Senior Python Engineer

SGI; City Of London; On-site; GBP 60,000 - 80,000; Full time

Job summary

A modern financial services firm is looking for a Senior Python Engineer to join their team in the City of London. You will help redesign their technology stack to be cloud-native on AWS, focusing on Python-based services. The ideal candidate should possess solid experience in Python and database technologies, and a strong ability to engage with both technical and non-technical stakeholders. This role emphasizes writing clean, efficient code in an Agile engineering environment.

Qualifications

• Solid experience with Python in enterprise systems.
• Hands-on knowledge of SQL and NoSQL databases.
• Experience with serverless cloud technologies.

Responsibilities

• Design and build clean, reusable Python components.
• Evolve existing platforms as business needs change.
• Collaborate closely with business users.

Skills

Python

Agile methodologies

SQL databases

NoSQL databases

CI/CD pipelines

DevSecOps practices

Git

GitHub

Tools

AWS Lambda

AWS AppSync

DynamoDB

Job description

Senior Python Engineer - Financial Services

You will join a financial services business reimagining their technology stack to be cloud-native on AWS, with modern front ends and Python-based services at the core.

Great engineering culture matters as well as writing clean, well-designed code, building systems that are easy to test and extend, and learning from one another along the way.

You’ll spend your time designing and building clean, reusable Python components that form the backbone of cloud-first solutions on AWS.

You’ll work on evolving existing platforms as business needs change, collaborating closely with business users to shape maintainable, well-architected software that solves real problems.

• You’ll be comfortable working in a modern engineering environment, using Agile ways of working, CI/CD pipelines, and DevSecOps practices, with tools like Git and GitHub supporting your day-to-day development.
• You’ll bring solid experience with Python in enterprise systems, along with hands-on knowledge of both SQL and NoSQL databases, common data structures, and data transformation patterns.
• Experience with serverless and cloud technologies—such as AWS Lambda, AppSync, or DynamoDB—will help you hit the ground running.
• Just as importantly, you’ll enjoy working with people.
• You’ll communicate confidently with both technical and non-technical stakeholders, contribute to code reviews and pair programming, and help coach and support more junior engineers by sharing best practices and encouraging high-quality software craftsmanship.