| Shapirshteyn, Bryan | Senior Pool Lifeguard | Recreation & Senior Services | | |
| Serbeniuk, Gary | Recreation Leader, Senior | Recreation & Senior Services | | |
| Schmillen, Justin | Deputy Recreation & Senior Services Director | Recreation & Senior Services | 949-644-3160 | |
| Schilling, Arianna | Recreation Coordinator, Assistant | Recreation & Senior Services | | |
| Schilling, Chloe | Recreation Coordinator | Recreation & Senior Services | 949-644-3154 | |
| Schaeffer, Lauren | Recreation Coordinator, Assistant | Recreation & Senior Services | | |
| Santoni, Shane | Senior Pool Lifeguard | Recreation & Senior Services | | |
| Sanchez, Jasmine | Recreation Coordinator, Assistant | Recreation & Senior Services | | |
| Sain, Cristin | Recreation Coordinator | Recreation & Senior Services | 949-270-8155 | |
| Suzuki, Tracy | Records Specialist | Public Works | 949-644-3343 | |
| Schweitzer, Theresa | Public Works Finance/Administrative Manager | Public Works | 949-644-3335 | |
| Sanchez, Jessica | Permit Technician II | Public Works | 949-644-3041 | |
| Seo, Leah | Office Assistant | Public Works | 949-644-3331 | |
| Shane, Samuel | Contractor | Public Works | | |
| Shaffer, Sterling | Contractor | Public Works | | |
| Sanabria, Philip | Contractor | Public Works | | |
| Smouse, Trevor | Management Analyst, Senior | Public Works | 949-644-3325 | |
| Silva, Robert | Construction Inspection Supervisor | Public Works | 949-270-8131 | |
| Sinacori, Michael | Assistant City Engineer | Public Works | 949-644-3342 | |
| Sandefur, Thomas | Assistant City Engineer | Public Works | 949-644-3321 | |
