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Open nowFirst seen 8 days ago

Environmental Manager

Castelion108 open roles

Where
Torrance, California, United States
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Your applicationOpen nowEnvironmental ManagerCastelion · Torrance, California, United States

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The clock on this job

Early applications get read.

12.7% of postings close within 7 days. Measured by our own scanner across the market. Castelion postings stay open a median of 1 days.

Share of postings closed within
  1. 2.2%1 day
  2. 4.5%3 days
  3. 12.7%7 days
  4. 20.4%14 days
  5. 35.6%30 days
  6. 58.7%60 days
This job: first seen 8 days ago

Castelion median: 1 days open

The posting

Why Castelion, Why Now

Castelion is moving incredibly fast to develop and deliver advanced defense systems at a time when execution matters more than ever. We believe focus and technical excellence are decisive advantages - and we are building a team that can deliver real capability, not just concepts.

This is a rare opportunity to join at an early stage, where your work will directly shape critical systems, influence major technical decisions, and have immediate, real-world impact.

Environmental Manager

The Environmental Manager is responsible for building and leading Castelion's company-wide environmental function as part of the Environmental, Health & Safety (EHS) organization. Serving as the company's primary environmental subject matter expert, this role establishes the environmental strategy, develops company-wide policies, standards, and management systems, leads environmental permitting efforts, and provides technical guidance on environmental compliance across all operating locations.

Working closely with Site EHS Managers, Engineering, Manufacturing, Facilities, Test Operations, Supply Chain, and Program Management, this individual integrates environmental requirements into facility planning, process design, operational readiness, manufacturing, testing, and expansion projects. The Environmental Manager develops practical, risk-based environmental solutions that enable operational execution while meeting environmental obligations and building the environmental function to support Castelion's continued growth.

Responsibilities

Environmental Leadership

  • Lead and continuously improve Castelion's environmental function in support of company growth.
  • Establish environmental strategy, governance, and management systems aligned with business objectives.
  • Serve as the company's primary environmental subject matter expert, providing technical guidance to leadership and Site EHS Managers.
  • Develop environmental performance metrics and drive continuous improvement across all operating locations.
  • Build and mentor a scalable environmental organization as the company grows.

Permitting, Due Diligence & Regulatory Strategy

  • Develop permitting strategies that support new facilities, manufacturing operations, testing, and future expansion.
  • Lead environmental due diligence for new sites, acquisitions, leases, and development projects.
  • Manage environmental permits and regulatory approvals throughout their lifecycle.
  • Build productive relationships with environmental regulatory agencies and coordinate consultant support.
  • Monitor emerging regulatory requirements and advise leadership on business impacts.

Environmental Programs

  • Develop, implement, and oversee company-wide environmental programs, including:
  • Air quality compliance and permitting
  • Hazardous waste management, including characterization of complex and unique waste streams
  • Industrial stormwater (SWPPP), SPCC, wastewater, and EPCRA compliance
  • Environmental inspections, monitoring, and regulatory reporting
  • Environmental Management Systems (EMS) aligned with ISO 14001 principles

Operational Partnership

  • Partner with Engineering, Manufacturing, Facilities, and Operations to integrate environmental requirements into projects and production.
  • Support site selection, facility design, startup, commissioning, and operational readiness activities.
  • Evaluate environmental impacts associated with new processes, equipment, chemicals, and production changes.
  • Identify permitting and compliance requirements early to support efficient project execution.
  • Provide practical environmental solutions that enable innovation and operational success.

Environmental Risk & Continuous Improvement

  • Lead environmental audits, assessments, and regulatory inspections.
  • Investigate environmental incidents and drive corrective and preventive actions.
  • Assess environmental risks and recommend mitigation strategies for existing and future operations.
  • Promote lessons learned, pollution prevention, and environmental stewardship throughout the organization.

Basic Qualifications

  • Bachelor's degree in Environmental Engineering, Environmental Science, Chemical Engineering, Civil Engineering, or a related technical discipline.
  • 10+ years of progressive leadership and technical environmental experience supporting manufacturing, aerospace, defense, semiconductor, chemical processing, or other complex industrial operations.
  • Demonstrated experience developing and implementing Environmental Management Systems (EMS), including programs aligned with ISO 14001 principles.
  • Extensive knowledge of federal, state, and local environmental regulations governing industrial operations.
  • Demonstrated experience obtaining, maintaining, and managing environmental permits and regulatory compliance programs.
  • Experience supporting environmental due diligence for new facilities, property acquisitions, leases, or facility expansions.
  • Experience managing hazardous waste programs, including characterization and management of complex or unique hazardous waste streams.
  • Demonstrated ability to interpret environmental regulations and translate them into practical, risk-based operational solutions.
  • Excellent written and verbal communication skills, with the ability to communicate complex environmental and regulatory concepts to technical and non-technical audiences.
  • Highly organized with exceptional attention to detail and the ability to manage multiple priorities in a fast-paced environment.
  • Strong project management, critical thinking, and problem-solving skills.
  • Proven ability to build collaborative relationships, influence cross-functional teams, and drive environmental initiatives from concept through implementation.
  • Ability to thrive in a fast-paced, high-growth environment while balancing strategic priorities with day-to-day operational support.
  • Willingness to travel between company operating locations as needed.

Preferred Skills and Experience

  • Demonstrated experience developing and managing complex air quality permitting programs, including preparation, negotiation, modification, and ongoing compliance for major industrial operations.
  • Demonstrated experience permitting complex manufacturing or industrial operations under one or more of the following regulatory agencies: SCAQMD, TCEQ, and/or NMED
  • Experience supporting greenfield facility development, manufacturing startups, or major facility expansions from planning through operational readiness.
  • Experience supporting aerospace, defense, propulsion, energetics, or other high-consequence manufacturing environments.
  • Experience with emissions inventories, air dispersion modeling, and long-term air permitting strategy.
  • Professional certifications such as:
  • Certified Hazardous Materials Manager (CHMM)
  • Registered Environmental Manager (REM)
  • Qualified Environmental Professional (QEP)
  • Professional Engineer (PE)

Other Duties

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time with or without notice.

Benefits And Perks

All full-time employees are granted meaningful long-term equity, sharing in the company's significant growth trajectory. We offer four (4) weeks of paid time off, ten (10) company-paid holidays, and comprehensive health benefits - including 100% employee-covered medical and strong dependent coverage, along with dental and vision plans. We also provide paid parental leave to support growing families, a $100 monthly fitness stipend to promote health and performance, and onsite EV charging for convenience. In addition, employees enjoy perks like catered meals, company-covered food during high-demand periods, and a fully stocked kitchen to stay fueled throughout the day.

While this position does not currently require a U.S government-issued security clearance, it may in the near future. Therefore, the ability to obtain and maintain a U.S. government–issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

Affirmative Action/EEO Statement

Employment with Castelion is governed on the basis of competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.

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