A Windows system administrator, otherwise known as a Windows administrator, is in charge of the Windows systems in a company. Tasks you can expect include acquiring, installing, upgrading, and maintaining Windows-based systems and servers. You will be expected to be an expert when it comes to Windows systems so having Windows certifications listed on your resume would be very beneficial for you. Recruiters will otherwise expect to see a background in I.T.
In terms of soft skills, you will be expected to have strong communication skills and patience as you will be talking and assisting multiple people across the company. Here is a successful resume sample.