Director, Cost Accounting

Dyne Therapeutics•Waltham, MA

4d•Onsite

About The Position

Dyne Therapeutics is focused on delivering functional improvement for people living with genetically driven neuromuscular diseases. We are developing therapeutics that target muscle and the central nervous system (CNS) to address the root cause of disease. The company is advancing clinical programs for Duchenne muscular dystrophy (DMD) and myotonic dystrophy type 1 (DM1) as well as preclinical programs for facioscapulohumeral muscular dystrophy (FSHD), Pompe disease and multiple DMD mutations. At Dyne, we are on a mission to deliver functional improvement for individuals, families and communities. The Director, Inventory / Cost Accounting leads Dyne’s inventory and cost accounting strategy and established the financial infrastructure required to support commercial launch and continued portfolio growth. This role owns the development, implementation and governance of cost accounting processes, inventory valuation, and related controls across clinical and commercial products manufactured through third-party CMOs and CDMOs. The Director serves as the company’s subject matter expert for inventory and cost accounting, providing strategic guidance on product costs, capitalization, reserves, gross margin, and complex accounting judgments. This highly visible role influences business decisions by translating manufacturing and supply chain activity into clear financial insights and recommendations for senior leadership. The Director partners closely with Supply Chain, Technical Operations, Commercial Operations, FP&A, external manufacturing partners, and auditors to ensure accurate, scalable, and audit-ready processes. This role sets priorities, directs cross-functional initiatives, and develops the capabilities and resources needed to support Dyne’s transition from clinical development to a multi-product commercial organization.

Requirements

Bachelor's degree in Accounting, Finance, or related field; CPA required
10+ years of progressive cost accounting experience, including at least 3-5 years in a leadership/managerial capacity
Direct experience with cost accounting in a pharmaceutical, biotech, or life sciences manufacturing environment
Experience managing cost accounting for products manufactured through CMOs/CDMOs (outsourced manufacturing model)
Strong knowledge of U.S. GAAP as it relates to inventory, standard costing, and COGS
Experience with ERP systems (e.g., NetSuite) and cost accounting/inventory modules
Advanced Excel skills; experience building cost models
Experience supporting a commercial product launch and scaling cost accounting processes from a pre-commercial or early-commercial stage
Experience with SOX compliance and public company reporting requirements
Strong analytical and problem-solving skills; comfortable building processes from the ground up
Excellent cross-functional communication and ability to translate operational activity into financial impact
High attention to detail balanced with the ability to operate in ambiguity typical of an early-commercial company

Responsibilities

Develop, implement, and maintain cost models for commercial product(s) manufactured through third-party CMOs/CDMOs
Establish and maintain bill of materials (BOM) and routing cost structures in collaboration with Supply Chain and Technical Operations
Perform periodic cost updates and manufacturing/production variance analysis
Analyze and report on cost of goods sold (COGS)
Own inventory accounting for raw materials, work-in-process, clinical supply, and finished goods held at third-party locations
Direct the period-end inventory and accounting close, ensuring accurate reporting, appropriate review, and timely resolution of issues
Manage inventory reserve methodology and perform periodic assessments
Manage physical inventory counts and cycle count programs across CMOs, CDMOs, and third-party logistics (3PL) providers
Determine and document appropriate accounting treatment for inventory used across clinical and commercial operations
Serve as the finance leader for cost-related aspects of CMO/CDMO relationships, including invoice review, cost true-ups, and technical transfer cost accounting
Partner with Supply Chain, Technical Operations, Commercial Operations, and FP&A to incorporate cost insights into operating plans, forecasts, launch decisions, and gross margin strategy.
Support cost impact analysis for manufacturing process changes, scale-up activities, and technology transfers
Establish and maintain a scalable control environment for inventory and cost accounting that complies with U.S. GAAP, SOX requirements, and public company standards
Prepare monthly, quarterly, and annual cost accounting analyses and reporting packages for FP&A and senior leadership
Design and maintain internal controls over inventory and cost accounting processes
Partner with the Corporate Controller on technical accounting memos related to inventory capitalization, cost absorption, and related judgments
Act as a key finance partner to Supply Chain, Technical Operations, and Commercial Operations teams
Build scalable cost accounting processes, systems, and reporting tools appropriate for a growing commercial-stage company
Support ERP system configuration and enhancements related to cost accounting and inventory modules
Provide cost-related input to gross-to-net, gross margin analysis, and product profitability reporting