Senior Software & Controls Engineer EMS

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 Senior Software & Controls Engineer is responsible for the design development testing integration and commissioning of control software and automation systems that ensure the reliable efficient and safe operation of energy storage systems and power infrastructure projects. This role bridges software engineering control systems and field deployment working closely with internal engineering teams project management vendors and clients to deliver high-performance control and SCADA solutions that meet safety regulatory and operational requirements.

Key Responsibilities

• Design model and implement control algorithms and control strategies for energy storage systems and power infrastructure.
• Contribute to system architecture discussions and define control strategy requirements and functional specifications.
• Design develop and maintain PLC HMI and embedded/control software for energy storage and distributed energy systems.
• Configure integrate and maintain SCADA systems for BESS and power infrastructure projects.
• Write clean efficient maintainable and well-documented code following best practices.
• Build automation scripts testing tools simulation environments and continuous integration pipelines.
• Implement version control software documentation and CI/CD workflows.
• Collaborate with electrical mechanical firmware and field service teams to ensure full system functionality and seamless integration.
• Support the selection configuration and integration of control hardware including controllers relays meters and network devices.
• Conduct Factory Acceptance Tests (FATs) and Site Acceptance Tests (SATs).
• Diagnose and resolve issues related to control logic real-time execution PLC/SCADA behavior and system performance both remotely and on-site.
• Ensure compliance with cybersecurity requirements and relevant standards and codes (e.g. UL IEEE NFPA).
• Support installation commissioning field deployments and ongoing operational troubleshooting.
• Interface with clients vendors and internal stakeholders to provide technical documentation training and ongoing support.

Requirements

• Bachelors degree in Electrical Engineering Controls Software Engineering or a related field or equivalent experience.
• 5-8 years of experience developing PLC HMI and control software for industrial or energy systems
• Strong object-oriented programming skills (e.g. C C# Python or similar).
• Hands-on experience with Siemens PLC programming (TIA Portal).
• Experience with Ignition SCADA including HMI development and system integration.
• Familiarity with control algorithms real-time systems and industrial automation concepts.
• Knowledge of industrial communication protocols (e.g. Modbus OPC UA Profinet).
• Experience with version control systems and structured software development practices.
• Ability to troubleshoot control systems both remotely and on-site.
• Willingness to travel for commissioning and field deployments including travel to the United States

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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