Senior Python Developer Pythonawsreact Jobs in London, 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 Full Stack AI Engineer | Hybrid (UK)

A global financial information leader is seeking a Senior Software Engineer, Full Stack - AI, to develop innovative solutions in London or Manchester. This role involves designing ML/AI applications using modern technologies and requires 7+ years in distributed architectures. Candidates should excel in Python an ...

Senior Quantitative Researcher PM Engagement

A leading investment firm in Greater London seeks a Senior Quantitative Researcher. This role involves improving portfolio managers' performance through quantitative analysis and model development. Candidates should possess 5+ years of experience in equity investing, advanced quantitative skills, and strong prog ...

Senior Pricing Data Scientist: Build Adaptive ML Pricing

A leading logistics technology firm in Greater London is looking for a Senior Pricing Data Scientist to enhance pricing engines and adapt strategies through dynamic experiments. You'll leverage ML to improve decision-making while translating complex insights into actionable stories for stakeholders. Ideal candid ...

Senior Data & Reporting Analyst Insurance Risk

A global insurance leader is seeking a Senior Data & Reporting Analyst in London. In this exciting role, you will review regulatory reporting, enhance data quality, and support catastrophe risk development. Strong skills in R/Python and SQL are essential. The company values collaboration and offers a comprehensi ...

Principal AI Platform Architect (Hybrid London)

A leading AI-focused technology company is seeking a Senior Software Architect based in London. The role involves defining software architecture, guiding engineering teams, and leading the delivery of innovative AI-integrated systems. Candidates should have over 8 years of experience, deep expertise in Python an ...

Production LLM Engineer RAG & LangChain Specialist

An AI-native consultancy in Greater London is seeking a Senior AI Engineer to build production LLM applications. This hands-on role involves designing LLM workflows and agentic systems. The ideal candidate should have a strong Python engineering background and experience in production-level AI systems. This posi ...

Senior Research Engineer: ML Pipelines for Production

A leading proprietary trading firm is looking for a Senior Research Engineer to develop their trading model research framework and partner with Quantitative Researchers. Candidates should hold an advanced degree and bring over 8 years of experience in MLOps or ML Research. Strong proficiency in Python and experi ...

Senior Distributed Systems Engineer, Electronic Trading

Bloomberg is seeking a Senior Software Engineer for its Electronic Trading Shared Services in London. You'll build high-performance distributed systems and design APIs that facilitate data exchange across applications. Candidates must have experience with C++ and Python, a degree in a relevant field, and a stron ...

Senior Fixed Income Attribution Analyst

LegalAndGeneral is seeking a Senior Attribution Analyst in London to deliver attribution analysis across various asset classes including Fixed Income. The role requires a degree in a quantitative subject, analytical experience in investment management, and proficiency in tools like Python and SQL. Benefits inclu ...

Senior Solution Engineer AI Driven FinServ

A leading AI software company in Greater London seeks a mid-senior level Solutions Engineer to translate customer needs into impactful use cases. You will collaborate with clients and lead high-stakes projects, utilizing your technical and interpersonal skills in a dynamic, innovative environment. Ideal candidat ...

Senior ML Engineer: National Security AI & LLMs

A leading defense and technology firm in London seeks a Senior ML Engineer to design and develop machine learning models that enhance national security. You will lead experimentation cycles, transition validated solutions into production, and collaborate with various stakeholders using AWS services. This role re ...

Payments Operations Data Scientist Fraud & ML

A leading EdTech company is seeking a Senior Data Scientist to join their Payments Operations team. This role focuses on optimizing payment workflows and fraud management through data analysis. Ideal candidates will have at least 4 years of experience in fraud management and analytics, and proficiency in SQL and ...

Senior Product Analytics Scientist Remote M/W F + Equity

A leading fintech company in London seeks a Senior Product Data Scientist to enhance product analytics for the Zable app. This role involves understanding user behavior and driving the experimentation lifecycle, influencing key business decisions. Required qualifications include 4+ years in data analytics, profi ...

Senior Software Engineer, Unified Platform (Data at Scale)

A leading trading firm is seeking a Senior Software Engineer to join their Unified Platform organization. You will develop innovative software solutions to process large-scale data, partnering closely with internal users. The ideal candidate has 2-3 years of experience in platform-level software development and ...

Lead AI Engineer Build Next Gen AI Systems

A global leader in employee engagement is seeking a Senior AI Engineer based in London. The role involves building production-ready AI solutions and managing cloud infrastructure, while collaborating with various teams to enhance development and customer experience. Candidates should possess strong Python skills ...

Product Engineer: Build Scalable Incident AI Platform Remote

A leading AI incident response platform in the UK is seeking a Mid-Senior level engineer to enhance their capabilities. The role involves building production-ready applications in Go, Python, Ruby on Rails, or React, as well as engaging with customers for feedback. Employees are offered market-leading medical in ...

Delivery Lead, Commercial Data & AI Consulting

A fast-growing data & AI consultancy in London is seeking a Commercial Data Consultant to lead client projects and manage teams. You'll work closely with senior stakeholders to deliver impactful insights, requiring around 4+ years of consulting experience and familiarity with data tools like Excel, SQL, and Pyth ...

Senior Backend Engineer — AI Platform (Hybrid London)

A growing AI startup in London seeks a Staff/Senior Backend Engineer to build robust systems for their AI platform. Candidates should have 4+ years of experience in software engineering, especially with technologies like Python and FastAPI. The role is hybrid, requiring in-person work four days a week, and offer ...

Senior NetOps Engineer Live Broadcast Networks (Hybrid)

A global sports entertainment company in London is seeking a Senior Network Engineer to design and maintain critical network infrastructure. The role involves implementing security best practices, developing automation strategies using Python and Ansible, and utilizing monitoring tools like Grafana. Ideal candid ...

Senior Quantitative Risk & Analytics Specialist

A leading financial market infrastructure provider in Greater London seeks a Senior Associate in Quant Risk Management. The role involves developing risk management models, programming in Python and R, and validating analytics. Candidates should have a degree and 2+ years of relevant experience in financial risk ...

Insight Analyst: Drive Data Driven Decisions (Hybrid)

A leading quantitative research and technology firm is seeking an Insight Analyst to facilitate data-driven decision making in London. You'll lead projects improving business performance and work closely with senior leadership. Ideal candidates will have strong analytics experience, excellent communication skill ...

Senior Computer Vision Scientist — Build Vision Models

A high-growth InsurTech company in London is seeking a Senior Data Scientist specializing in computer vision to lead the development of innovative data products. In this role, you'll work on image classification, collaborate across teams, and impact business outcomes significantly. The ideal candidate will have ...

Senior Data Analytics & Platform Lead

A leading analytics firm in Greater London is seeking a Senior Business Data Analyst with expertise in data aggregation and analytics platforms like Azure and Databricks. The successful candidate will engage with technical and non-technical stakeholders, develop documents for product support, and maintain backlo ...

Senior Software Engineer Production AI & Web (London)

A pioneering tech firm based in London is seeking a Senior Software Engineer to design and maintain critical backend services and create user-facing components. This hybrid role emphasizes real-world impact, with meaningful equity and extensive company benefits. Ideal candidates will have a strong background in ...

Senior Principal Data Scientist Aviation ML Leader

A leading analytics firm in London seeks a Senior Principal Data Scientist to drive advanced analytics in the aviation sector. This pivotal role emphasizes mentorship, technical leadership, and hands-on development of innovative data-driven solutions. Ideal candidates should be proficient in Python and SQL, expe ...

Marketing Mix Modelling Analytics Consultant — Hybrid

A leading analytics firm in London is seeking a Senior Analytics Consultant to drive advanced Marketing Mix Modelling and econometric projects. You will transform data into actionable insights, working closely with clients and teams. Ideal candidates will have hands-on experience in coding (SQL, R, Python) and a ...

Senior Data Architect — Workday Migration & Data Governance

A leading UK organization is seeking a Senior Data Architect to support the migration of Finance and HR divisions to Workday. The role involves designing scalable data architecture solutions and ensuring data integrity, security, and governance. Candidates should have extensive experience in enterprise-scale dat ...

Full Stack Data Scientist: AI & Knowledge Systems

A leading technology consulting firm in London is seeking a Full Stack Data Scientist to develop and implement AI solutions. The ideal candidate will combine data science with software engineering capabilities, focusing on machine learning and knowledge graphs. Responsibilities include designing advanced models ...

SC Cleared Senior AI/ML Scientist (Hybrid)

A leading defense technology company is seeking a Senior Data Scientist & Machine Learning Researcher. This role involves developing AI solutions for mission-focused problems, requiring a BSc in a relevant field and expertise in Python and ML packages. You will lead projects from idea scoping to delivery, collab ...

Senior Backend Engineer — Scale Smart Saving Tech

A financial technology company is seeking a Senior Backend Engineer to create modular, scalable systems and mentor junior engineers. Ideal candidates have over 5 years of experience, strong problem-solving skills, and proficiency in Python and related frameworks. The role involves cross-functional collaboration ...

Remote Senior Backend Architect (Multitenancy & IAM)

A tech learning company seeks a Senior Backend Engineer to lead the development of scalable multitenant infrastructure. The role emphasizes strong architectural principles, expertise in statically typed languages, and readiness to master Python 3.x. Enjoy a fully remote, flexible work environment with competitiv ...

Senior Backend Engineer Scalable Systems (Remote)

A dynamic software development firm seeks a Senior Back End Software Engineer to design and maintain high-quality software solutions. Candidates should have over 7 years of experience, particularly with Python and FastAPI, alongside strong skills in AWS and Kubernetes. This role offers remote work flexibility an ...

Senior PAM Engineer: Automate & Secure Privileged Access

A leading financial markets infrastructure provider is seeking a Senior Security Engineer in London. This role involves deploying, configuring, and maintaining PAM platforms to protect privileged accounts. Significant experience with PAM platforms, Windows/Linux administration, scripting in PowerShell/Python, an ...

Senior Full Stack Engineer: Lead, Architect & Scale SaaS

A leading infrastructure and managed services provider in London seeks a Senior Full Stack Engineer to drive delivery of key features and mentor the engineering team. The ideal candidate will have extensive experience in a SaaS environment, focusing on scalable solutions with technologies like React, Node.js, an ...

Senior Data & Reporting Analyst — Exposure Management & Automation

A global insurance leader is seeking a Senior Data & Reporting Analyst to enhance reporting processes within the Exposure Management team. The role involves automating workflows, improving data capture, and ensuring timely regulatory returns. Candidates should have strong coding abilities in R and/or Python, alo ...

Senior Investment Analyst TAA & Portfolio Oversight

A leading financial services group in Greater London seeks a Senior Investment Analyst to join their Institutional Retirement Investments team. This role involves monitoring asset allocation, developing tools for portfolio oversight, and collaborating with various teams. Ideal candidates will have a quantitative ...

Senior Azure Databricks Platform Lead

A leading recruitment agency is looking for an experienced Azure Databricks Engineer in Greater London. This senior role demands expertise in Azure Data Services and Databricks alongside strong Python and SQL skills. The engineer will be responsible for developing and optimising data platforms, working closely w ...

Senior Operations Planning & Analysis Leader

A leading international insurance organization is seeking a Senior Analyst for Operations Planning & Analysis in London. This role involves developing capacity models, conducting productivity analyses, and collaborating with stakeholders to improve operational efficiency. Candidates should have strong analytical ...

Senior Data Scientist — Pricing & Risk (Hybrid London)

A leading insurance firm in London is seeking a Senior Data Scientist to apply data science and machine learning to commercial insurance challenges. Responsibilities include delivering impactful analytics, leading analytical projects, and mentoring junior Data Scientists. The role offers a hybrid working model a ...

Senior Insights Analyst ML & Data Dashboards Lead

A leading mobility technology provider in Greater London seeks a Senior Insights Analyst to enhance data analysis and machine learning practices. You will conduct complex analyses, lead dashboard creation, and mentor peers in Python and statistics. This role requires excellent communication skills to bridge tech ...

Senior Credit Risk Analyst — Remote First with Equity & Growth

A leading fintech company in London is seeking a Senior Credit Risk Analyst who will drive meaningful change in consumer finance products. This role requires confidence in data and coding skills, particularly in Python and SQL. The successful candidate will define credit strategies, derive insights from data, an ...

Senior Data Analyst, Payments Success & Strategy

A leading payment processing company in Greater London seeks a Senior Data Analyst to enhance payment strategies for Tier-1 merchants. You'll conduct deep data analysis, A/B testing, and develop automation tools, while collaborating with cross-functional teams to drive merchant performance. The ideal candidate h ...

AI Platform Engineer: Cloud AI, Automation & APIs

Magnit Global is seeking a Senior AI Platform Engineer in Central London to design and implement AI-ready cloud solutions. The role involves developing automation frameworks, REST APIs, and supporting innovative AI-driven solutions. The ideal candidate will have strong skills in Python, PowerShell, and real-worl ...

Senior AI Engineer: Enterprise ML & GenAI Lead

A leading consulting firm in the United Kingdom is seeking a Senior AI Engineer for a leading oil and gas client. This position involves designing and deploying AI solutions and requires extensive experience in AI/ML, specifically in Python and associated libraries. The ideal candidate should have strong strateg ...

Strategic Pricing Transformation Lead Global Portfolios

A leading international insurer is seeking a Senior Pricing Strategy & Transformation Lead in London. This hybrid role involves steering pricing transformation initiatives, improving model performance, and mentoring junior staff. Ideal candidates will have experience in general insurance pricing and analytical s ...

Senior AI Evaluation & Fairness Scientist

A leading analytics firm in Greater London is seeking a Senior Research Scientist to define evaluation methodologies for high-stakes AI systems. This role involves statistical analysis, dataset design, and translating regulatory guidance into audit methodologies. Candidates should have over 4 years of experience ...

Production LLM Engineer RAG & LangChain Specialist

An AI-native consultancy in Greater London is seeking a Senior AI Engineer to build production LLM applications. This hands-on role involves designing LLM workflows and agentic systems. The ideal candidate should have a strong Python engineering background and experience in production-level AI systems. This posi ...

Senior AI Evaluation & Fairness Scientist

A leading analytics firm in Greater London is seeking a Senior Research Scientist to define evaluation methodologies for high-stakes AI systems. This role involves statistical analysis, dataset design, and translating regulatory guidance into audit methodologies. Candidates should have over 4 years of experience ...

Senior AI Engineer: Enterprise ML & GenAI Lead

A leading consulting firm in the United Kingdom is seeking a Senior AI Engineer for a leading oil and gas client. This position involves designing and deploying AI solutions and requires extensive experience in AI/ML, specifically in Python and associated libraries. The ideal candidate should have strong strateg ...

Senior Backend Engineer Scalable Distributed Systems

Wise is looking for a Senior Software Engineer I to work on Account Communications in London. You'll improve delivery reliability and evolve platform infrastructure. Ideal candidates will know backend languages like Java, Kotlin, Python, or Go. Strong experience in designing scalable systems is required. Compens ...

🚀 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 Python Developer Pythonawsreact Jobs in London Job Search Guide, Trends and Insights