| Sebai, Khalid | Public Works Technical Aide | Public Works | 949-644-3348 | |
| Sandefur, Thomas | Assistant City Engineer | Public Works | 949-644-3321 | |
| Suzuki, Tracy | Records Specialist | Public Works | 949-644-3343 | |
| Schweitzer, Theresa | Public Works Finance/Administrative Manager | Public Works | 949-644-3335 | |
| Silva, Robert | Construction Inspection Supervisor | Public Works | 949-270-8131 | |
| Sommers, James | Civil Engineer, Principal | Public Works | 949-644-3326 | |
| Stein, Robert | Assistant City Engineer | Public Works | 949-644-3322 | |
| Sinacori, Michael | Assistant City Engineer | Public Works | 949-644-3342 | |
| Sur, Marissa | Human Resources Manager | Human Resources | 949-644-3302 | |
| Salvini, Barbara | Human Resources Director | Human Resources | 949-644-3259 | |
| Sanchez, Tosha | Human Resources Specialist II | Human Resources | 949-644-3337 | |
| Scott, Rick | Facilities Maintenance Supervisor | Public Works Municipal Operations | 949-644-3067 | |
| Salazar, Juan | Field Maintenance Superintendent | Public Works Municipal Operations | 949-718-3460 | |
| Saldivar, Humberto | Concrete Finisher | Public Works Municipal Operations | 949-718-3461 | |
| Saldana Iii, Ernest | Equipment Operator II | Public Works Municipal Operations | 949-718-3461 | |
| Sinclair, Robert | Lifeguard II | Fire | | |
| Smith, Brad | Fire Captain Ems (7.5%) | Fire | 949-644-3386 | |
| Sutherland, Brett | Fire Captain 112 Hours | Fire | 949-644-3104 | |
| Strack, James | Fire Engineer 112 Hour | Fire | 949-644-3104 | |
| Shank, David | Firefighter Paramedic 112 Hour 22.25% | Fire | 949-644-3104 | |
