You can check out Marla Poppins on here or if you send me a DM, I can give you a recommendation for my girl! Both are awesome solutions, but I think Marla Mockus with Marla Poppins will have more flexibility!
Hi Emma, if you don't find any babysitters through referrals, I recommend checking out Care.com. Back in my early twenties, I had a profile on the site and the parents who contacted me for babysitting or nannying jobs appreciated the opportunity to screen me first and learn a little bit about me through a bio I included.