1 to 25 of 94 Permanent Java Jobs in Central London

Senior Java Engineer – Low Latency Trading London/New York (Hybrid) Skills: Java, Java 23, Low Latency, Trading Platforms, Market Data, Aeron, Kafka, Chronicle, FIX Artemis Talent is partnering with a leading trading technology firm building high-performance, real-time trading systems used across global markets. This is not standard … sensitive infrastructure across order management, execution, and market data where performance and reliability are critical. The Role Design and build low-latency, high-throughput Java systems Optimise performance across latency, concurrency, and memory Contribute to mission-critical trading platforms (OMS/EMS, market data) Work closely with engineering and business ...

SDLC to rapidly comprehend large codebases, generate production‐quality code, and accelerate delivery. Required Qualifications 8+ years of professional software development experience in Java (Java 17+ preferred), with strong command of concurrency, collections, and modern language features. Demonstrated experience with AI assisted engineering tools (e.g., Claude Code, GitHub Copilot Agent ...

principal-level roles Expertise in JavaScript/TypeScript and modern frontend frameworks (e.g., React, Angular, or Vue) Strong backend development experience (e.g., Node.js, Java, Python, or Go) Proven experience designing and building scalable, distributed systems Strong experience with REST APIs, microservices architecture, and event-driven systems Cloud experience with Azure ...

agile environments Desirable Experience Docker, Docker Compose Terraform or other IaC tools EF Core, relational DB experience NoSQL (MongoDB, Cosmos DB) Microservices in Java/JS/TS Experience with LLM/AI integration frameworks (e.g., LangChain) Familiarity with modern design systems Additional Information A flexible benefits package is available ...

stakeholder engagement skills Desirable: Experience with configuration management tools (Ansible, Puppet, Chef, Packer) Exposure to testing tools (Selenium, Cucumber) Experience supporting modern application stacks (Java, Node.js, SQL/NoSQL ...

pipelines, orchestration) Strong experience designing and delivering cloud‐native systems, including APIs, microservices, containers, and serverless or event‐driven architectures Proficiency in Python, Java, or comparable backend languages Hands‐on experience with CI/CD pipelines, infrastructure as code, and monitoring or observability tools Proven ability to deliver production‐quality ...

Senior Java Developer London/Hybrid Capital Markets Technology A growing capital markets technology business is looking to hire a Senior Java Developer to play a key role in building and evolving a cloud-native post-trade platform used across client reporting, APIs, workflow management, and trading operations. This … Engineering teams to design and deliver scalable backend systems supporting post-trade workflows, reporting, integrations, and client-facing tooling. The environment combines modern Java engineering with capital markets domain exposure, including clearing, OTC derivatives, collateral, and prime brokerage workflows. Responsibilities Design, develop, and maintain backend systems, APIs, reporting platforms ...

depending on experience, plus bonus & benefits Clearance Eligibility for SC Clearance An experienced Senior Solution Architect with a strong software engineering background (Java/.NET) and eligibility for SC clearance, specialising in the design and delivery of scalable, cloud native solutions using microservices and API-driven architectures. Key Responsibilities ...

Assignments are Inside IR 35, hybrid working. Initially 6-9 months About the role: Experience with C#/.NET Additional languages highly desirable ie Java, Python React/TypeScript RESTful API design Apache Kafka PostgreSQL Git/GitHub workflows Experience with Kubernetes deployments; able to build CI/CD pipelines ...

tools and technologies such as Git, Jenkins, Maven, artifact repositories, and build systems Hands-on experience building software delivery pipelines across multiple ecosystems, including Java, Node.js, and Python A solid understanding of infrastructure and operations , including compute, networking, storage, and security Experience with configuration management and deployment tools such ...

/or multi-cloud set up is essential. Demonstrable basic development or scripting experience in one or more of the following languages: Bash, Python, Java, C#, Rust, Excel VBA Solid Linux/network stack knowledge, as well as optimization/tuning Nice to haves Containerization (Docker/Kubernetes ...

8+ years of industry experience with a solid understanding of engineering, infrastructure and ML best practices. Strong coding skills with Go or JAVA Design and help develop systems that serve recommendations to over 300 million users Drive engineering roadmap creation and execution, specifically around feed ranking and recall oriented candidate ...

degree in computer science, Engineering, or a related field. Minimum 6 years of relevant industry experience Proficiency in programming languages such as Python, Java, or GoLang. Experience with AI and machine learning technologies, particularly in the context of coding assistants. Strong problem‐solving skills and the ability to think critically ...

Required Skills & Experience Strong experience in automation testing using Selenium/Playwright/Cypress Proficiency in programming languages such as Java, Python, or C# Experience with API testing (Postman, REST Assured, or similar) Knowledge of testing frameworks (TestNG, JUnit, Pytest, etc.) Familiarity with CI/CD tools (Jenkins, Azure DevOps ...

skills in Python , Bash, or PowerShell Familiarity with observability tooling and SRE principles SQL and database knowledge (MySQL, Oracle, or similar) Experience supporting .NET, Java, or microservices applications It would be great if you had: ITIL v3/v4 certification or ServiceNow experience Knowledge of Swift payment flows or financial ...

Client: Largest American Credit Card Company Location: Burgess Hill 3 days/week Years of Exp: 6-9 years Skills: Go, Java, Git, REST, Jenkins, NoSQL, Postgres/ql £40-£50/hr Inside IR35 Visa sponsorship is not available. We're looking for an enthusiastic, diligent Golang Software Engineer ...

13+ billion. For more information on how we process your personal data, please refer to HCLTech’ s Candidate Data Privacy Notice. Must Have – Java, Low-latency, financial services background, and hands on coding skills "Our app relies heavily on async development, we use vertex. it takes significant time to switch … have significant intuition with that, and some modern messaging like Aeron or ZeroMQ." DETAILED RESPONSIBILITIES- - Lead the development, testing, and maintenance of low-latency Java applications. - Collaborate with cross-functional teams to gather requirements and design system architecture. - Optimize application performance and troubleshoot latency issues. - Mentor junior developers and ensure ...

Senior Java Developer 11 roles available (mid to senior level) Pay rate: Outside IR35 – £600 to £800/day (depending on experience) Duration: Initial 6–9 months (programme running through to 2027) Working Arrangement: Hybrid – ~2 days/week in London A major Financial Services client on a large-scale … back-office transformation programme, and we’re looking to onboard 11 Java Developers across mid to senior levels. You’ll be working on a platform re-architecture programme, building integration services across trade lifecycle, settlement, and reconciliation workflows. This is a long-term, greenfield initiative with strong technical challenges ...

native workflows end-to-end, and shape how modern software gets delivered. Must haves: • 5+ years building and shipping production systems • Strong Python/Java/TypeScript experience • Hands-on experience with LLMs, agents, or AI workflows • Cloud experience (AWS, GCP, or Azure) • Comfortable in client-facing, cross-functional/ ...

background in data architecture and software engineering Experience across Azure, big data technologies, and modern data platforms Ability to work hands-on when needed (Java, Scala, Python) Expertise in data modelling, integration, and microservices architecture Strong stakeholder engagement and communication skills Why Apply? Work on high-profile, large-scale transformation ...

Oversee vendor relationships and offshore resource planning Contribute to governance, risk and compliance initiatives Skills and Experience Extensive experience in software development with strong Java expertise Proven leadership experience managing engineering teams Experience overseeing the full software delivery lifecycle Background within financial services, ideally capital markets Strong understanding of cloud ...

platforms Knowledge of big data and distributed systems Experience with microservices architecture Ability to be hands-on when required using technologies such as Python, Java, or Scala Strong understanding of both structured and unstructured data design Experience leading teams and engaging with senior stakeholders Excellent communication skills, both written ...

fundamentals Experience working on large, complex or data intensive systems Strong coding ability in Python or a similar language such as Julia, R, MATLAB, Java, C# or C++ Experience with SQL and large datasets Exposure to mathematical, statistical, simulation or algorithmic software would be highly relevant Understanding of testing, documentation ...

pipelines and tools . Experienced with Native modules (C++) , WebSockets, RESTful based APIs . Experience in Swift/Objective-C (iOS) or Kotlin/Java (Android) for low level implementation. Important information for candidates Recruitment scams have become increasingly common. To protect yourself, please keep the following in mind when ...

services and APIs, delivering features end-to-end in collaboration with cross-functional teams. Develop cloud-native and containerised applications using technologies such as Java (Spring Boot), Python (FastAPI), Node.js and modern datastores. Build solutions within an Agile and DevSecOps environment, embedding security and quality throughout the delivery lifecycle. Integrate … teams. Required Skills & Experience DV security clearance is essential. Proven experience as a backend or software engineer delivering production systems. Strong coding ability in Java, Python and/or JavaScript/TypeScript. Solid understanding of backend engineering fundamentals, design patterns and API design. Experience working in Agile teams (e.g. Scrum ...