Hybrid Office Administrator — Billing & Projects (Part-Time)

Talley LLP; Irvine (CA); Hybrid; USD 27,552 - 41,328; Part time

Benefits offered by this job

Paid Time Off (PTO)

Medical benefits eligibility

401(k) eligibility

Job summary

A well-established consulting firm in Irvine, CA, is seeking an Office Administrator to manage office operations and financial processes. The role requires 3–5 years of experience in a professional services environment, expertise in QuickBooks, and the ability to work under pressure. Responsibilities include project-based invoicing and coordination of administrative tasks. This part-time position offers flexible hours and the opportunity to contribute significantly to a dynamic team.

Qualifications

• 3–5+ years of experience in an Office Administrator, Office Manager, or similar role.
• Experience in project-based, professional services environments.
• Ability to work independently in a hybrid/low-occupancy office environment.

Responsibilities

• Manage project-based invoicing across 100+ active projects.
• Coordinate internal processes and administrative workflows.
• Assist with employee benefits administration and onboarding new employees.

Skills

QuickBooks

Project-based billing/invoicing

Detail-oriented

Strong written and verbal communication skills

Tools

BillQuick

Bluebeam

Job description

A well-established consulting firm in Irvine, CA, is seeking an Office Administrator to manage office operations and financial processes. The role requires 3–5 years of experience in a professional services environment, expertise in QuickBooks, and the ability to work under pressure. Responsibilities include project-based invoicing and coordination of administrative tasks. This part-time position offers flexible hours and the opportunity to contribute significantly to a dynamic team.