Senior Python Engineer

Role Overview

Join our Platform & Developer Experience team as a Senior Python Engineer, shaping the foundations of developer experience, scalability, and performance of the Crystal platform. This is a fully remote role, welcoming applications from anywhere in Europe.

What You Will Do

Performance improvements, database query optimisation, scalability enhancements, monitoring and observability configuration, managing and developing internal libraries, and end-to-end feature design and implementation.

Why It Might Be a Fit

8+ years of commercial experience developing Python backend services and APIs, solid software architecture skills, experience with distributed systems, and strong knowledge of SQL/NoSQL databases and data architecture.

Requirements

• 8+ years of commercial experience developing Python backend services and APIs for the web
• Solid software architecture skills
• Experience with distributed systems
• Strong knowledge of SQL/NoSQL databases and data architecture, including PostgreSQL
• Experience with the Flask framework
• Experience in performance optimisation (database query optimisation, caching)
• Understanding of integration processes with external services
• Product-oriented mindset
• Proficiency in English

Benefits

• AI tool of your choice: Cursor or Claude Code