Bookkeeper

Bookkeeper (Hybrid)

Sigma Resources is seeking a highly disciplined, detail-oriented, and process-driven Bookkeeper to manage accounts receivable and accounts payable functions across a portfolio of four companies operating in separate QuickBooks Online company files. This person will work within a structured review process where all work is reviewed and approved by the Senior Accountant before finalization.

This is a hybrid position with three days a week in office (SouthSide of Pittsburgh) and two days a week remote. Parking pass in a nearby lot will be provided.

What You Will Do

Accounts Receivable

• Create and send invoices in QBO based on approved billing summaries, including time-based billing for consulting engagements
• Apply customer payments to open invoices, research and resolve unapplied payments, and manage partial payment applications
• Maintain customer and sub-customer hierarchies in QBO to support project-level billing and reporting
• Monitor AR aging using QBO’s Aging Summary and Detail reports, flag overdue accounts, and coordinate follow-up
• Run Sales by Customer Detail and Unbilled Time and Expenses reports to identify missed or pending invoices

Accounts Payable

• Enter vendor bills and subcontractor invoices in QBO, ensuring proper coding to the chart of accounts
• Process bill payments through scheduled payment runs
• Reconcile subcontractor-billed hours against client-billed hours to identify discrepancies
• Manage vendor records and maintain current W-9 documentation

Multi-Company Operations

• Work across four separate QBO company files daily, maintaining strict entity separation in all transactions and record-keeping
• Adapt to each company’s chart of accounts and customer/vendor structure
• Ensure consistency in process execution across entities while respecting differences in billing models and payment terms

Bank Reconciliation and Reporting

• Review and categorize bank feed transactions in QBO
• Support monthly bank reconciliation under the direction of the Senior Accountant
• Generate standard QBO reports as needed, including Profit and Loss, Balance Sheet, AR and AP Aging, and transaction detail reports

Process Documentation

• Document AR and AP workflows, including exception handling procedures, as part of the company’s ongoing effort to standardize and improve financial processes across all entities
• Requirements
• Pittsburgh-based, with ability to work in a hybrid environment combining in-office and remote work
• Demonstrated proficiency in QuickBooks Online, specifically: navigating multiple company files, creating and managing invoices, applying payments, entering and paying bills, working with customer and sub-customer hierarchies, using bank feeds, and running standard financial reports
• Experience managing AR and AP across more than one business entity
• Comfort working within structured review and approval processes
• Ability to clearly document workflows and explain how and why transactions are handled

Other duties as assigned

What Background You Should Have

Requirements

• 3–5 years of bookkeeping experience
• Hybrid/in-office availability in the Pittsburgh area
• High Proficiency in QuickBooks Online (QBO) and Microsoft Excel
• Strong attention to detail and organizational skills
• Ability to manage multiple workflows and deadlines simultaneously
• Strong communication skills and ability to work independently on remote workdays

Benefits

• Comprehensive Healthcare, Dental and Vision Coverage
• Health Savings Account option
• 401(k) retirement plan with traditional and Roth options great match
• Short-term disability, life, accident, and critical illness plan options
• 15 days of PTO per year to start
• 8 paid holidays

Work Environment

This role is performed remotely and in office (hybrid) and includes heavy computer work that requires the ability to communicate clearly both verbally and in writing – including frequent talking, hearing, writing, typing, reading, and significant comprehension. The employee frequently is also required to sit, stand, walk, use hands, and reach with arms/hands.

About Sigma Resources

Sigma Resources is a technology services and consulting firm focused on delivering high-quality talent and solutions to clients across industries. The company is committed to operational excellence, continuous improvement, and leveraging technology to drive efficiency and growth.

Sigma Resources LLC is an EOE/Veterans/Minorities/Women/Disabled/Military Friendly Employer