76 to 100 of 105 Python Developer Jobs in the City of London

Senior Backend Engineer (Python/Django) ClimateTech Start-up | London Bridge | 3 days onsite 8595k + early-stage equity Tired of being just another engineer? Heres your chance to be the third backend hire at a fast-growing ClimateTech start-up making a real dent in global carbon emissions. At Minimum, youll: Solve hard technical challenges from scaling data … stage start-up shipping fast, making decisions that matter, and helping shape the product See direct impact your code helps global organisations decarbonise What youll bring: 510 years with Python (ideally Django) Strong problem-solving & system design skills Start up mindset fast, collaborative, comfortable with ambiguity Passion for clean tech + building meaningful products Why join? 8595k + early … stage equity 28 days holiday The chance to leave your mark on a product that fights climate change Not just another Python role. This is your opportunity to build, shape, and solve with impact. Apply now (dont worry if your CV isnt perfect - well sort that later). martin@mnrecruit.net 07859 911 079 - Happy for you to call me More ❯

Senior Backend Engineer (Python/Django) 🌍 ClimateTech Start-up | London Bridge | 3 days onsite 💰 £85–95k + early-stage equity Tired of being just another engineer? Here’s your chance to be the third backend hire at a fast-growing ClimateTech start-up making a real dent in global carbon emissions. At Minimum , you’ll: ✅ Solve hard technical challenges … up – shipping fast, making decisions that matter, and helping shape the product ✅ See direct impact – your code helps global organisations decarbonise What you’ll bring: 🔹 5–10 years with Python (ideally Django) 🔹 Strong problem-solving & system design skills 🔹 Start up mindset – fast, collaborative, comfortable with ambiguity 🔹 Passion for clean tech + building meaningful products Why join? ✨ £85–95k + … early-stage equity ✨ 28 days holiday ✨ The chance to leave your mark on a product that fights climate change Not just another Python role. This is your opportunity to build, shape, and solve with impact. 👉 Apply now (don’t worry if your CV isn’t perfect - we’ll sort that later). martin@mnrecruit.net 07859 911 079 - Happy for More ❯

Senior Backend Engineer (Python/Django) 🌍 ClimateTech Start-up | London Bridge | 3 days onsite 💰 £85–95k + early-stage equity Tired of being just another engineer? Here’s your chance to be the third backend hire at a fast-growing ClimateTech start-up making a real dent in global carbon emissions. At Minimum, you’ll: ✅ Solve hard technical challenges … up – shipping fast, making decisions that matter, and helping shape the product ✅ See direct impact – your code helps global organisations decarbonise What you’ll bring: 🔹 5–10 years with Python (ideally Django) 🔹 Strong problem-solving & system design skills 🔹 Start up mindset – fast, collaborative, comfortable with ambiguity 🔹 Passion for clean tech + building meaningful products Why join? ✨ £85–95k + … early-stage equity ✨ 28 days holiday ✨ The chance to leave your mark on a product that fights climate change Not just another Python role. This is your opportunity to build, shape, and solve with impact. 👉 Apply now (don’t worry if your CV isn’t perfect - we’ll sort that later). martin@mnrecruit.net 07859 911 079 - Happy for More ❯

maintain robust data pipelines. Integrate and manage market data feeds. Optimise data storage and retrieval processes for efficiency. Enhance and create advanced data visualisation applications. Requirements: Proficient in Software Python Development. 3-5 years experience in software engineering Experience with libraries/frameworks such as Pandas, Numpy, Scipy, etc. Skilled in data pipeline orchestration management libraries (e.g., Airflow, Prefect More ❯

the tools, frameworks, and processes we use • Taking part in code reviews and sharing ideas with the team • Continuously improving how we work in an Agile environment Tech stack Python | FastAPI | Django | AWS | Kubernetes | Terraform | PostgreSQL | OpenSearch | GitHub What we’re looking for • Strong experience building backend systems, ideally with Python • Good understanding of databases, data structures and More ❯

We are currently seeking a Python Quant Developer to join a global energy trading firm. The role will sit in the Trading Optimisation team which is responsible for optimisation models across all desks, with a heavy emphasis on Power, Gas and LNG. In this role you will be responsible for implementing quantitative models to support a team of … analysts in development practices. There will also be a focus on modernising and enhancing some of the legacy applications which are used by the group, all of which are Python based. Key Skills Strong Object-Oriented Python Programming Understanding of Algo's and quant models. Excellent database knowledge, including SQL and MongoDB API Frameworks (Flask, FastAPI) Prior experience More ❯

We are currently seeking a Python Quant Developer to join a global energy trading firm. The role will sit in the Trading Optimisation team which is responsible for optimisation models across all desks, with a heavy emphasis on Power, Gas and LNG. In this role you will be responsible for implementing quantitative models to support a team of … analysts in development practices. There will also be a focus on modernising and enhancing some of the legacy applications which are used by the group, all of which are Python based. Key Skills Strong Object-Oriented Python Programming Understanding of Algo's and quant models. Excellent database knowledge, including SQL and MongoDB API Frameworks (Flask, FastAPI) Prior experience More ❯

in AI-driven automation software. You’ll join a team dedicated to pushing the boundaries of what’s possible in the trading world, using innovation to drive real results. Python AI/API Engineer – London What you will do Maintain and develop the AI offering, pioneering innovative approaches to achieve the company's vision. For example, integrating cutting-edge … and participating in code reviews. Keep abreast of new & developing technologies - championing/incorporating when appropriate. What you’ll need to succeed Minimum of 3+ years of experience with Python and major cloud providers (AWS, Azure, or GCP). Proven experience in building Rest APIs with frameworks such as Flask/FastAPI. Strong Experience in software development best practices More ❯

in AI-driven automation software. You’ll join a team dedicated to pushing the boundaries of what’s possible in the trading world, using innovation to drive real results. Python AI/API Engineer – London What you will do Maintain and develop the AI offering, pioneering innovative approaches to achieve the company's vision. For example, integrating cutting-edge … and participating in code reviews. Keep abreast of new & developing technologies - championing/incorporating when appropriate. What you’ll need to succeed Minimum of 3+ years of experience with Python and major cloud providers (AWS, Azure, or GCP). Proven experience in building Rest APIs with frameworks such as Flask/FastAPI. Strong Experience in software development best practices More ❯

Work with our core technology stack, including Python , Linux (via WSL) , PostgreSQL , SQL Server , Databricks , and leverage both Azure and AWS cloud platforms. Design and implement advanced solutions for data ingestion , transformation , and large-scale orchestration of network I/O. Manage Infrastructure as Code and collaborate with infrastructure teams to deliver new features for CFC’s Engineering Platform. … Assess new data sources for completeness and accuracy to ensure suitability for specific applications. Contribute to CI/CD automation , optimizing for reliable, bug-free releases and an excellent developer experience. Maintain clear, high-quality documentation for both technical and non-technical audiences, starting with your code. Engage in a pairing-first development culture , sharing knowledge and learning from More ❯

Work with our core technology stack, including Python , Linux (via WSL) , PostgreSQL , SQL Server , Databricks , and leverage both Azure and AWS cloud platforms. Design and implement advanced solutions for data ingestion , transformation , and large-scale orchestration of network I/O. Manage Infrastructure as Code and collaborate with infrastructure teams to deliver new features for CFC’s Engineering Platform. … Assess new data sources for completeness and accuracy to ensure suitability for specific applications. Contribute to CI/CD automation , optimizing for reliable, bug-free releases and an excellent developer experience. Maintain clear, high-quality documentation for both technical and non-technical audiences, starting with your code. Engage in a pairing-first development culture , sharing knowledge and learning from More ❯

Senior/Lead Hands on Full Stack Developer - React/Python London | Hybrid (3days in the office and 2 days from home) £110,000+ Equity | Full-Time | Start-up We're a high-growth start-up building a leading healthcare! Looking for a Full Stack developer who loves working across the stack - React on the front end … Python on the back end. You'll: Build responsive UIs in React Develop APIs & services in Python (either Django/Flask/FastAPI) Own features end-to-end Help shape our tech stack You have: Strong React & Python skills API & database experience A proactive, problem-solving mindset Ideally start-up or scale-up experience Why us? Big More ❯

costs and optimize return metrics. Who We're Seeking: We're on the lookout for a seasoned mid-level Software Engineer with up to 6+ years of hands-on Python experience. Familiarity with AWS Serverless and related technologies would be advantageous. Strengths in Pandas, Polars, Pytest, Postgres, and CI/CD is essential. If you're interested in Agile More ❯

costs and optimize return metrics. Who We're Seeking: We're on the lookout for a seasoned mid-level Software Engineer with up to 6+ years of hands-on Python experience. Familiarity with AWS Serverless and related technologies would be advantageous. Strengths in Pandas, Polars, Pytest, Postgres, and CI/CD is essential. If you're interested in Agile More ❯

Python Software Engineer needed to play a pivotal role in evolving our client's core platform developing APIs, data workflows, and system integrations that power bespoke digital tools for major clients. Youll work hands-on with Python, FastAPI, SQL, and orchestration tools, taking automation-generated code and making it production-ready. Youll also be a champion of AI … assisted development, helping to embed LLM-based workflows into day-to-day engineering processes. Key Responsibilities Build and enhance backend features and integrations (Python, FastAPI, gRPC, SQL). Extend auto-generated pipelines and front-end automation outputs. Develop connectors for APIs, files, and external systems. Integrate LLM-based capabilities with strong testing and monitoring practices. Lead best practices for … AI-assisted coding tools Collaborate closely with cross-functional teams including Data and Platforms About You Strong experience with Python backend and API development Skilled in SQL, data modelling, and workflow orchestration tools Daily user of AI-powered coding assistants, with a focus on efficiency and code quality Proven experience building and managing integrations (APIs, SFTP, SharePoint, webhooks) Familiar More ❯

Python Software Engineer needed to play a pivotal role in evolving our client's core platform — developing APIs, data workflows, and system integrations that power bespoke digital tools for major clients. You’ll work hands-on with Python, FastAPI, SQL, and orchestration tools, taking automation-generated code and making it production-ready. You’ll also be a champion … of AI-assisted development, helping to embed LLM-based workflows into day-to-day engineering processes. Key Responsibilities Build and enhance backend features and integrations (Python, FastAPI, gRPC, SQL). Extend auto-generated pipelines and front-end automation outputs. Develop connectors for APIs, files, and external systems. Integrate LLM-based capabilities with strong testing and monitoring practices. Lead best … practices for AI-assisted coding tools Collaborate closely with cross-functional teams including Data and Platforms About You Strong experience with Python backend and API development Skilled in SQL, data modelling, and workflow orchestration tools Daily user of AI-powered coding assistants, with a focus on efficiency and code quality Proven experience building and managing integrations (APIs, SFTP, SharePoint More ❯

Python Software Engineer needed to play a pivotal role in evolving our client's core platform — developing APIs, data workflows, and system integrations that power bespoke digital tools for major clients. You’ll work hands-on with Python, FastAPI, SQL, and orchestration tools, taking automation-generated code and making it production-ready. You’ll also be a champion … of AI-assisted development, helping to embed LLM-based workflows into day-to-day engineering processes. Key Responsibilities Build and enhance backend features and integrations (Python, FastAPI, gRPC, SQL). Extend auto-generated pipelines and front-end automation outputs. Develop connectors for APIs, files, and external systems. Integrate LLM-based capabilities with strong testing and monitoring practices. Lead best … practices for AI-assisted coding tools Collaborate closely with cross-functional teams including Data and Platforms About You Strong experience with Python backend and API development Skilled in SQL, data modelling, and workflow orchestration tools Daily user of AI-powered coding assistants, with a focus on efficiency and code quality Proven experience building and managing integrations (APIs, SFTP, SharePoint More ❯

Python Developers Wanted DV/SC Cleared | Python + TypeScript + JavaScript | AI-Focused | London HQ | Office-Hybrid Areti Group is exclusively hiring for one of the fastest-growing AI-driven tech scale-ups in London. They've grown 290% this year alone, just secured a major investment, and are scaling fast with plans to grow to 100+ … employees by year-end. Now, theyre hiring x8 Software Engineers (Python-focused) to help power the next phase of product development, experimentation, and platform scale. A Company Thats Not Just Growing Its Exploding This is your chance to join the foundational engineering team building the future of AI and do it in a culture obsessed with innovation, clean code … features, solving deep performance and scalability problems, and working alongside some of the smartest minds in tech. What Youll Be Working On: Designing and building scalable backend systems using Python Collaborating on full-stack features with TypeScript and JavaScript Creating and integrating RESTful and GraphQL APIs Working with Docker, Kubernetes, and cloud infrastructure (AWS) Developing within a microservices architecture More ❯

Python Developers Wanted DV/SC Cleared | Python + TypeScript + JavaScript | AI-Focused | London HQ | Office-Hybrid Areti Group is exclusively hiring for one of the fastest-growing AI-driven tech scale-ups in London. They've grown 290% this year alone, just secured a major investment, and are scaling fast with plans to grow to 100+ … employees by year-end. Now, they’re hiring x8 Software Engineers (Python-focused) to help power the next phase of product development, experimentation, and platform scale. 💥 A Company That’s Not Just Growing – It’s Exploding This is your chance to join the foundational engineering team building the future of AI — and do it in a culture obsessed with … solving deep performance and scalability problems, and working alongside some of the smartest minds in tech. 🧠 What You’ll Be Working On: Designing and building scalable backend systems using Python Collaborating on full-stack features with TypeScript and JavaScript Creating and integrating RESTful and GraphQL APIs Working with Docker, Kubernetes, and cloud infrastructure (AWS) Developing within a microservices architecture More ❯

Python Developers Wanted DV/SC Cleared | Python + TypeScript + JavaScript | AI-Focused | London HQ | Office-Hybrid Areti Group is exclusively hiring for one of the fastest-growing AI-driven tech scale-ups in London. They've grown 290% this year alone, just secured a major investment, and are scaling fast with plans to grow to 100+ … employees by year-end. Now, they’re hiring x8 Software Engineers (Python-focused) to help power the next phase of product development, experimentation, and platform scale. 💥 A Company That’s Not Just Growing – It’s Exploding This is your chance to join the foundational engineering team building the future of AI — and do it in a culture obsessed with … solving deep performance and scalability problems, and working alongside some of the smartest minds in tech. 🧠 What You’ll Be Working On: Designing and building scalable backend systems using Python Collaborating on full-stack features with TypeScript and JavaScript Creating and integrating RESTful and GraphQL APIs Working with Docker, Kubernetes, and cloud infrastructure (AWS) Developing within a microservices architecture More ❯

Senior Full Stack Developer - Hybrid - £650/day Outside IR35 | React | .NET | Python | AWS | API | Asset Management | Wealth Management Looking to speak with experienced Full Stack Developers to join a client of ours within the Asset space. They're looking to build a new division within the tech team and are looking for a Senior/Lead Full … days onsite in London Up to £650/day Outside IR35 Initial 6-month contract Key Skills Strong experience in full-stack development, with React, and .NET or Python Hands-on experience with AWS Strong API development and integration experience Experience with event-driven architecture Senior Full Stack Developer - Hybrid - £650/day Outside IR35 | React | .NET | Python More ❯

Senior Full Stack Developer - Hybrid - £650/day Outside IR35 | React | .NET | Python | AWS | API | Asset Management | Wealth Management Looking to speak with experienced Full Stack Developers to join a client of ours within the Asset space. They're looking to build a new division within the tech team and are looking for a Senior/Lead Full … days onsite in London Up to £650/day Outside IR35 Initial 6-month contract Key Skills Strong experience in full-stack development, with React, and .NET or Python Hands-on experience with AWS Strong API development and integration experience Experience with event-driven architecture Senior Full Stack Developer - Hybrid - £650/day Outside IR35 | React | .NET | Python More ❯

Senior Full Stack Developer - Hybrid - 650/day Outside IR35 | React | .NET | Python | AWS | API | Asset Management | Wealth Management Looking to speak with experienced Full Stack Developers to join a client of ours within the Asset space. They're looking to build a new division within the tech team and are looking for a Senior/Lead Full … days onsite in London Up to 650/day Outside IR35 Initial 6-month contract Key Skills Strong experience in full-stack development, with React, and .NET or Python Hands-on experience with AWS Strong API development and integration experience Experience with event-driven architecture Senior Full Stack Developer - Hybrid - 650/day Outside IR35 | React | .NET | Python More ❯

JOB DESCRIPTION POSITION: Python/Hx Renew Developer (Contract) LOCATION: London/Hybrid The Role: The pricing transformation project has seen five models go live in hx Renew so far and ambitious plans for 2025/26 to design, build, test and implement a number of new models in addition. This role will provide additional bandwidth to the … is built into hx Renew and kept up to date Development of wire frames in collaboration with the pricing actuaries and underwriters Coding the model logic within Renew using Python, translating actuarial concepts into code Collaborate with the appropriate stakeholders to ensure models built in Renew are designed with consideration for third-party system integrations (where applicable) Supporting the … Renew Assist in platform upgrades, patch deployment and tool migration as required by version update cycle Essential: Strong background working in the Insurance or Reinsurance sector High standard of Python 1+ years' experience building pricing models in Hx Renew Insurance and Lloyd’s knowledge Experience with Agile methodologies and working in sprints Strong understanding of software testing methodologies and More ❯

JOB DESCRIPTION POSITION: Python/Hx Renew Developer (Contract) LOCATION: London/Hybrid The Role: The pricing transformation project has seen five models go live in hx Renew so far and ambitious plans for 2025/26 to design, build, test and implement a number of new models in addition. This role will provide additional bandwidth to the … is built into hx Renew and kept up to date Development of wire frames in collaboration with the pricing actuaries and underwriters Coding the model logic within Renew using Python, translating actuarial concepts into code Collaborate with the appropriate stakeholders to ensure models built in Renew are designed with consideration for third-party system integrations (where applicable) Supporting the … Renew Assist in platform upgrades, patch deployment and tool migration as required by version update cycle Essential: Strong background working in the Insurance or Reinsurance sector High standard of Python 1+ years' experience building pricing models in Hx Renew Insurance and Lloyd’s knowledge Experience with Agile methodologies and working in sprints Strong understanding of software testing methodologies and More ❯