| Alexander, Erin | Fire Engineer 112 Hour | Fire | 949-644-3104 | |
| Atwood, Ethan | Firefighter Paramedic 112 Hour (On Or After 1-1-2016) | Fire | 949-644-3113 | |
| Aniol, Hali | Fiscal Clerk, Senior | Finance | 949-644-3248 | |
| Arechiga-Camacho, Sonia | Fiscal Clerk, Senior | Finance | 949-644-3137 | |
| Asato, Natalie | Human Resources Analyst, Senior | Human Resources | 949-270-8141 | |
| Arellano, Tosha | Human Resources Analyst, Senior | Human Resources | 949-644-3337 | |
| Avila, Jasmin | Librarian I | Library - City | 949-717-3824 | |
| Angeloff, Anne-Marie | Library Assistant | Library - City | 949-717-3861 | |
| Aune, Tor | Lifeguard I | Fire | | |
| Alarcon, Cruz | Lifeguard I | Fire | | |
| Acevedo-Schiesel, Daniela | Lifeguard I | Fire | | |
| Aarons, Zephyr | Lifeguard I | Fire | | |
| Ambrose, Trevor | Lifeguard II | Fire | | |
| Aigner, Jason | Lifeguard II | Fire | | |
| Arregui, Gerardo | Planner, Assistant | Community Development | 949-644-3249 | |
| Aman, Matthew | Public Works Inspector, Senior | Public Works | 949-718-1850 | |
| Anderson, Jennifer | Purchasing And Contracts Administrator | Finance | 949-644-3080 | |
| Alexander, Brason | Recreation & Senior Services Manager | Recreation & Senior Services | 949-644-3150 | |
| Arciniega, Elizabeth | Recreation Coordinator | Recreation & Senior Services | 949-718-1828 | |
| Arroyo, Britney | Recreation Coordinator, Assistant | Recreation & Senior Services | | |
