Senior Full Stack Developer 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
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.

Reset

Create Job Alert

 
   
Reset

Senior Machine Learning Scientist Bioinformatics, Python, ML Europe

Senior Machine Learning Scientist - Bioinformatics, Python, ML - Europe, Remote A large global organization are seeking a Senior Machine Learning Scientist to develop and evaluate internal predictive models linking viral genotype and phenotype data based sensitivity analyses. The ro ...

Senior Lead Software Engineering Python, Cloud, AI ML

Job Description J.P. MorganChase is seeking a Senior Software Engineer with expertise in AWS and Python, and a passion for Machine Learning, to help engineer and deploy innovative ML solutions into production. You will join the Applied AI/ML Software Engineering team, collab ...

Senior Python SDET for Payments – API & UI Automation

JPMorgan Chase is seeking a Software Engineer III in Glasgow to enhance the Payments Technology team. In this role, you will design and develop robust test automation frameworks essential for maintaining a high-performance payment system. Successful candidates will demonstrate practical experience in Python, exp ...

Senior Python Automation Tester for AI & LLM Systems

Resillion is looking for a Senior Automation Tester (Python) to develop and maintain a Python-based automation framework for AI systems. The ideal candidate will have strong Python skills and hands-on testing experience with LLM-driven applications. Responsibilities include designing automated tests for conversa ...

Senior Python Automation Tester for AI & LLM Systems

Resillion is seeking a Senior Automation Tester with strong Python skills to develop scalable automation frameworks for AI systems, including LLM-driven applications. This hybrid role requires a solid background in test automation and experience with AI testing. Key responsibilities include designing automated t ...

Senior Lead Python Engineer Rates Risk & PnL (Athena)

JPMorganChase is looking for an experienced Senior Athena Python Rates Senior Lead Software Engineer to join our development team in Greater London. This role requires hands-on Python development skills and a strong financial services background to support Rates Risk and PNL business deliveries. Candidates will ...

Senior Python Backend Engineer — Global, AI Powered & Cloud

Grid Dynamics is seeking experienced engineers in Greater London. You will build and own engineering systems for global finance software, utilizing Python and modern cloud-native technologies. Ideal candidates are skilled in AI-assisted engineering and have experience with DevOps tools like Docker and Kubernetes ...

Senior Python Engineer: Lead, Mentor & Build Secure Cloud

CGI is looking for an experienced Python Software Engineer to join their team in Leatherhead, United Kingdom. You will work on innovative technical solutions and lead software development teams, ensuring quality through unit and integration testing. The ideal candidate will have at least 7 years of experience wi ...

Senior C++/Python Engineer — Low Latency FinTech Systems

A global financial technology firm is seeking a Senior C++ Developer to join its team in Belfast. The role involves designing and maintaining high-performance systems, mentoring junior engineers, and contributing to architecture in an agile environment. Candidates should have strong experience in modern C++ (C++ ...

Senior Lead Software Engineer — Java/Python, Data Platform

A leading global financial services firm seeks a Senior Lead Software Engineer to design and enhance data engineering solutions. You'll collaborate with agile teams to develop innovative technology products, contributing to technical strategy and fostering a culture of diversity and inclusion. Ideal candidates w ...

Senior Backend Engineer (Rust/Python) for Financial Tech

A financial services technology firm in the UK is seeking a financial software engineer to join their back-end team. This role includes engaging with stakeholders, designing solutions for data integration, and implementing cloud-native applications on AWS using Rust and Python. The ideal candidate will have a Ba ...

Senior Data Platform Engineer Java/Python, Risk Tech

A leading financial services firm is looking for a Senior Lead Software Engineer to join their Data Platform & Strategy team in Greater London. In this role, you will design and enhance advanced data engineering solutions that support business objectives. You will collaborate with agile teams and drive innovatio ...

Senior Backend Python Engineer – Scale & Impact (Hybrid, London)

A leading grounds maintenance company is seeking a Senior Backend Developer to join a product-focused engineering team. You will design and build backend applications that support complex workflows. The role combines exciting challenges in a hybrid working environment, fostering professional growth with clear ca ...

Senior Data Engineer – Azure Data Pipelines (Python/Scala)

This is a job posted by our partner Jooble. Below is a snippet of the job description. Technical Skills: Proficiency in programming languages such as Python, SQL, or Scala. Experience with cloud platforms and data storage solutions, particularly Azure. ...

Senior Python Tech Lead – Real Time Trading & Risk

J.P. MORGAN is seeking a Senior Lead Software Engineer in Greater London to join the Credit Trading - Realtime Risk team. The successful candidate will develop secure, high-quality code, provide technical guidance to teams, and influence product design and technical operations. Applicants should have expertise i ...

Senior Python Automation Engineer for AI & LLM Systems

Resillion is seeking a Senior Automation Tester (Python) to join their team in Glasgow. This role involves developing automation frameworks for AI systems, executing tests for conversational flows, and collaborating closely with product teams to ensure high-quality AI-powered features. The ideal candidate has st ...

Senior Backend Python Engineer Django REST & AI Data

A leading financial tech scale-up in Greater London is seeking Mid and Senior Python Developers to join its backend team. The role involves creating robust and scalable solutions in Python, designing REST APIs, and ensuring code quality. Candidates should have over 4 years of professional experience with Python, ...

Senior Python Data Engineer — REST APIs & AWS Lambda

A dynamic software development company in London is seeking an experienced developer with a strong background in Core Python (3.7+) and REST APIs. The ideal candidate has a minimum of 5 years’ experience, possesses strong problem-solving skills, and is comfortable in an Agile workspace. Familiarity with AWS Lamb ...

Senior Trader & Portfolio Manager — Intra day, Python Driven

A leading trading recruitment firm is seeking an Experienced Trader / Portfolio Manager to join their partners in London. This role offers a competitive salary ranging from £100,000 to £150,000 gross per annum, along with the opportunity to set up new trading teams or join existing desks. The ideal candidate sho ...

Senior SRE: Java/Python for Secure Collaboration Platforms

A global financial services firm is seeking a Site Reliability Engineer III to lead the integration of collaboration platforms like Microsoft 365 B2B and Google Workspace. The role includes managing secure external sharing solutions and ensuring platform reliability. Candidates should have a BS/BA and hands-on e ...

Senior Python GUI Engineer (Qt) Real Time Trading

A technology-driven trading firm in London seeks a Senior Python Engineer with Qt expertise to develop high-performance desktop GUI applications for real-time trading. The ideal candidate will have hands-on experience with Qt and a strong willingness to learn. Responsibilities include designing responsive interf ...

Senior SRE (Java/Python) for Secure Collaboration Platforms

A leading global financial services firm in the UK is seeking a Site Reliability Engineer III for their External Collaboration team. This role involves leading the development and integration of collaboration platforms such as Microsoft 365 B2B and Google Workspace. The ideal candidate should have a solid backgr ...

Senior Python Backend Engineer AI/ML, Hybrid London

Synechron is seeking a Senior Python Software Engineer in London for a hybrid role. You will architect and implement scalable backend systems for advanced AI/ML tools, emphasizing Python expertise and software design principles. The position offers opportunities for innovative AI product development within a dyn ...

Senior Python AI Backend Engineer – Credit Risk (Hybrid)

Remarkable Resourcing is looking for a Senior Python Software Engineer to join a high-impact consultancy in London. This contract position involves designing and building scalable backend systems for cutting-edge AI solutions, particularly in credit risk analysis. Responsibilities include developing production-r ...

Senior Software Engineer Python, TS & AWS | AI Driven

Liberty IT is looking for a Senior Software Engineer to join their team in Belfast, UK. The ideal candidate will have strong experience in Python, TypeScript, and AWS. You will be responsible for delivering high-quality software and developing cutting-edge AI features in a collaborative and agile environment. Th ...

Senior Python Architect & Tech Lead API & Cross‑Team

Deepstreamtech is looking for a Lead Software Engineer in Greater London, UK. The ideal candidate will have extensive experience in software engineering, particularly in Python, and will lead the design and development process as well as manage cross-functional teams. The role requires producing clean, maintaina ...

Senior Lead Python Engineer Rates Risk & PnL (Athena)

JPMorganChase is looking for an experienced Senior Athena Python Rates Senior Lead Software Engineer to join our development team in Greater London. This role requires hands-on Python development skills and a strong financial services background to support Rates Risk and PNL business deliveries. Candidates will ...

Senior Python Engineer: Real Time Data at Scale

Partnerize in Leeds is looking for a skilled Software Developer to enhance their systems processing vast amounts of data efficiently and resiliently. The role entails developing scalable technologies using Python and extensive collaboration with architects to build fault-tolerant solutions. Candidates should pos ...

Senior Backend Engineer (Python/Django) — Scale, Mentor & Impact

Preply is looking for a Senior II Backend Engineer to create and enhance backend features using Python/Django while leading cross-functional initiatives. This role requires experience in architectural patterns of large-scale applications and strong communication skills in English (B2+). The position focuses on b ...

Senior Software Engineer / Principal Software Engineer C++, Python

Senior Software Engineer / Principal Software Engineer- C++, Python - Financial / Banking. Candidates will have a minimum 8+ years C++ experience and excellent knowledge of Python -coming from a Financial / Banking background with knowledge of Equities, Futures & Options and Fixed Inc ...

Senior Python Engineer for AI Systems & FastAPI (Remote)

Mercor, headquartered in San Francisco, is looking for a Software Engineer for a contract position. This remote role involves developing and maintaining complex Python systems while collaborating with AI research teams. Candidates should have experience at top US tech firms and a proven track record in Python de ...

Senior Python API Engineer – AWS SaaS (Remote + Stock)

Client Server is seeking a Senior Software Engineer / Developer in London who specializes in Python, AWS, and API development. You will design and enhance core platform features while working within a collaborative environment. Opportunities include remote or hybrid work, a competitive salary of up to £100k, and ...

Senior Python Engineer Remote, AI Driven Production Systems

Spectrum IT Recruitment is looking for a Senior Software Engineer skilled in Python to join a rapidly growing team focused on AI solutions. This fully remote role involves building production-grade systems, designing APIs, and contributing to deployment strategies. The company fosters an engineering culture that ...

Senior AI/ML Software Engineer Python, AWS & Kubernetes

JPMorgan Chase & Co. is seeking a Lead Software Engineer to join their Applied Artificial Intelligence and Machine Learning team in Greater London. This role focuses on transforming banking operations by integrating AI/ML solutions and developing robust APIs and services. The ideal candidate will have proven exp ...

Senior Python Engineer Real Time Data, Remote & Equity

Vortexa Ltd is seeking a talented engineer to design and build robust data processing infrastructure in a fast-paced environment. The role includes ensuring data pipeline reliability and collaborating with engineers and data scientists. Candidates should have experience in Python, distributed systems, and backen ...

Senior Python Engineer: Real Time Data Pipelines (Remote)

Vortexa, a fast-growing technology company in Greater London, is seeking a skilled developer to design and build scalable data pipelines and applications. Candidates should be fluent in Python, experienced with distributed systems and excited about working in a dynamic startup environment. Responsibilities inclu ...

Senior Data Feed Analyst – Python‑Driven Data Ops

Fitch Group is hiring a Senior Data Feed Analyst in London to join their Chief Data Office. The role involves maintaining and improving data feed processes, ensuring accuracy and completeness of large datasets, and migrating legacy systems to modern Python workflows. Candidates should have strong attention to de ...

Senior Lead Software Engineering Python, Cloud, AI ML

This job is brought to you by Jobs/Redefined, the UK's leading over-50s age inclusive jobs board. Job Description We have an opportunity to impact your career and provide an adventure where you can push the limits of what's possible. As a Lead Software Engineer at JPMorgan Chase with ...

Senior Lead Software Engineering Python, Cloud, AI ML

Job Description J.P. MorganChase is seeking a Senior Software Engineer with expertise in AWS and Python, and a passion for Machine Learning, to help engineer and deploy innovative ML solutions into production. You will join the Applied AI/ML Software Engineering team, collab ...

Senior Web Engineer Hybrid London/Amsterdam, Python/Django

A technology firm is hiring a Senior Software Engineer to design and maintain high-performance web applications. This role requires strong Python and JavaScript skills, along with experience in frameworks like Django. The ideal candidate will manage features across teams, partake in peer reviews, and support pro ...

Senior Python Engineer — AR/VR Data Capture Systems

A global technology firm based in London is seeking an experienced Software Engineer to join their Reality Labs research team. The role involves developing software for prototype wearable devices and optimizing data collection platforms. Candidates should have over 8 years of experience, strong Linux skills, and ...

Senior Python Engineer Remote, AI Driven Production Systems

Spectrum IT Recruitment is looking for a Senior Software Engineer skilled in Python to join a rapidly growing team focused on AI solutions. This fully remote role involves building production-grade systems, designing APIs, and contributing to deployment strategies. The company fosters an engineering culture that ...

Remote Senior Python Engineer — Public API & AI Backend

Photoroom is seeking a Senior Python Engineer for its Public API team. The role involves designing and evolving our public API product, crucial for accessing Photoroom's AI capabilities. Candidates should have strong backend experience in Python and skills in API design, particularly with FastAPI. The position s ...

Senior Python Tech Lead AWS & TS, Hybrid UK

Xpertise Recruitment is seeking two experienced Python-focused Technical Leads for a long-term contract in the UK. This hybrid role requires strong backend skills in Python and TypeScript, alongside AWS expertise and a consultancy background. The ideal candidates will provide technical leadership, engage with cr ...

Senior AI/ML Software Engineer Python, AWS & Kubernetes

JPMorgan Chase & Co. is seeking a Lead Software Engineer to join their Applied Artificial Intelligence and Machine Learning team in Greater London. This role focuses on transforming banking operations by integrating AI/ML solutions and developing robust APIs and services. The ideal candidate will have proven exp ...

Senior Python Lead Engineer – Microservices for Delta One

A global investment bank is seeking a Lead Software Engineer based in Greater London. In this role, you will engineer scalable RESTful micro-services and APIs while guiding a team of developers. The ideal candidate should have extensive Python experience and a solid understanding of microservices architecture, C ...

Senior Data Engineer Lead Python, SQL, AWS, Microservices

A leading financial institution in London seeks a skilled Lead Data Engineer to enhance and deliver top-tier technology products. This role includes leading a team of Data Engineers, conducting Agile ceremonies, and delivering cloud-native microservice applications. The ideal candidate should have strong experti ...

Senior Lead Software Engineer — Java/Python, Data Platform

A leading global financial services firm seeks a Senior Lead Software Engineer to design and enhance data engineering solutions. You'll collaborate with agile teams to develop innovative technology products, contributing to technical strategy and fostering a culture of diversity and inclusion. Ideal candidates w ...

Senior Finance Data Scientist – Hybrid (R/Python/SAS)

Client Server is looking for a Senior Data Scientist in Newcastle, offering a salary up to £100k plus a hybrid working model. You will be responsible for managing data projects, liaising with clients mainly in finance and banking. The ideal candidate has strong skills in R, Python, SAS, and SQL, and possesses a ...

Senior Lead Python Engineer Real Time Trading & Risk

JPMorganChase is seeking a Senior Lead Software Engineer for their Credit Trading - Realtime Risk team in Greater London. In this pivotal role, you will deliver secure, scalable technology products while working closely with talented professionals. Responsibilities include providing technical guidance, developin ...

🚀 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

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