2,126 to 2,150 of 2,279 Java Jobs in London

from design through release readiness. This role goes beyond test execution by shaping quality strategy, improving engineering feedback loops, scaling robust automation frameworks using Java and Selenium, and applying AI to accelerate test design, risk analysis, and defect triage with appropriate human oversight. The manager partners closely with Product, Engineering … risk-based coverage, traceability, and audit-ready evidence across functional and non-functional validation. Establish and scale an automation-first model by evolving robust Java and Selenium frameworks, automating high-value scenarios earlier in the delivery cycle, expanding regression coverage, and reducing reliance on repetitive manual execution. Apply AI-enabled ...

markets. The position is for a hands mid level or senior Ruby Developer to build new and maintain existing Rails applications communicating with a Java API. The current team has 5 bleeding edge ruby and frontend developers who need some help to keep them from evangelising the world off. … brand new web platform in RubySome Code reviewsThe project will be stabilising the development of their web based platform which is built on Java and AWS EC2 and Ruby. This project will involve getting to know the platform and then adding greenfield functionality as well as brining the platform together. ...

commercial experience §Experience of Application support or Implementation§A technical, mathematic or scientific degree§SQL §Ideally Ability to read OO code§Ideally C++, C#, Java or XML§Windows ServerThis role suits a consultant with strong analytical and problem solving skills, experience with Window Server technologies, SQL, C programming languages, Java ...

Markets is seeking a Senior Low Latency Java Developer to join our Quantitative Strategies team within Pricing & Risk, working on our high-performance, high-frequency trading platform. This is a hands-on role at the core of our market-making technology stack, where nanoseconds matter and engineering excellence is critical. … within our London office (near Liverpool street) 5 days on site per week. The Role Ultra-Low Latency Engineering Develop and optimise high-performance Java (21+) systems for pricing, risk and trading. Build and enhance components within a low latency, high-throughput trading architecture. Apply advanced concurrency, memory management ...

accessible for all candidates and encourage any candidates to tell us about any adjustment requirements. Requirements Excellent communication skills In depth understanding of core Java API's (collections, concurrency, NIO) Understand and have experience with multithreaded systems, working knowledge of the Java garbage collector, familiar with low latency I/ ...

requirements, developing code, writing unit tests, reviewing patches, performing 2nd level support)What we are looking for: Excellent communication skillsIn depth understanding of core Java API's (collections, concurrency, NIO)Understand and have experience with multithreaded systems, working knowledge of the Java garbage collector, familiar with low latency I/ ...

high volume space. Currently the development team stands at 8 people with a project manager and business analyst. The tech stack is Angular. JS, Java, J2EE, Linux, JSP, Maven, Hibernate, JavaScript, JQuery and SQL.As a QA Engineer, you will be responsible for the development of testing frameworks, working closely with … client is based in Central LondonTester, QA, Automation, Selenium, , Javascript, Angular. JS, Node. JS, Fintech Development Manager, Leader, Team Lead, SQL Maven, Hibernate, Subversion. Java Technical Architect ...

agents and agent risks Drive the technical direction of the product, platform, and engineering practices Requirements Fluent coding ability in at least one of Java, Python, TypeScript, or Rust Ability to navigate unfamiliar codebases Led delivery of several significant production-grade software projects, including greenfield and existing software estate work … Proficient in leading software projects and implementing best practices in secure software development and operational efficiency. Highest-signal resume keywords Fluent Coding Ability In Java Fluent Coding Ability In Python Fluent Coding Ability In TypeScript Fluent Coding Ability In Rust Experience With Infrastructure As Code Hard Skills Service Reliability Observability ...

global consulting firm in London is seeking an experienced eFX Java Developer to design and maintain low-latency applications for electronic FX trading systems. Ideal candidates have a strong background in Core Java, multithreading, and real-time market connectivity, with experience in trading environments essential. This position focuses on optimizing ...

roleStrong analytical skills including experience with debugging complex systemsExcellent communication skills in EnglishNetwork engineering and project delivery experienceExtensive experience with Apache KafkaProgramming skills in JAVA and PythonCloud computing experience-AWSExperience with Docker ContainerizationKnowledge of Git VCSShell and Linux administration knowledgeThe environment is that of Facebook or Google, relaxed open with … possibility of making serious money doing something you are passionate about. My client is based in Central LondonJava, EC2, DevOps, Linux, AWS, Java, CLoudwatch ...

evaluation frameworks, and deployment at scale. Strong programming skills with proficiency in Python and ideally experience with one or more additional languages (e.g., TypeScript, Java). Demonstrated ability to operate autonomously, work under ambiguity, and collaborate across organizations. Strong communication skills for discovery and explaining technical concepts to diverse stakeholders. … time; some roles may require more office time. Visa sponsorship is available in some cases. Claude (Anthropic models) LLMs Python TypeScript Java MCP servers sub-agents agent skills Skills Customer‐facing engineering Cross‐functional collaboration Communication Problem solving Autonomy and high agency Client engagement and relationship building Production software delivery ...

making serious money doing something you are passionate about. This role will be working with a large distributed system (Built in Python and Java) automating a large volume of realtime data into a portfolio management system. I am looking for a proficient developer with good tata knowledge and an understanding … based in Central London but does not require office work unless a core meeting is called. Distributed Systems , Python, Data Science, DevOps, Linux, AWS, Java, CLoudwatch ...

designed to deliver highly diversifying absolute returns for institutional portfolios. About the Role We are looking for a talented and hands‐on Java developer with experience in financial trading and execution systems, ideally within the equities space, to join the Helix Technology team. Responsibilities Manage and deliver the roadmap … Provide ongoing maintenance and support for the Helix trading system. Participate in the production support rota following appropriate training. Qualifications Strong development experience in Java (Python experience is a plus). Minimum 5 years of relevant software development experience. Prior exposure to execution systems within a bank, hedge fund ...

Atrium Workforce Solutions Ltd is seeking a VP Full Stack Engineer to work onsite in London, focusing on Solidity smart contracts, Angular frontend, and Java backend. The role emphasizes front-end leadership with substantial Solidity/Java work across a shared codebase. The contract is 12 months initially, inside IR35 ...

understanding of settlement models and post-trade infrastructure Operate within relevant compliance frameworks (e.g. data and securities regulation) Engineering & Delivery Write production-quality code (Java, JavaScript, Solidity, SQL) Review code and help set engineering best practice Improve CI/CD pipelines, testing strategy, and observability Communication & Influence Explain complex technical …/or blockchain platforms Familiarity with tokenisation and digital asset concepts Strong API design skills (REST, event-driven architecture, etc.) Working knowledge of Java, JavaScript, Solidity, and SQL Financial Services Knowledge Understanding of post-trade processes Familiarity with securities depositories, DvP/RvP models, and atomic settlement An appreciation ...

cost-efficient distributed systems tailored to meet performance and operational goals. Code Quality: Experience programming with at least one modern language such as Java, C++, or C# including object-oriented design Agile Collaboration: Actively participate in agile development processes to deliver high-impact features in a fast-paced environment. Quality … 3+ years of professional software development experience, with a strong foundation in building and maintaining distributed systems. Proficiency in modern programming languages such as Java, C++, or Python. Education: Bachelor’s degree in Computer Science, Software Engineering, or a related field. Advanced degrees are a plus. Technical Expertise: Proven experience ...

variants across the codebase and infrastructure, and take what you learn back to the teams that own the code. Klarna's stack runs Java and Node.js services on AWS in a microservice architecture, with third-party integrations added constantly - you'll need to keep pace with … tests and technical security assessments against production systems, not just lab environments. You can read code and find real vulnerabilities in it, particularly in Java and Node.js. You are comfortable operating in AWS and reviewing microservice architectures for security gaps. You write up what you find so developers ...

Harrington Starr in London seeks a hands-on Java Developer to build high-performance electronic trading systems. You will work with traders and quants to deliver low-latency components, market-data gateways, and algorithmic execution frameworks. The role focuses on Java/JVM performance, FIX connectivity, Linux systems, and scalable ...

high-quality, real-time systems used for trading algo orders and liquidity seeking. What will you do? Design and build high-quality Java engines for trading algo orders and liquidity seekingDevelop algorithmic trading engines, associated strategies and supporting desktop toolingContribute to algo strategy design as well as the build … real-time trading enginesBuild real-time trading desktops using technologies including ReactDevelop data analytics, storage and processing capabilitiesWho are we looking for? A strong Java engineer who writes performant, well-designed real-time server codeSolid understanding of Equity market trading in EuropeGood problem-solving skills with close attention to detailA ...

design Understand settlement models and post-trade infrastructure Work within business frameworks such as CSDR and GDPR. Engineering & Implementation: Contribute production-quality code in Java, JavaScript, Solidity, SQL Review code and guide best practices Improve CI/CD, testing strategies, and observability Communication & Influence Communicate complex technical concepts clearly …/or blockchain platforms Familiarity with tokenisation and digital asset concepts Strong API design experience (REST, event-driven architectures, etc.) Working knowledge of: Java; JavaScript; Solidity; SQL Financial Services Knowledge (or strong motivation to learn): Understanding of post-trade processes Familiarity with: CSDR; Central securities depositories; DvP and RvP models ...

FoundationDB in production across multiple regions and control planes (bare-metal, AWS, and Kubernetes). We develop much of our own automation in Java and Go, including our open source Kubernetes Operator (https://github.com/FoundationDB/fdb-kubernetes-operator). We work closely with our dev partners … public, private, or hybrid cloud environment The ability to design, author, and release code in languages like (but not limited to) Go, Java or Python Acute drive to automate manual operations and to improve them through repeated iteration Understanding of the Linux Operating System, standard networking protocols, and components Hands ...

Comfort with large scale production systems and technologies - for example, load balancing, monitoring, distributed systems, or configuration management Proficiency with programming languages such as Java, Python, Bash, JavaScript, Go or similar languages and be comfortable coding and/or utilizing tooling built in these languages Ability to work with … preferred in fields such as Computer Science, Mathematics, Software Engineering, Physics, and Data Science. Strong coder with shown proficiency in programming languages such as Java, Go, Python, JavaScript, or similar languages. Active UK Security clearance, or eligibility and willingness to obtain a UK Security clearance. Life at Palantir We want ...

technology consulting firm is seeking a Principal Java Engineer to join their team in London. The ideal candidate will have over 10 years of experience in Java development, particularly with low-latency systems in payments processing. Responsibilities include designing backend systems, building RESTful APIs, and collaborating across teams to ensure ...

across teamsComfort with large scale production systems and technologies - for example, load balancing, monitoring, distributed systems, or configuration managementProficiency with programming languages such as Java, Python, Bash, JavaScript, Go or similar languages and be comfortable coding and/or utilising tooling built in these languagesAbility to work with a high … background, preferred in fields such as Computer Science, Mathematics, Software Engineering, Physics, and Data ScienceStrong coder with shown proficiency in programming languages such as Java, Go, Python, JavaScript, or similar languagesActive or eligible for DV UK security clearanceAbility to be physically located in our facility (or 15-minutes away) during ...

believe strong engineers can learn and adapt across tech stacks, so our interview and pair programming evaluations are language-agnostic (focused on Python or Java), allowing you to solve complex technical problems in the environment you are most comfortable with. What will you be working on?:Building, scaling, and maintaining … working across model training, evaluation, and deployment (utilizing frameworks around Machine Learning, AI, Neural Networks, or NLP).Programming Skills: Strong proficiency in Python or Java for data scripting and production engineering, alongside advanced SQL capability. Data Fundamentals: Solid hands-on experience building static data pipelines, conducting deep-dive data analysis ...