Senior Software Engineer Fullstack Python React 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

Hybrid Software Engineer Catalog Insights & Analytics

A leading data-driven marketing platform in London is looking for a Software Engineer for its Catalog Insights Team. Your role includes delivering key product capabilities for Marketing Analytics, designing data processing pipelines, and ensuring end-to-end ownership of product solutions. The ideal candidate has ...

Lead Software Engineer, Frontier AI Platform (Hybrid)

A leading AI consultancy, located in Greater London, is looking for a Lead Software Engineer to scale their groundbreaking Frontier Decision Intelligence platform. The role involves driving technical contributions, designing customer-facing solutions, and collaborating with cross-functional teams. Ideal candidat ...

Senior Full Stack AI Engineer: Build Production Ready AI

A leading technology company is seeking a Full Stack Engineer to join their team in Birmingham. The ideal candidate will have 5+ years of experience in software engineering and be proficient in React, TypeScript, Python, and Node or Go. This role involves building and shipping AI-driven features and requires a s ...

Senior Full Stack Engineer: Build Secure, Scalable Identity

A leading technology company based in the UK is seeking a skilled software engineer to join their team. The successful candidate will work on building and maintaining scalable systems using TypeScript and frameworks like React, as well as backend technologies such as Kotlin, Python, and Ruby. Responsibilities in ...

Internal Tools Engineer, Safeguards Foundations

A leading AI safety firm based in London is seeking a Software Engineer to enhance internal tooling used for review and enforcement processes. The ideal candidate should have over 4 years of experience, strong knowledge of Python and React, and the ability to work closely with both technical and non-technical te ...

Forward Deployed Full Stack AI Engineer

A leading AI technology firm is looking for a Full Stack Software Engineer (Forward Deployed) to collaborate with public sector teams in building impactful AI applications. The role involves designing architectures, mentoring staff, and ensuring scalable solutions. Ideal candidates will have a Master's or PhD in ...

AI First Full Stack Engineer for Autonomous Agents

TopTek Talent is seeking a Full Stack Software Engineer specializing in AI, based in London with a hybrid work model. You will play a pivotal role in transitioning the platform architecture to an AI-first approach, building autonomous agents and managing full-stack execution with a focus on Python and React. The ...

Senior Full Stack Python/Django Engineer (Remote)

Mongoose Gray is seeking a Full Stack Engineer to work in a fast-paced software environment in Greater London. The role offers a salary of £90,000 per year with benefits and remote working options. Responsibilities include developing front-end solutions with React and Typescript, building scalable back-end syste ...

Senior Platform Engineer: Automation & Mentoring

A leading online gambling company in Manchester is seeking a Senior Software Developer to design and maintain core infrastructure tools. This role involves leadership and mentoring, focusing on building efficient software delivery systems using Golang, Python, Typescript, and React. Ideal candidates should have ...

Senior Software Developer

Senior Software Engineer (Contract)3-Month Engagement | Outside IR35 | Up to £475 per day | Hybrid (London / Ipswich)A rapidly expanding SaaS company is seeking an experienced Senior Software Engineer to support their agile delivery team on an initial 3-month contract. This position offers a strong m ...

Senior Software Developer

Senior Software Engineer (Contract)3-Month Engagement | Outside IR35 | Up to £475 per day | Hybrid (London / Ipswich)A rapidly expanding SaaS company is seeking an experienced Senior Software Engineer to support their agile delivery team on an initial 3-month contract. This position offers a strong m ...

Senior Software Developer

Senior Software Engineer (Contract)3-Month Engagement | Outside IR35 | Up to £475 per day | Hybrid (London / Ipswich)A rapidly expanding SaaS company is seeking an experienced Senior Software Engineer to support their agile delivery team on an initial 3-month contract. This position offers a strong m ...

Hybrid Full Stack Engineer AI Powered NHS Care Portal

Paloma Health in Greater London is seeking a Fullstack Engineer to improve access to autism and ADHD assessments. You will collaborate with cross-functional teams to develop AI-powered software. Ideal candidates have four years of experience and proficiency in C# and TypeScript. The role supports career developm ...

Go Full Stack Developer

Senior Full Stack Developer12-Month Fixed-Term Contract | Hybrid Working (2 Days per Week in London) Salary £54,000 - £61,000 pa plus generous pension and holidaysA prestigious client is seeking an experienced Senior Full Stack Developer to join a high-performing technology team delivering innov ...

Software Engineer

Software Developer Hybrid (2-3 days on-site) | Guildford, UK £40-50k per annum Hit Apply below to send your application for consideration Ensure that your CV is up to date, and that you have read the job specs first.We're partnering with an award-winning cleantech business, ...

Software Engineer II QuantumBlack Labs

Software Engineer II - QuantumBlack Labs Join to apply for the Software Engineer II - QuantumBlack Labs role at QuantumBlack, AI by McKinsey . Your Impact You will be part of QuantumBlack Labs and work in a team of software engineers, product managers, data scient ...

Data Engineer

Get AI-powered advice on this job and more exclusive features. Pathfinder - IT Recruitment provided pay range This range is provided by Pathfinder - IT Recruitment. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range </h3 ...

Growth Engineer: Fullstack for Revenue & Ecosystem

A dynamic tech startup based in the United Kingdom is seeking a full-stack engineer who is passionate about building growth, ecosystem, and monetization systems. The ideal candidate has over 5 years of experience with user-facing products, a strong sense of product and UX, and is comfortable utilizing data analy ...

Fullstack Growth Engineer: Activate, Monetize, Retain

A software development company in Greater London is in search of a full-stack engineer dedicated to building powerful growth and monetization systems. The ideal candidate will have over 5 years of experience creating user-facing products and possess strong collaborative skills. Responsibilities include developin ...

Fullstack Engineer: Ad Serving & AdExchange (Remote)

An innovative advertising company is seeking a Fullstack Engineer to optimize ad serving technologies and contribute to backend services. The role requires 5+ years of TypeScript experience and a strong understanding of browser internals. Successful candidates will work in a flexible environment, improving scala ...

Senior Full Stack Architect & Tech Lead — Scale & Strategy

Calyptus is looking for a Senior Full Stack Engineer in the UK to lead the technical architecture of their platform. Responsibilities include owning the full stack from React Native to Django API and managing the engineering team. Applicants should have 7+ years of experience, strong skills in React Native and P ...

Senior Full Stack Engineer

Senior Full Stack EngineerBelfast Hybrid Permanent | Full Time Contact: Ryan Quinn on LinkedInCompany: OCHO - Building Teams The OpportunityOCHO is partnering with a high-performing product engin ...

Senior Engineers II React/React Native | UK + EU (remote)

About Cleo At Cleo, we’re not just building another fintech app. We’re on a mission to fundamentally change humanity’s relationship with money. Imagine a world where everyone, regardless of background or income, has access to a hyper‑intelligent financial advisor in their pocket. That’s the ...

Hybrid Full‑Stack Engineer for Clinical Trials Platform

Lindus, based in Greater London, is on the lookout for a mid-level software engineer to join their ambitious team. In this role, you'll help develop a platform that enhances clinical trials, allowing for faster patient access to treatments. This position offers a flexible hybrid work arrangement with full onsite ...

AVP Trading Tool Developer Systematic & Credit Portfolios

A leading global finance firm seeks a motivated engineer to join its Tech team as a trading tool developer in London. This role focuses on collaborating with traders and product teams to enhance trading systems using Python and React, with significant opportunities for mentorship and professional growth. Candida ...

Staff Software Engineer — AI Product Builder (Remote First)

Burns Sheehan is looking for a Staff Software Engineer in London to join an exciting tech scale-up poised for significant growth in 2026. You will use cutting-edge technologies like Next.js, React, Typescript, Node, and Python to design and build products with a high level of autonomy. The role requires a produc ...

GenAI Full Stack Engineer Secure AI Solutions

Elanco is seeking a Software Engineer to join their Enterprise AI engineering team in Hook, UK. In this role, you will advance the company's technology stack by building and supporting innovative AI solutions. Responsibilities include collaborating with engineers, engaging in hands-on coding, and improving CI/CD ...

Senior Software Engineer I Software engineering London

Job Description Global payments are complex and ever-evolving. At Checkout our software engineers develop the next-generation payments technologies that enable our Merchants to boost their acceptance rates, cut processing costs, fight fraud, and create cutting edge technology that enables extraor ...

Senior Software Engineer Ground Software for Aircraft

A leading aerospace technology company in Uxbridge seeks a Senior Software Engineer to join their team responsible for developing state-of-the-art ground software for commercial aircraft. The ideal candidate will have at least 5 years of software development experience and expertise in Python, C#/.NET, and AWS. ...

Sr. Software Engineer to Design, develop, and maintain full stack web applications using Python, Django, React and Next.js for a software company

Our client is looking for a Sr. Software Engineer to Design, develop, and maintain full stack web applications using Python, Django, React and Next.js for a software company.Must Have's:6+ years as full stack developerStrong proficiency with React and modern Ja ...

Sr. Software Engineer to Design, develop, and maintain full stack web applications using Python, Django, React and Next.js for a software company

Our client is looking for a Sr. Software Engineer to Design, develop, and maintain full stack web applications using Python, Django, React and Next.js for a software company.Must Have's:6+ years as full stack developerStrong proficiency with React and modern Ja ...

Software Engineering Team Lead

Tech Lead – Python / Financial Modelling / AI - Pensions£650 – £750 per dayOutside IR356 Month ContractRemote (Occasional London Travel)OverviewI’m currently working with a leading financial services technology consultancy that is looking to bring in an experienced Tech Lead to suppor ...

Software Engineering Team Lead

Tech Lead – Python / Financial Modelling / AI - Pensions£650 – £750 per dayOutside IR356 Month ContractRemote (Occasional London Travel)OverviewI’m currently working with a leading financial services technology consultancy that is looking to bring in an experienced Tech Lead to suppor ...

Software Engineer AI, Next.js £80k

This range is provided by Oliver Bernard. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range Direct message the job poster from Oliver Bernard Principal Consultant at Oliver Bernard | Specialist in Scaling Software Engin ...

Full Stack Engineer (£75k £100k + Equity) at Aisy.ai

Job Title: Full Stack Engineer Salary: £75k–£100k + Equity Company Description: Aisy.ai - Seed-funded AI-native cybersecurity startup Job Description: You will join as a founding engineer building an AI engine that prioritizes cybersecurity threats th ...

Product Engineer (£110K–£170K + Equity) at Sektor

Job Title Product Engineer Salary £110K–£170K + Equity Company Description Sektor - Autonomous technology deployment platform Location London, UK Job Description Join a high-growth startup building the world’s first orchestration ...

Founding AI Engineer — Build Agentic Sustainability AI

A sustainability-focused tech startup is seeking a Founding Full Stack AI Engineer to help build agentic AI systems for sustainability data. The role involves designing and implementing complex AI systems that process unstructured data and engage with customers. Ideal candidates should have over 7 years of exper ...

Full Stack GCP Engineer

Senior Full Stack Engineer (GCP) – AI-Powered Market Intelligence Platform Are you a Full Stack Engineer who thrives on building scalable, data-driven platforms that solve real-world problems? Our client is transforming a global supply chain through AI and real-time market intellige ...

Full Stack CMS Engineer for Magnolia/ContentStack

MOO is looking for a Software Engineer (Magnolia/ContentStack FullStack) to join the Browse team in London. The ideal candidate will have strong experience with CMSs and web technologies, including Java, TypeScript, and NextJS. This role emphasizes collaboration and a passion for quality, where you will contribu ...

Senior Full Stack Engineer — Enterprise Platform

Antler in London is seeking an exceptional Fullstack Engineer to build the enterprise foundation of Lovable. This role requires extensive experience in building and shipping full-stack products, with a focus on multi-cloud deployment and integration with enterprise systems. Responsibilities include designing sys ...

Senior DevSec Engineer Remote, High Impact Security

A crypto-focused technology firm in Greater London seeks a Security Engineer responsible for overseeing platform security and quality assurance. You will conduct penetration tests, assess vulnerabilities, and manage security protocols across all products, including a non-custodial Web3 wallet. The ideal candidat ...

Senior Full Stack Engineer: Cloud Native Platform Lead

Comoro Ltd is seeking a Senior Full Stack Engineer to drive architectural excellence and ensure the delivery of critical features. You will work across React and Node.js/Python services, own CI/CD processes, and mentor the engineering team. Candidates should have 5+ years of experience with strong backend skills ...

Software Engineer

Software Engineer - Python + ReactSalary: CompetitiveLocation: Braintree, EssexWork Pattern: Hybrid Opportunity OverviewWe are partnering with an innovative technology company operating in the utilities sector. They are developing a cloud-n ...

Software Engineer

Software Engineer - Python + ReactSalary: CompetitiveLocation: Braintree, EssexWork Pattern: Hybrid Opportunity OverviewWe are partnering with an innovative technology company operating in the utilities sector. They are developing a cloud-n ...

Senior Software Developer, AI Engineering, London, COR7550

Job Description Is this the next step in your career Find out if you are the right candidate by reading through the complete overview below.Senior Software Developer, AI Engineering, London, COR7550 Are you a Software Engineer with a passion for AI and building scalable systems from the ...

Lead Fullstack Engineer — AI Driven Fintech Platform

Oliver Bernard is seeking a Lead Fullstack Engineer to work with an exceptional AI-driven fintech organization. This role offers the chance to engage with advanced distributed systems while focusing on both frontend and backend development. Ideal candidates will have substantial experience in TypeScript and Node ...

Python Engineer at a Global Private Equity Firm

Are you a Python Engineer in finance looking to work on greenfield projects? Read the overview of this opportunity to understand what skills, including and relevant soft skills and software package proficiencies, are required.This is an opportunity to join a global private equity firm th ...

Senior Backend Engineer Python Microservices, AI Driven

A leading insurance technology firm in the UK is seeking a skilled Senior Software Engineer to focus on backend development and cloud microservices. You will solve complex problems, develop clean and maintainable code, and work within a vibrant team. Ideal candidates will have strong programming skills, be resul ...

Senior Python Engineer Remote AI Testing & Docker

A leading AI project platform is seeking a Senior Python Developer to engage in project-based collaboration. The ideal candidate has extensive experience in functional testing, Docker, and Linux. This role offers fully remote work, flexible hours (20-30 hours per week), and competitive pay of up to $50/hour depe ...

Senior Backend Engineer Remote, Python & Azure SaaS

A technology firm is seeking a Senior Backend Engineer to lead the design and implementation of core backend services for an Azure-based SaaS platform. This role emphasizes the creation of robust REST APIs, optimization of workflows, and maintenance of cloud infrastructure. Ideal candidates will possess over 6 y ...

🚀 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 Software Engineer Fullstack Python React Jobs in United Kingdom Job Search Guide, Trends and Insights