To become a firefighter in California, one must meet certain minimum requirements and complete a series of steps including education, certification, and physical testing. Key requirements include:

• Being at least 18 years old to become a seasonal firefighter; 21 years old for permanent positions.
• Being a U.S. citizen with good character and no physical/mental impairments.
• Possessing a high school diploma, GED, or California Certificate of Proficiency.
• Having a valid California driver's license.
• Obtaining EMT (Emergency Medical Technician) certification.
• Passing the Candidate Physical Ability Test (CPAT).

Typical steps to become a firefighter in California are:

1. Meet minimum qualifications as above.
2. Earn EMT certification, sometimes required before or after hiring.
3. Consider additional education such as a fire science certificate or associate degree.
4. Gain experience through cadet, volunteer, or recruit programs if possible.
5. Take the Firefighter Candidate Assessment (FCA) exam.
6. Complete interviews and possibly other written or oral tests.
7. Pass a fitness assessment such as the CPAT.
8. Pass additional evaluations including background check, medical and psychological exams, and drug tests.
9. Complete training at a fire academy after hiring, which can last 10–24 weeks.

Generally, the entire process can take between 2 to 5 years because of competitive hiring and training timelines.