The following roles are ideal for 15-year-olds: Babysitter. National Average Salary: £11.70 per hour. ... Dog walker. National Average Salary: £9.19 per hour. ... Pet sitter. National Average Salary: £23,510 per year. ... Café server. National Average Salary: £9.24 per hour. ... Kitchen assistant. ... Kitchen porter. ... Shop assistant. ... Cashier. More items... Dec 13, 2020