Benefits Administrator & HR Data Auditor

Matrix Finance and Accounting; Mercer Island (WA); On-site; USD 65,000 - 90,000; Full time

Job summary

Matrix Finance and Accounting on Mercer Island, WA, seeks a Benefits Administrator to manage day-to-day employee benefits programs including medical, dental, vision, FSA/HSA, Section 125, and 401(k) plans. You will coordinate enrollments, answer questions, and ensure accurate data flows between HRIS, payroll, and carriers.

Responsibilities include managing workers' compensation files, auditing benefit data, and providing backup payroll support while delivering confidential HR support across the

Qualifications

• Two years of benefits administration experience including medical/dental/vision and at least one of FSA/HSA/Section 125 or 401(k) plans.
• Familiarity with ERISA, ACA, COBRA, HIPAA and benefit practices.
• Strong attention to detail and ability to manage high-volume enrollments.

Responsibilities

• Administer medical, dental, vision, FSA/HSA, Section 125 and 401(k) plans in line with documents and laws.
• Coordinate enrollments, life events, terminations, and eligibility with accuracy.
• Serve as primary benefits resource for questions and plan comparisons; escalate issues as needed.
• Maintain benefit records in HRIS and carrier portals; audit eligibility and deductions.
• Prepare benefits communications and notices; support retirement plan administration.

Skills

Benefits administration

ERISA/ACA knowledge

Attention to detail

HRIS proficiency

Excel

Carrier portals

Education

Bachelor's or Associate degree in HR or related field

Tools

HRIS

Microsoft Excel

Carrier portals

Job description

Matrix Finance and Accounting on Mercer Island, WA, seeks a Benefits Administrator to manage day-to-day employee benefits programs including medical, dental, vision, FSA/HSA, Section 125, and 401(k) plans. You will coordinate enrollments, answer questions, and ensure accurate data flows between HRIS, payroll, and carriers.

Responsibilities include managing workers' compensation files, auditing benefit data, and providing backup payroll support while delivering confidential HR support across the