Senior Electrical Engineer – Battery Systems,Controls & EMS Integration Job Atlanta area,Georgia USA,Engineering

ON.energyis 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.energydevelops

projects worldwide that set new benchmarks for resilience.

Location: Tysons, VA / Atlanta, GA / Miami, FL / East Coast

Schedule: Hybrid in Tysons (or) regular visits to Tysons if East Coast

Travel: 25-30% required travel (outside of travel to Tysons)

As a Senior Electrical Engineer – Battery Systems, Controls & EMS Integration
, you will provide technical leadership for the design, validation, and optimization of utility-scale Battery Energy Storage System (BESS) projects supporting next-generation data center and grid applications. Reporting to the Chief Electrical Engineer, you will lead battery sizing, evaluate BESS technologies, validate inverter/PCS performance, and drive the integration of EMS, Plant Controllers, and SCADA systems to ensure reliable, high-performing energy storage solutions.

This is a highly collaborative role that combines advanced engineering analysis, controls expertise, and operational optimization to shape the future of large-scale energy infrastructure.

Key Responsibilities:

Battery sizing and lifecycle modeling
BESS vendor model review and validation
EMS and Plant Controller integration
Controls strategy validation
Inverter/PCS modeling experience
SCADA and operational analytics
Python, VS Code, Jupyter Notebooks, Git

Required Qualifications:

8+ years of electrical engineering experience, with a focus on battery systems, BESS vendor evaluation, inverter/PCS performance validation, and EMS or Plant Controller integration.
Battery & Controls Expertise: Deep knowledge of battery sizing, lifecycle modeling, controls strategy validation, and BESS vendor model review in utility-scale energy storage environments including experience with PSCAD and MATLAB.
Systems Integration: Proven ability to lead EMS and Plant Controller integration efforts, including SCADA configuration and operational optimization for BESS deployments.
Software Proficiency: Working knowledge of Python, VS Code, Jupyter Notebooks, and Git for engineering analysis and operational analytics.
Communication: Ability to coordinate effectively with EMS vendors, controls engineers, and cross-functional teams to deliver reliable and optimized energy storage solutions.

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For US-based roles
- What you’ll 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 you’ll 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: ON.energy 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 re
Benefits vary by role and location and are subject to change.

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