Control Testing Engineer - Morrisville​/Raleigh, NC

Delta, founded in 1971, is a global provider of power and thermal management solutions. Its mission statement, "To provide innovative, clean and energy-efficient solutions for a better tomorrow," focuses on addressing key environmental issues such as global climate change. As an energy-saving solutions provider with core competencies in power electronics and automation, Delta's business categories include Power Electronics, Mobility, Automation, and Infrastructure.

At Delta, we’re leading the energy transition with innovative solutions in solar inverters, energy storage systems, and EV charging infrastructure. Our technologies are helping utilities, businesses, and communities decarbonize and build resilient, intelligent energy ecosystems. Join us in creating a cleaner, smarter energy future.

You will own the test strategy for the full microgrid control stack — from PCS/BESS firmware and Unit Controller through RT, SCADA, and EMS. You will build and run HIL test benches on RTDS automate regression, and produce the evidence needed for UL 1741-SB, IEEE , and customer/utility acceptance.

• Design and operate HIL test benches using RTDS — model power systems, PCS/BESS, and grid scenarios
• Define test plans for islanding, black start, ride-through (LVRT/HVRT/FRT), protection coordination, mode transitions, and EMS dispatch
• Build automated regression:
  Python / Test Stand / pytest pipelines integrated with Azure Dev Ops CI/CD; publish coverage and pass/fail dashboards
• Run integration tests across different layers validate timing, data contracts, alarm propagation, and failover behavior
• Generate certification evidence and test reports for IEEE , UL 1741-SB, and customer specific factory and site acceptance tests (FAT/SAT)
• Support commissioning and field issues into regression cases

• BS/MS in Electrical / Power / Control Systems Engineering; 4+ years (Senior: 7+) in controls testing, HIL, or commissioning
• Hands‑on with RTDS and/or OPAL‑RT, including model build, I/O mapping, and amplifier interfaces (PHIL is a plus)
• Strong Python scripting; experience with one automation framework (pytest, robot, Test Stand, LabVIEW)
• Working knowledge of Modbus TCP, IEC 61850 (GOOSE/MMS), DNP3 — and how to inject/simulate them in test
• Familiarity with UL 1741-SB, IEEE , and FAT/SAT processes for energy storage and microgrids

• Cybersecurity test exposure (fuzzing protocols, IEC 62443 verification)
• Field commissioning experience on BESS / microgrid / utility-scale projects

Life at Delta

Delta Electronics Americas is an Equal Opportunity Employer and is committed to compliance with all applicable federal, state, and local laws. Delta Electronics America is committed to fostering a diverse, inclusive, and respectful workplace. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, age, marital status, national origin, disability, veteran status, or any other protected characteristic.