Senior Office Manager: Bookkeeping, HR & Ops

Thayerconstructionllc; Corvallis (OR); On-site; USD 40,000 - 50,000; Full time

Benefits offered by this job

Competitive compensation

Profit-sharing bonus

Paid holidays, vacation, and sick time

Health, vision, dental, and life insu

401(k) with employer contributions

Continued training and professional

Full-time, year-round work

A strong team and professional culture

Job summary

Thayer Design Build is seeking an experienced, in-person Office Manager to own bookkeeping, HR administration, and a broad range of office duties in Corvallis, Oregon. This is not an entry-level role and is fully in-office. You will manage finances and HR with minimal supervision.

You’ll handle QuickBooks, accounts payable/receivable, job costing, and WIP reporting, and coordinate with CPAs and benefits providers. A proactive, detail‑oriented self-starter with strong ownership is essential.

Qualifications

• Proven bookkeeping experience managing a business's financial records.
• Experience handling HR administration and compliance.
• Strong attention to detail and ownership mindset.

Responsibilities

• Own bookkeeping including QuickBooks, AP/AR, reconciliations and financial reporting.
• Maintain project job costing and WIP reporting; ensure accurate cost allocation.
• Coordinate with CPA, payroll provider, and other financial partners; support month-end/year-end close.

Skills

Bookkeeping

HR administration

Attention to detail

Ownership/self-starter

Compliance

Tools

QuickBooks

Job description

Thayer Design Build is seeking an experienced, in-person Office Manager to own bookkeeping, HR administration, and a broad range of office duties in Corvallis, Oregon. This is not an entry-level role and is fully in-office. You will manage finances and HR with minimal supervision.

You’ll handle QuickBooks, accounts payable/receivable, job costing, and WIP reporting, and coordinate with CPAs and benefits providers. A proactive, detail‑oriented self-starter with strong ownership is essential.