Senior Python Engineer (DevEx Team, Remote)

Crystal IntelligenceCapon Bridge, WV
Remote

About The Position

We are looking for a talented Senior Python Engineer to join our Platform & Developer Experience team. This is a fully remote role, and we welcome applications from anywhere in Europe. As part of our Build squad, you will play a critical role in shaping the foundations of developer experience, scalability, and performance of the Crystal platform.

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

Nice To Haves

  • Experience with ClickHouse
  • Experience with systems operating on large data volumes
  • Experience designing AI-enabled developer environments
  • Experience writing raw SQL queries
  • Experience designing and leading major reworks of complex distributed systems
  • Experience with Rust
  • Passion for Bitcoin and blockchain technologies

Responsibilities

  • Performance improvements, database query optimisation, and scalability enhancements
  • Monitoring and observability configuration and best practices
  • Managing and developing internal libraries
  • Development pipeline improvements, like code coverage tooling integration, in close collaboration with the DevOps team
  • Maintaining code to high-quality standards
  • End-to-end feature design and implementation
  • Coding, debugging, testing and delivering features and improvements in a continuous manner
  • Providing code reviews, assistance and constructive feedback to other team members
  • Refactoring code as necessary

Benefits

  • AI tool of your choice: Cursor or Claude Code
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