Senior Full Stack React/ Node Developer/ Postgres

We are looking for a full stack developer that is an expert in React and Node as a backend to join our scrum team. We want someone that can work independently, efficiently, and can deliver on the expectations set. This new team member is someone that can contribute to the vision of the product and doesn't want to just execute stories/ not be involved.

Requirements:
* Expert knowledge of React and Node
* Deliver to the expectations set forth for a sprint
* Join and contribute to agile meetings
* Collaborate with team members
* Self-motivated and results-driven
* Work under a confidentiality agreement
* Work in a secure cloud-based development environment using the tools provided
* Ensure team compliance with corporate security requirements

Give me your answers to the following questions.
1. Tell me about your experience with Node. How many years have you been developing using it?
2. What was the hardest problem you faced with React and how did you overcome that problem?