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

Lead Software Engineer, back end (L5/6)

What you’ll do at Synthesia: You will work end-to-end, contributing to our client application written in React and our monolithic backend written in Python, and managing the safe release of your features to our customer base. You will have sole ownership of projects that span mont ...

Staff Software Engineer: Store Operations Lead & Architect

A leading retail company in the UK is looking for a Staff Software Engineer to join their Store Operations team. You will be responsible for developing and optimizing applications that manage stock operations while providing technical leadership on projects. The ideal candidate has strong expertise in Java, clou ...

Senior Lead Software Engineering AI/ML Engineer

Job Description Join us to shape the future of AI/ML data platforms, where your expertise will help create resilient and market-leading solutions. You will have the opportunity to collaborate with innovators across our global network, driving strategic change and mentoring others. We value y ...

Lead Software Engineer, Creature FX & Crowd Pipelines

DNEG is looking for a Software Team Lead to join their team in Greater London. This role involves balancing hands-on development with leadership while driving high-quality tool delivery in the VFX and Feature Animation sectors. Candidates should have a degree in Computer Science or Engineering, substantial C++ a ...

Lead Software Engineer Agentic Gen AI / NLP

Are you passionate about building the next generation of AI solutions? Join us to lead and mentor a team of talented engineers, drive innovation in generative and agentic AI, and deliver impactful, scalable technology for Risk Technology. You’ll collaborate with cross-functional partners and play a key role i ...

Senior Lead Software Engineering AI/ML Engineer

Join us to shape the future of AI/ML data platforms, where your expertise will help create resilient and market-leading solutions. You will have the opportunity to collaborate with innovators across our global network, driving strategic change and mentoring others. We value your skills in solving complex chal ...

Senior Lead Software Engineer Cloud & API Architecture

Are you ready to shape the future of technology at a leading global financial institution? Join us and use your expertise to drive impactful solutions that power our business and support our clients worldwide. Here, you’ll collaborate with talented professionals, grow your skills, and make a real difference. ...

Sr Lead Software Engineer UI Developer React

Be an integral part of an agile team that's constantly pushing the envelope to enhance, build, and deliver top-notch technology products.As a Senior Lead Software Engineer at JPMorganChase within the Equities Sales and Trading Technology, you are an integral part of an agile team that works to enhance, ...

Staff / Senior Lead Software Engineer Backend Platform

Behind every investment is a person with ambitions, motivations and values. While we know that every client is unique, they come to . Morgan Personal Investing for the same reason: our straightforward and transparent approach to investing, and the trust that 150 years of . Morgan heritage brings. . Mor ...

Senior Lead Software Engineer Cloud Platform Engineering

Out of the successful launch of Chase in 2021, we're a new team, with a new mission. We're creating products that solve real world problems and put customers at the center - all in an environment that nurtures skills and helps you realize your potential. Our team is key to our success. We're people-first. We ...

Lead Software Engineer Full Stack AI/ML

As a Full Stack Software Engineer at JPMorgan Chase within the Corporate Sector - Data Center Services team, you would be an integral part of an agile team that works to enhance, build, and deliver trusted market-leading technology products in a secure, stable, and scalable way. As a core technical contributo ...

Lead Software Engineer Margin Technology Vice President

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 advanced AI to helping shape global markets, we bu ...

Senior Lead Software Engineer Cloud & API Architecture

Are you ready to shape the future of technology at a leading global financial institution? Join us and use your expertise to drive impactful solutions that power our business and support our clients worldwide. Here, you’ll collaborate with talented professionals, grow your skills, and make a real difference. ...

Sr Lead Software Engineer UI Developer React

Be an integral part of an agile team that's constantly pushing the envelope to enhance, build, and deliver top-notch technology products.As a Senior Lead Software Engineer at JPMorganChase within the Equities Sales and Trading Technology, you are an integral part of an agile team that works to enhance, ...

Staff / Senior Lead Software Engineer Backend Platform

Behind every investment is a person with ambitions, motivations and values. While we know that every client is unique, they come to . Morgan Personal Investing for the same reason: our straightforward and transparent approach to investing, and the trust that 150 years of . Morgan heritage brings. . Mor ...

Senior Lead Software Engineer Cloud Platform Engineering

Out of the successful launch of Chase in 2021, we're a new team, with a new mission. We're creating products that solve real world problems and put customers at the center - all in an environment that nurtures skills and helps you realize your potential. Our team is key to our success. We're people-first. We ...

Lead Software Engineer Agentic Gen AI / NLP

Are you passionate about building the next generation of AI solutions? Join us to lead and mentor a team of talented engineers, drive innovation in generative and agentic AI, and deliver impactful, scalable technology for Risk Technology. You’ll collaborate with cross-functional partners and play a key role i ...

Senior Lead Software Engineering AI/ML Engineer

Join us to shape the future of AI/ML data platforms, where your expertise will help create resilient and market-leading solutions. You will have the opportunity to collaborate with innovators across our global network, driving strategic change and mentoring others. We value your skills in solving complex chal ...

Lead Software Engineer Margin Technology Vice President

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 advanced AI to helping shape global markets, we bu ...

Lead Software Engineer Full Stack AI/ML

As a Full Stack Software Engineer at JPMorgan Chase within the Corporate Sector - Data Center Services team, you would be an integral part of an agile team that works to enhance, build, and deliver trusted market-leading technology products in a secure, stable, and scalable way. As a core technical contributo ...

Machine Learning Engineer

London, UK – 3+ Years | Full-Time We are looking for a highly capable machine learning engineer to optimize our machine learning systems. You will be evaluating existing machine learning (ML) processes, performing statistical analysis to resolve data set problems, and enhancing the accuracy of our ...

Forward Deployed Engineer

Forward Deployed Engineer (AI) | Up to £145k + Bonus | London (Hybrid, 2–3 days onsite) This is a well-established Data & AI consultancy working at the point where models meet production. They partner with some of the most advanced AI organisations globally and are brought in when things need to a ...

Software Engineer – Equity Derivatives Pricing & Risk System.

Software Engineer – Equity Derivatives Pricing & Risk SystemWe are seeking a highly skilled and motivated Java Developer with a strong background in Equity Derivatives to join our team in London. In this role, you will play a pivotal part in building and enhancing Equity Volatility Risk and P&L system that su ...

Software Engineer – Equity Derivatives Pricing & Risk System.

Software Engineer – Equity Derivatives Pricing & Risk SystemWe are seeking a highly skilled and motivated Java Developer with a strong background in Equity Derivatives to join our team in London. In this role, you will play a pivotal part in building and enhancing Equity Volatility Risk and P&L system that su ...

Software Engineer (C++)

C++ Software Engineer - Outside IR35 Contract London, UK Long-Term Engagement on a Rolling Contract Hybrid Working Up to £750 per day (Outside IR35) We have partnered with a leading Technology Firm who are looking to add a Software Engineer with ...

C++ Software Engineer Outside IR35 Up to £700 per day

C++ Software Engineer – Outside IR35 Contract London, UK Long‑Term Engagement on a Rolling Contract Hybrid Working We have partnered with a leading Technology Firm who are looking to add a Software Engineer with skills on C++ to their Market Data team! The successful ...

Principal Software Engineer

Principal Software Engineer (Go/Systems) Series B Scale Up Life Sciences Is your CV ready If so, and you are confident this is the role for you, make sure to apply asap.Salary : £170,000 plus package Location : Angel (3 days per ...

Senior Tech Lead Backend Services & Cloud

A global financial services company is seeking a Lead Software Development Engineer in London to oversee technical design and implementation within a hybrid working model. You will drive project delivery, collaborate with cross-functional teams, and champion quality engineering practices. Exceptional programming ...

Senior Java Tech Lead: Cloud Microservices & FinTech

A leading financial institution in London is seeking a Senior Lead Software Engineer to deliver innovative cloud-native solutions. The ideal candidate will have significant experience in Java, be proficient with microservice architecture, and thrive in an agile environment. You'll be contributing to diverse proj ...

Senior Java Backend Engineer — Real Time Finance Platform

A global brokerage and financial technology company in Greater London is seeking a Senior Middle Office Backend Software Engineer. In this role, you will lead a team of engineers to enhance the performance of the GBX platform, ensuring system resiliency and scalability. Candidates should have over 8 years of Jav ...

Senior VP & Full Stack Engineer: AI Driven Systems Leader

A leading global financial services company is seeking a Senior Vice President, Full-Stack Engineer in London. The successful candidate will lead high-performing teams and own the delivery of secure and scalable software solutions. Strong expertise in Java, leadership experience in agile environments, and hands- ...

Lead Java Scala Developer / PM in London Quant Capital

This is a job posted by our partner Jooble Yes, it’s a start-up, yes it's bleeding edge. Language is irrelevant. I want bright technologists who can cut solid code. I offer relocation for strong candidates. Job Description Quant Capital is urgently looking for a Lead Java / Scala / R ...

Senior Production Management Engineer — Hybrid (London)

Citibank (Switzerland) AG is seeking a Senior Engineer in Production Management to lead software development initiatives in London. This hybrid role requires strong Java programming skills, leadership in engineering practices, and the ability to implement CI/CD principles. Successful candidates will drive innova ...

Staff AI Driven Full Stack Engineer

Agoda is seeking a Staff Full Stack Engineer to design and build AI-driven chat experiences from their Bangkok HQ. The role requires 8+ years of software engineering experience, expertise in Java, Kotlin, .NET, and JavaScript/TypeScript. You will lead full-stack architecture for user-centric solutions and mentor ...

Senior Backend Architect, Fraud & Risk – Remote

Fanatics Betting & Gaming is searching for a Staff Backend Engineer to lead the backend architectural evolution in fraud detection. The role requires 7+ years in software engineering, primarily with Java and Spring Boot, emphasizing secure and scalable systems. Ideal candidates will collaborate with Risk and Com ...

Senior Java Lead for Equities Algo Trading

J.P. MORGAN is seeking a Lead Software Engineer for its Equities Trading Technology Organization in Greater London. This role involves developing algo trading strategies and real-time systems while collaborating with global teams. Candidates should have advanced Java skills, experience in low latency trading, an ...

Senior/Principal Software Engineer

Senior/Principal Software Engineer Application Deadline: 31 May 2026Department: Software EngineeringEmployment Type: PermanentLocation: London (Hybrid)Compensation: £70,000 - £100,000 / year Description Please note: This role requires applicants to ho ...

Applied Scientist — Agentic AI & Formal Verification

Amazon Web Services (AWS) is seeking an Applied Scientist to enhance cloud software verification tools. You will work with customers to establish software properties and identify methods for verification. The role requires expertise in programming languages like Java, C++, and Python, along with a PhD or Master' ...

Technical Insurance BA Implementation & API Specialist

A leading software company in Greater London is seeking a Business Analyst to join their Implementation team. In this full-time position, you will gather and translate client requirements while working on integration and software-related projects. The ideal candidate will have strong experience in product/applic ...

Data Science Engineer

Data Science Engineer (DV Cleared) Location: London or Manchester Security Clearance: DV Cleared Salary: Up to £80,000 An exciting opportunity has arisen for a Data Science Engineer to support a growing Data Science function within a major public sector programme. You'll b ...

Platform Engineer

Platform Infrastructure Engineer - Developer Experience (DevEx) London Our client is a leading prop trading firm seeking a DevEx Engineer to join a platform team at the core of how software is built and delivered. This is a DevEx Engineer role focused on creating a seamless developer experi ...

Senior Software Engineer

Senior Software Engineer (Backend)London - Hybrid (3 days in office)Up to £85k + benefits What if the systems you built were used every day by millions of readers around the world? A long‑established, AI‑driven technology business is hiring a Seni ...

Senior Software Engineer

Senior Software Engineer (Backend)London - Hybrid (3 days in office)Up to £85k + benefits What if the systems you built were used every day by millions of readers around the world? A long‑established, AI‑driven technology business is hiring a Seni ...

Software Engineer Hybrid working Up to £500,000 Base (+ Bonus)

Compensation: Up to £500,000 Base + Bonus Location: London (Hybrid) Overview A boutique prop trading firm is seeking a highly skilled Software Engineer to join a world-class engineering team building some of the fastest and most sophisticated trading systems in the ...

Research Software Engineer / Senior Research Software Engineer

The King’s Digital Lab (KDL) isseekingto appoint either a Research Software Engineer or Senior Research Software Engineer. KDL is a Research Software Engineering (RSE) team embedded within the Faculty of Arts and Humanities at King’s College London. We design and implement systems, infrastructure, t ...

Research Software Engineer / Senior Research Software Engineer

About us King's Digital Lab (KDL) is a Research Software Engineering (RSE) team embedded within the Faculty of Arts and Humanities at King's College London. We design and implement systems, infrastructure, tools, and processes needed to produce a heterogeneous range of high quality digital schola ...

Research Software Engineer / Senior Research Software Engineer

The King’s Digital Lab (KDL) is seeking to appoint either a Research Software Engineer or Senior Research Software Engineer.KDL is a Research Software Engineering (RSE) team embedded within the Faculty of Arts and Humanities at King’s College London. We design and implement systems, infrastructure, too ...

Research Software Engineer / Senior Research Software Engineer

# Further InformationAt King’s, we believe that the diversity of our community and a culture that is welcoming, open, inclusive and collaborative, are great strengths of the university. The Equality Act of protects the rights of our students and staff and provides a framework to fulfil our duties to eliminat ...

Research Software Engineer / Senior Research Software Engineer

# Further InformationAt King’s, we believe that the diversity of our community and a culture that is welcoming, open, inclusive and collaborative, are great strengths of the university. The Equality Act of protects the rights of our students and staff and provides a framework to fulfil our duties to eliminat ...

Research Software Engineer / Senior Research Software Engineer

The King’s Digital Lab (KDL) is seeking to appoint either a Research Software Engineer or Senior Research Software Engineer.KDL is a Research Software Engineering (RSE) team embedded within the Faculty of Arts and Humanities at King’s College London. We design and implement systems, infrastructure, too ...

🚀 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