| Sodergren, Michael | Firefighter 112 Hours | Fire | 949-644-3355 | |
| Salerno, Robert | Firefighter 112 Hours | Fire | 949-644-3104 | |
| Skelly, Matthew | Fire Engineer 112 Hourr | Fire | 949-644-3355 | |
| Shook, Travis | Fire Engineer 112 Hour | Fire | 949-644-3104 | |
| Strack, James | Fire Engineer 112 Hour | Fire | 949-644-3104 | |
| Smith, Brad | Fire Captain Ems (7.5%) | Fire | 949-644-3386 | |
| Spiker, Chad | Fire Captain 112 Hours | Fire | 949-644-3104 | |
| Sutherland, Brett | Fire Captain 112 Hours | Fire | 949-644-3104 | |
| Stocks, Nicholas | Fire Battalion Chief 112 Hours | Fire | 949-644-3363 | |
| Scott, Rick | Field Maintenance Supervisor | General Services | 949-644-3067 | |
| Salazar, Juan | Field Maintenance Superintendent | General Services | 949-718-3460 | |
| Suarez, Christian | Facilities Maintenance Worker II | Recreation | 949-644-3244 | |
| Saldivar, Humberto | Equipment Operator II | General Services | 949-718-3461 | |
| Saldana Iii, Ernest | Equipment Operator II | General Services | 949-718-3461 | |
| Sarnowski, Allison | Department Assistant | Library - City | 949-717-3804 | |
| Sonntag, Kristen | Department Assistant | Harbor Department | 949-270-8159 | |
| Silva, Robert | Construction Inspection Supervisor | Public Works | 949-270-8131 | |
| Snyder, Searcy | Code Enforcement Officer I | Building, Code & WQ Enforcement, Community Development | 949-644-3286 | |
| Skarin, Eric | Civil Engineer, Senior - Plan Check | Community Development | 949-644-3270 | |
| Sommers, James | Civil Engineer, Principal | Public Works | 949-644-3326 | |
