Lead Software Engineer Python Java Jobs in London, UK

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Senior Software Engineer Business Expense Platform APIs

A global technology company is seeking a Senior Software Engineer to enhance their Business Expense Management team. This role involves designing and maintaining scalable services, collaborating on public APIs, and solving complex problems. Ideal candidates will have strong Java skills, experience with microserv ...

Java Full Stack Engineer | Cloud‑Driven, Client‑Focused Delivery

A leading consultancy firm in Greater London is seeking an experienced Full Stack Engineer to join their Software Engineering Practice. You will be crucial in developing high-quality solutions across the full lifecycle, using technologies such as Java, Angular, and cloud infrastructure. The role includes working ...

Full Stack CMS Engineer – Magnolia/ContentStack (Hybrid/Remote)

MOO is seeking a Software Engineer to join their Browse team in London. The role involves developing content-driven pages using Java, TypeScript, and NextJS while contributing to system requirements and embracing Agile methodologies. Candidates should have experience with CMS and a passion for testing. MOO promo ...

Senior Backend Engineer, Banking Connectivity

A global financial tech company in London is seeking a Senior Software Engineer to build critical bank integrations for their Banking Connectivity platform. The successful candidate will work on backend systems using Java and engage in ensuring reliable data flows across financial institutions. This role offers ...

Staff Backend Engineer – Global Banking Platform

A fintech company in Greater London is seeking a Backend Software Engineer to enhance their technology platform. The role involves working in a hybrid model while producing high-quality code in Java and contributing to cloud-native architectures. Candidates should be excited to work on building new features and ...

Backend Software Engineer II, Identity & Authorization Platform

Ripple in Greater London is seeking a Software Engineer II to join their Authentication & Authorisation platform team. The role involves building and shipping features within the identity platform. Ideal candidates will have experience in backend engineering with Golang or Java and some exposure to Kubernetes. T ...

Senior Backend Engineer — Identity & Authorization, AI‑Driven

P2P is looking for a Senior Software Engineer to join their Authentication & Authorisation platform team, where you will design significant components within their identity platform. Candidates should have strong backend engineering experience in Golang or Java and be skilled with Kubernetes. This role offers an ...

Senior Software Engineer, Partner Integrations & Systems

Quantcast is seeking a Senior Software Engineer for its Partner Integrations team in Greater London. This role involves driving engineering initiatives, resolving cross-team bottlenecks, and supporting junior team members. Successful candidates will have at least 2 years of experience with distributed systems an ...

Software Engineer, Retail Banking Platform (Kotlin/Cloud)

A UK-licensed bank is seeking a Software Engineer to build and maintain systems for their Retail Banking Platform. The ideal candidate will design scalable backend services using Kotlin or Java, contributing to the bank's growth and innovation in financial services. The role promotes a collaborative team environ ...

Staff Software Engineer, Warehousing Cloud & Automation

A renowned retail company in London is seeking a Software Engineer to build and maintain high-quality cloud infrastructure solutions. Key responsibilities include enhancing engineering standards and mentoring team members. The ideal candidate should have robust backend system development experience, and proficie ...

Senior Production Engineer & VP, Global Finance Tech

A major financial services firm in Greater London is looking for a Senior Engineer in Production Management. This role focuses on software development and requires strong Java skills and experience in leading engineering teams. Responsibilities include setting technical standards, contributing code, and owning k ...

Asset & Wealth Trading Software Engineer (Assoc/VP) London

A leading global investment firm in London seeks a Software Engineer (Associate/Vice President) for its Asset Management Trading Engineering team. You will collaborate with traders and engineers to develop innovative technological solutions, focusing on full stack development in a fast-paced finance environment. ...

Senior Frontend Engineer Next.js & TypeScript

Java Script Works is seeking a Senior Software Engineer (Frontend) to join their team in London, United Kingdom. The role focuses on managing front-end development using React and Next.js to design and implement seamless user interfaces. Ideal candidates will have strong experience in TypeScript and a passion fo ...

Staff Web Apps Engineer — React/Next.js Lead

Java Script Works is looking for a Staff Software Engineer - Web Apps to join their team in Greater London. The ideal candidate will have strong development experience with React, Node.js, and JavaScript, along with an understanding of cloud technologies and deployment processes. This full-time role offers compe ...

Front End Engineer Hyperscale Cloud Console (London)

Java Script Works is seeking a Front End Software Engineer based in London, UK. This full-time position requires strong skills in modern JavaScript frameworks such as ES6+, TypeScript, and Node.js. The ideal candidate will have professional experience in front-end development and familiarity with cloud-based com ...

Senior Cloud Security & Infra Engineer (AWS)

Java Script Works is seeking a Senior Software Engineer in Greater London to design, develop, and deploy cloud infrastructure on AWS utilizing technologies like CloudFormation, CDK, and Terraform. The ideal candidate will have expertise in Node.js, TypeScript, and NestJS, alongside a strong focus on implementing ...

Senior Backend Engineer, Banking Connectivity

A global financial tech company in London is seeking a Senior Software Engineer to build critical bank integrations for their Banking Connectivity platform. The successful candidate will work on backend systems using Java and engage in ensuring reliable data flows across financial institutions. This role offers ...

Senior Software Engineer Business Expense Platform APIs

A global technology company is seeking a Senior Software Engineer to enhance their Business Expense Management team. This role involves designing and maintaining scalable services, collaborating on public APIs, and solving complex problems. Ideal candidates will have strong Java skills, experience with microserv ...

Senior Software Engineer Hybrid Payments Platform

Checkout.com is seeking a Senior Software Engineer based in Greater London. The ideal candidate will have a Bachelor's or Master's in Computer Science and proficiency in C# .NET, Java, or Go. Responsibilities include collaborating with teams to design scalable systems and writing high-quality code. Benefits incl ...

Senior Software Engineer, Partner Integrations & Systems

Quantcast is seeking a Senior Software Engineer for its Partner Integrations team in Greater London. This role involves driving engineering initiatives, resolving cross-team bottlenecks, and supporting junior team members. Successful candidates will have at least 2 years of experience with distributed systems an ...

Senior Backend Engineer — Identity & Authorization, AI‑Driven

P2P is looking for a Senior Software Engineer to join their Authentication & Authorisation platform team, where you will design significant components within their identity platform. Candidates should have strong backend engineering experience in Golang or Java and be skilled with Kubernetes. This role offers an ...

Java Full Stack Engineer | Cloud‑Driven, Client‑Focused Delivery

A leading consultancy firm in Greater London is seeking an experienced Full Stack Engineer to join their Software Engineering Practice. You will be crucial in developing high-quality solutions across the full lifecycle, using technologies such as Java, Angular, and cloud infrastructure. The role includes working ...

Senior Backend Engineer – APIs (Node.js/TypeScript)

Java Script Works is seeking a Senior Software Engineer - Backend in London, United Kingdom. This full-time role focuses on designing and implementing APIs using REST or GraphQL while writing scalable backend services. Candidates should have at least 5 years of programming experience with Node.js and TypeScript, ...

Senior Software Engineer Hybrid Payments Platform

Checkout.com is seeking a Senior Software Engineer based in Greater London. The ideal candidate will have a Bachelor's or Master's in Computer Science and proficiency in C# .NET, Java, or Go. Responsibilities include collaborating with teams to design scalable systems and writing high-quality code. Benefits incl ...

Senior Software Engineer Full Stack (React/ASP.NET Core)

Java Script Works is looking for a Senior Software Engineer based in London, United Kingdom. The ideal candidate should have strong knowledge of ASP.NET Core and experience with frontend frameworks such as React and Vue.js. This full-time position offers a competitive compensation package. Please note that visa ...

Software Engineer, Retail Banking Platform (Kotlin/Cloud)

A UK-licensed bank is seeking a Software Engineer to build and maintain systems for their Retail Banking Platform. The ideal candidate will design scalable backend services using Kotlin or Java, contributing to the bank's growth and innovation in financial services. The role promotes a collaborative team environ ...

Senior Front End & Test Infrastructure Engineer (React/Bazel)

Teksystems is seeking a Senior Front-end Software Engineer to contribute to the migration of applications into a Bazel-based monorepo. The role involves shaping the technical roadmap for the test infrastructure and improving testing practices. Ideal candidates will have strong skills in React, Bazel, and Java, a ...

Engineering Manager: Java AI for FinTech (Hybrid)

A leading technology recruitment firm in the UK is seeking an Engineering Manager (Java AI) to lead a team of AI Engineers. This role requires strong technical leadership skills and a solid background in software engineering, particularly in Java and modern architectures. The successful candidate will work in a ...

Senior Software Engineer, CalcGraphs Vice President

Team Overview XiP is building a next-generation cross-asset calculation system for Citi trading desks and enterprise users in the largest global financial markets and exchanges in New York, London, and other major financial hubs. Our team owns multiple Java Spring Boot Services that execu ...

Senior Software Engineer, CalcGraphs Vice President

Team Overview XiP is building a next-generation cross-asset calculation system for Citi trading desks and enterprise users in the largest global financial markets and exchanges in New York, London, and other major financial hubs. Our team owns multiple Java Spring Boot Services that execu ...

Senior Alveo Developer: AWS Cloud & Market Data Pipelines

EPAM Systems is seeking a Senior Alveo Developer to lead the design and optimization of market data unification processes in a dynamic financial environment. The ideal candidate will have hands-on experience with Alveo or similar data management platforms, strong programming skills in Java, Python, or Scala, and ...

Remote Cloud Architect for AI/ML Solutions

A leading AI solutions provider is seeking a Cloud Architect to join its Engineering team. The role focuses on creating enterprise-quality AI and data science solutions, requiring excellent skills in Java, Typescript, or Python, as well as experience with cloud platforms such as GCP, AWS, or Azure. You will lead ...

Data & AI Cloud Architect, AWS Professional Services in London Amazon

Data & AI Cloud Architect, AWS Professional Services London, United Kingdom Posted about 2 months ago Requirements: Experience in governance, streaming architectures, and Open Table Formats Proficiency in at least one programming language (e.g., Python, Java, < ...

Senior Software Development Engineer in Test

Senior Software Development Engineer in Test (SDET) - Java, JBehave/Cucumber, MicroservicesPerm3 days a week on-site in Farringdon, LondonUp to £75,000 per annum A rapidly growing fintech organisation is transforming access to finance for small and medium-sized bu ...

Production Support Engineer

Our client, a leading digital bank specialising in crypto assets, is looking for a Production Support Engineer to provide front‑line support across various cryptocurrency business lines and functions, including client trading, lending, proprietary trading, trade settlement, and risk management. In addit ...

Senior Fullstack Engineer (Commerce Platform)

Requirements You are experienced with modern JavaScript development, testing, and debugging You have experience building and scaling backend services using Java and/or Python You have worked in cloud-native environments such as Google Cloud Platform or similar platforms </li ...

Senior Fullstack Engineer (Commerce Platform)

Requirements You are experienced with modern JavaScript development, testing, and debugging You have experience building and scaling backend services using Java and/or Python You have worked in cloud-native environments such as Google Cloud Platform or similar platforms </li ...

Data Analytics Engineer I Software engineering London

Checkout.com is a fintech company that powers digital payment experiences worldwide. The Financial Infrastructure team builds and maintains core systems that process hundreds of billions of financial events each year. As an Analytics Engineer, you will partner with Finance and Treasury teams to tra ...

Data Engineer – Content Analytics

We’re looking for an experienced Data Engineer to join a high-performing Content Analytics & Products team, supporting the development of data-driven products and insights across the full content lifecycle. This role sits at the heart of a growing data function, where you’ll design and build scalab ...

Systems: Senior Linux Infrastructure Engineer (London)

The D.E.Shaw group seeks a senior systems engineer with extensive Linux experience to join its Platform Engineering team. This is a hands‑on, technical role within a global cross‑platform engineering team responsible for the firm’s core technology infrastructure. This position offers the opportunity to be ...

ASIC Engineer

About the PositionWe are looking to hire an experienced ASIC Engineer to help us design, test and deploy advanced hardware designs. As part of our Ultra Low Latency team, you’ll have the opportunity to collaborate with people in areas across the firm, including trading, networking and resear ...

Global Banking & Markets – FICC (Fixed Income, Currencies & Commodities) Engineer Associate

What we do:At Goldman Sachs, our Engineers don’t just make things we make things possible. We strive to change the world by connecting people and capital with ideas and solve the most challenging and pressing engineering problems for our clients. Join our engineering teams that build massively s ...

Python Engineer at a Global Private Equity Firm

Are you a Python Engineer in finance looking to work on greenfield projects? This is an opportunity to join a global private equity firm that is taking a tech-first approach. You’ll be working as a Python Engineer, closely with stakeholders across both investments and technology. ...

Lead SDET (iOS)

Who we are:For over 20 years, Global Relay has set the standard in enterprise information archiving with industry-leading cloud archiving, surveillance, eDiscovery, and analytics solutions. We securely capture and preserve the communications data of the world’s most highly regulated firms ...

Staff/Sr. Software Developer Java Messaging Orchestration for Apple iCloud, Apple Music

Selection changes the language of the page/content Staff/Sr. Software Developer - Java - Messaging Orchestration for Apple iCloud, Apple Music London, England, United Kingdom Software and Services The role is in Apple Services Engineering (ASE) in London. ASE is the team behind high-pro ...

Low Latency Trading & Observability SRE – Elite Quant Hedge Fund

Low Latency Trading & Observability SRE / Platform Engineer / Production Engineer sought to join an elite Multi-Strategy Quant Hedge Fund with $40BN+ in Assets Under Management. Our client is one of the world’s top Hedge Funds who are especially renowned for innovation and investment in Data & Tech ...

AI Agent Developer (Remote) (London)

About the Project Outlier helps the world’s most innovative companies improve their AI agents by providing human feedback. We collaborate with leading AI organizations to train Large Language Models (LLMs) to function as proactive, multi-step agents. Our projects focus on teaching these systems how to d ...

AI Agent Engineer (Remote) (London)

About the Project Outlier helps the world’s most innovative companies improve their AI agents by providing human feedback. We collaborate with leading AI organizations to train Large Language Models (LLMs) to function as proactive, multi-step agents. Our projects focus on teaching these systems how to d ...

Software Engineering Consultant (Remote) (London)

About the Project Outlier helps the world’s most innovative companies improve their AI agents by providing human feedback. We collaborate with leading AI organizations to train Large Language Models (LLMs) to function as proactive, multi-step agents. Our projects focus on teaching these systems how to d ...

AI Engineer (Remote) (London)

About the Project Outlier helps the world’s most innovative companies improve their AI agents by providing human feedback. We collaborate with leading AI organizations to train Large Language Models (LLMs) to function as proactive, multi-step agents. Our projects focus on teaching these systems how to d ...

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