Office & Accounting Coordinator

Atlas Mountain Construction; Doylestown (Bucks County); On-site; USD 55,000 - 85,000; Full time

Job summary

Atlas Mountain Construction in Doylestown seeks an experienced Office & Accounting Coordinator to manage daily financial and administrative operations. This hands-on role focuses on Sage 100 Contractor, bookkeeping, payroll, HR administration, and general office tasks.

The ideal candidate will maintain accurate books, track project financials, handle payroll, and keep accounting and administration organized while working directly with ownership, project managers, employees, subcontractors,

Qualifications

• Proven experience with Sage 100 Contractor in a construction environment.
• Strong bookkeeping, payroll, A/P/A/R, and job costing skills.
• Experience with ADP payroll and timekeeping.
• Ability to manage multiple projects and deadlines with confidentiality.
• Proficiency in Excel and general office software.

Responsibilities

• Advanced daily use of Sage 100 Contractor.
• Maintain accurate books and accounting records.
• Bookkeeping and general ledger maintenance.
• Manage accounts payable and accounts receivable.
• Prepare and process invoices, progress billings, and pay apps.
• Enter vendor and subcontractor invoices.
• Maintain job costing and cost codes.
• Track project budgets, expenses, and profitability.
• Reconcile bank accounts and journal entries.
• Prepare financial reports for management.

Skills

Sage 100 Contractor

Bookkeeping

Payroll processing

HR administration

Financial reporting

Excel

Attention to detail

Communication skills

Education

Accounting/Finance/Business degree

Tools

Sage 100 Contractor

ADP Payroll

Excel

Microsoft Office

Job description

Atlas Mountain Construction is seeking an experienced Office & Accounting Coordinator to manage the daily financial and administrative operations of our Doylestown office.

This is a hands‑on position with significant responsibility for Sage 100 Contractor, bookkeeping, billing, accounts payable and receivable, job costing, ADP payroll, employee records, HR administration, and general office operations.

We are specifically looking for someone who is highly experienced with Sage 100 Contractor and understands accounting within a construction company. The ideal candidate should be comfortable maintaining accurate company books, tracking project financials, processing payroll, managing employee documentation, and keeping both the accounting and administrative sides of the company organized.

This is not a traditional receptionist position. This person will work directly with ownership, project managers, employees, subcontractors, vendors, and our outside accounting professionals.

Responsibilities include:

• Advanced daily use of Sage 100 Contractor
• Maintain accurate company books and accounting records
• Perform bookkeeping and general ledger maintenance
• Manage accounts payable and accounts receivable
• Prepare and process customer invoices, progress billings, and pay applications
• Enter and process vendor and subcontractor invoices
• Maintain accurate construction job costing and cost codes
• Track project budgets, expenses, commitments, and profitability
• Track contracts, purchase orders, change orders, retainage, and stored materials
• Perform bank and account reconciliations
• Process and maintain journal entries
• Prepare financial and accounting reports for management
• Maintain organized records and documentation for year‑end accounting and outside accountants
• Administer ADP payroll and timekeeping
• Review employee hours and payroll information for accuracy
• Maintain employee payroll, compensation, and employment records
• Coordinate employee onboarding and offboarding
• Maintain employee files and required HR documentation
• Assist with benefits, PTO, company policies, and general HR administration
• Maintain subcontractor and vendor records, including W-9s, certificates of insurance, and other required documentation
• Track lien waivers and project billing documentation
• Maintain organized digital and physical company records
• Assist with phones, emails, scheduling, correspondence, and general office operations
• Work directly with project managers and leadership to keep project accounting, billing, and documentation current

Qualifications:

• Strong Sage 100 Contractor experience is highly preferred
• Strong bookkeeping and construction accounting experience
• Experience with ADP payroll and timekeeping
• Experience with accounts payable, accounts receivable, general ledger, reconciliations, billing, and job costing
• Understanding of construction progress billing, pay applications, retainage, and change orders
• Experience with payroll and HR administration
• Proficiency with Microsoft Excel, Outlook, Word, and general office software
• Excellent organizational skills and attention to detail
• Ability to handle confidential financial and employee information professionally
• Ability to manage multiple projects, deadlines, employees, vendors, and accounting responsibilities simultaneously
• Strong written and verbal communication skills
• Ability to work independently and take ownership of responsibilities
• Construction industry experience strongly preferred
• Accounting, finance, business administration, HR, or related education is beneficial, but strong hands‑on experience is equally valued