Full Stack Python Engineer

Allscreens Nationwide Ltd; Greater London; On-site; GBP 70,000 - 110,000; Full time

Job summary

Allscreens Nationwide Ltd is seeking a Full Stack Python Engineer to join a business-critical cloud transformation programme. You will work on a large-scale Python estate, refactoring legacy code, breaking down monolithic applications into modular components, and migrating solutions from on‑prem environments into AWS.

The role is hands-on and enterprise-focused, requiring expert Python, strong AWS and Kubernetes experience, and solid SQL/data warehousing skills.

Qualifications

• 5+ years' commercial experience as a Python Engineer, Python Developer, Software Engineer or Full Stack Engineer.
• Expert-level Python development skills with strong Object-Oriented Programming (OOP) experience.
• Proven experience developing, maintaining and modernising large enterprise applications, including legacy code refactoring.
• Strong experience with AWS, cloud migration projects, and modern software engineering practices.
• Strong SQL skills, with experience working on data-intensive applications and data warehousing environments.
• Experience with Kubernetes/EKS and cloud-native technologies.
• Financial Services, Capital Markets or Risk systems experience.

Skills

5+ yrs Python exp

Python development

Object-oriented programming

Legacy code refactoring

AWS cloud

Kubernetes/EKS

SQL / data warehousing

Financial services / capital markets

Cloud migration experience

Enterprise-scale systems

Data-intensive applications

Job description

My client is a leading financial markets organisation undertaking a major cloud transformation programme and is looking for a Full Stack Python Engineer to join a business-critical team.

Working on a large-scale, business-critical application, you'll play a key role in modernising and simplifying a complex Python estate. The work will involve refactoring legacy code, breaking down monolithic applications into modular components, and supporting the migration of solutions from on-prem environments into AWS. This is a highly hands-on engineering role suited to someone who enjoys solving complex technical problems and working on enterprise-scale systems.

Key Requirements:

• 5+ years' commercial experience as a Python Engineer, Python Developer, Software Engineer or Full Stack Engineer.
• Expert-level Python development skills with strong Object-Oriented Programming (OOP) experience.
• Proven experience developing, maintaining and modernising large enterprise applications, including legacy code refactoring.
• Strong experience with AWS, cloud migration projects, and modern software engineering practices.
• Strong SQL skills, with experience working on data-intensive applications and data warehousing environments.
• Experience with Kubernetes/EKS and cloud-native technologies.
• Financial Services, Capital Markets or Risk systems experience.

Nice to Have:

• Snowflake experience.
• AI tooling experience