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35 python developer jobs found in London

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London python developer
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Contract Spy
Feb 16, 2026
Duration not stated
AWS Cloud Engineer at G-Research, London, £Contract Rate
Contract Spy London, UK
AWS Cloud Engineer (Contract) We tackle the most complex problems in quantitative finance, by bringing scientific clarity to financial complexity. From our London HQ, we unite world-class researchers and engineers in an environment that values deep exploration and methodical execution — because the best ideas take time to evolve. Together we’re building a world-class platform to amplify our teams’ most powerful ideas. As part of our engineering team, you’ll shape the platforms and tools that drive high-impact research – designing systems that scale, accelerate discovery and support innovation across the firm. Take the next step in your career.   The role   In this role, you'll provide expertise in designing and operating cloud-native applications on AWS, enabling engineering teams to successfully build, test, and deploy their workloads. You'll establish patterns and best practices across container/serverless workflows and...
Contract Spy
Feb 12, 2026
Hourly/Freelance
Data Engineer - AI Trainer at DataAnnotation, Remote, £Hourly Rate
Contract Spy London, UK
Join the DataAnnotation team and contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and setting your own schedule. We are looking for a proficient Data Engineer to help advance AI development. As a member of DataAnnotation’s coding team, you’ll be part of a growing community of over 100,000 professionals — including front-end, back-end, full-stack, machine learning, and other engineers — who are driving real-world impact in AI development. Our platform offers an engaging blend of flexibility and challenge: you’ll work closely with state-of the art AI models to take on programming tasks that include creating and solving challenging coding problems, building beautiful apps with rich functionality, and synthesizing insights through data analysis and visualization. Your work directly contributes to refining intelligent systems that learn, adapt, and evolve. Some team members fit this work alongside a...
Contract Spy
Mar 05, 2026
Duration not stated
Senior Data Engineer - Energy Markets at The ProEx Group, London Area, £Contract Rate (Outside IR35)
Contract Spy London Area, United Kingdom
Senior Energy Markets Data Engineer   Location: London/Hybrid (3/4 Days in London Office) Reports to: Delivery Lead Level: Senior Manager / Lead Individual Contributor Contract: Contract – Outside IR35   Please note – only candidates with recent Energy Markets experience will be considered for this role.   Role Purpose   We are seeking an exceptional Senior / Lead Data Engineer to design, build, and govern enterprise-grade data platforms that power analytics, AI, and operational decision-making. This role blends hands-on engineering , technical architecture , and stakeholder leadership . You will work across business and technology teams to translate complex requirements into scalable, secure, and high-quality data products.   Key Responsibilities   Data Engineering & Platform Delivery Design, build, and maintain end-to-end data integration pipelines...
Contract Spy
Mar 04, 2026
Duration not stated
Business Analyst - Generative AI (Banking/AML) at Emagine Consulting, London, £500-£600 per day
£500 - £600 per day
Contract Spy London, UK
The role will be working within our Technology Change practice. To support this journey, we are seeking a Business Analyst with strong GenAI expertise who can operate at the intersection of business operations, data, and emerging technology. Business Analyst - Generative AI (Banking/AML) London- (Hybrid) X3 days on-site per week £500 - £600 emagine is a high-end professional services consultancy and solutions firm Specialising in providing business and technology services to the financial services sector, we power progress, solve challenges and deliver real results through tailored high-end consulting services and solutions. We have created a culture of openness and integrity by building genuine and strong relationships and partnerships, enabling us to be uncompromising in our dedication in delivering the optimal service for our clients. Our commitment is not just towards our clients but we aim to foster a positive and equitable working environment...
Contract Spy
Mar 04, 2026
6 Months or more
Senior Technical Business Analyst at MUFG Investor Services, London, 6 Months, £Contractor Rate
Contract Spy London, England, United Kingdom
What’s in it for you to join MUFG Investor Services?  Take a look at our careers site and you’ll find everything you’d expect from a career with the fastest-growing business at one of the world’s largest financial groups. Now take another look. Because it’s how we defy expectations that really defines us. You’ll feel that difference in all kinds of ways. Our vibrant CULTURE. Connected team. Love of innovation, laser client focus, and next-level LEARNING & DEVELOPMENT. Oh, and we really walk the talk when it comes to HYBRID WORKING.    So, why settle for the ordinary? Apply now for a Brilliantly Different career. We thank all candidates for applying; however, only those proceeding to the interview stage will be contacted. Job Description As a Technical Business Analyst (TBA) , you will play a critical role in bridging the gap between business requirements and technical solutions for our trading platform product and private equity...
Contract Spy
Mar 03, 2026
Duration not stated
Senior Business Analyst at SEFE Marketing & Trading Ltd, London, £Contractor Rate
Contract Spy London, England, United Kingdom
IN SHORT We’re looking for a Business Analyst to join our IT team supporting a front‑office derivatives trading desk. In this business‑facing role, you’ll work directly with traders and senior stakeholders—up to C‑suite level—to analyse requirements, shape technical solutions, and support frequent, high‑quality releases. You’ll join a trusted, high‑performing team that delivers change continuously and plays a key role in enabling revenue through robust analytic tooling. What Will You Do Work with derivatives traders and IT to define requirements, propose solutions, broker decisions, and drive consensus. Collaborate with developers to deliver enhancements and support UAT. Provide third‑line support to traders and help resolve complex issues. Partner closely with front office teams to ensure technology solutions maximise business value and align with trading needs. Analyse processes, identify improvements, and recommend...
Contract Spy
Mar 03, 2026
Duration not stated
AI Engineer at Deloitte, London, 6 Months, £Contract Rate
Contract Spy London, UK
  Job Title: AI Engineer (contract) Location: London Hybrid. Travel to the London office 2 days a week Duration: 6 months Contract Start Date: March 2026   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role We are looking for a AI Engineer to join our Data and AI Team supporting internal service delivery transformation projects across Tax and Legal. You will be a Python and Azure expert in designing and building cutting-edge generative AI solutions for complex challenges. You will report to the...
Contract Spy
Mar 03, 2026
Duration not stated
Front Office Business Analyst - FX Trading Technology at Emagine Consulting, London, £600-£700 per day
£600 - £700 per day
Contract Spy London, UK
We are currently looking for dynamic individual to join our Technology Practice as a Technical Business Analysts; delivering key projects across as part of our Front Office change team. Front Office Business Analyst - FX Trading Technology London (Hybrid) x3 Days on-site £600- £700 emagine is a high-end professional services consultancy and solutions firm Specialising in providing business and technology services to the financial services sector, we power progress, solve challenges and deliver real results through tailored high-end consulting services and solutions. We have created a culture of openness and integrity by building genuine and strong relationships and partnerships, enabling us to be uncompromising in our dedication in delivering the optimal service for our clients. Our commitment is not just towards our clients but we aim to foster a positive and equitable working environment with our consultants and colleagues which stems from our core...
Contract Spy
Mar 03, 2026
6 Months or more
Senior Technical Business Analyst at MUFG Investor Services, London, 6 Months, £Contractor Rate
Contract Spy London, UK
Company Description What’s in it for you to join MUFG Investor Services? Take a look at our careers site and you’ll find everything you’d expect from a career with the fastest-growing business at one of the world’s largest financial groups. Now take another look. Because it’s how we defy expectations that really defines us. You’ll feel that difference in all kinds of ways. Our vibrant CULTURE. Connected team. Love of innovation, laser client focus, and next-level LEARNING & DEVELOPMENT. Oh, and we really walk the talk when it comes to HYBRID WORKING. So, why settle for the ordinary? Apply now for a Brilliantly Different career. We thank all candidates for applying; however, only those proceeding to the interview stage will be contacted. #LI-Hybrid Job Description As a Technical Business Analyst (TBA) , you will play a critical role in bridging the gap between business requirements and technical solutions for our...
Contract Spy
Mar 02, 2026
Duration not stated
Operations Business Analyst at Emagine Consulting, London, £Contract Rate
Contract Spy London, UK
We are currently seeking an experienced Business Analyst to support major strategic transformation initiatives within our Corporate & Investment Banking division. This role focuses on facilitating AI-led transformation initiatives within Corporate & Investment Banking (CIB), optimizing operational processes across various banking sectors Operations Business Analyst London - 3 days onsite £550 - 650 p/d Inside IR35 emagine is a high-end professional services consultancy and solutions firm. Specialising in delivering business and technology services to the financial services sector, we power progress, solve challenges, and achieve real results through tailored, high xe2 end consulting solutions. We have built a culture of openness and integrity through genuine relationships and strong partnerships. This enables us to remain uncompromising in our commitment to delivering exceptional service for our clients. Equally, we foster a positive and inclusive...
Contract Spy
Feb 27, 2026
Duration not stated
IAM Engineer at Softcat, London/Remote, £Day Rate
Contract Spy Hybrid (London, UK)
Would you like to kick start your career in a supportive, collaborative and innovative company? Do you enjoy working as part of an enthusiastic, passionate, and collaborative team?     Join our IT Team!    Join a dynamic team at Softcat, one of the UK's leading IT infrastructure providers and a FTSE 250 listed company. Our team is passionate about delivering secure, scalable identity and access management solutions, supporting both internal operations and customer environments.   As an IAM Engineer, you will design, implement, and maintain identity and access management solutions, ensuring robust security and seamless user experiences. You'll work closely with stakeholders across IT, security, and business units to automate and optimise IAM processes, leveraging modern technologies and best practices.      As the IAM Engineer, you'll be responsible...
Contract Spy
Feb 25, 2026
up to 6 Months
Senior Backend Engineer at Pulselive, London Kennington, 3 Months+, £400-£500 per day (Outside IR35)
£400 - £500 per day
Contract Spy Kennington, London, UK
Senior Backend Engineer - Contractor (Outside of IR35) Senior Software Engineer – Java (Contract - Outside of IR35) Duration: 3 Months Plus Start Date: ASAP Day Rate: £400 - 500 per day   As a  Senior Software Engineer (Java) – Contractor  at Pulselive, you’ll be focused on delivering robust, high-performance backend services and APIs that power digital experiences for millions of sports fans globally. This role is ideal for an experienced, hands-on engineer with strong Java and Spring expertise who thrives in a collaborative and fast-paced delivery environment. You’ll work closely with cross-functional teams to build, integrate, and optimize systems that handle real-time sports data, video, and live commentary. This position is project- and delivery-focused, with no line management or people-leadership responsibilities required. Key Responsibilities: Design and develop scalable backend systems...
Contract Spy
Feb 25, 2026
Duration not stated
Front Office Business Analyst - FX Trading Technology at Emagine Consulting, London, £600-£700 per day
£600 - £700 per day
Contract Spy London, UK
We are currently looking for dynamic individual to join our Technology Practice as a Technical Business Analysts; delivering key projects across as part of our Front Office change team. Front Office Business Analyst - FX Trading Technology London (Hybrid) x3 Days on-site £600- £700 emagine is a high-end professional services consultancy and solutions firm Specialising in providing business and technology services to the financial services sector, we power progress, solve challenges and deliver real results through tailored high-end consulting services and solutions. We have created a culture of openness and integrity by building genuine and strong relationships and partnerships, enabling us to be uncompromising in our dedication in delivering the optimal service for our clients. Our commitment is not just towards our clients but we aim to foster a positive and equitable working environment with our consultants and colleagues which stems from our core...
Contract Spy
Feb 25, 2026
Duration not stated
Senior Software Engineering Contractor at Aspect Capital, London Area, £Contract Rate
Contract Spy London Area, United Kingdom
Aspect Capital is an award-winning systematic hedge fund based in London, UK that manages over $8 billon of client assets, where technology plays a critical role in the success of the business.   We are looking for a Senior Software Engineering Contractor to join our Software Development team to work on our Software Development platform for 12 months.   Job requirements: 5+ years of enterprise Java development experience Experience with managing technical projects e.g. planning timelines, milestones and deliverables Strong enterprise Java (with Spring) experience Working proficiency of Python and Javascript Experience with Maven, Docker and CI pipelines   Job responsibilities: Aspect’s Software Development Team are a team of 12 who develop and support the main trading software for Aspect. This ranges from front office trading, to back and middle office. This core project entails working on Aspect’s Software...
Contract Spy
Feb 24, 2026
Duration not stated
Operations Business Analyst at Emagine Consulting, London, £Contract Rate
Contract Spy London, UK
We are currently seeking an experienced Business Analyst to support major strategic transformation initiatives within our Corporate & Investment Banking division. This role focuses on facilitating AI-led transformation initiatives within Corporate & Investment Banking (CIB), optimizing operational processes across various banking sectors Operations Business Analyst London - 3 days onsite £550 - 650 p/d Inside IR35 emagine is a high-end professional services consultancy and solutions firm. Specialising in delivering business and technology services to the financial services sector, we power progress, solve challenges, and achieve real results through tailored, high xe2 end consulting solutions. We have built a culture of openness and integrity through genuine relationships and strong partnerships. This enables us to remain uncompromising in our commitment to delivering exceptional service for our clients. Equally, we foster a positive and inclusive...
Contract Spy
Feb 24, 2026
6 Months or more
AI Engineer at Deloitte, London, 6 Months, £Contract Rate
Contract Spy London, UK
  Job Title: AI Engineer (contract) Location: London Hybrid. Travel to the London office 2 days a week Duration: 6 months Contract Start Date: March 2026   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role We are looking for a AI Engineer to join our Data and AI Team supporting internal service delivery transformation projects across Tax and Legal. You will be a Python and Azure expert in designing and building cutting-edge generative AI solutions for complex challenges. You will report to the...
Contract Spy
Feb 24, 2026
6 Months or more
Senior Technical Business Analyst at MUFG Investor Services, London, 6 Months, £Contractor Rate
Contract Spy London, UK
Company Description What’s in it for you to join MUFG Investor Services? Take a look at our careers site and you’ll find everything you’d expect from a career with the fastest-growing business at one of the world’s largest financial groups. Now take another look. Because it’s how we defy expectations that really defines us. You’ll feel that difference in all kinds of ways. Our vibrant CULTURE. Connected team. Love of innovation, laser client focus, and next-level LEARNING & DEVELOPMENT. Oh, and we really walk the talk when it comes to HYBRID WORKING. So, why settle for the ordinary? Apply now for a Brilliantly Different career. We thank all candidates for applying; however, only those proceeding to the interview stage will be contacted. #LI-Hybrid Job Description As a Technical Business Analyst (TBA) , you will play a critical role in bridging the gap between business requirements and technical solutions for our...
Contract Spy
Feb 23, 2026
Duration not stated
Senior Splunk Platform Engineer at Emagine Consulting, London, £600-£650 per day
£600 - £650 per day
Contract Spy London, UK
We are seeking an experienced Senior Splunk Engineer to take ownership of a large-scale, distributed Splunk environment supporting high-volume corporate banking and payments operations. Senior Splunk Platform Engineer (Payments / Banking) London- (Hybrid) X3 days on-site per week £600- £650 emagine is a high-end professional services consultancy and solutions firm Specialising in providing business and technology services to the financial services sector, we power progress, solve challenges and deliver real results through tailored high-end consulting services and solutions. We have created a culture of openness and integrity by building genuine and strong relationships and partnerships, enabling us to be uncompromising in our dedication in delivering the optimal service for our clients. Our commitment is not just towards our clients but we aim to foster a positive and equitable working environment with our consultants and colleagues which stems from...
Contract Spy
Feb 20, 2026
up to 6 Months
AWS Security Engineer at With Intelligence, London, 3 Months initial, £Contract Rate (Outside IR35)
Contract Spy London, UK
AWS Security & Vulnerability Remediation Engineer (DevSecOps / Cloud Security) 3 month initial contract outside IR35 Role Summary We are looking to hire an AWS-focused security engineer to lead the remediation of cloud and application vulnerabilities across our AWS environment. You will work closely with Developers, Data Engineers, and our AWS Security Lead to validate findings, prioritise risk, implement fixes, and strengthen security controls. AWS security is your primary technical skill; a strong understanding of software development, DevSecOps practices, and vulnerability management is essential. Key Responsibilities Own end-to-end remediation of AWS and workload vulnerabilities: confirm findings, assess impact, prioritise actions, and track through to closure. Partner with Developers and Data Engineers to implement secure fixes in code, infrastructure, and delivery pipelines (IaC, containers, serverless, OS/packages). Work with the AWS...
Contract Spy
Feb 18, 2026
Duration not stated
Operations Business Analyst at Emagine Consulting, London, £550-£650 per day
£550 - £650 per day
Contract Spy London, UK
We are currently seeking an experienced Business Analyst to support major strategic transformation initiatives within our Corporate & Investment Banking division. This role focuses on facilitating AI-led transformation initiatives within Corporate & Investment Banking (CIB), optimizing operational processes across various banking sectors Operations Business Analyst London – 3 days onsite £550 - 650 p/d Inside IR35   emagine is a high-end professional services consultancy and solutions firm. Specialising in delivering business and technology services to the financial services sector, we power progress, solve challenges, and achieve real results through tailored, high‑end consulting solutions. We have built a culture of openness and integrity through genuine relationships and strong partnerships. This enables us to remain uncompromising in our commitment to delivering exceptional service for our clients. Equally, we foster a positive...
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