176 to 200 of 337 Java Jobs in London

testing principles. Familiarity with SQL or Excel for data validation is advantageous. Knowledge of testing tools (e.g., Selenium, JIRA) or programming languages (e.g., Python, Java) is a plus. What We Offer: Structured training and professional development opportunities. A collaborative and supportive team culture. Competitive salary with a comprehensive benefits package. ...

reach for at 2am—observability, customer management, compliance monitoring, maintenance APIs, and the safety guardrails that let teams ship fast without breaking things. Go, Java/Scala, TypeScript, Kubernetes, and more. Both are cross-organizational roles with high autonomy, real ownership, and plenty of ambiguity. If you thrive on complexity ...

testing principles. Familiarity with SQL or Excel for data validation is advantageous. Knowledge of testing tools (e.g., Selenium, JIRA) or programming languages (e.g., Python, Java) is a plus. What We Offer: Structured training and professional development opportunities. A collaborative and supportive team culture. Competitive salary with a comprehensive benefits package. ...

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 ...

trade lifecycle, market structure, and regulatory requirements (MiFID II, Reg NMS, CAT/TRF). Experience with message-driven architectures, SQL, and scripting in Java or Python. Excellent problem-solving skills and the ability to work closely with traders and engineers in fast-paced environments. Apply today or email your ...

architecture of the company from early days Required experience Experience with Python in production systems, plus at least one additional backend language (e.g. Rust, Java, Go) Experience building and running production backend systems Comfortable turning ambiguous research or ideas into real software Solid understanding of APIs, databases, and distributed systems ...

market hours when required About You Degree in Computer Science, Engineering, Mathematics or a related scientific discipline Practical programming knowledge (Python essential; C# or Java advantageous) Strong communication skills and confidence leading client discussions Highly motivated with a strong willingness to learn and develop Interest in financial markets and trading ...

record leading multi-geography, multi-vendor technical collaborations. Deep understanding of cloud SaaS architectures and insurance/health-tech domains. Hands-on technical credibility (Java, Kafka, AWS) combined with executive presence and negotiation skills. Demonstrable expertise in tools/technologies for the design, development, build, testing and deployment of various ...

record leading multi-geography, multi-vendor technical collaborations. Deep understanding of cloud SaaS architectures and insurance/health-tech domains. Hands-on technical credibility (Java, Kafka, AWS) combined with executive presence and negotiation skills. Demonstrable expertise in tools/technologies for the design, development, build, testing and deployment of various ...

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 ...

Stack Ownership: Take total agency over the stack, connecting new services and remodeling infrastructure to create a seamless experience. Mission-Critical Problem Solving: Use Java, Kotlin, and Python as tools to solve ambiguous, high-stakes requirements where reliability is a matter of global security. What you'll bring High Ownership ...

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 ...

Machine Learning, including agent-based AI, RAG (Retrieval Augmented Generation), multi-agent systems and conversational agents. Strong programming skills in Python, Java or .NET. Experience with GenAI and LLMs (e.g. ChatGPT, Claude, Llama, OpenAI), including prompt engineering, fine tuning and advanced search. Familiarity with AI agent frameworks (e.g. Autogen ...

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 ...

Back End Java Developer with experience within the iGaming and Gambling sector looking for a new and exciting challenge? BENEFITS : up to £95k depending on experience, fully remote, excellent benefits package You will be joining a rapidly expanding company within the iGaming sector, who are committed to providing top-tier … brands within our market, blending sports betting and online casino entertainment on a cutting-edge, custom-built platform. You will be a skilled Senior Java Backend Developer who is a self-motivated professional with a strong track record and a passion for excellence. You'll play a key role ...

Vitality Offices. Full time hours. We are happy to discuss flexible working! Top 3 skills required: To be fully proficient in Java Familiarity with DevOps tools To be able to identify key areas of improvement within Vitality's processes and standards What this role is all about: Software Engineers … thrive? Demonstrable expertise with 5+ years of experience in the use of appropriate tools/technologies for the design, development, build, testing & deployment of Java/JEE applications. Understanding of Agile Methodologies Demonstrated expertise with Spring Boot Demonstrable experience in integrating disparate applications and technologies using Java Experience with ...

Collaborate closely with engineering and data teams to deliver high-quality outcomes Requirements 2+ years backend engineering commercial experience 1+ year commercial experience with Java and Spring Boot Experience building and maintaining RESTful APIs Familiarity with microservices and distributed systems Solid understanding of SQL databases , backend architecture, and release processes ...

Java Developer | Backend | Microservices | FinTech | London | Hybrid | £90k 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 currency … 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 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 ...

months contract/Hyrbid/2 days in office London/750 per day Inside Ir 35 Senior Java Developer (VP) Role Overview We are seeking a Senior Java Developer with deep Electronic Trading expertise to join our E-Fixed Income (eFI) Development Team in London. The team builds … TransFICC connectivity within the eFI ecosystem Identify and eliminate performance bottlenecks through profiling, tuning, and architectural improvements Develop lock-free, allocation-free, performance-critical Java components Deliver high-quality software using Test-Driven Development and Domain-Driven Design Partner with Traders, Financial Engineers, and Business Analysts to translate trading requirements ...

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 ...

well as very competitive salaries, our client offers an excellent working environment. Skills required: Proficient in several of the following: Python, C#, C++, Java Mathematical Modelling Mathematical skills, particularly a keen understanding of probabilities and statistics Analytic mindset Strong communication skills Accuracy and attention to detail Experience in data science ...

well as very competitive salaries, our client offers an excellent working environment. Skills required: Proficient in several of the following: Python, C#, C++, Java Mathematical Modelling Mathematical skills, particularly a keen understanding of probabilities and statistics Analytic mindset Strong communication skills Accuracy and attention to detail Experience in data science ...

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 ...