Sr. Cost Accountant

Position Summary

We are seeking a proactive, detail-oriented Senior Cost Accountant to join our dynamic team at our Greenfield, MA manufacturing facility. In this role you will play a critical part in driving plant performance through accurate product costing, inventory management, and insightful operational analysis. You'll collaborate closely with operations, supply chain, and finance teams to support strategic decision‑making, improve cost structures, and increase overall efficiency.

• Lead standard cost development and maintenance for the plant, partnering with Operations to ensure accuracy of bills of material (BOMs), routings, and machine/labor rates.
• Support month‑end close activities related to inventory and manufacturing costs, including journal entries, job order reviews, and reconciliation of cost variances.
• Deliver meaningful cost and operational analysis to identify cost drivers, enhance margins, and support data‑driven decision‑making.
• Lead budget and forecast cycles
  , providing detailed insights into manufacturing costs, volume trends, and resource utilization.
• Prepare and distribute monthly reporting packages
  , highlighting key performance indicators (KPIs), variance explanations, and cost efficiency metrics for use in plant leadership reviews.
• Ensure inventory integrity and valuation accuracy
  , partnering with Plant Leadership to review inventory reserves and ensure compliance with company procedures.
• Support cost reduction
  , performing ROI and cost‑benefit analyses and tracking progress against savings goals.
• Drive continuous improvement
  , highlighting processes we can automate, streamline, and simplify both for the Athens site and across the finance organization.
• Participate in broader accounting activities such as balance sheet reconciliations, intercompany transactions, and general ledger entries as part of the business unit finance team.

• Bachelor's degree in Accounting
  , Finance
  , or a related field.
• 2‑5 years of cost accounting experience in a manufacturing or industrial environment
  .
• Strong working knowledge of standard costing
  , job costing
  , and inventory valuation methods.
• Proven experience with ERP systems (Infor, SAP, Oracle, or similar).
• Advanced Excel proficiency (e.g.,
  XLOOKUP, SUMIFS, Pivot Tables
  , charts, and dashboards).
• Demonstrated ability to analyze complex data and translate it into actionable insights.
• Excellent communication and presentation skills, with the ability to explain financial concepts to non‑financial audiences.

• Experience supporting lean manufacturing, Six Sigma, or continuous improvement initiatives.
• Working knowledge of cost modeling, variance analysis, and performance benchmarking
  .
• Exposure to budgeting, forecasting, and capital expenditure planning.
• Ability to work autonomously without direct onsite supervision (as the direct manager may be at another location).

• Strong attention to detail and data accuracy.
• High sense of urgency and ability to meet tight deadlines in a fast‑paced environment.
• Collaborative mindset with the ability to work cross‑functionally across operations, supply chain, and finance.
• Commitment to personal safety leadership and support of a culture where safety is a core value in every decision.

• Medical, dental and vision insurance
• Consumer-Driven Health Plan (CDHP)
• Preferred Provider Organization (PPO)
• Exclusive Provider Organization (EPO)
• Company-paid basic life insurance and Additional voluntary life coverage
• Paid vacation and competitive personal time off
• 401(k) savings plan with company match
• Employee assistance programs – available 24/7 to you and your family
• Wellness and Work Life Support – career development and educational assistance

The annual salary range for this position is $80,8000.00 – $.

Mativ and its subsidiaries are Equal Opportunity Employers. Qualified applicants will be considered without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.