Based on the provided job description, here are 6-10 important requirements for the backend developer position, in order of importance, along with an importance rating (0-10):

1. **Strong backend development experience with Python or Node.js** (Importance: 9) - The ability to develop robust and efficient backend solutions is crucial for this role.
2. **Proficient in integrating REST and GraphQL APIs** (Importance: 8.5) - Integrating with various APIs is a key responsibility, and proficiency in REST and GraphQL APIs is essential.
3. **Experience with Shopify API (GraphQL preferred)** (Importance: 8) - Familiarity with the Shopify API, particularly GraphQL, is important for e-commerce workflow automation.
4. **Familiarity with structured storage solutions like PostgreSQL or SQLite** (Importance: 7.5) - Knowledge of structured storage solutions is necessary for building and integrating internal tools and automations.
5. **Ability to rapidly prototype new internal tools and automations** (Importance: 7) - The ability to quickly develop and test new solutions is critical in a fast-paced environment.
6. **Strong problem-solving skills and attention to detail** (Importance: 6.5) - While not explicitly mentioned, strong problem-solving skills and attention to detail are essential for a backend developer to ensure high-quality solutions.
7. **Experience with AI search capabilities** (Importance: 6) - Although not a strict requirement, experience with AI search capabilities would be beneficial for building the internal knowledge repository.
8. **Collaboration and communication skills** (Importance: 5.5) - The ability to work effectively in a collaborative environment and communicate with team members is important, but not as critical as technical skills.
9. **Adaptability and ability to work in a fast-paced environment** (Importance: 5) - The ability to adapt to changing priorities and work efficiently in a fast-paced environment is necessary, but not as important as technical skills.
10. **Experience with e-commerce workflows and automation** (Importance: 4.5) - While not a strict requirement, experience with e-commerce workflows and automation would be beneficial, but can be learned on the job.

Note that the importance ratings are subjective and may vary depending on the specific needs and priorities of the organization.