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

Staff AI Backend Engineer — London, Equity

A leading software company in London is seeking a Staff Software Engineer to build backend infrastructure for advanced AI systems. The ideal candidate has strong expertise in Python and modern backend frameworks, with a solid understanding of PostgreSQL, RESTful APIs, and microservices. This role requires collab ...

Senior Full Stack Engineer for AI Driven Solutions

hackajob is collaborating with Baringa Partners to find an experienced Senior Full Stack Software Engineer in Greater London. You will build and maintain innovative AI and Machine Learning solutions. The ideal candidate will have 3-5 years of experience, expertise in JavaScript and Python, and strong full-stack ...

FX Quant Trader

The Financial Markets (FM) landscape is rapidly going through a process of digitisation, at the core of which is eTrading. eTrading at ING covers all products traded in ING FM. These span from the very liquid and electronic products (cash equities, futures, commodities and FX), Fixed Income products (corpo ...

Lead QA Engineer — Automation & Security Leader

A leading health technology company is seeking a Lead QA Engineer to lead the design and evolution of test frameworks, focusing on automation, performance, and security testing. This role includes mentoring QA engineers and ensuring best practices across teams. Strong hands-on experience in Java programming and ...

Infrastructure Engineer London

Infrastructure Engineer – London smartTrade Technologies is a software publisher specializing in the trading and finance sector. Its clients primarily include investment banks, stock exchanges, brokers, and pension funds. smartTrade enables real‑time computerized management of financial flows amo ...

Hybrid Node.js & React Engineer – 1 day in office

Requirements: At least 2 years of software development experience, which may have occurred at school. Proficiency in the following technologies:HTML5, TypeScript/JavaScript, NodeJS. Experience in building responsive web applications using React. Experience in testing through Uni ...

NodeJS Developer in London Quant Capital

Requirements: At least 2 years of software development experience, which may have occurred at school. Proficiency in the following technologies:HTML5, TypeScript/JavaScript, NodeJS. Experience in building responsive web applications using React. Experience in testing through Uni ...

Lead Scala Engineer in London Quantexa

Job Opportunity: Lead-level Scala Engineer Due to the continuous success and high demand from our customers, we are looking for a Lead-level Scala Engineer to join our R&D team. As part of this team, you will be involved in building and shaping the next generation of products that transform how orga ...

Senior Test Engineer (Hybrid) – London

Location: LondonStart date: Immediate The role:AlphaSights is seeking a highly experienced, self-driven Senior Test Engineer to join our Software Engineering Team. We are a digital business in which continuous uptime, product quality, and user experience are criti ...

Senior Test Engineer (Hybrid) – London

Location: LondonStart date: Immediate The role:AlphaSights is seeking a highly experienced, self-driven Senior Test Engineer to join our Software Engineering Team. We are a digital business in which continuous uptime, product quality, and user experience are criti ...

Senior Software Engineer, Proactive Security

Who We Are Join us in our mission to transform the way people shop and eat, where impact, innovation and growth drive everything we do. Our Engineering teams tackle complex technical challenges across a global, three-sided marketplace, building and scaling systems that serve millions of customers ...

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

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

Software Development Engineer, Video Quality Analysis (VQA)

Software Development Engineer, Video Quality Analysis (VQA) GBR, London, United Kingdom | Posted on 11/25/2024 Are you an experienced Software Development Engineer eager to shape the future of video quality and streaming technology? Join a fast-growing, UK-based technology company and bec ...

Software Engineer, Trading – Cumberland Systematic

Software Engineer, Trading – Cumberland Systematic Software Engineer, Trading – Cumberland Systematic Job Location London Employment type Regular Department Technology Targeted Start Date Immediate DRW is a diversified trading firm with over 3 de ...

Senior Test Engineer (Hybrid) – London Software Engineering London

The options provided in this section allow you to customise your consent preferences for any tracking technology used for the purposes described below. To learn more about how these trackers help us and how they work, refer to the . Please be aware that denying consent for a particular purpose may make related f ...

Senior Product Engineer, Full Stack Energy

Senior Product Engineer, Full Stack - Energy£70,000 to £95,000PermanentLondon, hybridThe opportunityOur client is hiring a Senior Product Engineer, Full Stack, to help build the next generation of customer-facing software in the energy market.Operating in a complex ...

Senior Engineering Lead, Organizational Engineering Agent Platform, DeepMind

Senior Engineering Lead, Organizational Engineering Agent Platform, DeepMind DeepMind London, UK Bachelor's degree in Computer Science or a related technical field or equivalent practical experience. 8 years of experience in software development, including distributed syst ...

Head of Software Engineering

Location: UK (Hybrid) - 3 days a week onsite Employment Type: Full-Time, Permanent An excellent, exciting new permanent position has become available for a growing Financial SaaS, Capital Markets company looking to hire an exceptional Head of Software Development ...

Backend Developer Bazel

Backend Developer – Bazel Location: London, UKJob Type: Contract Our Product Area, Platinum, has historically owned and operated both our VCS and CI systems in addition to the Fleet Management product for helping developers manage large‑scale software changes. Over the past year we hav ...

Senior Python Engineer – Data Ingestion – HealthTech – $100m Funding

Job Description The Role As a senior python engineer on the data ingestion team you will work closely with senior stakeholders in the business to build out a Data Ingestion framework and infrastructure that allows seamless transfer of data 24/7. You will •Develop ...

Senior Python Engineer – Data Ingestion – HealthTech – $100m Funding

Job Description The Role As a senior python engineer on the data ingestion team you will work closely with senior stakeholders in the business to build out a Data Ingestion framework and infrastructure that allows seamless transfer of data 24/7. You will •Develop ...

Immersive VR Teleoperation Engineer for Humanoid Robots

Thehumanoid is seeking a Software Control Teleoperation Engineer in London to innovate VR-based teleoperation for humanoid robots. You'll design real-time communication software that integrates human operators with robots via VR headsets and wireless streaming. Candidates should have 5+ years of experience in VR ...

Safeguards Infra Engineer Build Safe AI, Flexible Hours

A technology company in London is seeking a Software Engineer for Safeguards Infrastructure. In this role, you will develop critical safety mechanisms for AI systems. Ideal candidates will have a Bachelor's degree and 4 to 10 years of software engineering experience, proficiency in Python, and the ability to com ...

Senior Omics Imaging Software Engineer (Hybrid)

A leading research centre in Greater London is looking for a Senior Research Software Engineer to develop software tools for merging in-vivo functional data with ex-vivo transcriptomics data. The ideal candidate should possess strong programming skills in Python and experience in image registration and analysis. ...

Applied AI Engineer — Build Production Scale AI Agents & RAG

A leading AI workflow company in Greater London seeks a Senior Software Engineer to own AI agent infrastructure. The position involves backend development using Python and building AI-powered features in production environments. Candidates should have at least 5 years of professional software engineering experie ...

Founding AI Software Engineer for Enterprise Deployments

An innovative Insurtech startup in Greater London is seeking a Software Engineer to build AI solutions that transform commercial insurance risk assessment. In this role, you'll ship features, manage enterprise deployments, and collaborate with clients. The ideal candidate has over 7 years of software engineering ...

Staff Platform Engineer – Neurosymbolic AI at Scale

A forward-thinking AI company is seeking a Staff Software Engineer to shape the technical direction of its platform. The ideal candidate will possess deep expertise in Python, strong system design skills, and a proven track record in production-quality engineering. Responsibilities include writing code, mentorin ...

Software Engineer, Research Quantitative Data Systems

A leading trading firm is seeking a Software Engineer for their Cumberland Systematic team in London. You will design and develop full-stack systems for global trading operations. The ideal candidate will have strong Python experience and the ability to work independently while collaborating directly with quanti ...

Platform Engineer: Kubernetes & ML Platform

A biotech company in London is seeking a Software Engineer to join its Platform Team. This mid-senior level role involves developing and managing Kubernetes-based applications and enhancing CI/CD pipelines to support machine learning projects. Candidates should have at least 3 years of experience in software eng ...

Cloud AI for Science Software Engineer

A leading biopharma company in Greater London seeks a Software Engineer to develop scalable infrastructure for AI models. You will work within an AI team, designing robust software solutions that handle large-scale data, ensuring high performance and collaboration with domain experts. Ideal candidates will posse ...

Platform Operations Engineer: Observability & FinOps (Hybrid)

A deep-tech company in London is seeking a Senior Platform Engineer to enhance their AI-driven simulation software capabilities. The role involves managing the observability stack, driving FinOps practices, and implementing security policies across cloud providers. The ideal candidate should have significant Dev ...

Senior Software Engineer — Client Eligibility Platform

A leading financial information provider is seeking a Senior Software Engineer to join their Client Compliance team in London. This role involves designing and building compliance platforms that manage client eligibility and streamline workflows. Candidates should have 5+ years of experience in software developm ...

Senior Software Security Engineer — Flexible Hours

A leading AI research organization in the UK is looking for a Software Security Engineer to enhance the security of AI systems. The ideal candidate will have strong programming skills in Python or a systems language, extensive experience in software engineering, and a passion for AI safety. This position offers ...

AI Native Junior Software Engineer Remote & Flexible Hours

A leading cleaning services platform in London is seeking a Junior Software Engineer to solve complex problems and build scalable platforms. You will work with a variety of technologies such as Python, Django, and Angular, and contribute to improving user experiences. The ideal candidate will have a strong educa ...

Senior Modelling Engineer — Scalable Training Platform

A leading training platform for runners in London seeks a Software Engineer to enhance their app by building and improving training features. Applicants should have 3+ years in software engineering, proficiency in Python, and strong algorithm design skills. The role involves collaboration across teams and requir ...

Integrations Engineer — Agentic AI & CRM Apps

A leading customer communications platform in Greater London is seeking a Software Engineer to contribute to key native integrations and work with teams to enhance customer experiences. This hybrid role requires 3+ years of experience in software engineering, proficiency in Python or JavaScript, and familiarity ...

Cloud Image Engineer Ubuntu Linux & CI Automation

A leading open source software company in Greater London is seeking a Software Engineer to work on cloud infrastructure and automation. The role involves building and maintaining robust delivery pipelines for Ubuntu, collaborating closely with partners including Amazon and Microsoft, and contributing to the open ...

Cyber Software Vulnerability Engineer — Reverse‑Engineering & Defense

Forwardrole is seeking a Cyber Software Vulnerability Engineer to join their National Security division. This position involves software analysis, reverse engineering, and collaboration with cybersecurity teams to enhance security measures. Candidates should have proficiency in C/C++, Python, and experience with ...

Senior Real Time Data Reliability Engineer

Bloomberg L.P. is seeking a Senior Software Engineer in London to enhance the reliability of their real-time data platform. In this role, you will design and maintain scalable software that supports global distribution infrastructure and work closely with various teams to improve system reliability and performan ...

Platform Engineer: AI Infra & GPU Compute

WNTD in the United Kingdom is hiring a Platform Engineer to design and build applications that enhance AI infrastructure software. This hands-on role requires strong Python skills and deep experience with Kubernetes, focusing on real platform software rather than generic DevOps tasks. Key responsibilities includ ...

Senior Software Engineer Trading Shared Services

A leading financial technology firm in London seeks a Senior Software Engineer to develop high-performance distributed systems for its Electronic Trading platforms. The ideal candidate will have significant experience in C++ and Python, a strong understanding of software design principles, and a commitment to de ...

Senior Real Time Data Reliability Engineer

Bloomberg is hiring a Senior Software Engineer in London to work on their real-time data platform. The role focuses on engineering reliability through software, designing scalable and fault-tolerant systems. Candidates should have experience with object-oriented programming (preferably Python or C++) and strong ...

2nd Level Application Support Engineer

Job Description 2nd Level Application Support EngineerWe are looking for a experienced technical engineer to join our growing Equities business. The platform you will be looking after is used by multiple trading desks servicing a diverse set of clients and ins ...

2nd Level Application Support Engineer

Job Description 2nd Level Application Support EngineerWe are looking for a experienced technical engineer to join our growing Equities business. The platform you will be looking after is used by multiple trading desks servicing a diverse set of clients and ins ...

Systematic & Credit Portfolio Trading Tool Developer, Assistant 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 ...

Reliability Engineer

Position Summary Two Sigma is a leading quantitative investment management and trading firm. The company applies a scientific approach to investing, combining cutting-edge technology, artificial intelligence, data science, and quantitative research with rigorous human inquiry to capitalize on mark ...

Rapid Application Developer JAVA

Rapid Application Developer - JAVA London | Permanent Contract | Hybrid A tactical application development role focused on rapid delivery and immediate business impact directly on the trading desk. You will be part of an elite team where technical agility and a proactive approach are the ...

Staff Site Reliability Engineer Cloud

Elevate Global Operations as our Next Cloud Site Reliability Engineer (Observability Expert)!Are you ready to lead an OTel-first strategy and redefine reliability for a global industrial technology leader? Trimble is looking for a visionary Cloud Site Reliability Engineer to manage our massive-s ...

Staff Site Reliability Engineer Cloud

Elevate Global Operations as our Next Cloud Site Reliability Engineer (Observability Expert)!Are you ready to lead an OTel-first strategy and redefine reliability for a global industrial technology leader? Trimble is looking for a visionary Cloud Site Reliability Engineer to manage our massive-s ...

Site Reliability Engineer

Our client helps companies build highly complex mathematical models from available limited datasets in order to help them make key business decisions.With increased demand and growth at the forefront of business objectives, the company are looking to hire a talented Site Reliability Engineer tha ...

🚀 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