Senior Electrical Engineer – Battery Systems, Controls & EMS Integration

ON.energy; Tysons (VA); On-site; USD 100,000 - 130,000; Full time

Benefits offered by this job

Competitive salary + annual performance-based bonus eligibility

Medical, dental, and vision insurance

401(k) with company match

Paid time off and company holidays

Professional development opportunities

Job summary

ON.energy is seeking a Senior Electrical Engineer in Tysons, Virginia, to lead the design and optimization of utility-scale Battery Energy Storage System (BESS) projects. This role requires 8+ years of electrical engineering experience with a focus on battery systems and controls expertise.

The engineer will work collaboratively to evaluate technologies and ensure the integration of energy management systems, plant controllers, and SCADA. Competitive salary and benefits package offered, including medical insurance and 401(k) matching.

Qualifications

• 8+ years of electrical engineering experience focused on battery systems.
• Deep knowledge of battery sizing and lifecycle modeling.
• Proven ability to lead integration efforts including SCADA configuration.

Responsibilities

• Provide technical leadership for design and validation of BESS projects.
• Lead battery sizing and evaluate BESS technologies.
• Drive integration of EMS, Plant Controllers, and SCADA systems.

Skills

Electrical engineering

Battery systems expertise

BESS vendor evaluation

Controls strategy validation

SCADA configuration

Tools

Python

VS Code

Jupyter Notebooks

Git

Job description

Senior Electrical Engineer – Battery Systems, Controls & EMS Integration

Tysons

ON.energy is building the power infrastructure that makes the AI era possible. As AI demand surges past what the grid and traditional data centers can support, ON.energy provides a new class of power technology proven at gigawatt scale and trusted by the world’s leading cloud and AI companies. Our systems are already deployed across 2.5 GW of hyper‑scale campuses, validated by top U.S. national labs, and certified for grid‑safe operation by major utilities. With real products in the field, we’re scaling faster than the grid can, transforming power from a bottleneck into a competitive advantage for the companies building the future.

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
• SCADA and operational analytics

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.
• 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.

Benefits for U.S.‑based Roles

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

Benefits for Mexico‑based Roles

• Competitive salary + annual performance bonus eligibility
• Major medical expenses and life insurance
• Paid time off and holidays (per local policy)

Other Benefits

• 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.
• Benefits vary by role and location and are subject to change.