Contract Python Developer in City of London

Contract Python Developer in City of London

City of London Freelance 60000 - 80000 £ / year (est.) Home office (partial)
Hexaware Technologies

At a Glance

  • Tasks: Develop Python applications for trading and risk management in investment banking.
  • Company: Join a leading investment bank with a focus on innovation and collaboration.
  • Benefits: Flexible work model, competitive pay, and opportunities for professional growth.
  • Other info: Dynamic team environment with mentorship opportunities and career advancement.
  • Why this job: Make an impact in finance by building systems that drive trading and risk solutions.
  • Qualifications: 7-12 years of Python development experience, especially in capital markets.

The predicted salary is between 60000 - 80000 £ per year.

Contract Type: 6 months contract inside IR 35

Work Mode: 3 days from office, 2 days from home

We are looking for a Python Developer with strong experience in trading and risk management systems within investment banking. The role involves building backend applications and data processing logic supporting risk calculations, trade workflows and reporting.

Key Responsibilities

  • Develop and enhance Python-based applications for trading and risk use cases
  • Build data processing pipelines and automation scripts for trade, risk and reconciliation workflows
  • Work with large financial datasets to support PnL, risk and reporting requirements
  • Contribute to system design, architecture and scalability decisions
  • Collaborate with quants, traders and risk teams to translate business requirements into technical solutions
  • Develop and integrate REST APIs and backend services
  • Contribute to CI/CD pipelines and deployment processes
  • Support production systems (L2/L3) including debugging, enhancements and performance optimization
  • Write and maintain unit and integration tests. Ensure high code quality and test coverage
  • Participate in code reviews and mentor junior developers where required

Must-Have Skills

  • Strong experience in Core Python development (6–10 years)
  • Strong SQL skills with ability to handle complex queries and large datasets
  • Experience with Python libraries (Pandas, NumPy) for data processing
  • Experience building RESTful APIs/services (Flask / FastAPI / Django)
  • Strong understanding of data structures and performance optimization
  • Experience working with large-scale data processing and performance optimization
  • Working knowledge of Unix / Linux environments and basic shell scripting

Domain Experience (Critical)

  • Experience working in Investment Banking / Capital Markets environments
  • Hands-on exposure to Market Risk / CCR / PnL / Trade lifecycle / Reconciliation
  • Understanding of financial products such as Derivatives (swaps, futures, options), bonds

Good-to-Have

  • Exposure to PySpark or large-scale data processing
  • Experience working with quants or pricing models
  • Basic scripting (Unix / Bash)
  • Prior experience in global banking environments

Note: Candidates without capital markets / risk / trading domain experience will not be considered.

Contract Python Developer in City of London employer: Hexaware Technologies

As a Contract Python Developer in our investment banking team, you will thrive in a dynamic work environment that values innovation and collaboration. We offer a flexible work model with three days in the office and two days from home, fostering a healthy work-life balance while providing opportunities for professional growth through mentorship and hands-on experience with cutting-edge technologies. Join us to be part of a culture that prioritises excellence, teamwork, and the development of impactful financial solutions.
Hexaware Technologies

Contact Detail:

Hexaware Technologies Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Contract Python Developer in City of London

✨Tip Number 1

Network like a pro! Reach out to your connections in the investment banking sector and let them know you're on the hunt for a Contract Python Developer role. You never know who might have the inside scoop on openings or can put in a good word for you.

✨Tip Number 2

Show off your skills! Create a portfolio showcasing your Python projects, especially those related to trading and risk management. This will give potential employers a taste of what you can do and set you apart from the crowd.

✨Tip Number 3

Prepare for interviews by brushing up on your technical knowledge and problem-solving skills. Be ready to discuss your experience with large datasets and REST APIs, as well as how you've contributed to system design and performance optimisation in past roles.

✨Tip Number 4

Don't forget to apply through our website! We make it easy for you to find roles that match your skills and experience. Plus, applying directly shows your enthusiasm and commitment to joining our team.

We think you need these skills to ace Contract Python Developer in City of London

Core Python Development
SQL
Pandas
NumPy
RESTful APIs
Flask
FastAPI
Django
Data Structures
Performance Optimization
Unix
Linux
Shell Scripting
Investment Banking Experience
Market Risk

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights your experience in Python development, especially in trading and risk management systems. We want to see how your skills align with the role, so don’t be shy about showcasing relevant projects!

Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you’re the perfect fit for this role. Mention specific experiences that relate to the key responsibilities and must-have skills we’ve listed.

Showcase Your Technical Skills: When filling out your application, be sure to emphasise your strong SQL skills and experience with Python libraries like Pandas and NumPy. We love seeing candidates who can handle complex queries and large datasets!

Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it’s super easy!

How to prepare for a job interview at Hexaware Technologies

✨Know Your Python Inside Out

Make sure you brush up on your Core Python skills, especially around data processing libraries like Pandas and NumPy. Be ready to discuss your past projects where you've built backend applications or data pipelines, as this will show your hands-on experience in the field.

✨Understand the Financial Landscape

Since this role is in investment banking, it's crucial to have a solid grasp of market risk, PnL, and trade lifecycles. Familiarise yourself with financial products like derivatives and bonds, so you can confidently discuss how your technical skills apply to real-world trading scenarios.

✨Prepare for Technical Questions

Expect to dive deep into SQL queries and RESTful API development during the interview. Practise writing complex SQL queries and be ready to explain your thought process when designing APIs. This will demonstrate your ability to handle large datasets and build scalable solutions.

✨Showcase Your Collaboration Skills

This role involves working closely with quants, traders, and risk teams. Be prepared to share examples of how you've successfully collaborated in the past, whether it was translating business requirements into technical solutions or mentoring junior developers. Highlighting your teamwork will set you apart!

Contract Python Developer in City of London
Hexaware Technologies
Location: City of London

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