Software Engineer Python Java Data Jobs in London, UK

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Senior Java Engineer for Customer Services

Starling Bank is looking for a highly motivated engineer to join our Customer Service Engineering Group. This role plays a key part in building robust, scalable code while collaborating across teams. Candidates should have at least 5 years of experience with Java, and familiarity with AWS and Postgres is preferr ...

Cloud Native Backend Engineer (Java/Kotlin)

A global finance leader is seeking a Back-End Engineer in Greater London to design cutting-edge cloud-native microservice architecture applications. Successful candidates will deliver robust technical solutions using Java and Kotlin while collaborating in a dynamic, agile team. Applicants should have experience ...

Senior Backend Engineer, Contacts Platform (Java)

A global technology company is looking for a dedicated backend engineer to join their team in London. You will drive the technical vision for the backend solution powering the recipient management product, collaborating with an agile team focused on delivering top-notch customer experiences. The ideal candidate ...

Senior Lead Java Engineer – SwapClear Interfaces

A leading global financial markets infrastructure provider is seeking a talented Senior Lead Java Engineer in London. This role involves leading the design and development of critical Java applications in an Agile environment. The ideal candidate should have extensive experience with Java 17+, Spring frameworks, ...

Principal Java Engineer: Remote Lead Architecture

A technology consultancy firm in Greater London is seeking a Principal Engineer specializing in Java. You will drive innovation, lead technical teams and contribute to cutting-edge solutions. Candidates should exhibit technical leadership, software architecture, strong project management skills, and a collaborat ...

Senior Java Microservices Engineer (Blockchain) – London

A financial services client is seeking a Senior Back-End Developer skilled in Java Microservices to work primarily onsite in London. You will design and maintain critical back-end components in a microservices architecture, collaborating with teams to deliver high-performance applications. This role requires exp ...

End to End Java Cloud Engineer

Technologies Backend: Distributed, event-driven core Java (90% of the code-base), MySQL, Kafka Frontend: Javascript, Vue.js Deployment: Kubernetes, Nomad Data Analytics: Python & Jupyter notebooks, Parquet, Docker Testing: ...

Low Latency eFX Java Algo Engineer

A 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 ess ...

Lead Java Engineer – FinTech Platform Innovator

JPMorgan Chase & Co. is looking for a Lead Software Engineer in Post Trade Technology to enhance and deliver secure, scalable solutions. You will drive technology solutions to support business objectives while fostering a culture of innovation and inclusion. Key responsibilities include software development, tro ...

Senior Java/Kotlin Engineer Cloud & APIs

A leading health and wellness company in Greater London is seeking a Senior Software Engineer to join their Forecasting & Replenishment team. You'll collaborate with frontend and backend engineers to shape and deliver roadmaps in a high-agility environment. The ideal candidate has strong experience in Java or Ko ...

Senior Java Engineer Hybrid Cloud & AI

A leading technology company in Greater London is seeking a Senior Java Developer to support Public Sector and Defence clients. The role involves designing and building high-quality applications using Java and JEE technologies. Ideal candidates will have experience with modern frameworks like Spring and be famil ...

Senior Trading System Engineer (Java) London

The Role: We are looking for a senior engineer to lead the design and development of algorithmic trading and smart order routing systems. You will work on low-latency, high-throughput platforms, collaborating closely with traders and product teams to enhance execution strategies and o ...

Lead Java Engineer (VP) PACE Platform

About this role PACE (Private Asset Calculation Engine) is BlackRock's strategic analytics engine powering alternative investments performance and risk analytics across eFront tools. Built on a Java/Spring Boot microservices architecture with gRPC communication, PACE processes billions in fund per ...

Low Latency Java Engineer Investment Bank

Low Latency Java Engineer - Investment Bank We have partnered with an Investment Bank in supporting them in their search for experienced Low Latency Java Developers to join their critical Front Office Algo and eTrading projects across a variety of different asset classes. What you'll be ...

Java Engineer – Buyside FX Trading Systems

This is not a bank. Not a consultancy. Not sell‑side tech. We’re hiring a Java Engineer to join a small, elite engineering team inside a buyside FX trading firm building proprietary systems that directly trade capital. Your code won’t feed dashboards or client portals — it will sit at ...

Java Engineer – Buyside FX Trading Systems

This is not a bank. Not a consultancy. Not sell‑side tech. We’re hiring a Java Engineer to join a small, elite engineering team inside a buyside FX trading firm building proprietary systems that directly trade capital. Your code won’t feed dashboards or client portals — it will sit at the h ...

Senior Java Engineer – Customer Services (Hybrid)

Starling Bank Limited is seeking a highly motivated engineer to join their Customer Service Engineering Group. This individual should possess over 5 years of experience in Java programming and have a strong understanding of scalable code delivery. Engaging in a hybrid working model, the role involves developing ...

Platform Engineer – Active SC, Oracle, Java

Platform Engineer – Active SC, Oracle, JavaUp to £550 per day – Inside IR35Hybrid6 monthsMy client is an instantly recognisable consultancy who urgently require a Platform Engineer with Active SC Clearance for an end client within the public sector.Key Requirements:Provenmercial experience working as a Platf ...

Platform Engineer – Active SC, Oracle, Java

Platform Engineer – Active SC, Oracle, JavaUp to £550 per day – Inside IR35Hybrid6 monthsMy client is an instantly recognisable consultancy who urgently require a Platform Engineer with Active SC Clearance for an end client within the public sector.Key Requirements:Provenmercial experience working as a Platf ...

Senior Trading System Engineer (Java) London

The Role: We are looking for a senior engineer to lead the design and development of algorithmic trading and smart order routing systems. You will work on low-latency, high-throughput platforms, collaborating closely with traders and product teams to enhance execution strategies and o ...

GCP Data Engineer

GCP Data Engineer Job Summary: We are seeking a highly motivated and experienced GCP Data Engineer to join our growing team. The ideal candidate will be responsible for designing, developing, and maintaining scalable and robust data pipelines and ar ...

Senior SDET (Java)

Who we are:For over 20 years, Global Relay has set the standard in enterprise information archiving with industry-leading cloud archiving, surveillance, eDiscovery, and analytics solutions. We securely capture and preserve the communications data of the world’s most highly regulated firms ...

GCP Data Engineer

GCP Data Engineer Job Summary: We are seeking a highly motivated and experienced GCP Data Engineer to join our growing team. The ideal candidate will be responsible for designing, developing, and maintaining scalable and robust data pipelines and ar ...

Principal Software Engineer, Personalisation & ML Systems

A leading UK retailer is seeking a Principal Engineer to lead technical strategy within the Personalisation product group. This role involves designing scalable systems for personalisation, recommendations, and machine learning features. The ideal candidate has a strong background in Java or Python, experience w ...

Cloud Site Reliability Engineer — Global Infra & Automation

A leading technology company in London is seeking a Cloud Site Reliability Engineer to enhance and manage global infrastructure systems. Candidates should have experience with Unix/Linux, cloud platforms like AWS or Google Cloud, and proficiency in languages such as Java and Python. The role emphasizes collabora ...

Senior Java Developer

Senior Java Developer – Middle Office Transformation in Asset Management Location: Hybrid, London. Salary based on skills and experience. The role involves working with large data warehouses in a financial services environment. Pay Range Base pay range: to be discussed. <h3 ...

Lead AI/ML Platform Engineer

A global financial services leader seeks a Lead Software Engineer to enhance AI/ML data platforms. You will develop software applications and mentor junior engineers, driving innovation in a diverse team. The role requires strong full stack development and Python skills, along with experience in Infrastructure a ...

Senior SDET: Python & AWS Platform Quality Engineer

A leading technology firm in England seeks an experienced Software Development Engineer in Test (SDET). You will be responsible for designing and building high-performance tools to validate ML data pipelines and developing automation frameworks. The ideal candidate will have over 8 years of experience in softwar ...

Backend Engineer Search & Crawler Systems (Scale & Data)

A technology company is seeking an experienced Backend Software Engineer for their Crawler team in Berlin. The role involves designing and managing systems for processing web-scale data, with responsibilities focusing on large-scale web crawlers. The ideal candidate will have at least 5 years of software develop ...

Data Engineer

We’re looking for a Senior Data Engineer to join a high-performance trading firm operating at the forefront of the digital assets space. This is a hands-on role within a global data engineering team, with the opportunity to shape how data is handled across the business. You'll design and build scalable ...

Data Application Engineer

Key Responsibilities Develop and continuously iterate the data platform Build and maintain data pipelines for user behavior data processing based on Flink, ensuring the completeness, accuracy, and stability of tracking data. Design and maintain the user tagging system, ...

Senior Software Engineer II

High impact domains you might join Fund Operations: Building the core engine that powers our vision of an operating system for private capital, simplifying complex accounting workflows. Investor Reporting: Developing features that enable investment firms and audit ...

Lead Python Developer Fintech

Lead Python Developer / Software Engineer London / WFH to £120kAre you a skilled Python Developer with team leadership experience?You could be progressing your career at a well-funded and profitable FinTech start-up.As a Lead Python Developer you'll head up a small, talented tech t ...

Lead Python Developer Fintech

Lead Python Developer / Software Engineer London / WFH to £120kAre you a skilled Python Developer with team leadership experience?You could be progressing your career at a well-funded and profitable FinTech start-up.As a Lead Python Developer you'll head up a small, talented tech t ...

Principal Technical Consultant Automation

Role: Principal Technical Consultant Make sure to read the full description below, and please apply immediately if you are confident you meet all the requirements. Employment Type: Permanent Location: London - Hybrid working model Ten10 is one of the leading independent Quality ...

AI Engineer.

AI EngineerWe are working on different areas where AI/ML can help portfolio managers, researchers, risk managers, and other functions. Some examples are: enabling traders/researchers to consume vast amounts of research and literature by organizing, summarizing information, sometimes in near real-time; doing q ...

AI Engineer.

AI EngineerWe are working on different areas where AI/ML can help portfolio managers, researchers, risk managers, and other functions. Some examples are: enabling traders/researchers to consume vast amounts of research and literature by organizing, summarizing information, sometimes in near real-time; doing q ...

Devops Engineer

1 day ago Be among the first 25 applicants Get AI-powered advice on this job and more exclusive features. This range is provided by Pioneer Search. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range Direct message ...

Site Reliability Engineer with Python (IT) in London Nexus Jobs Limited

Job Description Our client is looking to bring on a Site Reliability Engineer to help deploy, manage, troubleshoot, and enhance our complex cloud-based set of internal tools and externally managed services for a variety of users across our wide-ranging organization. Requirements Deep k ...

Lead Data Engineer — AWS, Spark & Lakehouse

A leading global financial markets organization is looking for a Lead Software Data Engineer to join their team in London. The role involves designing scalable data pipelines and working in a collaborative environment focused on innovation. Candidates should have strong Python skills and familiarity with AWS too ...

Application Security Engineer: Threat Modeling & Secure Architecture

A leading global e-commerce company is seeking an experienced Application Security Engineer in Greater London. You’ll conduct application security reviews, design secure architecture, and ensure security across various services. A Bachelor's degree in Computer Science and programming experience in Java, C++, or ...

Principal Engineer – Personalisation & ML Systems

A leading UK retailer is seeking a Principal Engineer to shape their technical direction and lead engineering excellence. The role involves driving strategy, designing scalable systems for personalisation, and mentoring engineers. Ideal candidates will have strong experience in Java or Python, machine learning, ...

Senior Fullstack Engineer — Global Commerce Platform (Remote)

A leading audio streaming service is looking for a Senior Fullstack Engineer to enhance its payment infrastructure. The role involves architecting and implementing backend services using Java and Python to ensure payment processing across their platform. The ideal candidate is experienced in modern JavaScript, c ...

App Sec Engineer Cloud & Threat Modeling

A leading e-commerce firm in Greater London is seeking an experienced Application Security Engineer to enhance its security team. The role involves conducting application security reviews, designing secure architectures, and providing security training to development teams. The ideal candidate is knowledgeable i ...

Senior ML Engineer, Personalization Work from Anywhere

A leading technology company in Greater London is looking for a Machine Learning Engineer specializing in Personalization. You will build and scale systems that power recommendations for millions of users. The role requires mid to senior level experience in production ML systems and strong skills in Python, Java ...

QA Automation Engineer for Trading Platforms

A leading workforce solutions company in the UK is looking for a QA Automation Engineer to ensure high reliability in trading systems. Responsibilities include building test frameworks, executing tests, and collaborating with developers. The ideal candidate should have experience with Java or Python testing fram ...

Impactful Full Stack Engineer for Trading Platform

A growing investment bank in Greater London is looking for a Full-Stack Engineer to develop trading system components and maintain production systems. Ideal candidates should possess a Bachelor's degree in a relevant field and have practical experience in Java, Kotlin, or Python. This role offers the chance to m ...

Backend Engineer Core Infrastructure

As a Backend Engineer on Spotify's Core Infrastructure team, you'll build and maintain the platform foundations that power Spotify for 600M+ users globally. You'll work on reliability, scalability, and developer tooling—ensuring engineering teams can ship features rapidly and safely. Skills Requir ...

Remote QA Automation Engineer for Fabric Load Testing

A technology company is seeking a skilled QA Automation Engineer primarily working remotely with occasional workshops in London. This role involves designing, building, and executing Selenium-based load testing scripts for PowerBI Fabric. Candidates should have strong experience with Selenium, knowledge of autom ...

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    Software Engineer Python Java Data Jobs in London Job Search Guide, Trends and Insights