Senior Python Developer

Role: Senior Developer - Python, AWS & PySpark

Location: London (Hybrid)

We are looking for a Senior Developer to join a global organization and take ownership of end-to-end technical delivery. You will design, implement and optimize Python and cloud-based solutions using AWS and PySpark. These power data-intensive, regulation-focused applications used around the world. If you love clean code, scalable architecture and meaningful impact, this is your next move. Your code will help clients meet their regulatory obligations.

• Design scalable, modular Python applications that process complex business and regulatory data sets, built for long-term reuse and evolution.
• Develop secure, efficient AWS solutions that use core services to support highly available data pipelines and transaction workflows.
• Implement optimized PySpark jobs for large-scale data transformations, with efficient resource usage and predictable performance.
• Create and refine PL/SQL procedures and queries that protect data integrity and support regulatory reporting and high-volume operations.
• Work with product owners and business stakeholders to turn regulatory and governance needs into clear technical requirements.
• Review and refine code from the development team, championing Python standards, AWS best practices and database optimization.
• Provide detailed technical estimates and task breakdowns so sprints are planned accurately and timelines are transparent.
• Partner with cloud operations and security teams to validate deployments, monitoring coverage and incident response.
• Guide the adoption of secure coding patterns, encryption and access controls across Python services and AWS configurations.
• Analyze production issues, find root causes and deliver durable fixes that reduce repeat incidents and downtime.
• Document architectures, service interactions and data flows in clear design records that support audit and knowledge transfer.