ON.energy 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 software, ON.energy develops projects
worldwide that set new benchmarks for resilience.

ROLE OVERVIEW

The Testing Engineer will support the Test Lead in the design, technical sizing,
integration, and execution of tests for Battery Energy Storage Systems (BESS)
and Grid-Following/Grid-Forming (GFL/GFM) systems within ON.energy’s Research
and Development area. The engineer will assist with product development,
validation, and risk mitigation activities, collaborating in the planning and
execution of validation cycles in the testing laboratory under the supervision




of the Test Lead, to whom they will report directly.

The main objectives are to mitigate system architecture risks for ON.energy’s
current and future product lines through rigorous laboratory stress testing,
bridge the gap between laboratory results and real-world conditions, and support
training, troubleshooting, and customer engagement activities.

KEY RESPONSIBILITIES

Design, Sizing, and Integration
* Design and Sizing - Support the calculation and sizing of BESS systems
(capacity, power, discharge rate, operating cycles, and efficiency) and
GFL/GFM solutions according to project requirements.
* Component Selection - Support the selection and integration of appropriate
components based on the application (peak shaving, power quality, HIL,
dynamic test profiles, etc.), including batteries, BMS, inverters, protection
devices, and cabling.
* Electrical Engineering - Assist in preparing single-line

📌 Test Engineer, R&D (Villahermosa)
🏢 On.Energy
📍 Villahermosa