Chemicals & Materials Jobs in California with F-1 OPT Sponsorship
Chemicals and materials F-1 OPT sponsorship jobs in California span the state's leading research corridors, from Bay Area biotechnology and materials science firms to Southern California's specialty chemicals and aerospace materials sectors. Companies like Chevron, Lam Research, and Applied Materials have histories of hiring OPT candidates into roles aligned with STEM degree requirements, extending OPT eligibility up to three years.
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At GF, we see our company as a forward-thinking leader in our field. Since 1802, we have been embracing innovations and sustainable solutions of the highest quality that add value to people’s lives around the globe.
Join us to be part of a forward-thinking, people-centered company where your ideas and contributions truly matter.
This is your opportunity to make a real impact in a collaborative, international environment.
The Plastic Fabrication Technician is responsible for fabricating, assembling, and modifying plastic components according to technical drawings and specifications. This role involves the use of specialized tools and equipment to cut, weld, bend, and finish plastic materials with a high degree of precision. The technician plays a critical role in supporting production, maintenance, and custom fabrication needs while ensuring quality, safety, and efficiency.
Essential Duties & Responsibilities:
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Fabricate plastic items using various techniques, such as welding, drilling, and sawing.
-
Interpret blueprints, drawings, and specifications to determine fabrication requirements for plastic parts and assemblies.
-
Maintains a high quality and keeps scrap to a minimum.
-
Measure and inspect components to ensure conformance with quality standards and tolerances.
-
Jointly responsible for on-time delivery of products.
-
Maintain a clean and organized work area and perform routine maintenance on tools and equipment.
-
Repairs and reworks parts as necessary.
-
Monitors critical dimensions and adjust machines for different material and/or dimensions.
-
Prepare test/sample welds and perform various tests.
-
Assists with building crates to box finished goods for storage or shipment, as necessary.
-
Follows the procedures as presented in the Employee Handbook, Etiquette Brochure, department procedures, captures contact information, and follows verbal, written or diagram instructions as provided by supervisors and managers.
-
Committed to the protection of the environment and the health and safety of our employees, customers, and neighbors. Responsible for maintaining and continuously improving our Environmental Management System (EMS).
-
Adhere to safety protocols, environmental standards, and PPE requirements during all work activities.
-
Performs all other duties as assigned.
Required Skills/Abilities:
-
Ability to read blueprints with guidance from experienced fabricators.
-
Ability to read and use tape measurer.
-
Ability to use certain plastic fabrication tools with moderate supervision.
-
Ability to carry out instructions with moderate supervision.
-
Performs all operations according to prescribed safety principles.
-
Mechanically inclined.
Education and Experience:
-
High school diploma or GED required, trade school or technical training in plastic fabrication or industrial manufacturing preferred.
-
1–3 years of experience in plastic fabrication, machining, or assembly in a production or shop environment.
-
Experience with fabrication, mechanical assembly, plastic welding and/or related experience.
-
Experience welding polypropylene PP, HDPE, PVDF & PVC plastics.
Working Conditions / Physical Requirements:
-
Frequent standing, bending, lifting, and working with hands in a production setting.
-
Ability to lift and move up to 50 lbs. regularly.
Use of PPE such as gloves, eye protection, and steel-toe shoes required.
Please submit your application via the ‘Apply’ button.

At GF, we see our company as a forward-thinking leader in our field. Since 1802, we have been embracing innovations and sustainable solutions of the highest quality that add value to people’s lives around the globe.
Join us to be part of a forward-thinking, people-centered company where your ideas and contributions truly matter.
This is your opportunity to make a real impact in a collaborative, international environment.
The Plastic Fabrication Technician is responsible for fabricating, assembling, and modifying plastic components according to technical drawings and specifications. This role involves the use of specialized tools and equipment to cut, weld, bend, and finish plastic materials with a high degree of precision. The technician plays a critical role in supporting production, maintenance, and custom fabrication needs while ensuring quality, safety, and efficiency.
Essential Duties & Responsibilities:
-
Fabricate plastic items using various techniques, such as welding, drilling, and sawing.
-
Interpret blueprints, drawings, and specifications to determine fabrication requirements for plastic parts and assemblies.
-
Maintains a high quality and keeps scrap to a minimum.
-
Measure and inspect components to ensure conformance with quality standards and tolerances.
-
Jointly responsible for on-time delivery of products.
-
Maintain a clean and organized work area and perform routine maintenance on tools and equipment.
-
Repairs and reworks parts as necessary.
-
Monitors critical dimensions and adjust machines for different material and/or dimensions.
-
Prepare test/sample welds and perform various tests.
-
Assists with building crates to box finished goods for storage or shipment, as necessary.
-
Follows the procedures as presented in the Employee Handbook, Etiquette Brochure, department procedures, captures contact information, and follows verbal, written or diagram instructions as provided by supervisors and managers.
-
Committed to the protection of the environment and the health and safety of our employees, customers, and neighbors. Responsible for maintaining and continuously improving our Environmental Management System (EMS).
-
Adhere to safety protocols, environmental standards, and PPE requirements during all work activities.
-
Performs all other duties as assigned.
Required Skills/Abilities:
-
Ability to read blueprints with guidance from experienced fabricators.
-
Ability to read and use tape measurer.
-
Ability to use certain plastic fabrication tools with moderate supervision.
-
Ability to carry out instructions with moderate supervision.
-
Performs all operations according to prescribed safety principles.
-
Mechanically inclined.
Education and Experience:
-
High school diploma or GED required, trade school or technical training in plastic fabrication or industrial manufacturing preferred.
-
1–3 years of experience in plastic fabrication, machining, or assembly in a production or shop environment.
-
Experience with fabrication, mechanical assembly, plastic welding and/or related experience.
-
Experience welding polypropylene PP, HDPE, PVDF & PVC plastics.
Working Conditions / Physical Requirements:
-
Frequent standing, bending, lifting, and working with hands in a production setting.
-
Ability to lift and move up to 50 lbs. regularly.
Use of PPE such as gloves, eye protection, and steel-toe shoes required.
Please submit your application via the ‘Apply’ button.
Job Roles in Chemicals & Materials in California
See all 188+ Chemicals & Materials California jobs
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Get Access To All JobsFrequently Asked Questions
Which chemicals and materials companies sponsor F-1 OPT visas in California?
California-based employers with documented patterns of hiring F-1 OPT candidates in chemicals and materials include Chevron, Lam Research, Applied Materials, Henkel, and W.R. Grace. Companies in the semiconductor materials space around San Jose and Santa Clara, as well as specialty chemical producers in the Los Angeles Basin, frequently post roles open to OPT candidates given the STEM-eligible nature of most positions in those fields.
Which cities in California have the most chemicals and materials F-1 OPT sponsorship jobs?
The San Francisco Bay Area, particularly San Jose and Santa Clara, concentrates semiconductor and advanced materials employers. Los Angeles and Long Beach host specialty chemical manufacturers and aerospace materials suppliers. San Diego has a notable cluster of materials science companies tied to its biotech and defense sectors. Sacramento and the Central Valley have chemical processing and agricultural chemistry employers, though at lower volumes than coastal metros.
What types of chemicals and materials roles typically qualify for F-1 OPT sponsorship?
Roles that qualify for F-1 OPT, including the 24-month STEM OPT extension, generally require a direct connection to your degree field. In chemicals and materials, this includes process engineer, materials scientist, chemical engineer, R&D chemist, polymer scientist, quality engineer, and failure analysis engineer positions. The key requirement is that the role must provide practical training directly related to your qualifying STEM degree program.
How do I find chemicals and materials F-1 OPT sponsorship jobs in California?
Migrate Mate is built specifically for F-1 OPT job seekers and filters chemicals and materials roles in California by visa sponsorship availability, saving you time spent identifying which employers actually hire OPT candidates. You can search by industry, location, and OPT eligibility in one place. Beyond Migrate Mate, targeting employers with established university partnerships at Caltech, UC Berkeley, and UCLA can also surface OPT-friendly hiring pipelines in this sector.
Are there any California-specific considerations for F-1 OPT sponsorship in the chemicals and materials industry?
California's strict environmental regulations under CalEPA and CARB mean chemicals employers often prioritize candidates with knowledge of state-specific compliance frameworks, which can strengthen your application. Additionally, California's dense university research ecosystem means many employers are familiar with OPT timelines and I-983 training plan requirements. Some defense-adjacent materials roles may require security clearances that are unavailable to F-1 visa holders, so confirming clearance requirements before applying is important.
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