Tax- Senior Tax Accountant

Posted Wednesday, January 7, 2026 at 8:00 AM

POSITION TITLE:

Senior Tax Accountant

REPORTS TO:

Senior Tax Manager

LOCATION:

Corporate Headquarters, Los Angeles, CA

Diamond Generating Corporation is a wholly owned subsidiary of Mitsubishi Corporation, one of the world’s most diverse enterprises, with over 700 subsidiaries and affiliates worldwide. The company has developed a reputation for financial strength and long-term stability. Our expertise in power development and generation, including greenfield development, acquisition, fuel procurement, financing, construction and operations management, has resulted in a portfolio of efficient, state-of-the-art, environmentally sound generating facilities.

As part of the corporate tax group, the senior tax accountant is responsible for supporting the preparation and review of partnership and corporate tax returns, tax provisions, and various tax‑related ad‑hoc tasks.

• Review partnership and corporate tax returns (Federal and multi‑state)
• Prepare tax work papers and related supporting schedules
• Assist with quarterly estimates, extensions, withholding tax filing requirements, and payment processes
• Assist with the preparation of quarterly/year‑end tax provisions by preparing work papers and compiling supporting documentation
• Maintain fixed asset tax schedules for various projects
• Prepare general ledger entries and maintain supporting work papers
• Assist with various ad‑hoc projects and tasks

• Degree in accounting or business
• Experience in partnership and/or corporate tax
• CPA or MBT preferred
• Minimum three years of relevant public accounting experience
• Knowledge of Microsoft Office Suite, strong knowledge of Excel, and Thomson Reuters Fixed Assets CS (preferred)

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

• While performing the duties of this job, the employee is regularly required to stand, sit, talk, hear, and use hands and fingers to operate a computer and telephone keyboard.
• Specific vision abilities required by this job include close vision due to computer work.
• Regular, predictable attendance is required.

The work environment characteristics described here are representative of those an employee encounters while performing the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

• Moderate noise (e.g., business office with computers, phone, and printers, light traffic).
• Ability to work in an open office environment.
• Ability to sit at a computer for an extended period of time.