201 to 225 of 269 Java Jobs in London

Skills Experience: Solution Architecture with a clear focus on E-commerce platforms or API/Middleware ecosystems. Technical Stack: Expert-level knowledge of Node.js, Java (Spring Boot), and PostgreSQL - able to read and critique vendor code, not just high-level diagrams. Integration Expert: Deep proficiency in API management patterns, Webhook ...

channels. Integrate quantitative models and new market data feeds into the pricing platform. Produce detailed technical designs aligned to solution architecture. Implement high‐quality Java server‐side components, applying industry‐standard development patterns. Build simulation and back‐testing environments; investigate regression issues where required. Conduct automated unit, integration, and performance … cyber vulnerabilities, contributing to strong risk and control governance. Participate in intraday or overnight support rota when required. Required Technical Skills Strong server‐side Java development experience, including multithreading. Experience building global, distributed systems in a real‐time trading environment (24x5.5). Proven experience developing Rates or FX pricing systems ...

platform for the LGBTQ+ business community. Please do not contact the recruiter directly. Accepting applications until: 31 July 2026 Job Description Job title: Junior Java Developer - DAX Exchange Are you an early-career engineer who wants to build high-performance systems that power digital advertising at scale? As a Junior … Java Developer - DAX Exchange at Global, you'll join a small, focused team building performance-critical services in modern Java. You'll work on the matching engine that connects advertisers with outdoor screens and, over time, live radio and on-demand audio. You'll contribute to production code from ...

annum ***CANDIDATES MUST BE UK NATIONALS AND ELIGIBLE FOR SC CLEARANCE*** Role Overview We are seeking an experienced Application Developer with strong expertise in Java and Web Technologies to design, develop, and support enterprise-grade applications. The role involves working across the full software development lifecycle, building scalable solutions using … Java/JEE stack, and contributing to modern, secure, and high-performing systems. You will play a key role in developing clean, reusable code, supporting live services, and mentoring junior team members while following modern engineering standards and DevOps practices. Key Responsibilities Application Development & Engineering Design, develop, and maintain applications ...

Senior Software Engineer (Rust, C++, Java, Go or Python) Software Engineering Up to £150k base + meaningful equity London Senior Software Engineer – Rust, C++, Java or Python – London – Up To £150k base + meaningful equity Are you excited by solving technically challenging problems and building mission‐critical software … engineering excellence, working closely with colleagues across AI/ML, networking, and robotics. What we’re looking for: Strong programming skills in C++, Java, Rust, or Python. A strong computer science, engineering, or technical background (degree or equivalent experience). Enthusiasm for working across a diverse tech stack and solving ...

Solution Architect (Java, Spring Boot, Microservices) Location: Wembley, On-site Salary: Up to £85,000 + benefits 1 stage interview (ASAP) We're looking for an experienced Solution Architect to join a high-performing technology team delivering complex, enterprise-scale platforms. This role is ideal for someone who thrives … Experience: 5+ years in Solution Architecture Strong background in e-commerce platforms or API/middleware environments Technical Expertise: Strong knowledge of Node.js, Java (Spring Boot), and PostgreSQL Ability to review and critique code as well as architectural designs Integration & Architecture: Strong experience with API-led architecture, webhooks, and event ...

Senior Software Engineer with Python and Java Our Client is looking to recruit brilliant Software Engineer with upwards of 5 to 10 years solid proven track record of developing complex applications with Python coupled with Machine Learning and ideally Go. We’re looking to recruit initially 2 excellent Software Engineers … very interested to see your profile. Must be 100% trustworthy with real integrity – this is a highly sensitive project. Key skills: Python, Machine Learning, Java The Client would like to see solid expertise of working with and developing complex applications with Java. Excellence is vital. Ideally have security clearance. ...

client is in the Insurance sector and is looking to grow their team with a Java Solution Architect. This is a hybrid role with 1-2 days a week in London. Client Details Our client is in the Insurance sector and is looking to grow their team with a Java … Solution Architect. This is a hybrid role with 1-2 days a week in London. Description Design and develop scalable and efficient Java-based solutions to address complex business challenges. Collaborate with cross-functional teams to understand technical requirements and translate them into practical solutions. Provide architectural guidance and ensure ...

Java Electronic Trading Engineer – Front office London – Hybrid Java, Low Latency, FIX, SBE, Aeron, Linux, Docker, Kubernetes, AWS The company This is an unmissable opportunity for an experienced Java Electronic Trading Engineer to join one of the leading institutional digital asset firms in the market. With a global footprint … digital assets. What you will do Build the next generation of low-latency crypto trading systems from the ground up. Develop core server-side Java components across order management, market connectivity, low latency messaging and price distribution. Work deep in the stack — performance profiling, optimisation and tuning under live trading ...

subject matter expertise on the .Net stack and contributing to technical design discussions. You'll use a range of technology including Apache Flink with Java for large scale data processing and will be able to assess and recommend new and emerging technologies, using the best tool for the job. Location … understanding of CI/CD and Infrastructure as Code (Terraform) You have cloud experience with AWS You're familiar with other languages such as Java and are open to learn new things You're comfortable with using agentic AI and tools to help improve productivity You're collaborative with great ...

Insurance, Regular social events What You ll Work On The environment is primarily Node.js and Go but strong engineers from .NET/C# or Java backgrounds are encouraged to apply. Integrating with payment platforms, banking infrastructure, FX/crypto providers, and card processors Designing and optimising SQL and NoSQL data … testing through to deployment, monitoring, and production support Experience Required Degree educated Development experience in either Node.js with JavaScript & Typescript, .NET, C# or Java AWS experience preferred (Azure, GCP also welcomed) Strong understanding of relational databases, ideally MySQL Interest in agentic engineering workflows and AI-assisted development Experience designing APIs ...

Insurance, Regular social events What You’ll Work On The environment is primarily Node.js and Go but strong engineers from .NET/C# or Java backgrounds are encouraged to apply. Integrating with payment platforms, banking infrastructure, FX/crypto providers, and card processors Designing and optimising SQL and NoSQL data … testing through to deployment, monitoring, and production support Experience Required Degree educated Development experience in either Node.js with JavaScript & Typescript, .NET, C# or Java AWS experience preferred (Azure, GCP also welcomed) Strong understanding of relational databases, ideally MySQL Interest in agentic engineering workflows and AI-assisted development Experience designing APIs ...

Insurance, Regular social events What You ll Work On The environment is primarily Node.js and Go but strong engineers from .NET/C# or Java backgrounds are encouraged to apply. Integrating with payment platforms, banking infrastructure, FX/crypto providers, and card processors Driving architectural decisions across distributed systems … testing through to deployment, monitoring, and production support Experience Required Degree educated Development experience in either Node.js with JavaScript & Typescript, .NET, C# or Java AWS experience preferred (Azure, GCP also welcomed) Strong understanding of relational databases, ideally MySQL Interest in agentic engineering workflows and AI-assisted development Experience designing APIs ...

Insurance, Regular social events What You’ll Work On The environment is primarily Node.js and Go but strong engineers from .NET/C# or Java backgrounds are encouraged to apply. Integrating with payment platforms, banking infrastructure, FX/crypto providers, and card processors Driving architectural decisions across distributed systems … testing through to deployment, monitoring, and production support Experience Required Degree educated Development experience in either Node.js with JavaScript & Typescript, .NET, C# or Java AWS experience preferred (Azure, GCP also welcomed) Strong understanding of relational databases, ideally MySQL Interest in agentic engineering workflows and AI-assisted development Experience designing APIs ...

data pipelines and services Develop batch and ELT/ETL data workflows for ingesting and processing large datasets Work with technologies such as Python, Java, Spark, SQL, and Airflow Apply good software engineering practices, including testing, documentation, and CI/CD Contribute to cloud‐based systems (AWS), focusing on reliability … working as a data or software engineer on production systems Strong skills in Python and experience with at least one backend language (such as Java) Understanding of data engineering concepts such as data lakes, batch processing, and distributed systems Experience building or operating data pipelines using tools like Spark ...

answered with a simple yes/no: Do you have hands-on experience writing code in one or more programming languages, for example Java, JavaScript or TypeScript? Have you designed, developed or maintained test frameworks or test tooling across multiple test levels? Are you willing and able to complete … criteria listed below. Please provide evidence of your Experience of the following: Writing code in one or more programming languages, for example Java, JavaScript and TypeScript, to build or maintain test frameworks, tools or checks. Designing or implementing automated checks across API, integration, contract or end-to-end test levels. ...

Online Trading Platform FinTech Client are looking for experienced Senior Java Engineers to join a new team to modernise and simplify critical legacy services using the latest AI Tools and Internally Built LLMs.The client can offer up to £120,000 Basic + Bonus (c25-35k) + PensionThis role … done COMPLETELY REMOTELY from the UKWe are looking for: Experienced Java Back-End Software Engineers Multi-threading (GC, Memory, Performance Tuning) ideally in a trading environment Some experience with Service Modernisation, working in a modern API First and Cloud Native Experience, any experience using AI Tools is preferred not mandatory. ...

Online Trading Platform FinTech Client are looking for experienced Senior Java Engineers to join a new team to modernise and simplify critical legacy services using the latest AI Tools and Internally Built LLMs. The client can offer up to £120,000 Basic + Bonus (c25-35k) + Pension This role … done COMPLETELY REMOTELY from the UK We are looking for: Experienced Java Back-End Software Engineers Multi-threading (GC, Memory, Performance Tuning) ideally in a trading environment Some experience with Service Modernisation, working in a modern API First and Cloud Native Experience, any experience using AI Tools is preferred ...

Java Data Engineer 6-Month Contract (Possible Extension) Inside IR35 Hybrid London (3 days) I have been engaged my client to bring in a Java Data engineer to work on a Big Data Project in the finance sector. Required Experience: Java Big Data experience On-premises cluster experience Databases Kubernetes ...

technical designs aligned with broader architectural standards. Work effectively alongside external and internal technical teams as required. Develop high‐quality, low‐latency server‐side Java components using industry‐standard patterns. Apply continuous integration practices and automated testing (unit, integration). Conduct comprehensive testing prior to release into UAT. Assist with … intraday and overnight support rotations when required. Contribute to the evolution of pricing, distribution, and algorithmic trading components. Skills Required Strong server‐side Java experience, including demonstrable multithreaded development skills. Experience building highly available, distributed systems. Proven experience in tuning and developing low‐latency applications. Hands‐on experience with electronic ...

Java Engineer Salary to £ 50 k + Company Options Scheme Hybrid working between your home, their offices (London Vauxhall) & client sites. NB: Please only apply if you have resided in the UK for the past 5 years and are prepared to go through UK SC Security Clearance This company ...

Java Engineer Salary to £50k + Company Options Scheme Fully remote working available for the right candidate (hybrid working between your home, their offices (London Vauxhall) & client sites would be preferred but isnt essential). NB: Please only apply if you have resided in the UK for the past ...

Hopeghospital in Greater London is seeking a Senior Java Developer to design and maintain high-quality Java applications. The role involves collaborating with cross-functional teams to deliver scalable solutions, optimizing performance, and mentoring junior developers. Candidates must have strong proficiency in Java, Spring, Hibernate, and experience with databases ...

Graduate/Junior Developer, Python, Linux, C#, Java - London (Teck stack: Graduate/Junior Developer, Python, Linux, C#, Java, .NET 10.0, C#, J2EE, Agile, TDD, BDD, Graduate/Junior Developer) Since 2006 our client's revolutionary marketing software platform has been helping businesses all over the world to attract, engage … experiences that are relevant, helpful, and personalized. Having recently launched in the UK, they looking to hire Graduate/Junior Developer (Python, Linux, C#, Java)) to become a part of their ever-growing family. They believe that individual developers are in the best position to make decisions about what should ...

Java Software Engineer - Systematic Trading London | £120,000-£160,000 + bonus Java, Trading Execution, Python The Role This is a hands‐on Java engineering role sitting close to the trading desk, focused on the evolution of a proprietary execution platform used in live markets. The work is visible, commercially … platform design, including scalability and system architecture decisions Supporting production systems, including involvement in a rota once up to speed What You Bring Strong Java engineering background, with solid experience building high‐performance systems Exposure to electronic trading environments, ideally with a focus on execution Understanding of any cash markets ...