Lead Software Engineer Python Java 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 Java Developer Fixed Income Algo Technology, VP

For additional information, please review .***Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advance ...

Senior Java Developer Fixed Income Algo Technology, VP

For additional information, please review .***Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advance ...

Senior Backend Software Engineer in London Plexus Resource Solutions Ltd

Salary £100,000 - 100,000 per year Requirements We require proficiency in Python and SQL, along with strong experience in Python web frameworks such as Django, FastAPI, and Flask. Applicants should have a minimum of 3 years of professional software engineering experience... ...

Senior Backend Software Engineer in London Plexus Resource Solutions Ltd

Salary £100,000 - 100,000 per year Requirements We require proficiency in Python and SQL, along with strong experience in Python web frameworks such as Django, FastAPI, and Flask. Applicants should have a minimum of 3 years of professional software engineering experience... ...

Staff Platform Engineer

Your Impact The Staff Software Engineer (Platform) leads large-scale projects and is a key contributor to their group's success. They are involved in long-term strategic planning, mentor senior engineers, and are influential in technical decision-making across multiple teams or a department. They ...

Staff Platform Engineer

Your Impact The Staff Software Engineer (Platform) leads large-scale projects and is a key contributor to their group's success. They are involved in long-term strategic planning, mentor senior engineers, and are influential in technical decision-making across multiple teams or a department. They ...

12 Month Internship FX IT Developer

Job descriptionBusiness typeTypes of Jobs - IT, Digital et Data Job title12 Month Internship - FX IT Developer Contract typeInternship/Trainee Term (in months)12 Months ...

12 Month Internship FX IT Developer

Job descriptionBusiness typeTypes of Jobs - IT, Digital et Data Job title12 Month Internship - FX IT Developer Contract typeInternship/Trainee Term (in months)12 Months ...

Technical Lead

Have you led engineering teams technically? Do you love combining exciting technical challenges with positive impact? ♻ Technical Lead – Tech for Good ♻ Up to £130k + bonus + shares + benefits </ ...

Lead Actuary – Predictive Modelling – 29562

To actively support the Head of Pricing in delivering the development and recalibration of pricing tools, with a focus on predictive modelling. Location: London Category: Non-life Actuarial Type: Permanent Key Duties (Including but n ...

Forward Deployed Engineer High Profile AI Scale Up [Dubai based]

Forward Deployed Engineer - High Profile AI Scale-Up (Relocation to Dubai required) About the Company We are working with a high profile, AI Scale-Up focused on building advanced AI-driven software for enterprise environments. The approach centres on developing highly customised s ...

DevOps Engineer (National Security)

DevOps Engineer (National Security) Location: Opportunities available across all compass pointsHybrid: Secure-site working patterns vary by programmeSalary: £60,000 – £90,000 depending on experience and SFIA gradingClearance: Active DV / eDV clearance preferred The O ...

Machine Learning Engineer Spacetime UK

About Aalyria: Aalyria is a leading technology company that supplies laser communications technology and temporospatial software‑defined networking platforms to the aerospace industry. With technology acquired from Google, Aalyria is at the forefront of innovation in satellite and airborne mesh n ...

Machine Learning Engineer Spacetime UK

About Aalyria: Aalyria is a leading technology company that supplies laser communications technology and temporospatial software‑defined networking platforms to the aerospace industry. With technology acquired from Google, Aalyria is at the forefront of innovation in satellite and airborne mesh n ...

Senior Machine Learning Engineer

About the roleAs a Senior Machine Learning Engineer, we’ll look to you to lead development and deployment of cutting-edge AI systems for our diverse clients. You’ll design, build, and deploy scalable, production-grade ML software and infrastructure that meets rigorous operational and ethi ...

Senior Machine Learning Engineer

About the roleAs a Senior Machine Learning Engineer, we’ll look to you to lead development and deployment of cutting-edge AI systems for our diverse clients. You’ll design, build, and deploy scalable, production-grade ML software and infrastructure that meets rigorous operational and ethi ...

Junior QA Engineer

Location: Hybrid working (1-2 days Becrypt Head Office/Home Working)Responsible to: Becrypt Enterprise Management Team LeadJob Purpose: As a Junior QA Engineer you will work in a great atmosphere on stimulating projects with other talented QA engineers. We will need you to provide high quality ma ...

Quant Dev: Multi Asset Analytics, London (Flexible)

LegalAndGeneral is seeking a highly skilled Quantitative Developer in London. The ideal candidate will design and develop Python-based services to enhance multi-asset investment capabilities. Applicants should possess strong Python and SQL skills, have experience with software engineering practices, and be able ...

Quant Dev: Multi Asset Analytics, London (Flexible)

LegalAndGeneral is seeking a highly skilled Quantitative Developer in London. The ideal candidate will design and develop Python-based services to enhance multi-asset investment capabilities. Applicants should possess strong Python and SQL skills, have experience with software engineering practices, and be able ...

Cloud AI Engineer for Large Scale Scientific Models

GSK is seeking Software Engineers for their AI for Science team in London. In this role, you'll design scalable infrastructure and deliver high-performance, data-driven software solutions that enable scientific research. Responsibilities include developing AI/ML pipelines and maintaining cloud-native architectur ...

Cloud AI Engineer for Large Scale Scientific Models

GSK is seeking Software Engineers for their AI for Science team in London. In this role, you'll design scalable infrastructure and deliver high-performance, data-driven software solutions that enable scientific research. Responsibilities include developing AI/ML pipelines and maintaining cloud-native architectur ...

Data Engineer (Databricks) SC Clearance Required

Data Engineer - Databricks & Big Data Pipelines (SC Cleared is required for this role)Location: UK only remote is possibleWorking Mode: remoteRate: £450-550 per day inside IR35Description:We're looking for a Senior Data Engineer - Databricks & B ...

Data Engineer (Databricks) SC Clearance Required

Data Engineer - Databricks & Big Data Pipelines (SC Cleared is required for this role)Location: UK only remote is possibleWorking Mode: remoteRate: £450-550 per day inside IR35Description:We're looking for a Senior Data Engineer - Databricks & B ...

Senior Applied Scientist, Insights, Prime Video

Come build the future of entertainment with us. Are you interested in shaping the future of movies and television? Do you want to define the next generation of how and what Amazon customers are watching? Prime Video is a premium streaming service that offers customers a vast collection of TV shows ...

Systems Architect / Engineer

Job Description:Job Title Systems Architect / EngineerLocation LondonCorporate Title Vice PresidentYou will be joining the Anti-Financial Crime (AFC) Technology department as part of a multi-skilled agile team dedicated to rolling out sophisticated automation that drives Deutsche Bank’s critical control infrastr ...

Senior Lead Architect / Tech Program Manager

Join us to make a meaningful impact on how we build and operate resilient applications and infrastructure. You’ll work with talented engineers and senior stakeholders, influencing the design and execution of critical operational platforms. This is your opportunity to grow your career, collaborate across teams ...

Senior Lead Architect / Tech Program Manager

Join us to make a meaningful impact on how we build and operate resilient applications and infrastructure. You’ll work with talented engineers and senior stakeholders, influencing the design and execution of critical operational platforms. This is your opportunity to grow your career, collaborate across teams ...

Data Engineer Investment Platform

Data Engineer - Investment Platform £90k–£140k + bonus + benefits Hybrid | Central London There's a quiet data problem at the heart of private markets and a London fintech is building the infrastructure to solve it. Every PE fund, credit strategy and infrastru ...

AI Engineer

AI Engineer – Up to £115,000 – London Hybrid (2 days a week) Want to make an application Make sure your CV is up to date, then read the following job specs carefully before applying.A high-impact AI Engineer hire inside a fintech business building production-grade AI pr ...

Legal and Product Engineer

Base Pay Range $100,000.00/yr - $220,000.00/yr At Solve Intelligence, we’re building the AI-powered infrastructure for the global Intellectual Property landscape. We need a rare hybrid – a Legal and Product Engineer who sits at the exact intersection of patent law and AI innovation to ens ...

Software Engineering Coach: Flexible (TDD, Kotlin + More)

Important Note Right now we’re prioritising coaches who are expert in PostgreSQL, React Native, or Leadership, Communication and Management (in the context of software teams). If you have expertise in other technologies, then please do still apply. In this case, we may ask to keep ...

Product Engineer at Zavopay.com

This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers. She will pick the best candidates from Jack's network The next step is speak to Jack. Job Title: Product Engineer Company Description: Zavopay.com - YC-backed ...

Senior Manager, Forward Deployed AI Engineer

London, United Kingdom Baringa is a global consulting firm that partners with leaders to drive change and create value. With deep industry expertise, and enabled by advanced technology, the firm helps clients to deliver with greater confidence and certainty. With over 2,000 people across the UK, Eur ...

Senior Backend Engineer, Subscriptions Platform

Spotify AB is looking for a Backend Engineer in London to design and run scalable Java services for their merchandising platform. The role focuses on building systems to optimize subscription experiences for over 700 million users. Collaboration with cross-functional teams is vital, with a clear emphasis on c ...

Network Automation Engineer (Cisco/Meraki)

Senior Credit Controller & Reinsurance Accounting Technician Our client is looking for a Senior Credit Controller. Reinsurance Accounting Technician to £50,000. We are looking for a graduate with a Degree in Accounting. Our client is a Global Financial Markets Trading Comp ...

Lead, Engineering Practices

Lead, Engineering Practices page is loaded## Lead, Engineering Practiceslocations: GBR-London-10 Paternoster Squaretime type: Full timeposted on: Posted Todayjob requisition id: R LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We a ...

Network Automation Engineer (Cisco/Meraki)

Senior Credit Controller & Reinsurance Accounting TechnicianOur client is looking for a Senior Credit Controller.Reinsurance Accounting Technician to £50,000.We are looking for a graduate with a Degree in Accounting.Our client is a Global Financial Markets Tr ...

Principal RAM (Reliability, Availability & Maintainability) Engineer

Principal RAM (Reliability, Availability & Maintainability) Engineer Apply for the Principal RAM (Reliability, Availability & Maintainability) Engineer role at Genesis. About The Job This role will primarily undertake reliability engineering activities under the direction/superv ...

Information Security Engineer

Palantir builds the world’s leading software for data-driven decisions and operations. By bringing the right data to the people who need it, our platforms empower our partners to develop lifesaving drugs, forecast supply chain disruptions, locate missing children, and more. The Role As an ...

Information Security Engineer

Palantir builds the world’s leading software for data-driven decisions and operations. By bringing the right data to the people who need it, our platforms empower our partners to develop lifesaving drugs, forecast supply chain disruptions, locate missing children, and more. The Role As an ...

Senior AI Architect for Generative & Multi Modal Systems

A leading technology consulting firm in London seeks a Lead AI Engineer (Principal Consultant) to architect and deploy cutting-edge AI systems across the financial services sector. In this hybrid role, you will utilize your expertise in AI/ML and software development to lead teams and drive impactful outcomes. T ...

Lead Mambu Integration Architect – Savings Focus

A financial services company in Greater London is seeking a highly skilled Lead Engineer to lead the integration of Mambu's core banking platform, particularly for Savings products. The ideal candidate will have over 7 years of experience in software engineering and at least 3 years focused on Mambu integration, ...

Principal C++ Architect Cloud Video Framework

A leading sports technology company is seeking a Principal Software Engineer to lead the development of cutting-edge cloud video services. You will own the technical roadmap for core C++ frameworks, ensuring performance and accuracy under high-pressure environments. The ideal candidate has extensive experience i ...

Lead, Engineering Practices

Lead, Engineering Practices page is loaded## Lead, Engineering Practiceslocations: GBR-London-10 Paternoster Squaretime type: Full timeposted on: Posted Todayjob requisition id: R0117172LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business ...

Engineering Manager (Front end)

Description We are seeking a passionate Software Engineering Manager with a strong background in modern frontend engineering , particularly React, Next.js, and TypeScript , to provide technical leadership and operate with excellence. Creative, curious, and confident, you will ...

Senior Solution Architect

In a world with so many digital payment options, Alipay+ brings mobile payment technology and marketing tools together for simplicity and success. Known as borderless payment, Alipay+ is accepted by global merchants online and in-store across over 55 countries and regions for convenient payment at ...

DevOps Engineer

Company Overview: ANRA Technologies is a global leader in airspace, mission, and traffic management software (UTM/ATM/AAM), powering the safe integration of uncrewed and autonomous aircraft into global airspace. Our award-winning SaaS platforms are trusted by Air Navigation Ser ...

Data Engineer Investment Platform

Data Engineer - Investment Platform £90k–£140k + bonus + benefits Hybrid | Central London There's a quiet data problem at the heart of private markets and a London fintech is building the infrastructure to solve it. Every PE fund, credit strategy and infrastru ...

Cloud Engineers

Position Description At CGI, we deliver secure, mission‑critical systems that keep the nation safe while enabling innovation across some of the UK’s most vital sectors. As a Cloud Engineer, you will design, build, and manage cutting‑edge cloud platforms, applying your expertise to deliver scalabl ...

Quantitative Trading & Research Rates Quantitative Developer Vice President

Job Description Join a collaborative, fast-paced team where your code powers systematic trading in global Rates markets. You will help transform research into robust, production-grade strategies and platforms. Work closely with quantitative researchers and traders to design, build and evolve exec ...

🚀 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

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