Lead Software Engineer Python Java Jobs in London, UK

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Staff ML Engineer: LLMs for Legal AI, Visa Sponsored

A leading software company in the UK is looking for a Staff ML Engineer to lead the development of large language models for legal applications. You'll design ML architectures, manage training and fine-tuning of models, and mentor a team of engineers. The role requires expertise in Python and machine learning fr ...

Senior Applications Engineer — Remote Leader in Full Stack

Connect Fibre is seeking a Senior Applications Engineer to design and implement backend services and develop frontend applications. This role requires over 5 years of software development experience and strong skills in programming languages like JavaScript, Python, and PHP. The candidate will lead projects, men ...

Backend Infrastructure Engineer: Scale & Secure Systems

A leading software company in Greater London seeks a Backend Software Engineer to build scalable and performant systems, tackling real-world problems with innovative solutions. The role involves collaborating across teams and working autonomously to create APIs and systems that support impactful products. Candid ...

Trade Tech Software Engineer — Real Time Distributed Systems

G-Research in Greater London is seeking a Software Engineer to join their Trade Technology team. You will design and develop robust trading platforms, ensuring they are efficient and reliable. Ideal candidates should have a strong background in software engineering, proficiency in languages like Java or C++, and ...

Senior Trading Software Engineer – Low Latency

Deepstreamtech is looking for a Senior Software Engineer to join their engineering team in Greater London. The role involves designing and developing financial trading applications, collaborating on technical solutions, and mentoring junior engineers. Applicants should have over 4 years of software engineering e ...

Senior Software Engineer IAM Platform & Delivery

A global leader in information and analytics is seeking a Senior Software Engineer to design scalable and high-performance systems. This role involves complex technical challenges and mentoring junior team members within a dynamic IAM squad. The ideal candidate should possess over 4 years of software engineering ...

Senior Software Engineer — FinTech Payments & Banking Integrations

A leading fintech company in Greater London is looking for a Software Engineer to drive the development of payment technologies. In this role, you'll integrate new bank APIs and work on a variety of challenges in crypto and fintech. Ideal candidates should have a strong knowledge of Java and enterprise software, ...

Senior Android Engineer Kotlin, Scale & Impact

A leading food delivery service in Greater London is seeking a Software Engineer to enhance their technology infrastructure. The role involves improving code structure and architecture, as well as leading projects in a collaborative environment. Ideal candidates will have over 3 years of experience in Android de ...

Staff Software Engineer, Enterprise Lending Platform

A global financial technology company is seeking a Staff Software Engineer. This role will focus on architecting, designing, and implementing scalable systems for their lending platform. Candidates should have substantial experience in software engineering, leadership, and building robust APIs, preferably using ...

Staff Backend Engineer, Lending Platform Scale & Impact

A leading fintech company is seeking a Staff Software Engineer to architect and implement large-scale systems for credit solutions. The ideal candidate has 6+ years of software engineering experience, with at least 2 years in a leadership role. You will design robust services and maintain high standards of techn ...

Trading Connectivity Backend Engineer

A leading technology firm in the digital asset market is seeking a Software Engineer to join their Trading Connectivity team in London. In this role, you will design and maintain high-performance backend systems that connect with various liquidity providers. The ideal candidate has 1-3 years of experience in sof ...

Senior Backend Infra Engineer Scalable Systems

A leading software company in Greater London is searching for a Software Engineer to develop scalable and reliable infrastructure systems. You will be engaged in diverse tasks such as building a search ecosystem, contributing to open-source libraries, and crafting distributed systems. The position demands over 6 ...

Video Quality Analysis Engineer Real Time ML

A fast-growing UK technology company is looking for an experienced Software Development Engineer to enhance video streaming quality and technology. You will design algorithms using Java, C++, or C# and focus on machine learning and computer vision techniques to improve video quality. The ideal candidate has over ...

Graduate Software Engineer: Real Work, Mentorship, Growth

A tech-driven insurtech company in Greater London is seeking a Graduate Software Engineer to join their product team. You will be involved in building real software from day one, collaborating with engineers and designers, and gaining mentorship and experience in a diverse tech stack including Java and React/Nex ...

Software Engineer Media Streaming & Scalable Platforms

BBC Studios in London is seeking a Software Engineer to join their Media Services team. In this role, you will design and maintain software that powers audio and video experiences for millions. The position requires proficiency in Java and a bachelor’s degree in Computer Science. Expected salary ranges from £43, ...

Senior Fullstack Engineer Flexible, Bonus Eligible

Legal & General is seeking a Senior Software Engineer to join a high-performing engineering team in Greater London. This role entails building robust, scalable software solutions using Java/JVM technologies, coaching team members, and contributing to improving engineering practices. The ideal candidate will poss ...

Senior Software Engineer IAM Platform & Delivery

A global leader in information and analytics is seeking a Senior Software Engineer to design scalable and high-performance systems. This role involves complex technical challenges and mentoring junior team members within a dynamic IAM squad. The ideal candidate should possess over 4 years of software engineering ...

Senior Android Engineer Kotlin, Scale & Impact

A leading food delivery service in Greater London is seeking a Software Engineer to enhance their technology infrastructure. The role involves improving code structure and architecture, as well as leading projects in a collaborative environment. Ideal candidates will have over 3 years of experience in Android de ...

Graduate Software Engineer: Real Work, Mentorship, Growth

A tech-driven insurtech company in Greater London is seeking a Graduate Software Engineer to join their product team. You will be involved in building real software from day one, collaborating with engineers and designers, and gaining mentorship and experience in a diverse tech stack including Java and React/Nex ...

Senior Software Engineer — FinTech Payments & Banking Integrations

A leading fintech company in Greater London is looking for a Software Engineer to drive the development of payment technologies. In this role, you'll integrate new bank APIs and work on a variety of challenges in crypto and fintech. Ideal candidates should have a strong knowledge of Java and enterprise software, ...

Senior Backend Infra Engineer Scalable Systems

A leading software company in Greater London is searching for a Software Engineer to develop scalable and reliable infrastructure systems. You will be engaged in diverse tasks such as building a search ecosystem, contributing to open-source libraries, and crafting distributed systems. The position demands over 6 ...

Trading Connectivity Backend Engineer

A leading technology firm in the digital asset market is seeking a Software Engineer to join their Trading Connectivity team in London. In this role, you will design and maintain high-performance backend systems that connect with various liquidity providers. The ideal candidate has 1-3 years of experience in sof ...

Senior Fullstack Engineer Flexible, Bonus Eligible

Legal & General is seeking a Senior Software Engineer to join a high-performing engineering team in Greater London. This role entails building robust, scalable software solutions using Java/JVM technologies, coaching team members, and contributing to improving engineering practices. The ideal candidate will poss ...

Senior Software Engineer (United Kingdom)

Requirements 7-10+ years of relevant experience in software development, with a focus on SaaS or cloud-based applications Experience in leading or playing key roles in significant software projects, showing an ability to work effectively both independently and as part of a team </ ...

Senior Software Engineer (United Kingdom)

Requirements 7-10+ years of relevant experience in software development, with a focus on SaaS or cloud-based applications Experience in leading or playing key roles in significant software projects, showing an ability to work effectively both independently and as part of a team </ ...

Software Engineer Petabyte Scale Data & Trading Systems

Engineering underpins our continued growth and success, and we are committed to recruiting and developing the world’s best Engineers. Our teams develop and build tooling for a petabyte-scale compute farm; your code will exist at the cutting-edge underpinned by near infinite compute power. Most of our systems ...

Quantitative Research Custody & Fund Services Analyst or Associate in London JPMorgan Cha[...]

Quantitative Research - Custody & Fund Services - Analyst or Associate London, United Kingdom Posted 4 months ago 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. Ski ...

Senior Software Engineer (infrastructure focused)

Job Title: Senior Software Engineer Location: London My client is looking for a senior software engineer with a strong background in infrastructure, DevOps, and security best practices, along with advanced Python development skills. In this role, you’ll play a pivotal part in ...

Lead ML Platform Engineer

Lead Platform Engineer (Backend Python Focus) We are looking for a Lead Platform Engineer to join our Group Data Science function, to lead and trailblaze the development and building of software platforms. Working across our retail banners and group functions, you will build platform roadmaps that ...

Software Engineer (9 month Fixed Term Contract)

Crown Agents Bank is a vastly growing and regulated UK bank that connects emerging and frontier markets to the rest of the world, using FX and payments technology. We are transforming the way payments and FX move through emerging markets, reducing friction so that more money gets to those who need it. Emer ...

Senior Real Time Distributed Cloud Data Engineer

Zeta Global, based in London, is looking for a Senior Software Engineer to provide technical leadership in architecting and developing the Addressability part of the Zeta Marketing Platform. The role includes collaborating with teams to shape the roadmap for a state-of-the-art multichannel marketing solution. Ke ...

Senior Software Engineer — AI, Cloud & DevOps

Sabio is seeking a Senior Software Engineer within the AI Practice to design and operate secure, scalable software solutions. This role emphasizes a DevOps mindset and involves direct interaction with customers to shape technical solutions. Candidates should have strong experience across technology stacks, speci ...

High Performance Trading Connectivity Backend Engineer

Deepstreamtech is looking for a Software Engineer to join their Trading Connectivity team. This role involves designing, developing, and maintaining high-performance backend systems that integrate with their provider network. Candidates should have 2+ years of software engineering experience, preferably in Go or ...

Staff Software Engineer Commercial Trading & Systems

Marks and Spencer is looking for a Software Engineer to join their dynamic team in Greater London. This role focuses on developing robust backend systems, leading technical projects, and mentoring junior engineers. Ideal candidates possess expertise in Java and cloud infrastructure, paired with a passion for qua ...

Software Engineer Generative AI for Shopping UX

Amazon is seeking a talented Software Development Engineer to develop innovative features for the Rufus AI shopping assistant. The role demands a strong technical background, along with experience in programming languages like Java, C++, or C#. The team values customer obsession and innovation in delivering s ...

Senior Java AI Engineer: Modernize Legacy Services at Scale

Deepstreamtech is looking for an experienced software engineer in Greater London to join IG Group's Service Modernisation & AI team. This role involves modernising critical legacy services using advanced AI tooling while demonstrating its potential across the development lifecycle. Candidates should possess 8+ y ...

Staff Software Engineer – Global KYC & Onboarding Platform

A global technology company is seeking a Staff Software Engineer to join the Global KYC and Onboarding squad. The role involves creating innovative solutions for a new onboarding platform and mentoring junior engineers. Candidates should possess over 10 years of experience in software engineering, with significa ...

Senior Backend Engineer, Guest & Host — Europe

Airbnb in Greater London is seeking a skilled Software Engineer with expertise in backend development, particularly in Java and Kotlin. The role involves driving critical projects, mentoring junior engineers, and collaborating with cross-functional partners to optimize performance across Airbnb's platforms. Cand ...

Senior Backend Engineer, Guest & Host — Europe

Airbnb in Greater London is seeking a skilled Software Engineer with expertise in backend development, particularly in Java and Kotlin. The role involves driving critical projects, mentoring junior engineers, and collaborating with cross-functional partners to optimize performance across Airbnb's platforms. Cand ...

Senior Real Time Distributed Cloud Data Engineer

Zeta Global, based in London, is looking for a Senior Software Engineer to provide technical leadership in architecting and developing the Addressability part of the Zeta Marketing Platform. The role includes collaborating with teams to shape the roadmap for a state-of-the-art multichannel marketing solution. Ke ...

Senior Software Engineer — AI, Cloud & DevOps

Sabio is seeking a Senior Software Engineer within the AI Practice to design and operate secure, scalable software solutions. This role emphasizes a DevOps mindset and involves direct interaction with customers to shape technical solutions. Candidates should have strong experience across technology stacks, speci ...

High Performance Trading Connectivity Backend Engineer

Deepstreamtech is looking for a Software Engineer to join their Trading Connectivity team. This role involves designing, developing, and maintaining high-performance backend systems that integrate with their provider network. Candidates should have 2+ years of software engineering experience, preferably in Go or ...

Lead Cloud Network Engineer

Overview Lead Cloud Network Engineer - up to 95k+ Benefits London offices with Hybrid working options. A Lead Cloud Network Engineer opportunity for a business whose software products include AI and Automation software used by globally recognised companies. The Lead Cloud Net ...

Lead Cloud Network Engineer

Overview Lead Cloud Network Engineer - up to 95k+ Benefits London offices with Hybrid working options. A Lead Cloud Network Engineer opportunity for a business whose software products include AI and Automation software used by globally recognised companies. The Lead Cloud Net ...

Staff AI/ML Engineer — Agentic Systems Lead (UK Remote)

SR2 | Socially Responsible Recruitment | Certified B Corporation™ is looking for a Staff Software Engineer specializing in AI/ML, based in the UK, with a hybrid work model available. The successful candidate will lead technical projects, mentor engineers, and ensure the successful delivery of AI-driven products. ...

Senior Software Engineer AI/Edge Backend (On site UK)

A leading AI company in Greater London is seeking a Senior Software Engineer to lead backend and edge/IoT engineering in their Defence business unit. The role requires strong experience in Python and a compiled language, along with robust DevOps skills. You'll collaborate with cross-functional teams to deliver h ...

Senior Platform Engineer: Data Platform & Orchestration

A leading digital experience platform is looking for a driven Senior Platform Engineer to join their Core Data Team in Greater London. In this role, you will lead the design, development, and deployment of scalable software solutions while collaborating with cross-functional teams. The ideal candidate will have ...

Remote AI Engineer Lead Graph AI & Platform Scaling

A tech startup is seeking an AI Engineer Lead for their fully remote team. This role involves leading the technical development of their Graph AI platform, improving AI-driven matching systems, and building core product features. The ideal candidate will have 3–8+ years in software engineering or AI, strong back ...

Senior Software Engineer AI/Edge Backend (On site UK)

A leading AI company in Greater London is seeking a Senior Software Engineer to lead backend and edge/IoT engineering in their Defence business unit. The role requires strong experience in Python and a compiled language, along with robust DevOps skills. You'll collaborate with cross-functional teams to deliver h ...

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