2,118,358+ Full Stack Java Developer Python Jobs in UK — Top Companies Hiring June 2026

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Front Office Quant Developer — High Performance Trading

A financial technology firm in the UK is looking for a Quantitative Developer to enhance trading applications and develop pricing algorithms. The role requires experience in multi-threaded Java applications and strong programming skills in Python. Candidates should have a bachelor's degree in a technical field a ...

Java Developers (all levels)

Position Description: At CGI, we’re shaping the future of digital UK Government solutions, building secure, high-impact platforms that improve services for millions across the UK. As a Java Developer , you’ll play a pivotal role in designing and developing scalable, resilient back- ...

SDET Python, Pytest, AWS & SQL in London Hays

SDET - Python, Pytest, AWS & SQLLondon, United KingdomPosted about 1 year agoThis is a job posted by our partner JoobleTech stackCJavaAmazon AWSPostgreSQLSQL lambdasEC2</li ...

SDET Intern: Python, Pytest, AWS & SQL

SDET - Python, Pytest, AWS & SQLLondon, United KingdomPosted about 1 year agoThis is a job posted by our partner JoobleTech stackCJavaAmazon AWSPostgreSQLSQL lambdasEC2</li ...

Lead Principal Full Stack Engineer Cloud & Incident Leader

A leading technology consultancy in Leeds is seeking an experienced Principal Full Stack Engineer to lead L2/L3 support teams and ensure high-quality service delivery. The ideal candidate should possess knowledge in Java, Python, Node.js, or C#, alongside hands-on cloud architecture experience with AWS or Azure. ...

Junior Quantitative Researcher – Applied Scientist (London)

Quant Capital is seeking a talented Junior Quantitative Researcher/Developer in London to analyze large-scale real-world data sets. The ideal candidate should have a strong quantitative background, good attention to detail, and significant academic achievement at PhD level. Proficiency in programming languages s ...

Principal Embedded & IaC Developer

WorksHub is looking for a Principal Developer based in Southampton, United Kingdom. This full-time position offers up to £75K and requires strong experience in C/C++, Java, Python, and Rust, alongside a deep understanding of electronics and systems design. Candidates should be proficient in infrastructure as cod ...

Fullstack Python Developer – FastAPI, React & REST APIs

9nexus is looking for a skilled Full Stack Python Developer with strong expertise in Python and FastAPI, along with hands-on experience in React and SQL. You will develop scalable web applications, build high-performance APIs, and work collaboratively across the software development lifecycle. The idea ...

Senior Software Engineer: Python & Java for Data Pipelines

LSEG in the United Kingdom seeks a Python Developer to re-implement and test existing StarMine Quant models and build new models in collaboration with research teams. The ideal candidate has strong knowledge of Python, Java, or Kotlin, and experience in cloud application development. Responsibilities include bui ...

Java Developer – Systematic Hedge Fund (London / Hybrid)

Overview Java Developer – Systematic Hedge Fund (London / Hybrid). Responsibilities Design and write software for Trading Systems, Middle & Back Office, and Corporate Functions. Develop primarily in Java, with exposure to Python and MATLAB. Collaborate in a h ...

Java/Cloud Engineer

You will be working for a leading industrial manufacturer on a Greenfield project!The company is entering an exciting stage of their life cycle as they are leaving behind traditional methods and will start to use cutting edge technologies such as digital dying and 3D printing. The role will be a ...

Senior Java Software Engineer

Overview Quant Capital is urgently looking for a Core Java Developer to join a well known trading firm. No experience of finance is needed; finance isn’t what this firm does, tech is. Our client is an innovative tech-driven trading company (Equities and ETFs) with a pioneering big data techn ...

Python Developers

Position Description: CGI’s Space, Defence and Intelligence business unit focuses on delivering contemporary and innovative technical solutions to government agencies tackling some of the most complex challenges. We design, build, and operate bespoke, mission-critical systems that help ke ...

Senior Full Stack Engineer AI Native Scaleup with Equity

Be-IT in Edinburgh is looking for senior and principal engineers to significantly impact the development of an AI-native platform. You will influence product creation and direction within a fast-scaling enterprise, where AI is central to the culture. The ideal candidates will have strong full stack eng ...

Backend Python Developer — Azure AI (Remote)

A growing consulting business in the UK is seeking a talented Backend Python Developer to contribute to their AI-driven platform project. The ideal candidate will have strong experience in Python backend development and familiarity with cloud-native architectures. This role offers remote flexibility and the chan ...

Mid Level Python Developer Remote First

Overview Mid-Level Python Developer - Remote First. OB have partnered with a FinTech company looking to add 2 x Mid-Level Python Developers to their engineering team. You will have the opportunity to work closely with the CTO & Head of Engineering to influence projects from day one and develop the ...

Mid Level Python Developer Remote First

Overview Oliver Bernard has partnered with a FinTech company to hire 2 x Mid-Level Python Developers to their highly skilled engineering team. You will work closely with the CTO & Head of Engineering to have an impact from day one and develop their systems. Responsibilities De ...

Junior Trade Desk Developer Build Smart Trading Tools

Quant Capital is seeking a Junior Trade Desk Developer in London, United Kingdom. This full-time position offers a competitive compensation of up to £80K and is ideal for candidates with a STEM background from a top-tier university. Applicants should possess strong problem-solving abilities, proficiency in codin ...

Senior Software Engineer Java

Job Description Are you passionate about Java backend development and eager to explore new technologies and innovative ways of working? Join our full stack engineering teams to create delightful features and experiences for our customers. Our tech stack is constantly evolving, leveraging modern f ...

AI Driven Frontline Software Modernization Engineer

A leading enterprise software firm in the United Kingdom seeks an experienced Full-Stack Software Engineer to act as a Forward Deployed Engineer. This role involves embedding with teams to lead modernization efforts, drive AI-assisted SDLC practices, and manage technical changes. The ideal candidate will have ov ...

Python Developer: Power Systems Optimisation & Analytics

Hamilton Barnes is seeking a Python Developer for a 6-month role based in Wokingham. The ideal candidate will have significant expertise in algorithm development, optimization modelling, and power system techno-economic assessments. Responsibilities include developing scalable algorithms, maintaining software ...

Senior Python Developer: FastAPI & Azure Microservices

A leading staffing agency is seeking a Senior Python Developer with a focus on FastAPI for a premier energy client in London. This mid-senior level contract position involves designing and deploying scalable backend services, collaborating with cross-functional teams, and developing high-performance APIs. The ro ...

Senior Python Developer Up to £90k

Support Consultant at Oliver Bernard | Specialising in building High-Performance Python, Data & AI teams across the UK and Europe OB have partnered with a FinTech company, who are looking to bring on a Senior Python Developer to their highly skilled engineering team, where you'll have the opportu ...

Front Office Python Developer – Trading Systems

Front Office Developer - Trading Technology - Python Get AI-powered advice on this job and more exclusive features. This range is provided by Orbis Group. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range <p ...

Python Developer – FinTech SaaS Analytics (Hybrid)

A well-known FinTech Software Company is seeking a Mid-Level Python Developer to design, build, and optimise analytics and data workflows on a greenfield SaaS platform. Collaborating with actuaries and data scientists, you'll enhance Python-based features, improve system integration, and champion engineering bes ...

Senior Backend Engineer (Java/Python) Linux SC Cleared

ALTEN is seeking a Backend Software Engineer based in London. You will design, develop, and support software for complex systems, focusing on reliability and operational requirements. Strong experience with Java and Python is essential, as well as the ability to work in a Linux environment. Join a pass ...

Senior Software Engineer — Java / Python, Build Scalable Systems

A leading financial institution in the United Kingdom is seeking experienced Software Engineers to design and develop scalable technology products. You will work in an agile team, focusing on Java or Python to create high-quality code, maintain algorithms, and analyze large datasets. The ideal candidate has hand ...

Backend Mobile App Developer (Python, Django) in London Rise Technical

Backend Mobile App Developer (Python, Django) London, United Kingdom Tech Stack Frontend Django Framework Frontend Development Python Mobile Backend Candidate Requirements The ideal candidate will have at least 1 year's experie ...

Engine Software Developer Edinburgh in Edinburgh Continuum Industries

Engine Software Developer-Edinburgh Edinburgh, United Kingdom Tech stack SciPy NumPy pandas Responsibilities To gather requirements, understand the problem, and communicate pros and cons of different solutions. Require ...

Python Developer in Belfast Adepta Partners Limited

Python Developer Location: Belfast, United Kingdom Posted 9 months ago Company: Adepta Partners Limited Compensation £100,000 - 100,000 per year Role type Full time Visa sponsorship Not provided Tech Stack < ...

Full Stack Engineer — Microservices & Secure Platforms

Space Executive, a fast-scaling RegTech startup in the United Kingdom, is looking for a Node & React Full Stack Engineer. The role involves ensuring the reliability of microservices architecture and transforming ideas into scalable code. You will also automate CI/CD processes while engaging directly with cust ...

Lead Gen Full Stack Engineer Remote

iamproperty Group in the United Kingdom is seeking a Full Stack Software Engineer to join their Lead Gen team. In this role, you will develop and maintain high-quality software solutions, working closely with Product, UX, and Engineering teams. You will be responsible for developing web applications using C#, ...

Remote Fraud Analytics Manager, Full Stack

A financial technology company in the UK is seeking an experienced Analytics Manager to lead fraud monitoring and detection efforts. The ideal candidate will have over 7 years of experience in fraud management and analytics, strong SQL skills, and the ability to work cross-functionally. This position offers a co ...

Analytics Manager, Full Stack (Fraud Analytics)

Analytics Manager, Full Stack (Fraud Analytics) – affirm Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. We’re looking for a new team member to help lead our team’s ...

Full Stack Software Engineer United Kingdom

POSITION: Permanent, Full Time (30 to 37.5 Hours Per Week) LOCATION: Fully remote (in the UK or Europe) United by our vision. Leading with empathy. Pioneers in curiosity. Healios exists to bring exceptional healthcare to anyone, anytime, anywhere. By digitising entire clinical pathw ...

Full Stack Product Engineer (AI Commerce)

Founded by Paul Anthony, creator and co-founder of Primer (Series B, $425M valuation), Colossal is building at the intersection of generative app development and commerce infrastructure. Think: Lovable for commerce. We're backed by Tier 1 investors: Seedcamp, 10x Founders, Connect Ventures, and are ...

Senior Full Stack Engineer, Vice President

**About this role** You will be at the heart of BlackRock's Aladdin, building the platform that drives our and our client’s investment and trading operations. Each day, you will design, develop, and maintain scalable web applications and high-performance APIs, collaborating closely with traders, product ...

Senior Full Stack Engineer (FE Focused)

About the Engineering TeamAt ZOE, we're on a mission to empower people with the most advanced science and technology to transform their health.Our Engineering team sits at the heart of that mission. We’re a ~40 distributed team across the UK and EU, who thrive on solving complex challenges tog ...

Impactful Full Stack Data & AI Consultant

A leading data consultancy in the United Kingdom is seeking a Consultant - Data Engineer with expertise in building data pipelines and strong SQL skills. You will work directly with clients to deliver innovative data solutions, utilizing tools like Snowflake and Power BI. A growth mindset and 1-5 years of releva ...

Full Stack Engineer, Associate (.Net + React)

**About this role** **Full Stack Developer (Associate) — London Engineering Team (Preqin &** **eFront** **| BlackRock)** Preqin (part of BlackRock) is looking for a skilled **Full Stack Developer (Associate)** to join our **London Engineering Team** . In this role, you’ll help design, bu ...

Full Stack Product Engineer, AI Tools

Meet Aperture Aperture is a growth consultancy and advertising partner for some of the world's most ambitious ecommerce brands. We plan, build, and manage performance marketing programmes across Meta, TikTok, Google, and beyond — with a strong focus on creative strategy and paid social ...

Full Stack Engineer Field Operations Platform

Centrica plc in the United Kingdom is looking for a Software Engineer to enhance forecasting and scheduling capabilities within the Field Operations Platform. You will design and maintain software solutions while collaborating closely with cross-functional teams. The ideal candidate should possess stro ...

Senior Full Stack & AI Automation Engineer

Senior Full Stack & AI Automation Engineer – LondonRate: £500 – £530 per dayDuration: 1 year contract3 days onsite per week in London office (Battersea)As a key member of the Automation Team, you’ll design and build next-generation automation ...

Full Stack Engineer (GoLang / TypeScript / JavaScript)

Full Stack Engineer (GoLang / TypeScript / JavaScript) Permanent – HybridGreater Manchester Join a leading digital‑first organisation undergoing a major transformation of its core products and platforms. As a Full-Stack Engineer, you will play a key role in m ...

Energy Trading Full Stack Engineer — London

A global energy trading company in London is seeking a Full Stack Developer to work within the Global Analytics team. The role involves collaborating with business units to develop analytics applications for commodity trading. Candidates should have over 5 years of experience, particularly with C# and React, and ...

Full Stack & AI Automation Engineer Norwich

Service Service is seeking a Full-Stack Developer & Automation Specialist for their Norwich office. This role involves managing databases, integrating systems, and utilizing AI tools for workflow optimization. Ideal candidates are problem solvers with expertise in SQL, API integration, and frontend maintenanc ...

Senior Full Stack Engineer Shop/Ecosystem

UK - HQ - London About Eucalyptus We’re on a mission to make good health last a lifetime . More than 1 billion people live with obesity worldwide, driving preventable chronic conditions. We’re here to build better long‑term care. Euc is the company behind Juniper , ...

Staff Software Developer (C/Python Systems)

Senior Software Developer (C/Python Systems) About the Position: You will join a team working on Linux system tools with Python scripting and C coding. We’re using locked-down SELinux embedded in our Hardware Security Modules (HSMs), tackling the network stacks, security r ...

Python Developer & AI Engineer (Forward Deployed)

London, UK | Hybrid – 3 days in office Rate: Inside IR35 We are seeking a Python Developer & AI Engineer (Forward Deployed) to join a fast-moving team working across AI platform engineering and direct collaboration with the Investment Team. The role is split approximately 60/40 between ...

Project Based ML Developer Python & GenAI

Mindrift offers project-based AI opportunities for specialists in Glasgow, UK. The role involves designing computational STEM problems requiring expert Python programming and machine learning skills, ensuring the problems are computationally intensive. Contributors can earn up to $55 per hour, with fle ...

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    Full Stack Java Developer Python Jobs in United Kingdom Job Search Guide, Trends and Insights