Google spreadsheet specialist

Looking for a Google spreadsheet specialist to assist with formula creation.

Specific Tasks:
- Create formulas in Google spreadsheets
- Modify existing spreadsheet
- Creating a master sheet that receives all data from other sheets

Ideal Skills and Experience:
- Strong proficiency in Google spreadsheets
- Experience in formula creation and modification
- Specialist in zapier/make

Urgency:
- Immediate

Please provide examples of previous work and availability.