Lead Software Engineer Python Java Jobs in London, UK

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Senior Low Latency Rust Engineer

Senior Low Latency Rust Engineer 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 deployin ...

Senior Low Latency Rust Engineer

Senior Low Latency Rust Engineer 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 deployin ...

Senior AI Engineer GCP / Machine Learning / AI Agents

Senior AI Engineer - GCP / Machine Learning / AI Agents £75k - £80k + Bonus - Permanent Remote UK - Flexible remote working model - Occasional travel to the South East / South London region Must be Eligible to work in the UK - Cannot Provide Sponsorship We’re currently supporting a large con ...

Security Engineer

Location: London / Bristol / Edinburgh (This is a Hybrid role) Reporting to: Engineering Manager / Head of Security Engineering Are you a collaborative Security Engineer who wants to protect the infrastructure driving the global shift to clean, electrified energy? We are looking for a consu ...

Forward Deployed Engineer

We’re partnered with a globally renowned applied AI company building end-to-end autonomous software agents designed to fundamentally change how engineering teams operate. Their products combine advanced reasoning models with developer-native tooling to enable engineers to focus on higher-leverage work and ...

Security Engineer

Location: London / Bristol / Edinburgh (This is a Hybrid role) Reporting to: Engineering Manager / Head of Security Engineering Are you a collaborative Security Engineer who wants to protect the infrastructure driving the global shift to clean, electrified energy? We are looking for a consu ...

Sr. Engineer, Platform

Job Description : About News Corp News Corp is a global, diversified media and information services company focused on creating and distributing authoritative and engaging content to consumers throughout the world. The Company comprises leading busin ...

Sr. Engineer, Platform

Job Description : About News Corp News Corp is a global, diversified media and information services company focused on creating and distributing authoritative and engaging content to consumers throughout the world. The Company comprises leading busin ...

Principal Engineer, BCG Expand, London London

Principal Engineer, BCG Expand, London - London, United Kingdom Who We Are BCG Expand is a specialist firm providing unique data-driven business intelligence as a trusted advisor to senior executives across the worlds leading financial services firms to help them to operat ...

Java Developer – Front Office / Trading Systems

Java Developer – Front Office / Trading Systems Join MARGO in the UK (London) – Perm & Contracting Opportunity* MARGO is a tech-native consultancy delivering high value-added IT expertise to the financial services industry. We specialise in complex software engineeri ...

Lead Firmware Engineer — Embedded Systems Leader (Hybrid)

Brompton Bicycle is seeking a Lead Firmware Engineer to oversee the technical direction and delivery of embedded software for their Electric product line. You will manage the firmware architecture, lead a team of engineers, and collaborate across teams to align on milestones. The ideal candidate has extensive ex ...

Lead Firmware Engineer — Embedded Systems Leader (Hybrid)

Brompton Bicycle is seeking a Lead Firmware Engineer to oversee the technical direction and delivery of embedded software for their Electric product line. You will manage the firmware architecture, lead a team of engineers, and collaborate across teams to align on milestones. The ideal candidate has extensive ex ...

Senior ETRM Application Developer

Overview Castleton Commodities International (CCI) is hiring a Senior ETRM Application Developer to expand our Commodities Trading Application Development team. This role sits at the center of our end-to-end trading lifecycle and is responsible for building and enhancing the applications and inte ...

Senior ETRM Application Developer

Senior ETRM Application Developer page is loaded## Senior ETRM Application Developerlocations: London, UKtime type: Full timeposted on: Posted Todayjob requisition id: R1285Castleton Commodities International (CCI) is hiring a Senior ETRM Application Developer to expand our Commodities Trading Applicatio ...

Senior ETRM Application Developer

Senior ETRM Application Developer page is loaded## Senior ETRM Application Developerlocations: London, UKtime type: Full timeposted on: Posted Todayjob requisition id: R1285Castleton Commodities International (CCI) is hiring a Senior ETRM Application Developer to expand our Commodities Trading Applicatio ...

Senior ETRM Application Developer

Overview Castleton Commodities International (CCI) is hiring a Senior ETRM Application Developer to expand our Commodities Trading Application Development team. This role sits at the center of our end-to-end trading lifecycle and is responsible for building and enhancing the applications and inte ...

Senior QA Test Engineer FinTech

Senior QA Test Engineer (Manual Testing) 12 month FTC London / WFH to £75kDo you have strong manual testing experience within a finance environment?You could be progressing your career in a senior, hands-on role at a global market data provider whilst enjoying a range of perks and benefit ...

Senior QA Test Engineer FinTech

Senior QA Test Engineer (Manual Testing) 12 month FTC London / WFH to £75kDo you have strong manual testing experience within a finance environment?You could be progressing your career in a senior, hands-on role at a global market data provider whilst enjoying a range of perks and benefit ...

Java (Kotlin) Developer (Agile, Test Driven) – VP

For additional information, please review .**Java (Kotlin) Developer (Agile, Test-Driven) – VP**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 operatin ...

FRTB Market Risk Quant Consultant Contract 1Y in London Quant Capital

FRTB Market Risk Quant Consultant - Contract 1Y London, United Kingdom Posted 10 months ago This is a snippet of the job description. To read the full text, please click on the Apply Now link. Tech Stack Java C Contract SQL R ...

AI and Python Coding Bootcamp (Newham)

Junior AI Developer Programme Job Support Included Complete online training designed to help you enter junior AI and developer roles. Study part-time, build coding and AI fundamentals, and receive structured job support to help you secure your first role. The Programme This 10 14 week online programme c ...

MMM, Python, PYMC Bayesian Data Scientist

LeadingpharmaceuticalclientnowrequiresaSeniorDataScientisttodrivemarketingeffectivenessviamarketingmixmodellingandothermodels. Thisrolewilloverseedatacollection,extraction,manipulation,analysisandvalidationensuringdataisreadyformodelling. YouwillworkcloselywiththeDataScienceteamtobuildbasemodelsaccordingtoprojec ...

AI and Python Coding Bootcamp (Newham)

Junior AI Developer Programme – Job Support Included Complete online training designed to help you enter junior AI and developer roles. Study part-time, build coding and AI fundamentals, and receive structured job support to help you secure your first role. The Programme This 10–14 week o ...

AI and Python Coding Bootcamp (Newham)

Junior AI Developer Programme – Job Support IncludedIncrease your chances of an interview by reading the following overview of this role before making an application.Complete online training designed to help you enter junior AI and developer roles. Study part-time, build coding and AI fundamentals, a ...

Data Analyst (Python and Power BI)

Data AnalystRead the overview of this opportunity to understand what skills, including and relevant soft skills and software package proficiencies, are required.Fixed term contract until 31 December 2026 Full time, 35 hours per week Salary: £34,800 to £36 ...

AI and Python Coding Bootcamp (Newham)

Junior AI Developer Programme – Job Support IncludedIncrease your chances of an interview by reading the following overview of this role before making an application.Complete online training designed to help you enter junior AI and developer roles. Study part-time, build coding and AI fundamentals, a ...

12 Month Internship FX IT Developer

We are seeking a Developer with strong communication and customer-facing skills, who is eager to learn and grow within the Financial Services sector. This role offers the chance to work closely with front office users, including traders, risk analysts, and operational staff, providing significant exposure ...

Embedded Systems Engineer

Embedded Software Engineer (Battery Systems) Full-time At Allye, our innovative smart energy storage systems are redefining the way batteries are designed, connected, distributed, and utilised to the grid. Flexible and modular, our systems are intelligently managed, making ene ...

AI Engineer (Google)

This is a hands‑on engineering role in a forward‑thinking team driving AI adoption at enterprise scale. You will work across the AI lifecycle — from experimentation and prototyping to production deployment — to deliver innovative solutions that transform customer experiences, optimise operations, and enabl ...

Staff and Team Lead, Onyx Application Engineering in London GSK

Overview Staff and Team Lead, Onyx Application Engineering — London, United Kingdom Responsibilities Developing and deploying applications in a cloud... Required Skills Developing and deploying applications in a cloud... Additional Op ...

Staff & Team Lead — Cloud Applications Engineer (London)

Overview Staff and Team Lead, Onyx Application Engineering — London, United Kingdom Responsibilities Developing and deploying applications in a cloud... Required Skills Developing and deploying applications in a cloud... Additional Op ...

L2 Support Engineer in London N Consulting Ltd

L2 Support Engineer London, United Kingdom Tech stack Splunk Java Required Core Skills Java DB Nice to have skills Splunk Areas of responsibility Excellent communicat ...

Senior Software Engineer II Wise for Enterprise Banks

Job DescriptionAbout the role We’re looking for a Senior Software Engineer II to join our Wise for Banks team and help shape the technical direction of the systems powering Wise’s global payment network. In this role, you’ll operate at the intersection o ...

Senior Software Engineer II Wise for Enterprise Banks

Job DescriptionAbout the role We’re looking for a Senior Software Engineer II to join our Wise for Banks team and help shape the technical direction of the systems powering Wise’s global payment network. In this role, you’ll operate at the intersection o ...

Senior Application Security Engineer — Build Secure SDLC & Guardrails

An innovative Ed-Tech company in Greater London is seeking an experienced Security Engineer to own application and product security. You will partner with engineering teams, lead threat modeling, and enhance secure development processes. The ideal candidate should have strong experience in Python/Django and a so ...

Lead Frontend & Product Engineer — Climate Tech

A climate-tech company is seeking a Lead Product Engineer with strong frontend focus and full-stack capability. The role involves defining frontend architecture, building user-friendly features, and collaborating with teams to shape product direction. Candidates should have extensive experience with React, Pytho ...

Remote Senior Backend Architect (Multitenancy & IAM)

A tech learning company seeks a Senior Backend Engineer to lead the development of scalable multitenant infrastructure. The role emphasizes strong architectural principles, expertise in statically typed languages, and readiness to master Python 3.x. Enjoy a fully remote, flexible work environment with competitiv ...

Senior Backend Engineer – Customer Auth (Fintech)

Funding Circle UK is looking for a Senior Engineer – Customer Auth to lead the development of security and identity platforms. You will create and maintain authentication systems while mentoring junior engineers. Ideal candidates have expertise in Python, distributed systems, and technologies like AWS and Kubern ...

Senior AWS Platform Engineer Data & Pipelines

Vallum Associates is seeking a Senior Platform Engineer (AWS) to lead a major project in London. This hybrid role involves designing AWS platform architecture, delivering infrastructure solutions, and ensuring effective data migration. The ideal candidate will have strong hands-on experience with Terraform, CI/C ...

Lead ML Engineer Build Responsible AI (Hybrid)

A leading AI company in the United Kingdom is seeking a Lead Machine Learning Engineer to drive complex AI projects. The role focuses on technical leadership, system design, and team management. Ideal candidates are experts in Python, cloud solutions, and can balance innovation with risk management. Competitive ...

Senior Machine Learning Engineer & Technical Leader Hybrid

A leading AI technology company in Greater London seeks a Lead Machine Learning Engineer to spearhead complex AI projects. You will set the technical direction, manage high-risk environments, and mentor engineers. Ideal candidates have strong Python skills, experience with major cloud solutions, and a passion fo ...

ML Engineer — Production Scale, Real Time Rewards

A fast-growing tech company in the UK seeks a Machine Learning Engineer to lead the delivery of impactful ML solutions. The ideal candidate will have a strong background in statistics and programming, specifically in Python and SQL. This role requires technical leadership capabilities and effective communication ...

Automation Engineer: AI Driven Internal Tools & Workflows

A leading cybersecurity firm in Greater London is seeking an Automation Engineer to lead the development of internal tools and AI-powered workflows. You will design scalable technical solutions, collaborate with engineering and operational teams, and improve efficiency across the organization. The role demands s ...

Mission Critical ML Engineer (Hybrid)

MI6 is seeking a Machine Learning Engineer in Greater London to lead initiatives in AI for national security. The role involves designing and deploying ML models, collaborating with multidisciplinary teams, and mentoring junior engineers. The ideal candidate has experience in model lifecycle management, MLOps to ...

Mission Critical ML Engineer (Hybrid)

MI6 is seeking a Machine Learning Engineer in Greater London to lead initiatives in AI for national security. The role involves designing and deploying ML models, collaborating with multidisciplinary teams, and mentoring junior engineers. The ideal candidate has experience in model lifecycle management, MLOps to ...

ML Engineer — Production Scale, Real Time Rewards

A fast-growing tech company in the UK seeks a Machine Learning Engineer to lead the delivery of impactful ML solutions. The ideal candidate will have a strong background in statistics and programming, specifically in Python and SQL. This role requires technical leadership capabilities and effective communication ...

Senior Machine Learning Engineer & Technical Leader Hybrid

A leading AI technology company in Greater London seeks a Lead Machine Learning Engineer to spearhead complex AI projects. You will set the technical direction, manage high-risk environments, and mentor engineers. Ideal candidates have strong Python skills, experience with major cloud solutions, and a passion fo ...

Lead ML Engineer Build Responsible AI (Hybrid)

A leading AI company in the United Kingdom is seeking a Lead Machine Learning Engineer to drive complex AI projects. The role focuses on technical leadership, system design, and team management. Ideal candidates are experts in Python, cloud solutions, and can balance innovation with risk management. Competitive ...

Solutions Engineer (Remote, UK — London Metro)

Job Title: Solutions EngineerLocation: London metro area (Remote) About FusionAuth FusionAuth is a developer‑first customer identity platform that gives engineering teams complete control over authentication, authorization, and user management. We serve organizations across B2C, B2B, ...

Solutions Engineer (Remote, UK — London Metro)

Job Title: Solutions Engineer Location: London metro area (Remote) About FusionAuth FusionAuth is a developer-first customer identity platform that gives engineering teams complete control over authentication, authorization, and user management. We serve organizations across B2C, ...

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