Full-Time

Controller

Finance, Biologics CDMO

Posted on 9/15/2025

Celgard

Celgard

201-500 employees

High-performance membranes for energy storage

Compensation Overview

$160k - $180k/yr

Fremont, CA, USA

Hybrid

Flexible arrangement allows for remote work a few days each week.

Category
Accounting (2)
,
Required Skills
NetSuite
SAP Products
Requirements
  • Bachelor’s degree in accounting, finance, or related field; CPA strongly preferred.
  • 10+ years of progressive accounting/finance experience, with at least 5 years in biotech, pharma, or CDMO preferred.
  • Deep knowledge of US GAAP, revenue recognition, and cost accounting principles.
  • Hands-on experience with milestone accounting, project-based financials, and contract review.
  • ERP systems experience (QAD, SAP, NetSuite, or equivalent).
  • Strong analytical, problem-solving, and communication skills with the ability to present to executives and external stakeholders.
  • Proven ability to thrive in a high-growth, fast-paced environment.
Responsibilities
  • Lead monthly, quarterly, and year-end close processes, ensuring accuracy, timeliness, and compliance with US GAAP.
  • Oversee preparation of financial statements, variance analysis, and reporting packages for senior leadership and Executives.
  • Ensure compliance with regulatory and audit requirements.
  • Manage revenue recognition for CDMO contracts, including milestone payments, progress billing, and long-term manufacturing/service agreements.
  • Partner with BD and Program Management teams to review client contracts, ensuring financial terms are accurately captured and reported.
  • Monitor deferred revenue, WIP (work-in-progress), and ensure accurate reporting of client-related costs.
  • Oversee cost accounting for GMP and non-GMP operations, including material consumption, batch costing, and variance analysis.
  • Work closely with Manufacturing, Supply Chain, and Program Management to track project margins and provide insights into profitability.
  • Lead budgeting and forecasting processes, aligning financial plans with business goals.
  • Establish and maintain strong internal controls, policies, and procedures across accounting and finance functions.
  • Oversee payroll, accounts payable/receivable, fixed assets, and treasury management.
  • Drive system enhancements (ERP/QAD or equivalent) to streamline reporting, PO tracking, and integration with project management tools.
  • Manage and mentor the accounting team, fostering a culture of accuracy, accountability, and continuous improvement.
  • Collaborate cross-functionally with BD, PM, HR, SC, IT, and Operations to ensure financial clarity and alignment.
  • Collaborate with the parent company’s accounting team to fulfill reporting requirements and provide requested financial information.
  • Coordinate with external accounting firms to manage annual financial statement and tax audits, ensuring timely preparation, accuracy, and compliance with all regulatory requirements.
  • Work closely with CFO to oversee daily financial operations and ensure accurate reporting, while also partnering on long-term financial planning, budgeting, and strategic initiatives to support the company’s growth and objectives.
Desired Qualifications
  • Experience in pharmaceutical or biotech industries is a plus.
  • Proficiency with Excel, especially large data sets (Pivot tables, V-lookups, Index-match) is preferred.

Celgard makes and sells high-performance membrane materials and thin separators used inside batteries, as well as fabrics for outdoor apparel and medical PPE. The membranes sit between battery electrodes to prevent contact while allowing ions to pass, enabling safe and efficient operation in lithium-ion and other chemistries. The company stands out through its Asahi Kasei Group affiliation and strategic alliances (such as with Æsir Technologies) to pursue new battery chemistries, while expanding manufacturing capacity. Its goal is to provide reliable membranes and protective fabrics at scale to support safer, longer-lasting energy storage and protective textiles, and to drive industry growth through collaborations.

Company Size

201-500

Company Stage

N/A

Total Funding

N/A

Headquarters

Charlotte, North Carolina

Founded

N/A

Simplify Jobs

Simplify's Take

What believers are saying

  • Charlotte plant expansion adds 100 jobs, boosts LIB separator capacity for EVs.
  • Asahi Kasei invests in Hipore wet-process coating lines at Charlotte site.
  • Proven separators serve CATL, Panasonic in high-performance EV, ESS applications.

What critics are saying

  • CATL's in-house separators capture 39% EV market, cut Celgard revenue 10-15% by 2027.
  • SK Innovation, Toray wet-process tech displaces dry-process, erodes share in 12 months.
  • Solid-state batteries from Toyota, QuantumScape eliminate separators by 2028.

What makes Celgard unique

  • Celgard specializes in solvent-free dry-process microporous membranes for lithium-ion batteries.
  • Global facilities in USA, China anchor manufacturing for EV battery separators.
  • Strategic alliances with Æsir, Lithion, C4V target Ni-Zn, LFP, BM-LMP batteries.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Life Insurance

Disability Insurance

401(k) Company Match

Paid Vacation

Paid Sick Leave

Paid Holidays

Company News

Yahoo Finance
Jan 29th, 2024
Celgard and Æsir Technologies Forge Strategic Alliance to Drive Industry Innovation in Nickel-Zinc, Zinc-Air and Lithium-Zinc Batteries

Together, Celgard and Æsir will collaborate on joint research projects to further develop high-technology next-generation Nickel-Zinc (Ni-Zn), Zinc-Air (Zn-Air), Lithium-Zinc (Li-Zn) and Sodium-Zinc (Na-Zn) batteries used primarily in aviation, data centers, telecom, energy infrastructure and electric vehicle (EV) charging applications.

Plant Services
Nov 30th, 2023
Celgard expands North Carolina manufacturing plant to support electric vehicle supply chain

Celgard, LLC has announced plans to expand its manufacturing facility in Charlotte, North Carolina, generating 100 new jobs in the process.

PR Newswire
Oct 31st, 2023
Celgard Charlotte Manufacturing Facility To Expand Battery Separator Capacity And Create New Jobs

Celgard to expand facilities, workforce and product portfolio to better serve the EV battery separator supply chain. Post thisThe Biden-Harris Administration and the U.S. Department of Energy (DOE) have identified the domestic U.S. battery market as a critical supply chain focus area for the nation. Investments in Celgard's Charlotte plant will allow the company to expand existing infrastructure to quickly meet demand of the lithium-ion battery (LIB) separator supply chain and domestic customers.Celgard manufactures dry-process membrane separator also used in vehicle electrification. The company already has a skilled employee base capable of applying technical coatings to base film shipped from Hipore™ sister locations and completing finishing steps required to meet customer specifications

Tamarindo
Jun 13th, 2023
Celgard & Lithion Battery form battery storage alliance | Tamarindo

US-headquartered Celgard, a subsidiary of Polypore International, has formed a strategic alliance with Lithion Battery, whereby the two companies will undertake joint development of battery separators for lithium-ion cells for energy storage systems and microgrids.

PR Newswire Asia
Jun 7th, 2023
Celgard Takes Another Step In Energy Storage Growth As It Forms Strategic Alliance With Lithion Battery For Next-Generation Battery Cells

CHARLOTTE, N.C., June 7, 2023 /PRNewswire/ -- Celgard, LLC (Celgard), a subsidiary of Polypore International, LP (Polypore), is pleased to announce a newly formed strategic alliance with Lithion Battery, Inc. (Lithion), whereby the two companies will undertake joint development of battery separators for next generation lithium-ion cells with Lithium Iron Phosphate (LFP) cathode material. Through this collaborative effort, the companies will meet the ever-growing demand of supplying consistent power to those in need with energy storage systems (ESS) for uses such as micro-grid power applications. The cells could also be deployed in medical tools and military and industrial markets, where Celgard has been providing separator solutions for decades.

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