| Avina, Jaime | Utilities Specialist | Utilities | 949-718-4418 | |
| Auger, Craig | Utilities Supervisor | Utilities | 949-718-3481 | |
| Aguirre, Richard | Utilities Crew Chief | Utilities | 949-718-3474 | |
| Arechiga, Samuel | Maintenance Operator | Public Works | 949-718-3463 | |
| Auger, Michael | Public Works Supervisor | Public Works | 949-718-3463 | |
| Alvidrez, Michael | Utilities Crew Chief | Utilities | 949-718-3419 | |
| Aguirre, David | Utilities Crew Chief | Utilities | 949-718-3416 | |
| Aman, Matthew | Public Works Inspector II | Public Works | 949-718-1850 | |
| Arciniega, Elizabeth | Recreation Coordinator | Recreation & Senior Services | 949-718-1828 | |
| Angeloff, Anne-Marie | Library Assistant | Library - City | 949-717-3861 | |
| Avila, Jasmin | Librarian I | Library - City | 949-717-3824 | |
| Anderson, Bryce | Fire Captain 112 Hours | Fire | 949-644-3355 | |
| Anderson, Matthew | Fire Engineer 112 Hour | Fire | 949-644-3355 | |
| Alcaraz, Debbie | Administrative Assistant To The Fire Chief | Fire | 949-644-3351 | |
| Arellano, Tosha | Human Resources Analyst, Senior | Human Resources | 949-644-3337 | |
| Almendralo, Rodi | Civil Engineer, Associate | Public Works | 949-644-3334 | |
| Aube, Kyle | Civil Engineer, Associate | Public Works | 949-644-3296 | |
| Aquino, Dan | Civil Engineer - Plan Check, Principal | Community Development | 949-644-3292 | |
| Arregui, Gerardo | Planner, Assistant | Community Development | 949-644-3249 | |
| Aniol, Hali | Fiscal Clerk, Senior | Finance | 949-644-3248 | |
