2,024,900+ Full Stack Software Engineer Javascript React Elixir Jobs in UK — Top Companies Hiring June 2026

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

Staff Product Engineer Python London

Job Description Staff Product Engineer | London Hybrid / Remote | AI x FinTech | Python, AI Workflows, Distributed Systems | £120k–£200k + EquityA VC-backed AI company is rebuilding how accounting work gets done, using agentic workflows and AI automation to eliminate the ...

Software Developer Prime Services

About Marex Marex Group plc (NASDAQ: MRX) is a diversified global financial services platform providing essential liquidity, market access and infrastructure services to clients across energy, commodities and financial markets. The group provides comprehensive breadth a ...

Research Engineer, Machine Learning (RL Velocity)

About the role The RL Velocity team owns the efficiency and reliability of our RL Science stack - the infrastructure, tooling, and systems that let researchers iterate quickly on training runs. As a Research Engineer on the team, you'll build and improve the core platform that underpins how we do ...

Research Engineer, Machine Learning (RL Velocity)

About the role The RL Velocity team owns the efficiency and reliability of our RL Science stack - the infrastructure, tooling, and systems that let researchers iterate quickly on training runs. As a Research Engineer on the team, you'll build and improve the core platform that underpins how we do ...

AI Developer Tooling Engineer at Fanvue.com

Job Title: AI Developer Tooling Engineer Company Description: Fanvue.com - Series A AI-powered creator platform with $100M+ ARR Job Description: Join Fanvue to lead the integration of AI across our engineering organization. You will own the AI-assisted development st ...

Software Project Manager

Company: Planet Education Networks (PEN Group) Job Role: Software Project Manager Salary Range: £43,000 - £48,000 Per Annum Employment Type: Full-Time Working Days & Hours: Monday to Friday, 9am-5pm Location: On-Site, Canary Wharf ...

Software Project Manager

Company: Planet Education Networks (PEN Group) Job Role: Software Project Manager Salary Range: £43,000 - £48,000 Per Annum Employment Type: Full-Time Working Days & Hours: Monday to Friday, 9am-5pm Location: On-Site, Canary Wharf ...

Software Project Manager

Company: Planet Education Networks (PEN Group) Job Role: Software Project Manager Salary Range: £43,000 - £48,000 Per Annum Employment Type: Full-Time Working Days & Hours: Monday to Friday, 9am-5pm Location: On-Site, Canary Wharf ...

Software Project Manager

Company: Planet Education Networks (PEN Group) Job Role: Software Project Manager Salary Range: £43,000 - £48,000 Per Annum Employment Type: Full-Time Working Days & Hours: Monday to Friday, 9am-5pm Location: On-Site, Canary Wharf ...

Senior Python Developer

Get AI-powered advice on this job and more exclusive features. This range is provided by Tech4. 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 Tech4 Senior Python Deve ...

Front End Developer

Role: Front-End Developer Location: Nottingham Working Arrangement: Hybrid | 35-hour week Salary: Up to £55k I’ll keep this straightforward. I’m working with a genuinely solid software business that builds products used at scale. This ...

Front End Developer

Role: Front-End Developer Location: Nottingham Working Arrangement: Hybrid 35‑hour week Salary: Up to £55k I ll keep this straightforward. I m working with a genuinely solid software business that builds products used at scale. This is ...

Engineering Manager, Managed Services (Hybrid UK)

CrowdStrike Holdings, Inc. is looking for a Manager, Engineering - Managed Services to lead a cross-discipline team in London. This hybrid role requires collaboration with various stakeholders to develop technical roadmaps and ensure high code quality. Ideal candidates will have 8+ years in software development, ...

Senior Solution Architect: Endur ETRM Upgrade (Azure)

Eaglecliff Recruitment is seeking a Full Stack Solution Architect to enhance IT systems within a global Energy company. This role focuses on integrating systems with a new ETRM platform for Energy Trading, requiring hands-on architecture experience. Responsibilities include leading architectural design ...

Junior Software Developers Java, C#, Python London in London Vantage Point

Junior Software Developer – Java, C#, Python (London) Location: London, United Kingdom Posted: 9 months ago Responsibilities Write and maintain code for innovative applications and systems. Tech Stack Java C# Pyth ...

Software Developer in Test (SDET)

You will be leading the testing in a brand new team of 4 engineers plus a product manager. You will be working on one of our core transformation projects which involves rewriting and rearchitecting one of our core products without causing downtime or interruptions for our customers. You will ...

Test Engineer

MCS Group is seeking a Software Test Engineer to join one of their closest clients, a fast-growing Insurtech firm. With huge investment onboard in 2025, this firm's technology function is planning to scale by over 50% in the first half of 2026 and this will include it's quality assurance division scalin ...

Senior Backend Engineer (Java)

This position offers you the opportunity to join a fast-growing technology organization that is redefining productivity paradigms in the software engineering industry. If you are passionate about technology and want to learn about new trends that are shaping human behavior, this opportunity is for you. </p ...

Senior Software Developer

Visa Cash App Racing Bulls F1 Team is one of two Red Bull-owned F1 teams. Today’s Formula 1 calls for a high level of specialist skills in every area. At Visa Cash App Racing Bulls F1 Team we strongly believe that every member of our staff can and should lead innovation and continuous improvement in s ...

VCARB F1 Team Senior Software Developer

Visa Cash App Racing Bulls F1 Team is one of two Red Bull-owned F1 teams.Today’s Formula 1 calls for a high level of specialist skills in every area. At Visa Cash App Racing Bulls F1 Team we strongly believe that every member of our staff can and should lead innovation and continuous improvement in ...

Mid Level Shopify Frontend Engineer (New Builds)

About Swanky Swanky is a Shopify Platinum Partner agency. We design, build and grow Shopify Plus stores for brands across the UK, Europe and beyond. Our work spans new builds, complex platform migrations, and ongoing optimisation for established merchants. About the Role You’ll ...

ML & GPU Performance Engineer

Minimum qualifications: Bachelor's degree or equivalent practical experience. 5 years of experience with software development in one or more programming languages, and with data structures/algorithms. 3 years of experience testing, maintaining, or launching software products, ...

Machine Learning GPU Performance Engineer

Minimum qualifications: Bachelor's degree or equivalent practical experience. 5 years of experience with software development in one or more programming languages, and with data structures/algorithms. 3 years of experience testing, maintaining, or launching software products, ...

AI Driven API Web Developer Intern

Internwise is seeking a motivated intern for the position of API Web Developer with a focus on AI integration. This internship offers hands-on experience in developing APIs, working closely with a dynamic team to implement cutting-edge web applications. The candidate should be pursuing or have complete ...

DevOps Engineers

Platform Support EngineerCentral London (Hybrid – One day in the office every two weeks)£50,000 per annumOur client is looking for a Platform Support Engineer to join their growing technology team. This is an excellent opportunity for someone ...

DevOps Engineers

Platform Support Engineer Central London (Hybrid - One day in the office every two weeks) £50,000 per annum Our client is looking for a Platform Support Engineer to join their growing technology team. This is an excellent opportunity for someone from a Linux Systems Administration ...

AI Engineer Summer Internship 2026

Job Type: Internship Start Date: First week of July 2026 ABOUT LEC AI LEC AI is the AI division of London Export Corporation, a private group founded in 1951. The group includes LEC Robotics (sole UK distributor for global robotics brands), LEC Beverages (sole UK distributor of Ts ...

Product Engineer (£110K – £200K + Equity) at Incident

Job Title Product Engineer Salary £110K – £200K + Equity Company Description Incident.io is a $100M-funded Series B startup backed by Index Ventures and Insight Partners, building the leading AI incident response platform for teams like Netflix ...

Technical Customer Enablement Manager (AI & Cyber Security)

Technical Customer Enablement Manager (AI & Cyber Security) Location: London, UK (Hybrid – 3 Days Onsite) Employment Type: Full-Time, Permanent Salary: Competitive + Benefits About the Role We are seeking a highly motivated ...

Principal Software Architect Bristol, UK

Graphcore is one of the world’s leading innovators in Artificial Intelligence compute. It is developing hardware, software and systems infrastructure that will unlock the next generation of AI breakthroughs and power the widespread adoption of AI solutions across every industry. As part of the SoftB ...

Principal Software Architect

About Graphcore Graphcore is one of the world’s leading innovators in Artificial Intelligence compute. It is developing hardware, software and systems infrastructure that will unlock the next generation of AI breakthroughs and power the widespread adoption of AI solutions across eve ...

Principal Software Architect

About GraphcoreGraphcore is one of the world’s leading innovators in Artificial Intelligence compute.It is developing hardware, software and systems infrastructure that will unlock the next generation of AI breakthroughs and power the widespread adoption of AI solutions across ever ...

Infrastructure Test Automation Engineers

Infrastructure Test Automation Engineer Position Description CGI was recognised in the Sunday Times Best Places to Work List 2025 and has been named one of the ‘World’s Best Employers’ by Forbes magazine. We offer a competitive salary, excellent pension, private healthcare, plus a share s ...

Data Scientist

We are looking to hire a Data Scientist role for one of our renowned IT client in Waterside,UK. This is a contract role and hybrid work opportunity. Role purpose This role is responsible for developing industrialized optimisation and machine learning models as part of a full-stack product ...

Data Scientist

We are looking to hire a Data Scientist role for one of our renowned IT client in Waterside,UK. This is a contract role and hybrid work opportunity. Role purpose This role is responsible for developing industrialized optimisation and machine learning models as part of a full-stack product ...

Lead Desktop Engineer (5 10 Years) Up to £150k + Bonus Elite Buy Side Trading Firm

Lead Desktop Engineer (5-10 Years) - Up to £150k + Bonus - Elite Buy-Side Trading Firm Direct message the job poster from Hunter Bond Building some of the world’s best engineering teams | EMEA, APAC & AMER @ Hunter Bond Job Title: Lead Desktop Engineer Client: ...

Senior Python Engineer

Senior Python Engineer - Financial Services You will join a financial services business reimagining their technology stack to be cloud-native on AWS, with modern front ends and Python-based services at the core. Great engineering culture matters as well as writing clean, well-designed cod ...

Engineering Manager, MAAS

Overview Canonical is a leading provider of open source software and operating systems to the global enterprise and technology markets. Our platform, Ubuntu, is widely used in breakthrough enterprise initiatives such as public cloud, data science, AI, engineering innovation and IoT. Our customers ...

Staff Design Engineer, UK

Hi I’m Abhik, Ashby’s Co-Founder and VP of Engineering. As someone who could design and build software, this position is close to my heart. I always felt I had a unique perspective because I could play with design ideas and iterate in code. My prototypes used actual logic and data. My changes cascaded thro ...

C++ Developer

C++ Developer – Smart Order Routing Ready to build the fastest paths to market? If you're a performance-obsessed C++ engineer with deep experience in low latency trading systems and smart order routing, this is the challenge you've been looking for. This is an opportunity ...

Senior Front End Developer — 12 Month Hybrid Leeds/Newcastle

Senior Front-End Developer - 12 months - Contract Rate: £675 per dayIR35 : InsideLocation : 3 days a week in Newcastle or LeedsDuration : 12 monthsThe role : A leading Central ...

Senior Front End Developer 12 months Contract

Senior Front-End Developer - 12 months - Contract Rate: £675 per dayIR35 : InsideLocation : 3 days a week in Newcastle or LeedsDuration : 12 monthsThe role : A leading Central ...

Senior Web Application Developer

Senior Web Application Developer Job ID: Location: London, United Kingdom – Permanent position at our Hammersmith office, requiring four days of on‑site attendance per week. Employment Type: Full time About the Role & Team At The Walt Disney Company, we believe that ...

Simulation Engineer Autonomous & Soft Robotic Systems

Simulation Engineer – Autonomous & Soft Robotic Systems Join Botz Innovation as a Simulation Engineer. The role focuses on building physically realistic simulation tools for soft and hybrid robotic systems to support fast, reliable iteration from concept to evaluation. Your Role <p ...

Senior Site Reliability Engineer

This range is provided by Maxwell Bond. 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 Maxwell Bond Delivery Team Lead- Client Services @ Maxwell Bond | Strategic Partner in Talent ...

Frontend Engineer Real Time AI Retail UI

A stealth-mode AI company in the UK is seeking a Frontend Engineer to design and build engaging web experiences for retail. You will work collaboratively with cross-functional teams to implement reactive interfaces and contribute to API design. The successful candidate will possess strong UX and web framework ex ...

Cybersecurity Backend Engineer (Java/JS/Python) Cloud

MCS Group is seeking multiple Software Engineers to support a global technology organization's Cyber Security Engineering teams in Belfast. This opportunity involves designing and developing scalable backend services, APIs, and cloud-native applications in a collaborative environment. Candidates should have 3+ y ...

Systems Developer ERP & Integrations

Invertek Drives Ltd, located in Welshpool, is seeking a Junior Systems Developer to assist in the development and support of custom software applications. The role involves working closely with users to gather requirements and translate them into effective technical solutions. Candidates should possess ...

Lead Integrations & API Architect

A pioneering AI technology company in Cambridge is seeking a Head of Integrations to lead technical aspects related to system integration. The ideal candidate will possess a deep technical background in software development and can engage with clients effectively. Responsibilities include overseeing integration ...

🚀 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

    Buffering Video...

    Full Stack Software Engineer Javascript React Elixir Jobs in United Kingdom Job Search Guide, Trends and Insights