Senior Python Engineer (DevEx Team, Remote)
Position Summary
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.
More details: crystalintelligence.com
Duties and 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
Required
- 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
Would be a plus
- 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
No previous knowledge of Blockchain technology required.
Tech stack
- Redis, RabbitMQ, PostgreSQL, ClickHouse
- Kubernetes, AWS S3
- Python 3.14, Flask, Granian
- Datadog, Grafana
You’ll get
- AI tool of your choice: Cursor or Claude Code