| Stribling, Jeffrey | Fire Engineer 112 Hour | Fire | 949-644-3355 | |
| Suppe, Dustin | Firefighter Paramedic 112 Hour (Before 1-1-2016) | Fire | 949-644-3355 | |
| Skelly, Matthew | Fire Engineer 112 Hour | Fire | 949-644-3355 | |
| Sodergren, Michael | Firefighter Paramedic 112 Hour (Before 1-1-2016) | Fire | 949-644-3355 | |
| Suzuki, Tracy | Records Specialist | Public Works | 949-644-3343 | |
| Sinacori, Michael | Assistant City Engineer | Public Works | 949-644-3342 | |
| Schweitzer, Theresa | Public Works Finance/Administrative Manager | Public Works | 949-644-3335 | |
| Seo, Leah | Office Assistant | Public Works | 949-644-3331 | |
| Sommers, James | Transportation Manager/City Traffic Engineer | Public Works | 949-644-3326 | |
| Smouse, Trevor | Management Analyst, Senior | Public Works | 949-644-3325 | |
| Stein, Robert | Assistant City Engineer | Public Works | 949-644-3322 | |
| Sandefur, Thomas | Assistant City Engineer | Public Works | 949-644-3321 | |
| Setter, Gracie | Human Resources Specialist | Human Resources | 949-644-3304 | |
| Shelton, Chad | Building Inspector II | Community Development | 949-644-3295 | |
| Schank, Deborah | Administrative Assistant | Community Development | 949-644-3284 | |
| Skarin, Eric | Civil Engineer - Plan Check, Senior | Community Development | 949-644-3270 | |
| Sanchez, Chris | Building Inspector, Principal | Community Development | 949-644-3266 | |
| Salvini, Barbara | Human Resources Director | Human Resources | 949-644-3259 | |
| Suarez, Christian | Facilities Maintenance Worker II | Recreation & Senior Services | 949-644-3244 | |
| Suzuki, Michelle | Paralegal | City Attorney | 949-644-3191 | |
