Full-Time

Sr. Software Reliability Engineer

Posted on 9/15/2025

Celgard

Celgard

201-500 employees

High-performance membranes for energy storage

No salary listed

Charlotte, NC, USA

Hybrid

Hybrid role requiring 2 days on-site weekly; travel up to 4 times per year (domestic or international).

Category
DevOps & Infrastructure (7)
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Requirements
  • Minimum of 6 years’ experience supporting Business Applications required
  • Strong Knowledge of a Project Management Tool (MS Project, Jira, Smartsheet…) required
  • Knowledge on NoSQL type of Database System like MongoDB, Cassandra is plus
  • Strong IT general culture, understanding of IT Software & Systems architectures
  • Strong Knowledge of Microsoft Ecosystem (Windows Server, SQL Server, IIS…)
  • Strong Knowledge of SQL Language and relational database fundamentals
  • Strong Knowledge of a scripting language (PowerShell preferred)
  • Strong knowledge of a cloud platform like Azure or AWS required (evidence of related certification preferred)
  • Knowledge of web-related technologies
  • Strong Knowledge of a DevOps toolkit (Azure DevOps Server is preferred)
  • Strong Knowledge on Linux (Ubuntu preferred)
  • Strong knowledge of PostgreSQL, MariaDB or MySQL is plus
  • Knowledge of Python is plus
  • Knowledge of Ansible is plus
  • Strong Knowledge of a monitoring & supervision platform (Zabbix is preferred) and of monitoring practices
  • Knowledge of ERP Microsoft Dynamics (Dynamics 365, Dynamics Business Central) is a plus
  • Experience with ServiceNow Enterprise Service Management (ESM) is a plus
  • Education /Experience: Minimum requirement: 2-years degree or equivalent combination of education and experience is required. Degree in information services, computer science, or related.
  • Minimum of 3 years’ experience closely related to SRE.
  • PMP or similar type of project related certification is a plus.
Responsibilities
  • Application availability and Performance
  • Technical issues handling for managed applications, response to incidents
  • Supporting incident escalation and troubleshooting, provide technical support when needed
  • Evaluating incidents after resolution, Root cause analysis & communication (Post incident report, active Problem Management)
  • Continuous monitoring of applications (via Zabbix), automate incident responses
  • Operating System Administration
  • Development and management of solutions to increase reliability and control (monitoring using Zabbix, supervision using Grafana and SquaredUp, automation using Azure DevOps pipelines…)
  • Technical & Basic Functional knowledge of managed applications
  • Lead Knowledge sharing practices across the team and with other teams (ServiceDesk for example)
  • Joint work with Developers when needed to improve reliability of Applications
  • Adhere to company procedures, define, and regularly improve team procedures
  • Participate in the on-call rotation for the IT group
  • Train and Assist Junior SRE and SRE
  • Code Push execution & optimization
  • Execute safe code promotion through our non-production and production environments respecting the business constraints
  • Use DevOps toolkit to execute and optimize code pushes (Azure DevOps pipelines)
  • Able to design reliable and Pipelines and to implement them
  • Includes in house implemented applications (ERP, MES) or vendor applications
  • Joint work with Developers, DBA, Support Teams, and Infrastructure Teams
  • Technical Project Management & Execution
  • Lead various IT implementation projects as Technical Project Lead
  • Tasks definition and assignment
  • Accountable for project success
  • Coordination of related activities between teams
  • Act as technical analyst on various Business/IT Project initiatives
  • Manage time effectively to ensure that tasks and projects are delivered on schedule
  • Coordinate project tasks and goals efficiently with SRE Team manager and related project stake holders
  • Report progress, communicate proactively and efficiently
  • Technical Requests handling
  • Managed applications related requests as non-production environments refreshes
  • Servers/Platforms upgrades, infrastructure led required changes
  • Technical Administration Activities
  • Security Audits
  • R&D or Continuous Improvement Projects
  • Focus on Continuous Improvement, be force of proposal of improvements
  • Standardization Practices
  • Automation (through DevOps toolkit for example)
  • Follow technologies trends to propose improvements
  • Help streamline practices globally
Desired Qualifications
  • Excellent verbal and written communication skills.
  • Successful completion of Fundamentals of Engineering exam.
  • Master of Science Degree in Civil Engineering with a focus on Structural Engineering.
  • Experience with related software such as AutoCAD, Mathcad, and commercially available structural analysis software (STADD Pro, SAP2000, Ansys, etc.).

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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