Software Engineer Python Java Data 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

Quantitative Analyst Intern

About Keyrock Founded in 2017, Keyrock is a leading digital asset market maker with 200+ team members globally, representing 42 nationalities. We trade across more than 80 exchanges and run desks in market making, options, OTC and DeFi. We’re known for our tech-first approach, Rust‑based trading ...

Senior Analytics Consultant

iCrossing offers a range of employee benefits including flexible working, life assurance, a monthly wellbeing allowance, charity and study days, enhanced parental pay, and much more. Where we work iCrossing has a global presence, but this role is UK-based. You must have the Right to Work ...

Lead Full Stack Engineer (Backend Leaning)

Lead Full‑Stack Engineer (Backend-leaning) Who We Are:AND Digital are a tech company focused on accelerating digital delivery and dedicated to closing the digital skills gap. We’ve been helping organisations build better digital products and stronger digital teams since 2014 ...

Lead Full Stack Engineer (Backend Leaning)

Lead Full‑Stack Engineer (Backend-leaning) Who We Are:AND Digital are a tech company focused on accelerating digital delivery and dedicated to closing the digital skills gap. We’ve been helping organisations build better digital products and stronger digital teams since 2 ...

Lead Full Stack Engineer (Backend Leaning)

Lead Full‑Stack Engineer (Backend-leaning) Who We Are:AND Digital are a tech company focused on accelerating digital delivery and dedicated to closing the digital skills gap. We’ve been helping organisations build better digital products and stronger digital teams since 2 ...

Lead Full Stack Engineer (Backend Leaning)

Lead Full‑Stack Engineer (Backend-leaning) Who We Are:AND Digital are a tech company focused on accelerating digital delivery and dedicated to closing the digital skills gap. We’ve been helping organisations build better digital products and stronger digital teams since 2014 ...

Lead Full Stack Engineer (Backend Leaning)

Senior Full‑Stack/AI Engineer (Backend-leaning) Who We Are: AND Digital are a tech company focused on accelerating digital delivery and dedicated to closing the digital skills gap. We’ve been helping organisations build better digital products and stronger digital teams since 2014 ...

Mobile Engineer III (iOS)

Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our success.Why Join Us?</b ...

Mobile Engineer III (iOS)

Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our success.Why Join Us?</b ...

Senior Kotlin Engineer

About Lendable Lendable is on a mission to build the world’s best technology to help people get credit and save money. We’re building one of the world’s leading fintech companies and are off to a strong start: One of the UK’s newest unicorns with a team of just over 600 people <li ...

Senior Fullstack Engineer TechOps

Overview Octopus Energy started with a bold idea: to build Britain’s first truly digital energy supplier. By combining world-class tech with brilliant humans who care deeply about customers and driving the renewable energy transition, we became Britain’s largest energy supplier. Now, we’re scaling ...

Senior Fullstack Engineer TechOps

Overview Octopus Energy started with a bold idea: to build Britain’s first truly digital energy supplier. By combining world-class tech with brilliant humans who care deeply about customers and driving the renewable energy transition, we became Britain’s largest energy supplier. Now, we’re scaling ...

Senior Fullstack Engineer TechOps

Overview Octopus Energy started with a bold idea: to build Britain’s first truly digital energy supplier. By combining world-class tech with brilliant humans who care deeply about customers and driving the renewable energy transition, we became Britain’s largest energy supplier. Now, we’re scaling ...

IT Helpdesk Support contract

Direct message the job poster from E-Frontiers Senior Infrastructure Recruitment Consultant at E-Frontiers Ltd Key Responsibilities Provide first and second-line IT support to Front Office, Trading, and VIP users, both onsite and remotely. Manage and resolve inci ...

Sales Director (Telecoms)

Overview Our client is one of Europe's fastest-growing companies and provides open-source solutions and their own Linux-based operating system. They offer licensed enterprise software products, commercial support, managed services, consulting and training services to customers deploying open sou ...

Azure Integration Developer

Azure Integration Developer | Global Enterprise Technology Organisation | London We’re partnering with a global, high‑performing organisation currently modernising and scaling its cloud integration and API platform across international markets. As part of a wider digital tr ...

Azure Integration Developer

Azure Integration Developer | Global Enterprise Technology Organisation | London Please ensure you read the below overview and requirements for this employment opportunity completely.We’re partnering with a global, high‑performing organisation currently modernising and ...

Junior C# Engineer

Junior C# Developer Trading Systems £80,000 Plus Bonus + yearly Ski Trip A variety of soft skills and experience may be required for the following role Please ensure you check the overview below carefully.Quant Capital is urgently looking for a ...

Release Manager – Active SC, AWS

Release Manager – Active SC, AWSUp to £500 per day – Inside IR35Remote / Must be UK based6 monthsMy client is an instantly recognisable consultancy who require a Release Manager with Active SC clearance for an end client within the public sector.Key Requirements:Provenmercial experience working as a Release ...

Front End Developer Active SC

Front End Developer – Active SCUp to £550 per day – Inside IR35London / Remote6 monthsMy client is an instantly recognisable consultancy who require Front End Developers with Active SC Clearance to join a business-critical programme for an end client within the Public Sector.Key Requirements:Provenmercial ex ...

Test Lead

Job Title: Test Lead Job Type: Contract (1 position 9 months duration & 1 position 6 months duration) <span style ...

Front End Developer Active SC

Front End Developer – Active SCUp to £550 per day – Inside IR35London / Remote6 monthsMy client is an instantly recognisable consultancy who require Front End Developers with Active SC Clearance to join a business-critical programme for an end client within the Public Sector.Key Requirements:Provenmercial ex ...

Test Lead

Job Title: Test Lead Job Type: Contract (1 position 9 months duration & 1 position 6 months duration) <span style ...

Release Manager – Active SC, AWS

Release Manager – Active SC, AWSUp to £500 per day – Inside IR35Remote / Must be UK based6 monthsMy client is an instantly recognisable consultancy who require a Release Manager with Active SC clearance for an end client within the public sector.Key Requirements:Provenmercial experience working as a Release ...

Mid to Backend Developer in London Pontoon

Overview This is a job posted by our partner Jooble. Below is a snippet of the job description. To read the full text, please click on the Apply Now link. Salary £50,000 - 80,000 per year Requirements Extensive professional experience in backend development w ...

Android / App Developer / Dev for The Climate App!

Overview We're on a mission to create a global movement of climate action. We make climate action easy, fun & social. We are a global network of highly skilled developers, activists and professionals - all on a mission to help solve the greatest threat of humankind! We're making an enviro ...

Senior Engineer

The CompanyOur client is an award-winning construction, fit-out, and refurbishment contractor with a long-established reputation for delivering exceptional landmark projects across the UK and internationally. The business operates across sectors including commercial, hospitality, healthcare, education, arts ...

Senior Engineer

The CompanyOur client is an award-winning construction, fit-out, and refurbishment contractor with a long-established reputation for delivering exceptional landmark projects across the UK and internationally. The business operates across sectors including commercial, hospitality, healthcare, education, arts ...

Senior Mechanical Design Engineer

An excellent opportunity has arisen for an experienced Mechanical Design Engineer to join a well-established building services consultancy in their London or Kent office on a contract basis, operating outside IR35. This hybrid role involves working within a multidisciplinary building service ...

Senior Mechanical Design Engineer

An excellent opportunity has arisen for an experienced Mechanical Design Engineer to join a well-established building services consultancy in their London or Kent office on a contract basis, operating outside IR35. Make sure to read the full description below, and please apply immediately if you ar ...

Senior UI Engineer

The TP ICAP Group is a world leading provider of market infrastructure.Our purpose is to provide clients with access to global financial and commodities markets, improving price discovery, liquidity, and distribution of data, through responsible and innovative solutions.Through our ...

Senior UI Engineer

The TP ICAP Group is a world leading provider of market infrastructure.Our purpose is to provide clients with access to global financial and commodities markets, improving price discovery, liquidity, and distribution of data, through responsible and innovative solutions.Through our ...

Senior Cost Intelligence Analyst

Overview Become a vital member of our Complex Projects, Delivery Partner team, proudly taking on some of the world's most exciting and prestigious projects. Join us, and you'll be part of our genuinely collaborative environment, where everyone is supported to make the most of their talents. It's ...

Senior Cloud Solutions Engineer

UK CITIZENSHIP REQUIRED FOR THIS POSITION: Yes RELOCATION ASSISTANCE: No relocation assistance available CLEARANCE TYPE: UK-Highest Level of Government Clearance TRAVEL: Yes, 10% of the Time Your Opportunity to Define Possible Our Opportunity to Deliver the Nation’s Sec ...

AI Engineer

Overview At Solve Intelligence , we aren’t just using AI - we are building the proprietary algorithms that define the future of Intellectual Property. We have real paying users, massive traction, and a mission to build a billion-dollar company. ️ The Role: AI Engineer We ar ...

Fixed Income eTrading Connectivity – Senior Developer (VP)

Fixed Income eTrading Connectivity – Senior Developer (VP) About Citi Citi is a world‑leading global bank. We have approximately 200 million customer accounts and a presence in more than 160 countries and jurisdictions worldwide. We provide consumers, corporations, gover ...

Security Engineer

Snyk is the leader in secure AI software development, helping millions of developers develop fast and stay secure as AI transforms how software is built. Our AI-native Developer Security Platform integrates seamlessly into development and security workflows, making it easy to find, fix, and prevent vulnera ...

Platform Integration Engineer

About OLIX AI is growing faster than any technology in history and the explosion in demand has created a massive infrastructure gap; we can no longer build chips or power stations fast enough to keep up. The industry is still leaning on a ten-year-old hardware blueprint that has reached i ...

Security Engineer

Overview Snyk is the leader in secure AI software development, helping millions of developers develop fast and stay secure as AI transforms how software is built. Our AI-native Developer Security Platform integrates seamlessly into development and security workflows, making it easy to find, fix, a ...

2nd Line Support

Role: 2nd Line Support Engineer (Contract) Location: London, UK Day Rate: £125 - £200 per day (Inside IR35) Contract Role OverviewWe're looking for an experienced 2nd L ...

2nd Line Support

Role: 2nd Line Support Engineer (Contract) Location: London, UK Day Rate: £125 - £200 per day (Inside IR35) Contract Role OverviewWe're looking for an experienced 2nd L ...

Full Stack Engineer

Full Stack Software Engineer (C# / React) – Broadcast & Video Technology Location: London Area - Hybrid Full-Time Contract Rates: Negotiable We are looking for a versatile Full Stack Software Engineer to join our engineering team working on cutting‑edge solutions i ...

Senior Electrical Design Engineer

Position : Senior Electrical Design Engineer Employment Type : Permanent Working Environment : Office/Home Hybrid Working We work for UK and international clients, delivering medium sized infrastructure projects in areas such as water, transportation and mission ...

Test Engineer

Date Posted:2026-03-18Country:United KingdomLocation:Gloucester, South GloucestershirePosition Role Type:OnsiteRaytheon UK have a full time, permanent opportunity for a Test Engineer to join our teams in Gloucester, Manchester or London working fu ...

Test Engineer

Date Posted:2026-03-18Country:United KingdomLocation:Gloucester, South GloucestershirePosition Role Type:OnsiteRaytheon UK have a full time, permanent opportunity for a Test Engineer to join our teams in Gloucester, Manchester or London working fu ...

ML Engineer (Binding)

AI for drug design is limited by sparse and fragmented data. deepmirror is an AI-native drug design platform built around curated, non-public experimental molecule property measurements (potency, binding, ADMET) aggregated from patents, papers, and partners. We help chemistry teams choose the next best exp ...

Systems Development Manager

Overview Would you like to help implement innovative cloud computing solutions and solve the world’s most complex technical problems? Do you have a deep passion and desire to engineer and operate the world’s largest cloud computing infrastructure to provide a better world for future generations? ...

Research Engineer

AI for drug design is limited by sparse and fragmented data. deepmirror is an AI-native drug design platform built around curated, non-public experimental molecule property measurements (potency, binding, ADMET) aggregated from patents, papers, and partners. We help chemistry teams choose the next best exp ...

Research Scientist, Quantum Algorithms (Optimization)

We are seeking a Research Scientist to join our team in London, working on the development of quantum algorithms with a focus on solving optimization problems. This role offers the opportunity to contribute to cutting‑edge research aimed at advancing the capabilities of quantum computers and exploring thei ...

Applied AI ML Senior Associate – LLM Suite Engineering

Job Description Help shape how intelligent systems are built and delivered at JPMorgan Chase. In this role, you’ll contribute to the LLM Suite platform by building AI/ML and agentic capabilities that are secure, reliable, and ready for production. You’ll collaborate closely with senior engineers, ...

🚀 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

    Software Engineer Python Java Data Jobs in London Job Search Guide, Trends and Insights