| Suarez, Christian | Facilities Maintenance Worker II | Recreation | 949-644-3244 | |
| Serbeniuk, Gary | Recreation Leader, Senior | Recreation | | |
| Soltes, Dennis | Recreation Leader | Recreation | | |
| Schilling, Chloe | Pool Swim Instructor | Recreation | | |
| Schmillen, Justin | Deputy Recreation & Senior Services Director | Recreation | 949-644-3160 | |
| Santibanez, Erick | Maintenance Aide | Public Works Municipal Operations | 949-718-3463 | |
| Springer, Charles | Management Analyst, Senior | Public Works Municipal Operations | 949-718-3466 | |
| Sanchez, Yair | Maintenance Worker I | Public Works Municipal Operations | 949-718-3461 | |
| Saldivar, Humberto | Concrete Finisher | Public Works Municipal Operations | 949-718-3461 | |
| Salazar, Juan | Superintendent | Public Works Municipal Operations | 949-718-3460 | |
| Saldana iii, Ernest | Equipment Operator II | Public Works Municipal Operations | 949-718-3461 | |
| Smouse, Trevor | Management Analyst, Senior | Public Works | 949-644-3325 | |
| Silva, Robert | Construction Inspection Supervisor | Public Works | 949-270-8131 | |
| Schweitzer, Theresa | Public Works Finance/Administrative Manager | Public Works | 949-644-3335 | |
| Suzuki, Tracy | Records Specialist | Public Works | 949-644-3343 | |
| Sandefur, Thomas | Assistant City Engineer | Public Works | 949-644-3321 | |
| Sanchez, Jessica | Permit Technician II | Public Works | 949-644-3041 | |
| Sinacori, Michael | Assistant City Engineer | Public Works | 949-644-3342 | |
| Stein, Robert | Assistant City Engineer | Public Works | 949-644-3322 | |
| Sommers, James | City Traffic Engineer | Public Works | 949-644-3326 | |
