Finance Administrator

About Onyx Corporation

Onyx Corporation is a family-owned construction company based in Acton, Massachusetts, specializing in heavy civil construction, excavation, landscape construction, and construction materials. With a commitment to quality workmanship, safety, and customer satisfaction, Onyx takes pride in delivering projects that make a lasting impact on the communities it serves.

Through its Excavation, Landscape Construction, and Materials divisions, Onyx provides a wide range of services and expertise to support projects throughout the region. Our team combines industry knowledge, skilled employees, modern equipment, and a hands-on approach to get the job done safely and efficiently.

As a family-owned company, Onyx values its people and recognizes that our employees are the foundation of our success. We strive to foster a collaborative, team-oriented work environment where employees are respected, supported, and given opportunities to grow and develop their careers.

At Onyx, we believe in working together, taking pride in what we do, and building a company where people want to work and grow.

Job Summary:

Entry-Level Role: The Finance Administrator is responsible for supporting and processing accounts payable and billing functions for a construction company. This role is designed to accommodate both junior-level candidates and those with prior experience, with responsibilities increasing as skills and knowledge develop. The position supports accurate job cost accounting, timely vendor and subcontractor payments, and compliance with construction industry requirements.

Duties/Responsibilities:

• Enter and process vendor and subcontractor invoices accurately and in a timely manner
• Match invoices to purchase orders, contracts, and receiving documentation
• Route invoices for approval from project managers and supervisors
• Prepare and assist with weekly or bi-weekly check runs
• Maintain organized digital and physical accounts payable records
• Assist with preparing lien waivers, collecting and maintaining Certificates of Insurance, W-9s, Credit Applications and setting up new vendors
• Set up one-time jobs within Heavy Job and Sage
• Provide support for Sage billing, accounts receivable, contracts, and project management functions.
• Respond to vendor and subcontractor inquiries regarding invoice and payment status
• Reconcile vendor statements and resolve discrepancies with supervision as needed
• Assist with 1099 preparation and year-end reporting
• Support month-end close activities and audits
• Follow company accounting procedures and internal controls
• Answer and route incoming phone calls in a professional and courteous manner
• Other duties as assigned

Required Skills/Abilities:

• Strong attention to detail and accuracy
• Effective time management and organizational skills
• Clear written and verbal communication
• Ability to follow established procedures while learning new responsibilities
• Team-oriented with the ability to work independently as skills develop

Education and Experience:

• High school diploma or equivalent required
• Associate degree or coursework in accounting or finance preferred, or equivalent work experience.
• 1-2 years of accounts payable experience; construction industry experience preferred but not required
• Basic understanding of accounting principles and willingness to learn job cost accounting
• Familiarity with accounting or construction-related software is a plus.
• Proficient in Microsoft Excel and basic office applications

Work Environment & Growth

• Office-based position working closely with accounting staff and project managers
• Training and mentoring provided
• Opportunity for career growth into a senior Accounts Payable or construction accounting role

Why Join Onyx?

At Onyx Corporation, we believe our people are our greatest asset. We offer the opportunity to be part of a team that values hard work, collaboration, safety, and professional growth. Whether you're building your career or bringing years of industry experience, you'll have the opportunity to make a meaningful contribution and be part of something bigger.

Equal Employment Opportunity

Onyx Corporation is an Equal Opportunity Employer. We are committed to providing equal employment opportunities to all employees and applicants and do not discriminate based on any legally protected status or characteristic.

Join the Onyx Team!

If you're looking for an opportunity to grow your skills, take pride in your work, and contribute to a team that gets the job done, we'd like to hear from you.