Senior BESS Product Safety Engineer

The AES Corporation; Louisville (CO); On-site; USD 120,000 - 190,000; Full time

Job summary

The AES Corporation, a leading US-based energy company, seeks a Senior BESS Product Safety Engineer in the Louisville, CO area. This role focuses on safety architecture, NFPA and UL compliance, and engineering oversight across the design lifecycle.

Expect ~30% travel to support US projects and possible international assignments; preferred location is Louisville, CO, with openness to other US candidates. Strong leadership and cross‑functional collaboration are essential.

Qualifications

• Bachelor’s degree in Electrical, Mechanical, or Fire Protection Engineering or related field.
• 5–7 years of experience in mechanical design and fire protection for energy or safety-critical systems.
• Knowledge of BESS fire codes and UL 9540/9540A, NFPA 68/69, 72, 855, 110/111.
• Experience with permitting, testing, and regulatory approvals.
• Proficiency with CAD and safety modeling tools.

Responsibilities

• Interpret NFPA, IFC, UL, and IEC standards to guide BESS product development.
• Review and approve mechanical drawings, layouts, and CAD models.
• Own safety-critical BESS enclosure design and requirements across design lifecycle.
• Provide oversight of UL 9540/9540A testing, fire modeling, and code compliance.
• Develop fire code compliance matrices and AHJ permitting docs.
• Mentor engineers and train internal teams.
• Lead emergency response documentation for project submittals.
• Engage in standards bodies and industry committees on BESS codes.

Skills

Fire protection engineering

BESS safety

CAD software

Safety analysis

Education

Bachelor's degree in Electrical Engineering

Bachelor's degree in Mechanical Engineering

Bachelor's degree in Fire Protection Engineering

Tools

SolidWorks

AutoCAD

Job description

Are you ready to be part of a company that's not just talking about the future, but actively shaping it? Join The AES Corporation, the largest US-based global power company with a team of 8,300 employees across 12 countries.

AES has been ranked #1 by BloombergNEF in renewable energy sales to corporations in the US and Americas for five consecutive years, providing electricity for millions of people worldwide.

We are proud to foster a strong workplace culture, earning prominent positions in Great Place to Work rankings across the markets where we operate. AES was also named one of the World's Most Ethical Companies for the 13th consecutive year in 2026, highlighting our dedication to integrity, transparency, and responsible business practices.

Our spirit of innovation continues to earn industry recognition. AES is the only seven-time winner of the Edison Electric Institute’s Edison Awards in the twenty-first century, a distinction honoring global leadership in advancing the electric power industry.

If you're ready to be part of a company that's not just adapting to change, but driving it, AES is the place for you. We're not just building a more sustainable future, we're powering it.

Senior BESS Product Safety Engineer is a core technical authority for BESS safety architecture, ensuring systems are designed, tested, and deployed in compliance with applicable fire codes and safety standards.

This role requires approximately 30% travel, primarily to support operational projects across the U.S., with potential travel to international locations as well.

The preferred location is Louisville, CO, but we are open to reviewing U.S.-based candidates.

Key Responsibilities

Product Development

• Interpret and apply applicable NFPA, IFC, UL, and IEC standards to guide BESS product development and ensure safety requirements are embedded throughout the design lifecycle.
• Review and approve mechanical drawings, layouts, CAD models, and mechanization diagrams.
• Own safety-critical BESS enclosure design and requirements, providing technical oversight through prototype builds, factory acceptance testing, and design qualification to mitigate thermal runaway, explosion, and overall safety risks.
• Provide technical oversight of UL 9540 / 9540A testing, fire and explosion modeling (using tools such as FLACS, Ansys, FDS, or similar), plume and gas dispersion analyses, and evaluation of fire safety code requirements, including monitoring and applying evolving codes and standards.

Cross-Functional Engagement

• Develop and maintain fire code compliance matrices and AHJ-specific permitting documentation, while interfacing with Authorities Having Jurisdiction (AHJs), third‑party engineers, and certification bodies throughout the permitting and approval process.
• Provide technical guidance and training to internal teams, customers, and first responders.
• Lead development of emergency response documentation and safety packages required for project permitting submittals and maintain up to date Technical Data Packages for AES internal teams.
• Engage in industry consortiums and Technical Committees on BESS codes and standards; monitor and contribute to NFPA 855 and UL 9540 / 9540A revision cycles and public input processes to inform AES on evolving regulatory and technical requirements affecting BESS product design and testing.
• Advise and participate in AES BESS Product Development efforts to ensure the highest safety levels are achieved meeting all AES internal and industry regulatory requirements for BESS fire and explosion safety system.
• Mentor junior engineers and contribute to continuous improvement of BESS integration practices.

Required Qualifications

• Bachelor’s degree in Electrical Engineering, Mechanical Engineering, Fire Protection Engineering, or related discipline.
• 5-7 years of experience in mechanical design and fire protection for energy, industrial, or safety-critical systems.
• Strong working knowledge of BESS fire codes and standards, including UL 9540 / 9540A, NFPA 68 / 69, NFPA 72, NFPA 855, and NFPA 110/111.
• Experience supporting permitting, testing, and regulatory approval processes.
• Proficiency with mechanical CAD and safety modeling tools (SolidWorks, AutoCAD, etc.).

Preferred Qualifications

• Master’s degree in Electrical, Mechanical, or Fire Protection Engineering.
• Direct experience with utility-scale BESS.
• Experience working directly with AHJs and third‑party fire engineers.
• Participation in standards organizations (NFPA, UL, IEEE).
• Experience with fire modeling tools such as FLACS, Ansys, FDS, etc.

AES is an Equal Opportunity Employer who is committed to building strength and delivering long-term sustainability through diversity and inclusion. Respecting all backgrounds, differences and perspectives enables us to improve the lives of our people, customers, suppliers, contractors, and the communities in which we live and work. All qualified applicants will receive consideration for employment without regard to sex, sexual orientation, gender, gender identity and/or expression, race, national origin, ethnicity, age, religion, marital status, physical or mental disability, pregnancy, childbirth, or related medical condition, military or veteran status, or any other characteristic protected under applicable law. E-Verify Notice: AES will provide the Social Security Administration (SSA) and if necessary, the Department of Homeland Security (DHS) with information from each new employee's I-9 to confirm work authorization.