Cambridge DPW seeks a qualified individual to supervise the Water-By-Bike Tree Ambassador program. The supervisor will work with a group of approximately 6 summer interns to lead and coordinate daily activities to support work objectives related to the Water-By-Bike summer program. College coursework in urban forestry, environmental science, urban planning, or education preferred. Bachelor’s degree preferred. Equivalent experience may substitute for education. Demonstrated experience in supervisory role and team-building. Enthusiasm and flexibility; ability to “think on one’s feet” to revise and/or adapt to schedule changes.  A demonstrated interest in environmental stewardship and ability to engage with the public on these issues. Familiarity with Cambridge preferred. Must be comfortable riding a bicycle in urban environment. The City of Cambridge’s workforce, like the community it serves, is diverse.   Applicants must have the ability to work and interact effectively with individuals and groups with a variety of identities, cultures, languages, backgrounds, and ideologies. $20.00/hour.  Submit both your resume and cover letter via email to: [email protected] or to Personnel Dept, Room 309, City Hall, 795 Massachusetts Avenue, Cambridge MA  02139. Fax 617-349-4312.  We are an AA/EEO Employer. Position will remain open until filled.