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December 17, 2025

Python Engineer

Senior • Remote

Position Summary:

We are looking for a talented Senior Python Engineer to join our Blockchain integration team. This is a remote role, and we are flexible with considering applications from anywhere in Europe. As part of our Blockchain integration team, you will play a critical role in integrating additional blockchains and protocols into the Crystal platform.

More details: crystalintelligence.com


Duties and responsibilities:

  • Integration of blockchains, tokens and bridges within Crystal's platform;

  • Maintain code to high-quality standards;

  • End-to-end feature designing and implementation;

  • Code, debug, test and deliver features and improvements in a continuous manner;

  • Provide code review, assistance and feedback for other team members;

  • Refactor code as necessary.


Required:

  • 5+ years commercial experience in developing Python backend services and API for Web or Mobile Apps;

  • Solid software architecture skills;

  • Strong knowledge of SQL/NoSQL databases and data architecture;

  • Experience with a Flask framework;

  • Knowledge of Unit Testing principles;

  • Experience in developing service-oriented solutions;

  • Understanding of the process of integration with external services;

  • Product-oriented mindset;

  • Proficiency in English.


Would be a plus:

  • Hands-on experience with PostgreSQL;

  • Hans-on experience in big data, key-value and other storages;

  • DevOps skills for working in development environment;

  • Experience with open source solutions;

  • Passion for Bitcoin and Blockchain technologies;

  • Experience with distributed systems, like cryptocurrencies and blockchain technologies.