Senior Associate Administrator, HSE

Job Type:

Plains is an industry-leading transportation and midstream provider specializing in transportation, storage, processing and marketing solutions for crude oil. We own an extensive network of pipeline transportation, terminalling, storage and gathering assets in key oil producing basins and transportation corridors and at major market hubs in the United States and Canada. The company is headquartered in Houston, Texas.

We’re on the lookout for passionate self‑starters who thrive in fast‑moving, collaborative, and innovative environments.

Position Title: HSE Administrative Assistant

Department: Health, Safety & Environmental (HSE)

Location: Houston, TX

Reports To: Manager, Occupational Health & Administrative Services

Plains is seeking a highly organized and proactive HSE Administrative Assistant to support the Health, Safety & Environmental (HSE) organization. This role provides administrative, financial, communications, and project coordination support to multiple HSE functions while helping drive operational efficiency across the department.

The successful candidate will serve as a key resource for HSE leadership and team members by managing invoice processing, coordinating events and meetings, supporting departmental communications, maintaining administrative systems, and identifying opportunities to improve processes and workflows.

Responsibilities

• Administrative Support

• Provide administrative support to HSE leadership and team members.

• Coordinate meetings, visitor requests, catering, team events, and special projects.

• Serve as a co-primary point of contact for HSE administrative requests and inquiries.

• Assist with document preparation, presentations, reports, meeting materials, and departmental communications.

• Coordinate vendors, logistics, catering, registrations, communications, and event materials.

• Identify opportunities to improve administrative processes and increase team efficiency.

• Invoice Management & Support

• Process and code high-volume invoices accurately and efficiently within Oracle.

• Ensure compliance with company financial, tax, and accounting requirements.

• Research and resolve invoice discrepancies by collaborating with vendors and internal stakeholders.

Qualifications Required

• High school diploma or equivalent required.

• 2+ years of administrative, project coordination, or office management experience.

• Demonstrated experience managing multiple priorities in a fast-paced environment.

• Strong organizational, communication, and customer service skills.

• Advanced proficiency with Microsoft Office Suite, including Outlook, Excel, PowerPoint, and Teams.

• Strong attention to detail and ability to maintain confidentiality.

Preferred

• Experience with Oracle, SAP, or other enterprise financial systems.

• Event planning and project coordination experience.

Key Competencies

• Administrative Excellence

• Financial & Invoice Administration

• Process Improvement

• Event Planning & Execution

• Professional Communication

• Problem Solving

• Attention to Detail

• Collaboration & Teamwork

What Success Looks Like

• Timely and accurate invoice processing and coding.

• Successful execution of department meetings, training sessions, and employee events.

• Continuous improvement of administrative workflows and processes.

• Effective support of HSE leadership and strategic initiatives.

• High-quality communications, presentations, and reporting deliverables.

• Strong partnerships across Finance, Tax, Operations, Communications, Government Affairs, and HSE teams.

About the Team

The HSE Administrative Services team supports Plains' commitment to safety, operational excellence, employee well-being, and regulatory compliance. Team members serve as trusted partners to HSE leadership and employees by providing the administrative foundation that enables the organization to operate effectively and efficiently.#plains

The selected candidate will be eligible for company benefits including Medical, Dental, Vision, Paid Time Off (PTO), and Free Parking.

• Cleared criminal history (background) and satisfactory reference checks
  • • • • Compliance with the Company’s drug and alcohol policy including pre-employment D&A testing
• This position is not eligible for employment-based visa sponsorship. Applicants must be authorized to work in the U.S. for the duration of their employment

At Plains, our employees are our most valuable asset. Hard work is rewarded with competitive compensation and a top-tier benefits program designed to keep our employees safe, healthy and happy. We work hard to deliver the best results to our stakeholders, and we also respect our employees' need for personal and family time, which is reflected in our benefits program.

We are proud to be an Equal Opportunity Employer. We are committed to providing employment opportunities to all qualified individuals, without regard to age, race, color, national or ethnic origin, religion, sex, sexual orientation, gender identity or expression, veteran status, genetic information, disability, or any other characteristic protected by federal, state, or local law. Applicants with disabilities can request accessible formats, communication supports, or other accessibility assistance by contacting WebCareers@Plains.com.

Salary details estimated by job boards such as Indeed, Glassdoor, and LinkedIn do not represent Plains’ compensation structure. We thank all candidates for their interest; however, only those selected for an interview will be contacted. 

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