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Sub Jobs in California (NOW HIRING)

Staco Systems

Sub-Systems Senior Assembler

Irvine, CA · On-site

$20 - $28/hr

Senior Sub-Systems Assembler Job Summary Perform electro-mechanical assembly including soldering, wire cutting, connector crimping, etc. Works from computer blueprints, established process ...

CommonSpirit Health

RNA Sub Acute

Camarillo, CA · On-site

$25 - $28.09/hr

RNA Sub Acute St Johns Hospital Camarillo, Camarillo, California Inspired by faith. Driven by innovation. Powered by humankindness. CommonSpirit Health is building a healthier future for all through ...

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Sub information

What is a sub?

In the context of employment, 'Subs' is often shorthand for 'Substitute Teachers.' Substitute teachers temporarily fill in for regular teachers who are absent due to illness, vacation, or other reasons. Their responsibilities include following lesson plans, managing classrooms, and ensuring students remain engaged with their coursework. Substitute teachers need to be adaptable, as they may work with different age groups and subjects on short notice. They play a crucial role in maintaining continuity in students' education.

What are some common challenges faced by a substitute teacher when entering a new classroom?

One of the main challenges substitute teachers encounter is quickly adapting to unfamiliar classroom environments and routines. They must establish rapport with students who may test boundaries and ensure lessons continue smoothly, often with limited background information. Effective substitutes are flexible, communicate clearly, and manage classroom behavior while maintaining the regular teacher’s expectations. Building these skills helps substitutes succeed and be welcomed back for future assignments.

What are the key skills and qualifications needed to thrive as a substitute teacher, and why are they important?

To thrive as a Substitute Teacher, you need a solid understanding of classroom management, lesson delivery, and general educational practices, usually supported by a bachelor's degree and, in many cases, a teaching certification or substitute permit. Familiarity with digital classroom tools, attendance systems, and lesson planning software is often required. Strong communication, adaptability, and patience are vital soft skills for engaging students and handling diverse classroom dynamics. These competencies ensure continuity of learning, maintain classroom order, and support student success during teacher absences.

What is the difference between Sub vs Delivery Driver?

AspectSubDelivery Driver
Required CredentialsFood Handler's Permit (if applicable), sometimes a driver's licenseValid driver's license, vehicle insurance
Work EnvironmentKitchen, restaurant, or catering settingOn the road, various locations
Employer & Industry UsageRestaurants, catering services, food delivery platformsFood delivery companies, courier services
Common Search & Comparison IntentUnderstanding roles in food service and deliveryComparing delivery roles in logistics and food industry

The main difference is that a Sub typically refers to a substitute worker or a short-term staff member in a restaurant or food service setting, while a Delivery Driver is responsible for transporting food or goods to customers. Both roles involve driving, but Sub roles focus on staffing needs, whereas Delivery Drivers focus on logistics and delivery tasks.

What are the most commonly searched types of Sub jobs in California?

The most popular types of Sub jobs in California are:

Infographic showing various Sub job openings in California as of August 2026, with employment types broken down into 44% Full Time, and 56% Part Time. Highlights an 100% In-person job distribution.

Sub-Systems Senior Assembler

Staco Systems

Irvine, CA • On-site

Full-time

Posted 16 days ago

Job description

Senior Sub-Systems Assembler


Job Summary

Perform electro-mechanical assembly including soldering, wire cutting, connector crimping, etc. Works from computer blueprints, established process specifications, written and verbal instructions. Assignments vary, can be complex, and personal judgment may be used to resolve problems.


Receives Direction From:

Floor Supervisor / Manufacturing Manager


Provides Direction to:

May act as lead to Sub-Systems Assemblers.

Examples of Essential Functions:

Responsibilities include, but are not limited to, the following:

  • Ability to solder cables, connectors, etc. to IPC Standards.
  • Ability to read blueprints and schematics without supervision.
  • Assemble assemblies per established processes and quality specifications.
  • Ability to use a computer to read and understand documentation, such as prints, wiring diagrams, bills of material, and bills of operation.
  • Ability to follow production schedules, prioritizing work order due dates throughout the entire cell.
  • Ability to train cell members in a team based environment.
  • Report any issues with BOMs and Routings to management.
  • Ability to follow written and verbal instructions and work with minimal supervision.
  • Use all materials and equipment in accordance with the code of safe practices.


Qualifications Guidelines


Education/training/experience:

At least five years experience in mechanical and electro-mechanical environment. Experience as a cell lead preferrable. Previous wiring and soldering experience required. High school diploma or GED equivalent.


Physical Standards:

  • This position requires frequently sitting, standing, reaching, walking, and handling/grasping of materials in manufacturing.
  • This position may rarely require kneeling, bending, squatting.
  • Must have finger dexterity, ability to use keyboard/ten key.
  • Good eyesight for use of microscopes and small part assembly.
  • Reach, stoop and lift parts or tools, typically weighing 20 pounds or less.
  • Ability to push/pull up to 50 pounds.
  • Ability to lift up to 50 pounds.
  • Constantly sitting, standing, walking, and operating a computer workstation.
  • Reasonable accommodations will be considered that would allow the employee to perform the essential functions of this job.


Staco Systems is an EEO/AA M/F/V/D employer.

Staco Systems does provide reasonable accommodations for individuals who are unable to use our online applicant system due to a disability. Please contact us at 949.297.8700.

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