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.

Originally posted on Himalayas