Petro Diamond

Position: Human Resources Generalist - Entry Level

Updated: June 2026

IMPORTANT: ONLY FULLY BILINGUAL ENGLISH AND JAPANESE APPLICANTS WILL BE CONSIDERED.

Petro-Diamond Incorporated - a subsidiary of Mitsubishi Corporation in Japan - is a leading company in the trade, marketing and distribution of clean petroleum transportation fuels in Southern California.

Description:

This a newly created hands-on and entry level role responsible for assisting and supporting the day-to-day operation of the department as well as the execution of special projects. The role required a team player responsible for implementing and executing various HR-related programs/initiatives across the company. The position will also support the office administration of both the corporate office and the terminal facility, while serving as liaison with Mitsubishi Corporation – Japan, concerning the execution of logistics and administrative affairs.

Responsibilities:

Human Resources & Office Administration:

• Support the recruitment function by screening resumes, contacting eligible candidates and scheduling interviews with the hiring team.
• Coordinating the new hire orientation by compiling the new hire paperwork and execution of background checks prior to employment
• Responsible for employee’s record/document management ensuring accuracy and compliance with federal and state labor legislation
• Provide assistance in the execution of HR policies and procedures
• Responsible for coordinating all engagements initiatives and company events; including vendors research and budget/costs
• Responsible for new hire benefits enrollment process, qualified changes and terminations
• Maintaining records of incidents, injuries for worker’s compensation compliance
• Serve as backup for payroll processing
• Responsible for updating the organization chart and contact list, as needed
• First point of contact for calls and in-person inquiries from vendors and general public
• Attend/receive deliveries for the corporate office
• Receive, open, sort and deliver all incoming daily mail
• Process requests for business cards
• Keep inventory of supplies for PDI and PDTC and provide monthly purchase orders for processing to the HR Manager
• Provide support in coordinating the logistics for the corporate office document control, organization and storage
• Support with all building maintenance needs as they present

Corporate Planning & Governance Support (Headquarter – Japan):

• Provide support in all logistics matters when coordinating the quarterly Board of Directors.

• Collecting attendees’ availability
• Consolidating presentation materials

• Arranging meeting venues and dinners
• Shareholder and visitor coordination
• Travel arrangements and hotel reservations
• Provide support for periodic shareholder reporting
• Coordinating with Mitsubishi Corporation in Japan the approval of credit renewals
• Other recurring compliance – related submissions

Qualification Requirements:

• Bachelor’s degree is required, preferably in Human Resources or Accounting
• Fully bilingual English and Japanese
• Experience in the petroleum distribution industry is highly preferred
• Experience working with C-level upper management
• Able to work in an extremely high fast-paced environment
• 2 – 3 years of experience working with HRIS as well as ATS
• Extremely detailed oriented
• Excellent organization and presentation skills
• Fast and accurate data processing and analysis
• Able to superbly manage cut-off tasks and dates
• Extremely responsive (flexible) to business prioritization requests
• System savvy and follower of internal controls
• Superb ability to handle confidential information with professionalism and integrity
• Excellent email etiquette and communication skills both verbal and written
• Extremely proactive attitude
• Must be able to lift 35 pounds as needed