
"Amina came and helped us out when our babysitter canceled last minute. She was great with our kids. Even our 11 month old son who has stranger anxiety warmed up to her."
Marie C., parent

Need a sitter on short notice? Portola Valley families find trusted, background checked babysitters on UrbanSitter.
Looking for jobs? Apply here.
Families in Portola Valley use UrbanSitter for last-minute date nights, schedule changes, backup care, and same-day babysitter needs.
58 available today | Avg hourly rate: $31.22/hr
All babysitters shown here are background checked every year. Learn more.
**Please note: I do not generally take care of sick children. Please let me know in advance if anyone in your family is sick, especially if they’re contagious, so I can decide whether or not to come. If I’m not told about your sick child until I arrive, I reserve the right to leave to protect myself and the other children in my care. Thank you for understanding** I’m currently working full time as a manager in tech and am only babysitting very occasionally to supplement my income. I was a nanny throughout college to a family with two children, including one with autism. I’ve been babysitting for years for children of a variety of ages. I am not currently available for any regularly scheduled, part time, or full time positions. Please don’t hesitate to reach out if you’d like to discuss further.
Hello! I’m Caitlyn, a childcare professional with over 15 years of experience. I hold a bachelor’s degree in Sociology with a minor in Early Childhood Education from Sonoma State University. Currently, I work as a Site Supervisor for Hillsborough Recreation’s Aftercare program, and I’ve had the opportunity to work at various recreation centers over the years. I’ve also been a nanny for five families, caring for children aged 2 to 13, and have experience with newborns and infants, along with roles as a summer camp counselor. I’m reliable, patient, CPR certified, and fully vaccinated (including the COVID booster). I’m available for occasional date night and weekend childcare. Feel free to reach out with any questions—I’d love to assist your family!
“Caitlyn was a fantastic sitter. My daughter loved her and she heads up the aftercare at North School so she is a serious pro. She took my daughter to a play date, has her own car, had a they had a great day. Will definitely have her back again soon. ”
Years ago, my first profile picture on this site was criticized by a potential family for being too strange. I picked one way stranger in response (me in a unicorn onesie) until the 2024 powers that be on this site recently called it inappropriate. So, now I’ve found one off the charts strange with my head half shaved in the middle of a home COVID haircut ;-). Children are SO important to me—yes that means physical safety, but for me it also involves emotional safety. I want deeply for children and young people to love themselves and find their voices as they grow, but to do that they need to see adults who appreciate and take joy in their own uniqueness. That, more than any resume point, is what I offer to kids and families with fierce commitment. I have worked with children and young people in a variety of settings for thirty years. In my early days there was the usual teenage babysitting. I have also worked for summer camps and non-profits--designing, leading, and overseeing children's activities and programs. Next, I taught 6th, 7th, and 8th grade English for the last thirteen years in both Southern California and the Bay Area, followed by ten years of nannying for children of all ages. Finally, I have started to move very organically into parental coaching, upon request of families I care/have cared for. I have special insight into neurodivergent kids and school engagement struggles. I am certified in CPR, First Aid, AED, have taken expressive arts therapy training, and have had multiple experiences working with autistic young people, in addition to being autistic myself. I am happy to help older children with their English homework and do Elmo's voice for the younger children in the fort we just built :) I am tidy, punctual, and you will not find me on my phone or devices while my attention should be on your child. I love and appreciate the curiosity, creativity, kindness, and honesty of all children, and I look forward to being part of the village that helps care for yours. Thanks, Water pronouns: he/him IG: newstoriescallingart Ps. Yes, I know my profile says Chelsea, but I've been through a legal name change which this system "can't" correct until my membership expires. My name is Water, happy to show you my driver's license to silence the dead naming if it would help put your mind at ease. Not mad at caregivers who don't read this far, just mad at computer's needs being given precedence over people's needs.
I have been working with children for about 25 years. I have experience working with multiple children at a time and children different ages, including infants. Working with children has always been my passion. I am very energetic and love taking kids for walks, to the park, library, enjoy doing art projects, read books and just love watching kids grow and watch them learn new things. I also speak German and Bosnia . I am a mother of two school aged children. My son is 17 and daughter is 15 years old. I have worked with many families and therefore have many references. I am available for occasional evening and weekend babysitting.
Hi families! My name is Karol. I’m an experienced babysitter who speaks English and Spanish. I’ve been caring for kids for over 3 years—ranging from 8-month-old babies to 12-year-olds. I’m active, patient, and love doing both outdoor and indoor activities with children. I also offer light housekeeping, pet care, and senior assistance. I’m CPR certified and always make safety a top priority. Looking forward to supporting your family!
“My girls loved Karol”

As of October 2026
Babysitters on UrbanSitter are background checked every year, with every profile individually reviewed by our Trust and Safety team.
1,089 sitters background checked in Portola Valley, CA
4.9 average star rating from total of 8,228 reviews in Portola Valley, CA

"Amina came and helped us out when our babysitter canceled last minute. She was great with our kids. Even our 11 month old son who has stranger anxiety warmed up to her."
Marie C., parent

"She was so flexible and came last minute to help out. The house was really neat when I got home and both kids were asleep. Two thumbs up!"
Jenny S., parent

"Thrisa was amazing! Came over last minute and took amazing care of our 11 month old - including bedtime - she's coming back tomorrow :)"
Jesse D., parent

Submit a request to hear from available sitters.
To sign up with Facebook, we need permission to use your email address.
Sharing your friends list is optional, and allows us to connect you with sitters they book and recommend. Nothing will be shared or posted.

Submit a request to hear from available sitters.
To sign up with Facebook, we need permission to use your email address.
Sharing your friends list is optional, and allows us to connect you with sitters they book and recommend. Nothing will be shared or posted.
In most cities, average response time for last-minute requests is under two minutes.
See which babysitters have been hired by parents at your child's school, preschool, or neighborhood in Portola Valley.
Every babysitter clears an annual background check, offering peace of mind even on short notice.
See parent reviews, repeat families, and average response times to find the right fit fast.
Ideas and strategies for when your plans change and you need a sitter.
See average babysitting rates by city and across the country.
A quick printable card to leave with your sitter in case something unexpected comes up.