Activity Specialist: STEM (Castle Hill YMCA)
YMCA of Greater New York
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Post Date: Sep 23, 2026
Job Type: Part Time
Start Date: - n/a -
Salary: $25.00 Hourly
Location: US - New York - Bronx
Job Reference: - n/a -
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Description
The Castle Hill YMCA is seeking an Activity Specialist. Specifically, the Activity Specialist will prepare and deliver age-appropriate STEM instruction for school-aged children in the Y Afterschool program.


Key Responsibilities:

Design a comprehensive STEM curriculum using detailed lesson plans with clear, measurable goals and objectives tailored to stimulate interest and engagement across various grade levels.
Lead and facilitate daily STEM activities, ensuring a safe, inclusive, and stimulating learning environment.
Promote an inclusive, welcoming, and respectful environment that embraces the diversity of all participants.
Create and maintain a strength-based, youth-focused atmosphere that is consistent and sensitive to the needs of participants with learning, emotional, or behavioral differences.
Ensure the health, safety, and well-being of participants in the program by providing appropriate supervision at all times.
Work cooperatively with Afterschool Group Leaders, professional staff, teachers, other programs, and school staff.
Adhere to all Office of Children and Family Services (OCFS), Department of Health (DOH), YMCA of Greater New York, school partner, and funder standards, expectations, and regulations.
Maintain accurate program documentation (sign-in/out forms, behavior reports, and incident reports, as appropriate).
Serve as a positive role model for participants.
Understand and communicate the YMCA’s core values and the goals of the Y Afterschool Program to participants and caregivers.
Develop and maintain positive relationships with parents/guardians and caregivers through regular communication about their child’s strengths and areas for growth.
Actively participate in training sessions, designated meetings, and special events.


Desired Skills & Experience:

High School Diploma or equivalent required. College credits and formal education in a related field are preferred. Preference is given to individuals who are already experts in their field or college or graduate students working toward such specialization.
Minimum of two (2) years of experience in the specific discipline of science, technology, engineering, or math.
Direct experience working with children under the age of 13.
Content expert in the designated subject matter.
General knowledge of Microsoft Word, Excel, and PowerPoint.
Strong interpersonal skills, leadership qualities, and comfortable working with diverse youth and adults.

Skills
How to Apply:
If you would like to be a member of our dynamic team, please complete our online application and submit your résumé and a thoughtful cover letter that explains your interest in the role and our organization.


Notes
Benefits:
The YMCA of Greater New York offers a variety of benefits to its staff members, including retirement benefits, medical, paid time off, free YMCA membership, and more! Benefit eligibility is determined by an individual’s employment status (i.e., full-time or part-time), tenure, and/or the number of hours scheduled to work. Click here for more information.



Contact Details

URL: https://ymcanyc.csod.com/ux/ats/careersite/1/home/requisition/3359?c=ymcanyc