Senior Reliability Engineer

The AES Corporation; Louisville (CO); On-site; USD 113,000 - 142,000; Full time

Job summary

The AES Corporation seeks a Senior Reliability Engineer to drive reliability across PV+BESS inverter assets in the US portfolio. The role focuses on mechanical and electrical operation, asset data integrity, and proactive maintenance strategies.

Based in Louisville, CO, the candidate will travel up to 10–15% to project locations and partner offices, collaborating with operations and engineering to improve uptime and asset performance.

Qualifications

• Undergraduate engineering degree or equivalent experience.
• 5+ years engineering experience focused on equipment reliability.
• Renewables sector knowledge with PV+BESS inverter tech is a plus.
• FMEA and root cause analysis experience is required.
• Proficient in using CMMS, SCADA and data analytics tools.

Responsibilities

• Develop and oversee reliability strategies for PV+BESS inverter assets.
• Analyze reliability data and perform root cause investigations.
• Lead major repairs at operating sites and coordinate remediation.
• Evaluate sites for repowering and retrofit opportunities.
• Implement uptime improvements and new monitoring practices.
• Maintain asset master data in the CMMS/ERP system and develop asset hierarchies.

Skills

Reliability engineering

Root cause analysis (FMEA)

CMMS SAP PM

SCADA

Data analytics

SQL

Python

Excel

Education

Bachelor's degree in engineering

Professional Engineer (PE) qualifications

Tools

SCADA

CMMS (SAP PM)

SQL

Python

CAD tools

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.

AES’s mission is to improve lives by accelerating a safer and greener energy future. We are a global, agile, cohesive organization with an employee engagement level akin to a startup company. AES businesses throughout the world are often recognized as great places to work. Our people share a passion to help meet the world’s current and increasing energy needs, while providing communities and countries the opportunity for economic growth due to the availability of reliable, affordable electric power. The role serves a pivotal responsibility to ensure that AES CE operates and maintains the portfolio to standards that exceed industry best‑practice.

A day in the life of an AES Clean Energy Senior Reliability Engineer will include, but is not limited to:

• Analyzing reliability and availability of Inverter hardware and components
• Performing root cause analysis for equipment failures and developing recommendations to optimize asset reliability, coordinating remediation with external parties as needed
• Leading and facilitating major repairs to operational sites
• Evaluating operational sites for repowering and retrofit opportunities including cost benefit analysis
• Implementing new practices to improve uptime and efficiency
• Oversee the accuracy and integrity of asset master data within the CMMS/ERP system, including developing new asset hierarchies, bill of materials, and criticality assessments.

The Senior Reliability Engineer supports a larger operations team and serves as a domain expert for technical and engineering matters related to the reliable and available operation of PV+BESS Inverter systems. Excellent communication, task management and planning skills needed, in addition to technical breadth. The Senior Reliability Engineer is a highly skilled professional responsible for driving the development and implementation of a comprehensive reliability strategy for all installed and operating assets, working independently with minimal supervision, while fostering teamwork and continuous improvement within their area of expertise, to achieve strategic objectives.

The role will focus on the mechanical and electrical operation of PV+BESS Inverters and related equipment/components. The successful applicant will be very comfortable with high-level review of all elements of practical system design.

The position is ideally located in Louisville, CO; other US AES offices are allowable with hiring manager approval. The position may include up to 10‑15% travel to project locations and partner offices.

Key Responsibilities

Operations

• Develop and implement asset reliability strategies: Develop and oversee the implementation of reliability strategies for a portfolio of PV+BESS Inverter assets, balancing operational needs with long-term asset performance goals. Establish standard processes for maintenance activities and hardware configuration to increase equipment reliability and availability
• Gathers and examines reliability failure data from operating sites and the CMMS database, applying well‑defined engineering techniques to correlate data for analysis.
• Maintains an updated "bad actor" list and facilitates discussions with O&M management on fit‑for‑purpose recovery plans, highlighting requirements during the budget process.
• Identify root cause of performance problems on operational projects, and facilitate recommended action plans
• Collaborate with Operations and Engineering teams to troubleshoot existing projects and develop repair and remediation plans
• Design solutions for modifications to systems, and coordinate between various AES subcontractors and vendors where needed
• Lead the development and implementation of FMEAs for critical assets, ensuring proactive identification of potential failure modes and appropriate mitigation strategies. Facilitate continuous improvement to maintenance practices with internal operations personnel and 3rd Party vendors
• Perform Job Safety Assessments and Safety Walks to identify job‑site hazards
• Implement new practices with technology such as electrical monitoring systems and thermal imaging to improve reliability
• Scope and implement new tools and software for operations, leveraging SAP and work management processes.
• Provide technical expertise and support during planned outages, ensuring the efficient and reliable execution of maintenance and repair activities.

Growth and Leadership

• Participate in AES US Renewables' growth planning process by contributing to process improvement task forces and other strategic planning activities
• “Keep a tight loop” between Operations and new project development by recording and presenting issues that can be mitigated through better design and equipment selection.
• Perform life cycle cost modeling of project design to inform equipment and component selection. Provide reliability‑focused feedback during design reviews to ensure new systems and equipment incorporate reliability principles and best practices.
• Improve and develop processes for the execution of safe, quality and high‑reliability projects
• Educate team on changing trends in technology, standard methodologies and safety
• Provide guidance, mentorship, and technical expertise to junior reliability engineers within the team, fostering a culture of continuous improvement.

Skills And Qualifications

Primary Qualifications

• Undergraduate degree or equivalent experience in engineering or equivalent technical field
• 5+ years professional experience in engineering with a focus on measuring and maintaining equipment reliability, with an emphasis on high power electrical systems.
• Experience in renewable power generation industry and familiarity with all aspects of PV+BESS Inverter technology, e.g. PCS, BESS, PV Generation, DC Wiring, Controls, grid interactions, and HVAC
• Experience leading root cause and failure modes analysis methods (FMEA)
• Experience with reliability metric calculations, MTBF, MTTR, Weibull, etc.
• High proficiency with reading and understanding equipment/facility schematics
• Excellent written and verbal communication skills
• Proficient in the use of the Microsoft Office software suite
• Experience in using results of data analytics and database tools
• Experience with CMMS (SAP PM)
• Experience with SCADA, and condition monitoring systems.
• High degree of dedication to a quality safety culture and an incident‑free work environment
• Willingness to travel within the U.S. to support company’s portfolio of PV+BESS assets
• Personal values consistent with those of the AES Corporation; Safety, Integrity, Excellence, Agility and Fun

“Plus” Qualifications

• Professional Engineer qualifications, or on track to become qualified
• Certified Maintenance & Reliability Professional (CMRP) - Society for Maintenance & Reliability Professionals (SMRP)
• Certified Reliability Engineer (CRE) - ASQ (American Society for Quality)
• Master’s Degree or equivalent experience in Engineering
• Experience with control logic and power electronic devices
• Experience with renewables power production, utility interconnection practices, and contract terms.
• Proficiency in Python or other “beyond Excel” analysis tools.
• Proficiency with SQL programming to query and manage data from SQL servers.
• Proficiency with CAD tools
• Spanish language skills valued

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.

The expected salary for this position, at commencement of employment, is between $113,000 and $141,525/year; however, base pay offered may vary depending on multiple individualized factors, including market location, job‑related knowledge, skills, and experience. The total compensation package for this position also includes annual bonus. The benefits offered for this position are: medical, dental, and vision coverage, life insurance, 401(k) eligibility, and paid time off (including vacation, sick leave time, and parental leave). Details of participation in these benefit plans will be provided if a candidate receives an offer of employment. If hired, employee will be in an “at‑will position” and the Company reserves the right to modify base salary (as well as any other discretionary payment or compensation program) at any time, including for reasons related to individual performance, Company or individual department/team performance, and market factors.