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Payroll Specialist

Company:
TerraPower LLC.
Location:
Bellevue, WA, 98009
Posted:
April 26, 2026
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Description:

TerraPower is a nuclear technology company based in Bellevue, Washington. At its core, the company is working to raise living standards globally through a more affordable, secure, and environmentally friendly form of nuclear energy along with innovations in medical isotopes to improve human health. In 2006, TerraPower originated with Bill Gates and a group of like-minded visionaries who evaluated the fundamental challenges to raising living standards around the world. They recognized energy access was crucial to the health and economic well-being of communities and decided that the private sector needed to take action and create energy sources that would advance global energy deployment. TerraPower's mission is to be a world leader in new nuclear technologies, while developing innovators and future leaders in the nuclear field. As a result, the company's activities in the fields of nuclear energy and related sciences are yielding significant innovations in the safety and economics of nuclear power, hybrid energy and medical applications - all for significant human health benefits."

TerraPower is seeking to hire highly motivated and forward-thinking professionals who are interested in focusing on advanced nuclear reactor research and development and influencing change within the nuclear power landscape and bringing forward the critical production of medical isotopes. TerraPower is an Equal Opportunity Employer. We do not discriminate in hiring on the basis of sex, gender identity, sexual orientation, race, color, religious creed, national origin, physical or mental disability, protected Veteran status, or any other characteristic protected by federal, state, or local law.

Payroll Specialist

Responsibilities

Support payroll administrations across multiple business segments compliance for remote workforce across multiple states outside of Washington State

Process international payroll /benefits in UK

Timely and accurately process multi-state payroll withholding, remittance of payroll taxes including federal, state, local taxes, any amendments as needed.

Understand proper taxation for employer paid benefits for multi-state payrolls

Track multi-state payroll/benefits compliance year-round (i.e. PTO, overtime), provide employee communications, help with completing year-end compliance requirements.

Review and incorporate any multi-state payroll/benefits required disclosures in the annual open enrollment materials, benefits summary, certification and contracts or accuracy, and distribute required documents for compliance

Prepare bi-weekly multi-state payroll and benefits reconciliation, quarterly W-2 review, conduct internal benefits audit to ensure data integrity

Calculate tax gross up related to relocation Calculate workers compensation and quarterly Washington State L&I owed

Assists with internal and external audits. i.e. workers compensation, insurance audit, L&I, DOL, 401K, GAAP financial and other compliance audits

Support benefits and leave administration experience including health, disability, life, and 401(k) as well as ancillary benefits

Assist annual open enrollment, new hire enrollments, qualifying life events/benefit changes

Partnering with benefits broker to support insurance claims and general troubleshooting

Support leave eligibility and calculations, partnering with our vendors, insurance carriers and benefit broker to resolve issues such as billing and claims

Perform payroll/benefits reconciliation per internal procedure and identify and resolve payroll issues timely

Assist On-boarding new employees including leading new hire orientation, explanation of benefits, policies and systems, prepare new hire packets and post on-boarding orientation follow up

Assist Off board terminating employees in ADP, complete HR termination template request, submit the insurance carrier template and notify the COBRA vendor if needed

Adhere to compliance calendar deadlines

Submit Internal Communications and updating benefit notifications/materials to TP Web

Support HRIS integration with ADP. Routine cross check of HR information in HRIS with ADP employee of records.

Assist with employee questions/changes for direct deposit, tax withholding allowances, qualifying life events, benefit changes, etc.

Identify opportunities for process and systems improvements. Assist any ad hoc projects as needed

Key Qualifications and Skills

At a minimum, four year BA/BS degree in Accounting, Finance, or General Business

A minimum of seven years of payroll administration experience including health, disability, life, and 401(k) as well as ancillary benefits

Experienced with processing multi-state payroll

Customer service oriented in high growth, high touch organization

Accuracy, time management, and timely follow-up

Proficient with Microsoft Office suite tools and able to quickly adapt to other Finance and Accounting systems (Oracle Fusion, ADP)

Working knowledge of payroll systems, experience with ADP preferred

Highly organized and detail-oriented; high degree of accuracy

Experience completing payroll journal entries, month end payroll reconciliation and an understanding of accounting principles

Ability to multi-task. Handle payroll processing, benefits projects and ad hoc requests timely and accurately

Capable of quickly comprehending new information and technologies

Capable of working in a fast-paced environment

Strong communication skills, comfortable working with operations team/non-accounting professionals

Ability to keep payroll and Human Resource information confidential

The successful candidate will possess a high degree of trust and integrity, communicate openly and display respect with a desire to foster teamwork.

TerraPower's technology is controlled for export by various agencies of the U.S. Government. TerraPower must evaluate applicants who are foreign nationals (other than asylees, refugees, or lawful permanent residents) in accordance with U.S. Government export control requirements. To facilitate TerraPower's export control reviews, you will be asked as part of the application process to identify whether you are a U.S. Citizen or national, asylee, refugee, or lawful permanent resident of the United States. Government export authorization approval times vary. Based on the business needs for a particular position, TerraPower may not consider a foreign national from a country if it is impracticable to obtain timely Government export approval.

Job Functions:

Job Functions are physical actions and/or working conditions associated with the position. These functions may also constitute essential functions for the job which the employee must be able to fulfill, with or without accommodation. Information provided below is to help describe the job so that the applicant has a reasonable understanding of the job duties/expectations. An applicant's ability to perform and/or tolerate these actions and conditions will be discussed and workplace accommodations may be made on a case-by-case basis following an individualized assessment of the applicant and other considerations, including but not limited to any governing safety standards.

Motor Abilities: Sitting for extended periods, bending/stooping, grasping/gripping, fine motor control (hands)

Physical exertion and/or requirements: Minimal, with ability to safely lift up to 25 pounds.

Repetitive work: Prolonged

Special Senses: Visual and audio focused work

Work Conditions: Stairs, typing/keyboard, standard and/or sitting working environment of >8 hours/day

Travel required 0-10%

TerraPower's technology is controlled for export by various agencies of the U.S. Government. TerraPower must evaluate applicants who are foreign nationals (other than asylees, refugees, or lawful permanent residents) in accordance with U.S. Government export control requirements. To facilitate TerraPower's export control reviews, you will be asked as part of the application process to identify whether you are a U.S. Citizen or national, asylee, refugee, or lawful permanent resident of the United States. Government export authorization approval times vary. Based on the business needs for a particular position, TerraPower may not consider a foreign national from a country if it is impracticable to obtain timely Government export approval.

Job details

Salary Range Level 8: $87,686 - $131,529

Salary Range Level 9: $102,804 - $154,206

* We typically place offers in the lower to middle portion of the range to maintain internal equity and allow room for growth. Any salary offered within the posted salary band is based on market data and commensurate with the selected individual's qualifications experience. This range is specific to Washington State.

Benefits:

Competitive Compensation

Salary, eligible to participate in discretionary short-term incentive payments

Comprehensive Medical and Wellness Benefits

Medical

Vision

Dental

Life and Disability

Gender Affirmation Benefits

Parental Leave

401k Plan

Generous Paid Time Off (PTO)

21 days of annually accrued PTO

Generous Holiday Schedule

10 paid holidays

Relocation Assistance

Professional and Educational Support Opportunities

TerraPower Career and Benefits information:

This range is specific (input wording here)

Pay Transparency

$87,686-$154,206 USD

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