservices, AWS, TDD, React I am working with a high-growth FinTech that’s about to enter a huge new chapter.They are a fast-scaling FinTech that’s in the middle of a major rebrand, new name, new logo … decision, nothing is top-down. It’s collaborative, thoughtful, and engineers shape the how, why, and when behind the product.They’ve just upgraded to Java 25, which the team is genuinely excited about. With eight product teams spanning credit, payments, business tools, growth, and customer experience, engineers are placed where ...

Java Developer Permanent Location: Home Based Salary: £70,000 - £75,000 Skills: Java 8, Spring, Maven, Git, JUnit, Web APIs (REST/JSON and XML/SOAP), SC Clearance We are looking to recruit an SC Cleared Java Developer to join a leading technology consultancy working on the upgrade, enhancement ...