• United Kingdom Jobs Expertini profile avatar

    • Contract Full Stack Java Engineer React Python Jobs in UK

    Professional job seekers finding United Kingdom jobs through Expertini
    750,000+ professionals on Expertini 750,000+ Candidates
    Join our global community
    Explore Leading Employers
    High-Paying Careers
    Expertini Penguin Mascot Resume Score™
    Resume Score™ Instantly
    Upload Your CV
    Quick 30-second process

    Apply Today & Jumpstart Your Career on Expertini, Trusted Since 2008.

    1. Expertini
    2. United Kingdom
    3. Jobs
    4. Contract Full Stack Java Engineer React Python Jobs in United Kingdom

    5. Download PDF

    Reset

    Create Job Alert
      Add Alert

     
     
    Create Alert
     
    Reset

    Principal AI Governance Platform Architect

    J.P. MORGAN is looking for a Principal Software Engineer in Greater London to lead AI Governance Engineering efforts. The role involves designing and building governance platforms, developing reusable services, and ensuring compliance across AI/ML delivery lifecycles. Candidates should have strong software engin ...

    VP Lead Software Engineer Margin Technology

    Citi is seeking a Lead Software Engineer to join their global technology team in Greater London. In this role, you'll work with passionate engineers to build robust technical solutions, shaping the future of financial technology with minimal manual interventions. Key skills include experience in Java, Python, an ...

    OTel First Cloud SRE: Scale Observability & Automation

    Trimble Inc. is seeking a Cloud Site Reliability Engineer to lead an 'OTel First' strategy and enhance the reliability of global platforms. This role involves managing an observability platform, implementing automation using Terraform, and optimizing performance. The ideal candidate will have hands-on experience ...

    Senior Ads Analytics Engineer API, Spark & Airflow

    Roku is seeking a highly skilled Senior Software Engineer in Cambridge, England, to lead API Development and Big Data pipelines. With a strong emphasis on software and data engineering, the role involves designing, building, and maintaining scalable systems. Candidates should have 8+ years of experience, experti ...

    Senior Backend Engineer, Global Commerce Platform (Remote)

    Spotify is looking for an experienced backend engineer to join its Subscriptions Mission team in London or Stockholm. Your role will involve designing and building scalable backend systems, evolving services supporting payments, and collaborating with cross-functional teams to enhance user experiences. Candidate ...

    Hybrid AI Engineer | Build Scalable ML & LLM Solutions

    Halian is looking for an AI Engineer based in Reading, UK, to develop and deploy intelligent applications. The ideal candidate should have strong experience in software development focusing on AI/ML, with a degree in a related field, and proficiency in Python and Java. Key responsibilities include designing AI a ...

    Junior Platform Engineer FinTech Cloud & Networking

    Hunter Bond is recruiting a Junior Platform Engineer to join a FinTech client in London. The ideal candidate will have at least 2 years of experience in a similar role and a relevant degree in Computer Science or a STEM field. The role involves working on global high-frequency trading infrastructure, collaborati ...

    Senior Backend Engineer for Scalable Data & AI Systems

    A data-driven software company in Greater London is seeking a Backend Software Engineer to lead the architecture and development of scalable backend services. The role involves building robust APIs, collaborating with other engineers, and optimizing performance. Candidates should have 6+ years of experience in b ...

    Backend Engineer, Global Account Sharing

    hackajob is seeking a Backend Engineer to join the Account Sharing team in Greater London. In this role, you'll collaborate with Product Managers, Designers, and Analysts to build innovative financial products like international joint accounts. You should have strong backend programming skills (Java, Kotlin, Pyt ...

    Data Engineer, Prime Video Finance Analytics & Platform

    Prime Video & Amazon MGM Studios is looking for an experienced Data Engineer to join the Finance Analytics team in Greater London. This role involves building and optimizing data pipelines, implementing big data technologies, and working closely with business stakeholders to deliver analytics solutions. Candidat ...

    Platform Engineer, DevEx & Internal Tooling

    Selby Jennings is seeking a Platform Infrastructure Engineer - Developer Experience (DevEx) in London. In this role, you will work on enhancing the developer experience by building and refining internal platforms. Responsibilities include designing internal developer platforms, improving CI/CD workflows, and col ...

    Client Facing AI Native Software Engineer

    Oliver Bernard is hiring a Forward Deployed Engineer to collaborate with client engineering teams in making AI native engineering real. The role requires 5+ years of experience in building and shipping systems, strong skills in Python, Java, and TypeScript, as well as client-facing experience. The position is of ...

    Remote Software Engineer Flexible Hours & Cloud

    hackajob in Bristol is seeking a Software Engineer to contribute to planning and delivery across a variety of technologies in an agile environment. Key responsibilities include writing code using test-driven development, working with databases and cloud platforms, and mentoring teammates. The ideal candidate is ...

    Senior Developer Success Engineer: Scale Cloud Native Apps

    Temporal Technologies is looking for a Senior Developer Success Engineer to support our developer community in deploying and scaling Temporal. You’ll tackle challenges in cloud-native environments using your expertise in distributed systems. The ideal candidate should have over 6 years of experience in programmi ...

    Lead AI & Markets Tech Engineer (Credit Pre Trade)

    JPMorgan Chase & Co. is looking for a Lead Software Engineer to work within Credit Technology. This role involves building AI-native systems and enhancing trading capabilities through various technical solutions. Candidates should have over 5 years of hands-on experience with programming languages like Python, J ...

    Senior Security Engineer – Cloud & DevSecOps Leader

    A financial consulting firm is seeking a Senior Security Engineer to lead security engineering initiatives that protect digital finance systems. This role involves designing and implementing security protocols for cloud and on-premise environments, collaborating with engineering teams, and driving the integratio ...

    Senior Network & Cloud Automation Engineer

    A global telecommunications company is seeking a Senior Network Development Engineer responsible for designing, deploying, and supporting network fabric and systems. This role involves collaboration with cloud service providers and requires a deep understanding of networking protocols and cloud technologies. Ide ...

    Software Engineer, Equity Index Options Low Latency

    A leading trading firm in Greater London is seeking a Software Engineer to design and develop proprietary software for trading systems. This role requires an undergraduate degree in a relevant field and at least 2 years of experience in programming languages like Java, C++, and Python. The successful candidate w ...

    Senior Backend & Platform Engineer, Cloud Infra

    A leading technology company in London is seeking a Senior Software Engineer to design and build backend services that power its systems. In this hybrid role, you will collaborate with teams to develop production-grade services, maintain CI/CD systems, and manage AWS infrastructure. Candidates should have strong ...

    Senior Data Platform Engineer (Trading Systems)

    A leading Investment Manager in the UK is seeking an experienced Software Engineer for an initial 6-month role that could lead to permanent employment. The position involves working within a core engineering team to develop and enhance data and infrastructure platforms supporting systematic trading strategies. T ...

    Senior Software Engineer – Scalable Real Time Data Systems

    A leading tech company in Manchester is looking for a Senior Software Engineer to work in a hybrid role. You will lead a small team to build scalable data-driven systems and develop APIs while working with the latest technologies in cloud computing and big data. Ideal candidates will have over 6 years of experie ...

    Senior Software Engineer – Scalable Real Time Data Systems

    A data solutions company based in Manchester is seeking a Senior Software Engineer to enhance their data processing capabilities. The successful candidate will have over 6 years of experience in software development, strong coding skills in Java and Python, and experience with big data technologies. This role of ...

    Senior Software Engineer — Scale Robust, Secure Systems (Hybrid)

    A fintech startup in London is searching for a Senior Software Engineer to implement robust systems for their rapidly growing app. The ideal candidate will have extensive experience with high-volume applications and proficiency in various programming languages, including Python and Java. This role includes hybri ...

    Senior Backend Engineer — REST APIs & Microservices

    A leading technology company in the United Kingdom is seeking a Software Engineer to develop robust back-end services and applications. The role involves building and integrating RESTful APIs, enhancing scalable systems, and implementing CI/CD pipelines. Candidates should have strong proficiency in Java, Python, ...

    Lead Java Engineer Real Time Market Data, AI Driven

    Man Group is seeking a Lead Engineer for its Real-time Market Data team in Greater London. You will oversee a team of engineers, manage complex projects, and utilize advanced technologies like Java and Python to drive our market data infrastructure. The ideal candidate will have over 8 years of softwar ...

    Senior Software Engineer Core Platform (Rust/C++, Python)

    Durlston Partners LLP is hiring a Senior Software Engineer in London to design and develop core platforms that enable autonomous systems. You will work alongside exceptional engineers and tackle complex technical challenges in a collaborative culture. The ideal candidate has strong skills in C++, Java, ...

    Software Engineer – Cloud Native, GenAI & CI/CD (UK)

    A leading global professional services company based in Manchester is seeking a Software Engineer to develop traditional and serverless applications. The role requires a few years of industry experience in Java, Typescript, Python, or Go, and familiarity with Cloud Native technologies on AWS. Candidates will col ...

    Hybrid London: Senior Test Automation Architect

    A leading IT service provider is seeking a seasoned Test Automation Engineer in London for a hybrid role, requiring 15+ years of experience with core test automation practices. The ideal candidate will have hands-on expertise in automation using Java and Python, along with a deep understanding of CI/CD processes ...

    Senior Software Engineer Billing Microservices (Hybrid)

    A fintech solutions provider in Belfast is seeking a Senior Software Engineer to join the Billing engineering team. The role focuses on designing and developing software solutions, including building microservices and optimizing code for billing operations. Ideal candidates will have a Bachelor's degree in Compu ...

    Senior Software Engineer Billing Microservices (Hybrid)

    A fintech innovation leader in Belfast is seeking a Senior Software Engineer to join their Billing engineering team. This role involves designing, developing, and maintaining high-quality software solutions, focusing on microservices for billing operations. The ideal candidate has at least 5 years of software de ...

    Machine Learning Engineer AI Models & Systems

    A leading AI technology company in Greater London is seeking a talented Machine Learning Engineer to develop and implement cutting-edge artificial intelligence products. The role requires designing sophisticated models and refining existing systems. Ideal candidates will have a strong background in programming l ...

    Senior Performance Test Engineer – Remote & Cloud Focus

    A dynamic technology company in Manchester seeks a Senior Test Engineer to lead performance testing initiatives. You will drive testing strategies, analyze results, and mentor fellow testers. The role demands over 3 years in testing, proficiency with tools like JMeter and Gatling, and programming experience in l ...

    Software Engineer – AI & Secure Systems (On Site)

    A leading tech firm in Greater London is hiring a Software Engineer to join their cutting-edge team focused on developing innovative, mission-driven technology. This role emphasizes building impactful AI-powered tools and secure systems, requiring existing SC or DV clearance. Ideal candidates are skilled in lang ...

    Gen AI Engineer: Frontline Client Deployments

    A leading software firm in Greater London seeks a Forward Deployed AI Engineer to build and implement solutions using Generative AI technologies. You will engage directly with clients to deliver high-stakes projects and enhance the Gen AI strategy. The ideal candidate will possess a strong engineering background ...

    Staff Backend Engineer — Data Platform & Observability

    A leading circular fashion marketplace in the UK is seeking a Staff Backend Engineer to drive the technical vision of their data platform. You will champion engineering excellence and mentor a team of engineers. The ideal candidate will have extensive experience with distributed systems, Apache technologies, and ...

    Senior Backend Engineer, Commerce Platform Scale Online

    A leading audio streaming service seeks an experienced backend engineer to design and build scalable systems for its internal commerce platform. This role involves working with cloud technologies and collaborating across teams to enhance user experiences. The ideal candidate has over 5 years of experience in bac ...

    Senior Platform Engineer: AI Driven SDLC & Cloud Ops

    A diversified trading firm is seeking a skilled Software Engineer to design and maintain build/release/run tooling for development teams. Candidates should have six or more years of experience in software engineering and proficiency in GitHub Actions and at least one programming language such as Python, Go, Java ...

    Principal ML Engineer: Build Global AI & Data Platforms

    Apple is seeking a Principal Machine Learning Engineer in Greater London to lead the design, fine-tuning, and deployment of large language models. The ideal candidate should have extensive experience in machine learning engineering with a proven track record of shipping ML-powered products. Responsibilities incl ...

    Senior Software Engineer — Scale Robust, Secure Systems (Hybrid)

    A fintech startup in London is searching for a Senior Software Engineer to implement robust systems for their rapidly growing app. The ideal candidate will have extensive experience with high-volume applications and proficiency in various programming languages, including Python and Java. This role includes hybri ...

    VP Data Engineer, Lakehouse & AI Platform

    A leading financial services firm is seeking a Data Engineer to design, build, and maintain data pipelines on its modern Lakehouse and AI data platform. The ideal candidate will have a strong programming background in Python or Java, knowledge of SQL, and experience with data processing frameworks such as Apache ...

    AI Driven Lead Software Engineer (Remote)

    Scott Logic is seeking a Lead Agentic Software Engineer in Edinburgh to drive AI-augmented software development practices. You will lead a multidisciplinary team to solve complex software problems and influence client development practices. Ideal candidates should have strong technical leadership skills and a go ...

    Senior Software Engineer, Ads Analytics & Data Pipelines

    Roku, Inc. is looking for a Senior Software Engineer in Manchester, UK, to develop scalable APIs and manage big data solutions. Candidates should have 8+ years in software or data engineering, with skills in Apache Spark, Airflow, and a strong foundation in Java, Python, or Scala. The role requires collaboration ...

    Senior Data Platform Engineer (Trading Systems)

    A leading Investment Manager in the UK is seeking an experienced Software Engineer for an initial 6-month role that could lead to permanent employment. The position involves working within a core engineering team to develop and enhance data and infrastructure platforms supporting systematic trading strategies. T ...

    SQL Database Developer in London Quant Capital

    SQL Database Developer London, United Kingdom Posted 11 months ago Tech Stack SQL Java Next.js Databases Qualifications Basic programming skills in OO languages such as Java (version 7) (desirable) </l ...

    Software Engineer, London

    Location London Employment Type Full time Location Type Hybrid Department Engineering We’re Hiring: Software Engineer Talos operates at the intersection of crypto and capital markets, building high-performance systems to support ...

    Cloud Automation Engineer

    Java Script Works is seeking an Automation Platform Specialist in Reading, United Kingdom. The role involves developing and maintaining automation scripts, utilizing a range of technologies including Amazon AWS, Python, and Bash. Ideal candidates will be experienced in cloud environments and able to co ...

    DataSphere Lead Architect — ETL & Data Modeling

    LA International Computer Consultants Ltd is seeking a Lead DataSphere Consultant in London, UK. The role involves architecture for data integration and requires proficiency in ETL processes, data modeling, and programming with Python, SQL, and Java. Strong leadership and communication skills are essential. < ...

    DataSphere Lead Architect — ETL & Data Modeling

    LA International Computer Consultants Ltd is seeking a Lead DataSphere Consultant in London, UK. The role involves architecture for data integration and requires proficiency in ETL processes, data modeling, and programming with Python, SQL, and Java. Strong leadership and communication skills are essential. < ...

    React Developer Up to £550 (Outside IR35!!) P/D

    Overview We are looking for a React Developer, with strong experience working in the finance sector, to join a leading trading firm based in London. This role will give you the opportunity to work on Greenfields development projects, focusing on buy side trading platforms, working alongside ...

    Principal Software Engineer

    £80,000 - £100,000 + bonus and shares The Opportunity We are VERY excited about this opportunity. We’ve been working with this client for years and every candidate we have ever placed with them have loved it there. Contractors go perm with them, and permies stay for years. If you are consid ...

    🚀 Boost Your Hiring Chances with Our AI-Powered Tool-Kit

    Stand out from thousands of applicants. Use our proven career tools to optimize your applications and land your dream job faster.

    To-Do Planner

    Organize your job search and personal tasks. All data is confidential.

    Open Planner →

    Wellbeing Center

    Access your confidential wellness report and resources to manage job search stress.

    Check Wellbeing →

    Skill Coach

    Plan your skill development with O*NET support to stay competitive in your field.

    Start Coaching →

    Outfit Helper

    Get AI-powered suggestions on what to wear for your next interview.

    Find Outfit →

    Income Tax Calculator

    Plan your finances with our calculator, updated for 2025 tax regulations.

    Calculate Tax →

    Salary Benchmark

    Get accurate, AI-supported salary trends to know your worth and negotiate better.

    Check Salaries →

    Interview Practice

    Practice for any interview with AI-enabled Q&A sessions. All data is private.

    Start Practicing →

    Interview Predictor

    Use our AI-supported tool to predict potential interview questions based on your resume.

    Predict Questions →

    Interview Practice Timer

    Use our mock interview trainer to perfect your answers under timed conditions.

    Start Timer →

    Behavioral Mastery

    Ace tricky behavioral interviews with our AI-powered practice module.

    Master Answers →

    Question Journal

    Confidentially record interview questions you were asked for future reference.

    Open Journal →

    Interview Ace

    A comprehensive tool to help you master every aspect of your interviews.

    Become an Ace →

    Q&A Logs

    Confidentially track your answers to common questions and refine them over time.

    View Logs →

    Application Planner

    Schedule and organize your job applications in one confidential planner.

    Open Planner →

    Cover Letter Tool

    Create perfect, tailored cover letters for each application with AI support.

    Generate Letter →

    Resume Score

    Get instant feedback on your resume with our NLP-supported analysis tool.

    Check My Score →

    ATS Score

    Check your resume's compatibility with Applicant Tracking Systems (ATS).

    Check ATS Score →

    Application Analyzer

    Use AI to analyze job descriptions and optimize your application materials.

    Analyze Application →

    Career Visualizer

    Confidentially plan and visualize your long-term career path and goals.

    Visualize My Career →

    Offer Genius

    Get intelligent insights and strategies to confidently negotiate job offers.

    Negotiate Offers →

    JobFlow

    Track your entire job search progress from application to offer with this intelligent tool.

    Track My Flow →

    JobSense

    Our intelligent matching engine that provides smart job recommendations.

    Get Smart Matches →

    Networking Toolkit

    Tools to build and manage your professional connections. All data is confidential.

    Build Network →

    Professional CV

    A classic, O*NET supported template for corporate and professional roles.

    Use This Template →

    Executive CV

    A premium, O*NET supported template designed for senior and C-level positions.

    Use This Template →

    Modern CV

    A fresh, stylish, O*NET supported template perfect for tech and modern industries.

    Use This Template →

    Creative CV

    A visually distinct, O*NET supported template for design and artistic roles.

    Use This Template →

    Minimalist CV

    A clean, simple, O*NET supported template that focuses purely on content.

    Use This Template →

    Europass CV

    The standard European Union recommended format for wide compatibility.

    Use This Template →

    Student CV

    An institution-recommended template perfect for internships and first jobs.

    Use This Template →

    Graduate CV

    An institution-recommended template for recent graduates entering the workforce.

    Use This Template →

    Academic CV

    The researcher-recommended format for roles in academia and research.

    Use This Template →

    Developer/IT CV

    A tech-savvy recommended template to highlight your technical skills.

    Use This Template →

    Skilled Worker CV

    A trades-recommended template to showcase hands-on skills and experience.

    Use This Template →

    Monochrome CV

    A sleek, black-and-white, O*NET supported template for a professional look.

    Use This Template →

    Art CV

    An artist-recommended template that allows your creativity to shine.

    Use This Template →

    Harvard CV

    A researcher-recommended template based on the classic Harvard format.

    Use This Template →

    Volunteer Research

    Help us improve our platform by joining our community research program.

    Join Research →

    Review Us

    Share your experience with our tools to help other job seekers.

    Share Experience →

    Register

    Create your free account to save jobs, build your profile, and track applications.

    Create Account →

    Login

    Access your dashboard, manage applications, and continue your job search.

    Access Your Account →

    Profile Builder

    Create a comprehensive professional profile that attracts recruiters and showcases your skills.

    Build Your Profile →

    View Profile

    See your public profile exactly as employers will see it. Make sure it's perfect.

    Preview Profile →

    Bookmarked Jobs

    Keep track of all your saved job opportunities in one organized place.

    View Saved Jobs →

    Your Reviews

    View and manage all the company reviews you've submitted.

    See Your Reviews →

    Following

    Manage the list of companies you follow to stay updated on their new openings.

    Manage Following →

    Find Companies

    Discover and research top employers in your country and industry.

    Discover Employers →

    Standalone CV Builder

    Use our O*NET supported CV builder to create a professional resume from scratch.

    Build Your CV →

    PDF to DOC (Beta)

    Convert your PDF resumes or documents into editable Word (DOC) format.

    Convert PDF →

    DOC to PDF (Beta)

    Create universally compatible PDF documents from your Word (DOC) files.

    Create PDF →

    General FAQ

    Find answers to common questions about our job site and platform.

    Read FAQ →

    Job Seekers FAQ

    Get help and find answers to questions specifically for job seekers.

    Get Help →

    Job Matching

    Learn about the technology and algorithms behind how we match you to jobs.

    Learn How →

    Personalized Matching

    Discover how we use your profile and activity to provide customized job suggestions.

    Learn More →

    Quick Apply

    Understand our fast application process and how to make the most of it.

    Learn More →

    Alert Frequency

    Learn how to manage your job alert settings so you get the updates you want.

    Manage Settings →

    Job Alerts Guide

    A complete guide to understanding how job alerts work and how to use them effectively.

    Read Guide →

    Resume Matching

    Learn how our system matches your resume to job requirements.

    Learn More →

    Ethical Branding

    Read our guide to building a professional and ethical personal brand.

    Read Guide →

    Candidate Visibility

    Learn how to increase your visibility to recruiters on our platform.

    Increase Visibility →

    Verified Badge

    Find out how you can get a verified badge to build trust with employers.

    Get Verified →

    AI ATS Technology

    Learn about the advanced AI and ATS technology that powers our platform.

    Learn More →

    ATS Ranking

    Understand how Applicant Tracking Systems rank you as an applicant.

    Learn More →

    Semantic Matching

    Learn how our AI-powered semantic matching goes beyond keywords.

    Learn More →

    💡 Tools that really enhance your application chances and career growth.

    Go to Your Dashboard →

      Contract Full Stack Java Engineer React Python Jobs in United Kingdom Job Search Guide, Trends and Insights