Sr Backend developer PHP for crypto-project (part time on weekends)

We have a full-time dev team, but we would like for the work to be moving on the weekends as well for faster project development.

We are looking for the senior php developer, familiar with cryptocurrency/blockchain technologies for the weekend work schedule. Experience with security best practices and Laravel php framework.
***Must speak and understand technical documentation in Russian.***

Job description
Cryptocurrency exchange startup is looking for senior php developer.
Your responsibilities as a member of dev. team would be to write from scratch the cryptocurrency exchange platform. This is your attention to details test: please start your proposal with the number of times you jumped with a parachute.
Your key contribution to the team would be to bring the technical knowledge about cryptocurrency/blockchain technology and security best practices.

Technical requirements
- familiarity with *nix ecosystem is mandatory
- previous experience working with REST API is mandatory
- at least 3 years of experience with php
- at least 1 year of experience with modern frameworks like Yii, Symfony, Laravel. We use Laravel
- excellent SQL skills, we use PostgreSQL
- experience working with Redis or similar caching system
- familiarity with modern front end frameworks like VueJS, Angular, ReactJS will be a plus
- knowledge of TypeScript will be a plus
- familiarity with Amazon Web Services will be a plus
- Git advanced user
- familiarity with Agile/SCRUM workflows
- good knowledge of other high level languages like Go, Python, Java, C# will be  plus.
- In your bid please submit the number of hours you will be available to work on Saturdays and Sundays and the desired hourly rate.
-Start your response with the number of times you jumped with a parachute