Plastic Injection Operator Jobs in California (NOW HIRING)

About Schaefer Plastics

At Schaefer Plastics, we manufacture industry-leading solutions and drive responsible practices towards a sustainable future for generations to come. As a family-owned company since 1937, we are deeply committed to delivering exceptional customer care through high-quality, innovative waste and packaging solutions. Our customers and their satisfaction are paramount to our business; we strive to understand their needs and exceed their expectations at every turn.
We are a global injection molding manufacturer, producing durable waste and recycling carts, and pioneering reusable packaging systems that reduce carbon footprints. Our dynamic and inclusive culture fosters personal and professional growth, making us an ideal employer for career advancement.

Position Summary

The Shift Leader is responsible for overseeing daily shipping and warehouse operations during an assigned shift. This role ensures materials and finished goods are received, stored, staged, and shipped accurately, safely, and on time. The Shift Leader also provides day-to-day leadership for shipping and warehouse team members, supports process improvements, and helps maintain an organized, efficient, and safety-focused work environment.

Essential Duties and Responsibilities

• Lead the daily operations of the shipping and receiving department during the assigned shift
• Oversee shipping and receiving activities to ensure accuracy, completeness, and timely movement of materials and finished goods
• Verify shipments and related documentation to ensure the correct items and quantities are shipped and received
• Maintain shipping, receiving, and inventory-related records and activity documents
• Ensure materials, components, finished goods, and other items are placed in the proper storage locations
• Maintain warehouse and storage areas in a safe, clean, organized, and orderly manner
• Communicate and coordinate with internal departments and other shifts to remove obstacles and support smooth operations
• Identify issues, solve problems, and support continuous improvement efforts within the department
• Monitor work practices to ensure compliance with company procedures, safety expectations, and operational standards
• Train, coach, direct, and motivate shipping and warehouse team members and temporary staff
• Support performance management, accountability, and development of assigned employees
• Perform other duties as assigned by management

Supervisory Responsibilities

• Lead an assigned shipping/warehouse team of up to 30 employees and temporary associates
• Provide day-to-day directions, training, coaching, and support for shift personnel

Qualifications

• Minimum of 3 years of prior shipping, warehouse, or logistics leadership experience; manufacturing experience preferred
• High school diploma or GED required; technical training or relevant degree preferred
• Intermediate computer skills, including Microsoft Office
• Strong organizational, leadership, and motivational skills
• Effective verbal and written communication skills
• Strong problem-solving and decision-making ability
• Ability to work in a fast-paced manufacturing environment and manage competing priorities

Skills and Competencies

• Ability to read and interpret safety rules, operating instructions, procedure manuals, and shipping documents
• Ability to prepare routine reports and correspondence
• Ability to communicate effectively with employees, leaders, and cross-functional partners
• Basic to intermediate math skills, including working with whole numbers, fractions, decimals, rates, ratios, and percentages
• Ability to solve practical problems and make sound decisions in a fast-paced environment
• Strong attention to detail, follow-through, and accountability
• Demonstrated leadership, teamwork, and professionalism
• Commitment to safety, quality, and continuous improvement

Work Environment and Physical Requirements

• Regular standing and walking throughout the shift
• Frequent use of hands for handling materials and performing shipping and warehouse tasks
• Frequent reaching, bending, stooping, kneeling, or crouching
• Regular reading of documents and use of computer screens
• Frequent communication with employees and internal partners
• Ability to lift up to 25 pounds regularly and up to 50 pounds occasionally
• Work is performed in a manufacturing and warehouse environment with exposure to moving mechanical parts, vibration, temperature changes, fumes or airborne particles, and moderate to loud noise levels

Why Join Schaefer Plastics

At Schaefer Plastics, you will join a company with a long-standing reputation for quality, innovation, and customer commitment. This is an opportunity to play an important leadership role in daily operations while contributing to a team-focused culture that values safety, accountability, and continuous improvement

Schaefer Plastics is proud to be an Equal Opportunity Employer. We are committed to providing equal employment opportunities to all applicants regardless of race, color, religion, creed, national origin, religion, gender or gender identity/expression, sexual orientation, age, disability, genetic information, military or veteran status, marital status, pregnancy or any other characteristic protected by federal, state or local law.

Applicant Data & Privacy Notice: Schaefer Plastics North America, LLC collects and uses the personal information you provide during the application and recruiting process to evaluate your qualifications, communicate with you, schedule interviews, make hiring decisions, and, if selected, complete offer and onboarding activities. Applicant information may include your resume, contact information, work history, education, skills, interview notes, references, and other information you choose to provide or that is needed for the position. Please do not submit sensitive personal information irrelevant to the role, such as Social Security numbers, banking information, medical information, copies of identification, or other unnecessary personal documents, unless specifically requested at the appropriate stage of the hiring process. Your information will only be shared with individuals who have a legitimate need to know for recruiting and hiring purposes, such as Human Resources, recruiters, hiring managers, interview participants, and approved service providers or systems used in the recruiting process. Applicant information will not be forwarded to other departments, locations, or legal entities, or considered for unrelated future openings unless permitted by law or you have provided the required consent. Applicant records will be retained only as long as necessary for recruiting, legal, compliance, and recordkeeping purposes, and then deleted or destroyed in accordance with applicable retention requirements. If we would like to keep your information on file for future opportunities, we will request your consent where required. Questions about how applicant data is handled may be directed to Human Resources or to the appropriate SSI SCHAEFER data protection contact.