233 Python jobs in London

Senior Python Developer (PYTHON/AWS/REACT) - Health tech - tech for good, make a positive impact on the world

Highly successful and fast growing organisation has an exciting opportunity for a Senior Software Developer (PYTHON/AWS/REACT).

They are looking for a talented individual who will design, implement, and maintain their publishing software, systems, and customer-facing digital products.

Requirements

• Design and implement systems and software to meet requirements using appropriate tools and methods.
li>Promote the creation of high-quality code by commitment to practices such as test-driven development, pair programming and code review.
• Be responsible for the technical development of all stages of software creation, including testing; ensure that implementation meets security, performance, and safety requirements.
• Suggest improvements to the code base, development processes, tooling and working practices. Encourage innovation by identifying, evaluating and adoption of emerging technologies.
• Assist with the design, implementation, and testing of APIs that adhere to the Open API specification

Knowledge & Skills for this job

• Able to demonstrate commercial software development experience.
• Practical experience in system design, development, testing and operational stability.
• Deep knowledge and experience in Python and its ecosystem, patterns and pitfalls.
• Experience applying continuous delivery, test driven development and pair programming.
• Experience of working in an agile environment and an understanding of Scrum principles in particular.
• Experience writing and consuming RESTful APIs in Python.
• Experience with AWS services (Lambda, DynamoDB, ElasticSearch).
• Experience with creating web application UIs using ReactJS and with TypeScript

The Directorate

This role will work closely with our Head of Engineering, Head of Data Science, QA Manager, Lead Software Developers, Software Developers and Chief Technology Officer.

The Team

As well as the above teams, you will be working across the organisation. We are welcoming someone who sees opportunities, is proactive and energetic wanting to make a difference to the way we wor

Excellent opportunity to positively impact patient safety whilst working on complex, challenging and career defining projects.

Basic salary £64,000 - 70,000 + excellent benefits

Hybrid role - between 4 - 8 days per month in the London office, the rest remote

Senior Python Developer (PYTHON/AWS/REACT) - Health tech - tech for good, make a positive impact on the world

Highly successful and fast growing organisation has an exciting opportunity for a Senior Software Developer (PYTHON/AWS/REACT).

They are looking for a talented individual who will design, implement, and maintain their publishing software, systems, and customer-facing digital products.

Requirements

• Design and implement systems and software to meet requirements using appropriate tools and methods.
li>Promote the creation of high-quality code by commitment to practices such as test-driven development, pair programming and code review.
• Be responsible for the technical development of all stages of software creation, including testing; ensure that implementation meets security, performance, and safety requirements.
• Suggest improvements to the code base, development processes, tooling and working practices. Encourage innovation by identifying, evaluating and adoption of emerging technologies.
• Assist with the design, implementation, and testing of APIs that adhere to the Open API specification

Knowledge & Skills for this job

• Able to demonstrate commercial software development experience.
• Practical experience in system design, development, testing and operational stability.
• Deep knowledge and experience in Python and its ecosystem, patterns and pitfalls.
• Experience applying continuous delivery, test driven development and pair programming.
• Experience of working in an agile environment and an understanding of Scrum principles in particular.
• Experience writing and consuming RESTful APIs in Python.
• Experience with AWS services (Lambda, DynamoDB, ElasticSearch).
• Experience with creating web application UIs using ReactJS and with TypeScript

The Directorate

This role will work closely with our Head of Engineering, Head of Data Science, QA Manager, Lead Software Developers, Software Developers and Chief Technology Officer.

The Team

As well as the above teams, you will be working across the organisation. We are welcoming someone who sees opportunities, is proactive and energetic wanting to make a difference to the way we wor

Excellent opportunity to positively impact patient safety whilst working on complex, challenging and career defining projects.

Basic salary £64,000 - 70,000 + excellent benefits

Hybrid role - between 4 - 8 days per month in the London office, the rest remote

• Work with data science teams to optimise predictive models and deploy them at scale
• Build robust, scalable services in Python , with performance-critical elements in C++
• Contribute to the development of a digital twin platform to simulate and forecast city infrastructure outcomes
• Collaborate across simulation, data, and software teams to turn prototypes into production-ready solutions
• (Bonus) Integrate streaming data pipelines  using Kafka  to support real-time modelling

• Strong commercial experience in Python  engineering
• Exposure to C++ , especially in simulation, modelling, or high-performance systems
• Proven track record working closely with data scientists  to bring models into production
• Background in simulation-heavy domains  (e.g. finance, oil & gas, energy, transport)
• Experience with Kafka  or distributed messaging systems is highly desirable
• Systems thinker — interested in how predictive models drive real-world infrastructure impact

• Inside IR35
• £600-650p/d
• 2 days per week in central London 
• Start: ASAP
• 6 month rolling contracts 
• 3 year programme of work 

Vortexa is a fast-growing international technology business founded to solve the immense information gap that exists in the energy industry. By using massive amounts of new satellite data and pioneering work in artificial intelligence, Vortexa creates an unprecedented view on the global seaborne energy flows in real-time, bringing transparency and efficiency to the energy markets and society as a whole.

Processing thousands of rich data points per second from many vastly different external sources, moving terabytes of data while processing it in real-time, running complex prediction and forecasting AI models while coupling their output into a hybrid human-machine data refinement process and presenting the result through a nimble low-latency SaaS solution used by customers around the globe is no small feat of science and engineering. This processing requires models that can survive the scrutiny of industry experts, data analysts and traders, with the performance, stability, latency and agility a fast-moving startup influencing multi-$m transactions requires.

The Data Platform Team is responsible for all of Vortexa’s data. The team’s ownership ranges from raw satellite AIS/imaging data to unstructured textual and graphical maritime data like fixtures, port lineups, and customs filings. The team is also responsible for highly structured datasets such as price and supply-demand forecasts as well as modeling the global energy flows and tanker fleet distributions.

The team has built a variety of procedural, statistical and machine learning models that enabled us to provide the most accurate and comprehensive view of energy flows. We take pride in applying cutting-edge research to real-world problems in a robust, long-lasting and maintainable way. The quality of our data is continuously benchmarked and assessed by experienced in-house market and data analysts to ensure the quality of our predictions.

You’ll be instrumental in designing and building infrastructure and applications to propel the design, deployment, and benchmarking of existing and new pipelines and ML models. Working with software and data engineers, data scientists and market analysts, you’ll help bridge the gap between scientific experiments and commercial products by ensuring 100% uptime and bulletproof fault-tolerance of every component of the team's data pipelines.Vortexa was founded to solve the immense information gap that exists in the energy industry. By using massive amounts of new satellite data and pioneering work in artificial intelligence, Vortexa creates an unprecedented view on the global flows of oil and fuels in real-time, optimising the energy markets and enabling the society as a whole to use the natural resources of our planet to the benefit of all.

Requirements

You Are:

• Fluent in Python and software engineering fundamentals, and comfortable with highly scalable data processing libraries
• Strong expertise in distributed systems, micro-service architectures and scalable data processing pipelines
• Driven by working in an intellectually engaging environment with the top minds in the industry, where constructive and friendly challenges and debates are encouraged, not avoided
• Excited about working in a start-up environment: not afraid of challenges, excited to bring new ideas to production, and a positive can-do will-do person, not afraid to push the boundaries of your job role

• Experienced in building distributed heavy-load backend systems that can go through terabytes of data daily

• Passionate about coaching developers, helping them improve their skills and grow their careers
• Deep experience of the full software development life cycle (SDLC), including technical design, coding standards, code review, source control, build, test, deploy, and operations

Awesome If You:

• Are experienced in Rust / Java / Kotlin
• Have experience with AWS, Apache Kafka, Kafka Streams, Apache Beam / Flink / Spark – especially deployment, monitoring & debugging
• Have experience with productisation of Machine Learning research projects
• Are familiar with Airflow or other workflow orchestration tools, and worked with Kubernetes
• Understand data lake systems and file formats like Parquet, Orc, Athena
• Have some relevant AWS or Kafka certifications

Benefits

• A vibrant, diverse company pushing ourselves and the technology to deliver beyond the cutting edge
• A team of motivated characters and top minds striving to be the best at what we do at all times
• Constantly learning and exploring new tools and technologies
• Acting as company owners (all Vortexa staff have equity options)– in a business-savvy and responsible way
• Motivated by being collaborative, working and achieving together
• A flexible working policy- accommodating both remote & home working, with regular staff events
• Private Health Insurance offered via Vitality to help you look after your physical health
• Global Volunteering Policy to help you ‘do good’ and feel better

A Senior Python Developer is needed by an innovative e-commerce business based in London We need a seasoned Python developer with a passion for building robust web and mobile applications. As a Senior Python Developer you will need hands-on experience with Flask and AWS and you must have worked in an agile environment where code quality is a focus.

Key Requirements:

Software/Data Developer - Market leading HFT/Systematic Trading Firm.

Compensation: Up to £250k TC

Location: London

WFH: 4 days in office, 1 from home

I'm currently working with one of the most successful and modern Quant Trading firms in London. Being a top 3 performer across various markets and boasting yearly returns of over 20%, they are have brought in some of the worlds best engineers of the past decade. Their modern and innovative approach means no legacy work to deal with and state of the art tech.

They're looking for a data focused Python Engineer to join one of their highest performing and unique teams, focusing on the development of a greenfield data ingestion platform, you will use OO Python to build out the backend of this platform and the associated large scale ETL pipelines with it. This is a fantastic opportunity for a top tier developer at the intersection of Software Development and Data Engineering.

Must Have

• 4+ years experience in OO Python development
• 4 + years experience in finance
• 2+ years experience building out large scale data pipelines

Please contact for more information

• If this role isn't right for you, but you know of someone who might be interested, we have a market-leading referral scheme in place to thank anyone who refers a friend who is successfully placed! T&Cs apply

Technical Lead (Java/Python)
London
£90,000 - £95,000 + Progression + Pension

An excellent opportunity awaits an experienced Developer with strong Python and Java experience join an exciting SaaS business. This role offers technical growth, variety, and strong development opportunities.

The company is a profitable, maturing technology business delivering software and AI-driven solutions for industria.

WHJS1_UKTJ

About the role:

As a software engineer at NLPatent, and one of the early hires for the engineering team, you'd be key in building the core features and foundations to scale out the platform. You'd work closely alongside NLPatent's CTO in planning and executing product development.

About the engineering team:

We're a hybrid team based out of our London office in Moorgate with the rest of the company based in Toronto Canada.

Requirements

• 5+ years of commercial engineering experience
• Extensive Python web development experience
• Experience with Django
• Experience with Docker and containerized web applications
• Experience with relational DBs
• Proficiency with Git
• AWS experience
• Willing to work 3 days per week onsite in the office

Bonus points for:

• Exposure to NLP - in particular semantic search systems
• Experience working with LLMs
• Experience building CI/CD pipelines
• Terraform or cloud infrastructure experience
• Frontend experience (React)
• Experience with Elasticsearch or Opensearch

Benefits

• Flexible working
• Pension
• Training & Development
• Stock Option Plan

Get The Future You Want!

Choosing Capgemini means choosing a company where you will be empowered to shape your career in the way you’d like, where you’ll be supported and inspired by a collaborative community of colleagues around the world, and where you’ll be able to reimagine what’s possible. Join us and help the world’s leading organizations unlock the value of technology and build a more sustainable, more inclusive world.

Your Role:

We are seeking a skilled and motivated Data Engineer  with proven experience in the banking and financial services domain . The ideal candidate will have strong expertise in Python, PySpark, and SQL , and a working knowledge of AWS cloud services . You will be responsible for designing, building, and maintaining scalable data pipelines and solutions that support critical business operations and analytics.

• Design, develop, and optimize data pipelines for structured and unstructured data.
• Collaborate with data scientists, analysts, and business stakeholders to understand data requirements.
• Implement data quality checks, validation, and monitoring processes.
• Work with large-scale financial datasets to support reporting, analytics, and regulatory compliance.
• Develop and maintain ETL workflows using Python, PySpark, and SQL.
• Leverage AWS services (e.g., S3, Glue, Lambda, Redshift) to build cloud-native data solutions.
• Ensure data security and compliance with financial regulations and standards.
• Troubleshoot and resolve data-related issues in production environments.

Your Profile:

• Bachelor's or Master’s degree in Computer Science, Engineering, or related field.
• 5+ years of experience in data engineering roles, preferably in banking or financial services.
• Strong programming skills in Python  and PySpark .
• Advanced proficiency in SQL  for data manipulation and querying.
• Experience with AWS  cloud services is a strong plus.
• Familiarity with data warehousing concepts and tools.
• Understanding of financial data structures, compliance, and reporting requirements.
• Excellent problem-solving and communication skills.

• Experience with tools like Apache Airflow, Kafka, or Snowflake.
• Knowledge of data governance and metadata management.
• Exposure to machine learning pipelines or financial modeling is a bonus.

About Capgemini

Capgemini is a global business and technology transformation partner, helping organizations to accelerate their dual transition to a digital and sustainable world while creating tangible impact for enterprises and society. It is a responsible and diverse group of 350,000 team members in more than 50 countries. With its strong over 55-year heritage, Capgemini is trusted by its clients to unlock the value of technology to address the entire breadth of their business needs. It delivers end-to-end services and solutions leveraging strengths from strategy and design to engineering, all fueled by its market-leading capabilities in AI, cloud, and data, combined with its deep industry expertise and partner ecosystem. The Group reported 2023 global revenues of €22.5 billion.

Get The Future You Want |