Lead Software Engineer Python Java Jobs in London, UK

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Head of Development

Head of Software Engineering (Deputy CTO) Java , Capital Markets, Full Stack Development, Tech Lead, DevOps, AI/ML, CI/CD, Trading Systems, Front Office. London – Hybrid – 3 days a week onsite. Permanent Role. Harrington Starr has partnered up with a Global Financi ...

P&L Python Developer

Job Detils: Role Name : P&L Python Developer Type : Contract – Inside IR35 Location : Bromley (BR1 1LR) / London, UK Hybrid/Remote : Hybrid – 3 days per week onsite Start Date : ASAP Duration : 12 Months Job Description: ...

P&L Python Developer

Job Detils: Role Name : P&L Python Developer Type : Contract – Inside IR35 Location : Bromley (BR1 1LR) / London, UK Hybrid/Remote : Hybrid – 3 days per week onsite Start Date : ASAP Duration : 12 Months Job Description: ...

P&L Python Developer

Job Detils: Role Name : P&L Python Developer Type : Contract – Inside IR35 Location : Bromley (BR1 1LR) / London, UK Hybrid/Remote : Hybrid – 3 days per week onsite Start Date : ASAP Duration : 12 Months Job Description: ...

Principal Software Engineer Executive Director

Job Description If you are looking for a game-changing career, working for one of the world's leading financial institutions, you've come to the right place. JP Morgan Chase's ambitions for AI/ML are transformational, but safety and security are non negotiable. As a Principal Software Eng ...

Mid Level Test Engineer (Hybrid) – London Software Engineering London

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Senior Software Engineer, Unified Platform (Reference Data)

DRW is a technology-driven, diversified principal trading firm. We trade our own capital at our own risk, across a broad range of asset classes, instruments and strategies, in financial markets around the world. As the markets have evolved over the past 30 years, so has DRW – maximizing opportuniti ...

DevOps Engineer

DevOps Engineer Global Payments Technology | High-Growth Environment Location: Remote Salary: Up to £55,000 base Visa Sponsorship: Not available Are you a DevOps engineer who thrives building the infrastructure that lets great softw ...

DevOps Engineer

DevOps Engineer Global Payments Technology | High-Growth Environment Location: Remote Salary: Up to £55,000 base Visa Sponsorship: Not available Are you a DevOps engineer who thrives building the infrastructure that lets great softw ...

DevOps Engineer

DevOps Engineer Global Payments Technology | High-Growth Environment Location: Remote Salary: Up to £55,000 base Visa Sponsorship: Not available Are you a DevOps engineer who thrives building the infrastructure that lets great softw ...

Flow X Process Engineer

Flow X Process Engineer 6 Months Remote/London Market Rate (Inside IR35)My client, in the Insurance sector is looking for a Flow X Process Engineer to join their fast-paced team on an initial 6 month contract, the ideal candidate will have experience in the Insurance industry.<br ...

Flow X Process Engineer

Flow X Process Engineer 6 Months Remote/London Market Rate (Inside IR35)My client, in the Insurance sector is looking for a Flow X Process Engineer to join their fast-paced team on an initial 6 month contract, the ideal candidate will have experience in the Insurance industry.<br ...

Flow X Process Engineer

Flow X Process Engineer 6 Months Remote/London Market Rate (Inside IR35)My client, in the Insurance sector is looking for a Flow X Process Engineer to join their fast-paced team on an initial 6 month contract, the ideal candidate will have experience in the Insurance industry.Flow X P ...

Senior Java Architect Hybrid Role in London

A global digital engineering provider is seeking a seasoned Java Developer for a hybrid role in London. The successful candidate will work on complex applications, leading initiatives and mentoring peers. Responsibilities include designing Java and Python systems, collaborating with international teams, and ensu ...

Quantitative Developer

We’re looking for a quantitative developer who is passionate about working with financial data and building products that traders and researchers actually use. At Intropic you’ll join a fast-moving fintech startup where engineers own hard, open-ended problems across research, data and product — we don’t ju ...

Senior Research Software Engineer Multiphoton Brain Imaging

A prestigious research institution in London seeks a research software engineer to develop algorithms for processing functional brain imaging data. The role involves building efficient software solutions to aid neuroscience research. Ideal candidates should have strong programming skills in Python and experience ...

Senior Software Engineer Production AI & Web (London)

A pioneering tech firm based in London is seeking a Senior Software Engineer to design and maintain critical backend services and create user-facing components. This hybrid role emphasizes real-world impact, with meaningful equity and extensive company benefits. Ideal candidates will have a strong background in ...

Senior Distributed Systems Engineer, Electronic Trading

Bloomberg is seeking a Senior Software Engineer for its Electronic Trading Shared Services in London. You'll build high-performance distributed systems and design APIs that facilitate data exchange across applications. Candidates must have experience with C++ and Python, a degree in a relevant field, and a stron ...

Remote Python Systems Engineer for AI Collaboration (Contract)

A leading AI solutions provider is seeking a Software Engineer to work remotely on contract for 1 month at $100 per hour. The ideal candidate will develop complex Python systems and collaborate with AI research teams to enhance model performance. Applicants should have experience at top U.S. tech firms and a str ...

Senior QA Engineer in London Blackwall

Job DescriptionOur company is currently seeking a skilled individual to join our team as a Software Test Engineer. The primary focus of this role will involve working on pipelines for high-performance backend services.Key Responsibilities:Design, update, and execute automated ...

Sr Backend Engineer Accounting Integrations & Reporting

Senior Software Engineer I - Backend (Java) - Business Accounting Integrations and Reporting Full-time Compensation: GBP 85,000 - GBP 105,000 - yearly Wise is a global technology company, building the best way to move and manage the world’s money.Min fees. Max ease. ...

Software Engineer £120,000 + Comps London

Overview Software Engineer – London. Our client, a globally recognised Fintech leader known for its innovation and engineering excellence, is seeking a Software Engineer to join their London-based technology team. This is a unique opportunity to work at the heart of a critical engin ...

DevOps QAT Automation Engineer / DevOps Test Engineer (SC or DV Cleared)

QAT Automation Engineer / DevOps Test EngineerAWS | Python | CI/CD | SC / DV ClearedWe are supporting a secure government programme looking to hire a highly technical QAT Automation Engineer / DevOps Test Engineer to join a modern cloud-native software engineering team.This is not ...

DevOps QAT Automation Engineer / DevOps Test Engineer (SC or DV Cleared)

QAT Automation Engineer / DevOps Test EngineerAWS | Python | CI/CD | SC / DV ClearedWe are supporting a secure government programme looking to hire a highly technical QAT Automation Engineer / DevOps Test Engineer to join a modern cloud-native software engineering team.This is not ...

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 ...

Hybrid AI First Software Engineer for Enterprise

A dynamic technology startup in Greater London seeks a Software Engineer passionate about developing AI-first software. You'll contribute by defining and building reliable product features and experimenting with AI techniques. Required qualifications include at least 3 years of experience, proficiency in modern ...

Senior Backend Engineer — Healthcare Data Platform (London)

A healthcare technology company is seeking a software engineer to build backend systems for managing large healthcare datasets and developing APIs for its marketplace. The ideal candidate will have over 3 years of experience in software engineering, strong programming skills in Python or TypeScript, and an abili ...

Senior SRE & Software Engineer: Middleware Resilience

A leading financial services company in London is seeking a Senior Software Engineer/SRE. Join the Application Middleware SRE team to build resilient, high-performance software that supports Bloomberg's infrastructure. Candidates should have expertise in Python and C++, along with strong system reliability skill ...

Senior Platform Test Engineer for ML & Cloud

A leading tech company in the UK is seeking an experienced software engineer to design and build high-performance tools for validating ML data pipelines. The role includes developing test solutions and automation frameworks while mentoring junior engineers. Ideal candidates will have 8+ years of experience in so ...

Software Engineer Crafting Scalable Solutions

A cutting-edge AI firm is seeking an ambitious Software Engineer to join their Defence team in London. This role involves building cloud and edge computing solutions, delivering robust software, and collaborating with cross-functional teams. Candidates should be proficient in Python and familiar with modern depl ...

Senior Infrastructure Engineer: Build Scalable Cloud Systems

A leading fintech company in Greater London is seeking a Senior Software Engineer specialized in Infrastructure. The role involves deploying and maintaining software, automating deployment processes, and developing observability tools. Candidates should possess 5+ years of experience, a degree in a technical fie ...

Senior Platform Engineer (UK) Ownership & Impact

A leading tech company in the UK is searching for a Software Engineer to take ownership of critical projects and innovate within their data platform. The ideal candidate will have a strong background in software development, particularly with Python and Django. Responsibilities include re-architecting Elasticsea ...

Senior C# Architect – High Performance Pricing & Risk

A leading recruitment firm is looking for a Senior C# Software Engineer to design advanced pricing and risk platforms. The role involves collaborating with Trading and Quantitative teams, architecting high-performance systems, and promoting software engineering standards. Candidates should have strong C# and Pyt ...

Realtime Quant Frameworks Engineer: Scale Research Platforms

A financial technology company in London is seeking a Software Engineer for Realtime Quant Frameworks to ensure high performance and efficiency across their automated trading platform. The ideal candidate will have strong experience in software engineering, particularly with languages such as F# and Python, and ...

Senior Software Engineer – Client Compliance Platform

A leading financial information company in London is searching for a Senior Software Engineer to enhance its client compliance eligibility platform. The role involves collaborating with diverse teams to build resilient systems that ensure secure trading. Candidates should have over 5 years of experience in softw ...

Senior Software Engineer Client Eligibility Platform

A leading financial technology firm in London seeks a Senior Software Engineer for their Client Compliance Eligibility team. The role involves building and maintaining complex systems that ensure compliance in trading processes. Candidates should have extensive experience in software development, particularly in ...

Senior Data & GenAI Platform Architect

A global information and analytics company in Greater London is looking for a Senior Software Engineer II to enhance their generative AI platform. This role involves architecting and developing scalable AI services and guiding engineering standards. The ideal candidate has 5+ years in software engineering, stron ...

Senior Software Engineer — Fintech Platform (Remote)

A leading fintech company in London is looking for an experienced Software Engineer to join their innovative team. You will solve complex coding challenges, contribute to significant product designs, and collaborate within a cross-functional team. Ideal candidates have over 7 years of software engineering experi ...

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 ...

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 ...

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 ...

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 ...

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