9 of 9 Contract Python Developer Jobs in London

Python Developer - sought by leading investment bank based in Canary Wharf - Contract - Hybrid Key Responsibilities Develop and optimize Python calculators for: Historical index back-testing Daily pricing and index computation Weighting and rebalancing logic Attribution and decomposition analytics Build robust APIs using FastAPI or Flask Collaborate directly with business users to gather requirements and iterate quickly Implement … testing, versioning, and data validation processes Ensure integration with internal data sources and reporting tools Required Skills 5+ years of Python development experience, ideally in financial services or commodities Strong proficiency in Pandas , NumPy , and time-series data manipulation Proven experience with FastAPI or Flask Familiarity with large datasets and real-time data pipelines Excellent debugging, profiling, and performance More ❯

I am currently working with a London-based Tier 1 investment bank who are actively seeking a Python Developer on a long-term contract basis. What you'll need to succeed Strong Python programming experience within Financial Services - Mandatory Good understanding of quantitative finance Good experience developing and optimising Python-based calculators and models. Strong experience More ❯

I am currently working with a London-based Tier 1 investment bank who are actively seeking a Python Developer on a long-term contract basis. What you'll need to succeed Strong Python programming experience within Financial Services - Mandatory Good understanding of quantitative finance Good experience developing and optimising Python-based calculators and models. Strong experience More ❯

Job Description: We are looking for a skilled Python Developer to design, develop, and maintain scalable applications and data-driven solutions. The role involves building APIs, integrating systems, and optimizing backend processes. Key Responsibilities: Develop and maintain Python applications, APIs, and scripts. Work with databases (SQL/NoSQL) and ensure data integrity. Collaborate with cross-functional teams … to translate requirements into technical solutions. Optimize code for performance, scalability, and security. Support integration with cloud platforms, automation, or data pipelines. Required Skills & Experience: Strong proficiency in Python and related frameworks (Django, Flask, FastAPI). Experience with REST APIs, microservices, and backend development. Knowledge of databases (PostgreSQL, MySQL, MongoDB). Familiarity with cloud platforms (AWS/Azure/ More ❯

The Role A leading global financial institution is seeking a Python Developer (Contract) to join its Commodities Technology team. This group supports a fast-growing Commodities Index business that spans Oil, Gas, Power, Agriculture, and Metals, providing advanced analytics and tools for structuring and trading. You will play a key role in designing and delivering a new index … The position offers direct business interaction, exposure to real-world trading problems, and the opportunity to build robust, high-performance solutions in a dynamic environment. Responsibilities Develop and enhance Python-based models for: Historical index back-testing Daily pricing and index level generation Weighting and rebalancing logic Basket decomposition and attribution analytics Design and deploy scalable APIs (Flask/… gather requirements and iterate quickly on solutions. Implement testing frameworks, version control, and data validation processes. Integrate with market data, storage systems, and reporting platforms. Required Skills 5+ years' Python development experience, ideally within trading, risk, or financial services. Strong background with Pandas, NumPy, and data science libraries . Hands-on experience with Flask or FastAPI for API development. More ❯

I am currently working with a London-based Tier 1 investment bank who are actively seeking a Python Developer on a long-term contract basis. What you'll need to succeed Strong Python programming experience within Financial Services - Mandatory Good understanding of quantitative finance Good experience developing and optimising Python-based calculators and models. Strong experience More ❯

This is a fantastic opportunity to work a remote Senior Fullstack Developer for a major pharmaceutical company on a long term contract, outside IR35. The key skills required for this Senior Fullstack Developer are: Python React Typescript AI (desirable AWS SQL Kubernetes (desirable) If you do have the relevant experience for this remote, outside IR35 Senior Fullstack … Developer role, please do send through your CV. More ❯

A well-established business is looking for an accomplished Software Engineer with expert Python skills to join its organisation. Please note, this role is Outside IR35. The company embraces hybrid and flexible working so you will be able to work fully remotely, with occasional visits (perhaps once per month) to the office in London. Web, software, and AI-enabled … technology are fundamental to the success of the business so you must have proven experience of developing great software in Python and an interest in adopting cutting-edge technology. In order to be suitable for this Lead Software Engineer role you must be an accomplished developer with a passion for technology and desire to mentor a team. You … will hold proven experience delivering SaaS projects in Python and will be keenly interested in AI and ML. Experience with AWS and data engineering would be advantageous to your application. In this role of significant responsibility, you will be both a Lead Developer and guide 2 in-house developers and an offshore team. You will act as a More ❯

engineer £475 Outside ir35 2 days onsite to your local office - London, Manchester, Cardiff Requirements Must be able to go onsite x2 a week SC Clearance (valid) Skillset required Python Django More ❯