Senior Test Engineer HIL

is building the backbone of energy and AI infrastructure powering grid-safe data centers and mission-critical facilities. The company supplies and operates hyperscale power systems that solve the toughest resilience challenges delivering custom solutions for AI data centers mission-critical facilities and front-of-the-meter assets. ON recently announced a 5GW partnership with 3GW currently under construction across multiple hyperscale data center campuses. With patented technology and proprietary softwaredevelops projects worldwide that set new benchmarks for resilience.

The HIL Test Engineer develops and operates hardware-in-the-loop and real-time simulation capability for storage and power conversion products. The role covers real-time model development integration of controllers and firmware with the simulation environment execution of structured test campaigns and the reporting that supports design reviews and product is a hands-on laboratory and integration role working closely with the controls firmware modeling and product engineering teams.

• Develop and maintain real-time models of plant grid and equipment behavior for use in controller testing.
• Configure and operate the HIL environment including real-time simulator I/O interfaces signal conditioning and data acquisition.
• Integrate product controllers control software and firmware builds with the simulation environment and maintain those configurations under version control.
• Integrate supplier-provided equipment models and develop equivalent models where required.
• Plan and execute functional performance fault boundary-condition and regression test campaigns against defined acceptance criteria.
• Verify control performance across normal operation disturbances abnormal conditions and recovery.
• Compare test results against offline simulation studies and laboratory measurements and resolve discrepancies.
• Develop scripts and tooling to automate test execution data processing and reporting.
• Investigate failures with controls and firmware engineers support root-cause analysis and re-test to closure.
• Prepare test reports documenting method configuration results limitations and recommendations.
• Maintain laboratory safety equipment configuration records and documentation.

• Four or more years in HIL testing real-time simulation controls validation or laboratory testing of grid-connected power electronics.
• Bachelors degree or higher in electrical engineering power systems controls engineering or a related discipline.
• Direct experience on at least one real-time simulation platform such as RTDS/RSCAD Typhoon HIL or OPAL-RT.
• Working capability with offline simulation tools such as MATLAB/Simulink and PSCAD and an understanding of what has to change when a model is made to run in real time.
• Grounding in inverter controls energy storage systems and power system dynamics.
• Python or a comparable language used in earnest for test automation and data analysis.
• Test plans procedures and acceptance criteria you have authored yourself and the analytical rigor to stand behind the results.
• Familiarity with SCADA systems and industrial communication protocols such as Modbus DNP3 CAN and IEC 61850.
• Comfort on the bench with power supplies oscilloscopes transducers and data acquisition hardware.
• The ability to present technical findings credibly to engineering audiences and clearly to field and commissioning personnel.

Preferred Experience

• Experience with grid-forming and grid-following inverter control.
• Experience with uninterruptible power supply systems microgrids or facilities serving critical load.
• Familiarity with ISO or utility interconnection requirements model quality testing or third-party product certification.
• Continuous-integration pipelines driving automated test suites with version control applied to models as rigorously as to code.
• Prior collaboration with national laboratories or university test centers.

For US-based roles - What youll get:

• Competitive salary annual performance-based bonus eligibility
• Medical dental and vision insurance
• 401(k) with company match
• Paid time off and company holidays

For Mexico-based roles - What youll get:

• Competitive salary annual performance bonus eligibility
• Christmas Bonus (Aguinaldo): 30 days
• Major medical expenses and life insurance
• Paid time off and holidays (per local policy)

For all roles:

• Professional development and growth opportunities
• Opportunity to grow with a mission-driven team shaping the future of clean energy
• Equal Opportunity: is committed to equal employment opportunity and to maintaining a work environment free of harassment discrimination or retaliation.
• Accommodations: If you need an accommodation during the application process email
• Benefits vary by role and location and are subject to change.

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