Administrative Assistant
Quick Summary
Minimum of two (2) years of administrative, customer service, or office support experience. High School diploma, 2 years of college preferred. Strong verbal and written communication skills.
Sebastian is a premier provider of communications and construction services in California. With more than 70 years of experience, Sebastian is passionate about providing people with a great place to work. Our high growth and dynamic model offers employees the opportunity for career advancement. As a family company, we value the expertise and experience of our team.
Job Description:
The Administrative Assistant is responsible for providing administrative and customer service support to ensure the efficient operation of the Customer Service Department. This position serves as a key point of contact for customers, employees, and vendors while assisting with scheduling, work orders, billing support, data entry, and general office administration.
Job Duties:
- Provide exceptional customer service to internal and external customers.
- Answer and direct incoming phone calls professionally and courteously.
- Assist with customer inquiries, service requests, and follow-up communications.
- Assist with scheduling service appointments and coordinating technician dispatches.
- Create, update, and maintain customer accounts and service records.
- Work order, invoice, and job creation including knowledge of appropriate cost codes.
- Prepare and process work orders, invoices, and related documentation.
- Enter and maintain accurate data within company software systems.
- Interact with subcontractors, vendors, and clients by telephone/email to obtain information about prelims, changes, prequalification, and project costs.
- Obtaining information to complete and mail out preliminary notices in a timely manner.
- Verify subcontractors' licensing and insurance.
- Maintain current knowledge of company workflow and procedures.
- Maintain confidentiality of customer and company information.
- Maintain electronic and paperless filing systems.
- Assist in maintaining neat and organized paperless folders in appropriate systems.
- Support various administrative functions for the Customer Service and Contract Administration Departments.
- Assist with departmental initiatives, process improvements, and special projects.
- Ordering, stocking and organizing office supplies, break rooms and conference rooms.
- Other duties and responsibilities may be assigned as necessary.
Job Requirements:
- Minimum of two (2) years of administrative, customer service, or office support experience.
- High School diploma, 2 years of college preferred.
- Strong verbal and written communication skills.
- Excellent customer service and interpersonal skills.
- Strong organizational skills with attention to detail.
- Ability to multitask and prioritize workload effectively.
- Proficiency in Microsoft Office Suite, including Word, Excel, Outlook, and Teams.
- Strong data entry and computer skills.
Physical, Mental and Environmental Requirements:
- All requirements may be modified to reasonably accommodate individuals with disabilities.
- Ability to sit or stand for extended periods
- Use of office equipment (typing, filing, phones, etc.)
- Occasional lifting (up to 20 pounds) and bending
- Comfortable working in an office setting with potential noise
- Ability to adapt to a dynamic work environment
Compliance:
- If you need an accommodation as part of the employment process, please contact Human Resources.
- Sebastian is an Equal Opportunity Employer, including disabled and veterans.
- If you want to view the Pay Transparency Policy Statement, please click the link: English
Location & Eligibility
Listing Details
- Posted
- June 19, 2026
- First seen
- June 19, 2026
- Last seen
- June 21, 2026
Posting Health
- Days active
- 0
- Repost count
- 0
- Trust Level
- 63%
- Scored at
- June 19, 2026
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