We’re looking for a Senior Controls Engineer with project-based engineering experience to lead network-and-controls-related hardware product design, documentation, project-specific technical compliance and support the development activities related to these products. This is a product focused role—we need someone who can speak fluently about both network architecture and industrial control systems, ideally have experience in mission critical applications, and interface with IT, software, project, commissioning and O&M engineering teams. 

Key Responsibilities: 

• Support the business development team by providing technical proposals e.g. network diagrams that meet the customer’s needs.
• Collaborate across control systems, SCADA, and IT teams to ensure complete and secure connectivity
• Integrate and support industrial protocols like Modbus, DNP3, and OPC-UA
• Compile product technical information packages for the project engineering team.
• Co-lead review and validation of network/controls product-related topics during the project execution phase. 
• Maintain technical documentation including as-built drawings
• Support product development by capturing design improvement feedback from the different project phases: design, commissioning and O&M.
• Support product development by recommending design approaches and vendors of the main equipment.
• Participate in product design sprints with the development team.
• Participate in the product’s commissioning phase. 

Required Experience

• Bachelor’s degree in Controls Engineering, Electronics Engineering, or similar technical field.
• 8+ years of hands-on controls engineering experience in project-based or industrial settings.
• Proven experience in project network deployments, not just operations
• Strong grasp of protocols (TCP/IP, BGP, OSPF, VLANs, VPNs)
• Familiarity with control systems and operational technology (OT)
• Ability to produce and read network and control architecture drawings
• Excellent communication skills across technical and non-technical teams.
• Willing to travel up to 20% for product FAT inspection and site commissioning witnessing. 

Preferred Experience

• Certifications: ISA CAP/CCST, Rockwell, Siemens, Schneider or similar
• Experience with BESS, SCADA, EMS, Safety Systems or utility-scale infrastructure
• Background in energy, utility, or data center environments 

We’re looking for a Senior Compliance Engineer with deep expertise in regulatory requirements, codes, and certification processes applicable to BESS, power electronics, and electrical distribution systems e.g. panelboards, switchboards, etc.. This is a product-focused and cross-functional role responsible for ensuring that our systems meet all applicable North American and international standards, as well as ISO/RTO interconnection and market requirements. You will serve as the internal authority on compliance, working closely with product, R&D, and project engineering teams to ensure designs are certifiable, deployable, and aligned with evolving regulatory frameworks.

Key Responsibilities:

• Lead compliance strategy and execution for BESS, DC cabinets, inverters, and related power, controls /IT equipments.
• Interpret and apply standards such as UL, CSA, IEEE, IEC, and NFPA to product and project designs.
• Act as the subject matter expert on ISO/RTO regulatory requirements (e.g., interconnection, grid codes, testing protocols).
• Define and manage certification roadmaps for new and existing products.
• Coordinate and support product testing and certification activities, including UL listings, field evaluations, and special inspections.
• Develop and maintain with Technical Writer compliance documentation, including test plans, reports, and certification packages.
• Work directly with NRTLs and certification bodies to facilitate approvals and resolve technical issues.
• Support engineering teams by ensuring designs meet code and standard requirements from early development stages.
• Review and validate test procedures and results, including electrical, thermal, environmental, and safety testing.
• Support project teams during AHJ reviews, permitting, and commissioning, addressing compliance-related questions.
• Monitor and interpret regulatory changes and emerging standards, ensuring proactive alignment of products.

Required Skills & Experience:

• Bachelor’s degree in Electrical Engineering, Mechanical Engineering, or related field.
• 10+ years of experience in compliance, certification, or regulatory engineering for BESS, power electronics, or industrial electrical systems.
• 4+ years experience with working knowledge of key standards, including:
  • UL (e.g., UL 9540, UL 9540A, UL 1741, UL 508A)
  • CSA standards for electrical equipment
  • IEEE standards related to power systems and interconnection
  • IEC standards for international compliance
  • NFPA (e.g., NFPA 855)
• Deep understanding of test procedures and certification processes, including safety, thermal runaway, environmental, and performance testing.
• Familiarity with ISO/RTO requirements (e.g., ERCOT, PJM, CAISO, MISO) and grid interconnection standards.
• Experience working with NRTLs (e.g., UL, CSA, Intertek) and managing certification programs.
• Ability to interpret and apply codes, standards, and regulatory language into practical engineering requirements.
• Strong communication skills across engineering, regulatory authorities, and external certification bodies.
• Project Management skills.

Preferred Experience:

• Experience with utility-scale and/or C&I BESS deployments.
• Direct involvement in UL 9540A fire testing, LSFT or similar safety validation programs.
• Knowledge of utility -scale inverter compliance requirements.
• Experience supporting permitting and AHJ engagement in the U.S.
• Background in quality systems or regulatory audits.

We are seeking a Senior Mechanical Engineering Manager with strong experience in structural analysis and mechanical systems validation to lead the mechanical design activities for the products deployed for our energy infrastructure and mission-critical projects. This is a product focused role—we need someone who can speak fluently about ensuring the structural integrity, mechanical reliability, safety and validate the thermal performance of equipment and supporting structures under static and dynamic operating conditions, ideally have experience with mission critical applications, and interface with project, commissioning and O&M engineering teams.

Key Responsibilities: 

• Perform structural stress and fatigue analysis for mechanical assemblies, enclosures, and supporting infrastructure used in ON.energy’s product offering.
• Lead and/or review Finite Element Analysis (FEA) models or reports to validate mechanical designs under static, dynamic, thermal, and seismic loading conditions.
• Ensure mechanical and structural safety under operational loads, transportation loads, vibration, and environmental conditions.
• Evaluate failure modes and recommend design improvements to enhance durability, reliability, and lifecycle performance.
• Collaborate with BESS, Power Electronics and Controls teams to ensure integrated system performance.
• Support development and review of mechanical documentation including calculations, reports, specifications, and as-built drawings.
• Experience designing heating, ventilation, and air-conditioning (HVAC) systems. Overall have experience with thermal design of enclosures e.g. calculations of HVAC, identification of temperature limits, humidity management and mitigation.
• Participate in product design sprints with the development team.
• Provide technical input during product design iterations based on lessons learned from project engineering design, installation, commissioning, and operations.
• Project management skills.
• Excellent communication skills across technical and non-technical teams.
• Willing to travel up to 20% for product FAT inspection and site commissioning witnessing.

Required Skills & Experience

• Bachelor’s degree in Mechanical Engineering or similar technical field.
• 15+ yearsof hands-on structural and mechanical engineering experience in project-based or industrial settings.
• Strong experience performing stress analysis, fatigue analysis, and vibration assessment.
• Demonstrated experience ensuring structural safety and compliance with applicable engineering standards and codes.
• Ability to interpret engineering drawings and develop detailed reports and calculations.

Preferred Experience:

• Experience with Power Electronics, UPS/mission critical applications or utility-scale infrastructure where mechanical system are applied.
• Panel building mechanical design experience for power and controls/IT equipment.

Role Overview

We’re looking for a Senior BESS Engineer with project-based engineering experience to lead the BESS and DC Cabinet product design, documentation, project-specific technical compliance and support the development activities related to these products. This is a product focused role—we need someone who can speak fluently about both BESS systems and DC cabinets, ideally have experience with mission critical applications, and interface with project, commissioning and O&M engineering teams.

What You’ll Do

• Support the business development team by providing technical proposals e.g. SLDs and GAs that meet the customer’s needs.
• SOC analysis for multiple market applications.
• Compile product technical information packages for the project engineering team.
• Co-lead review and validation of the BESS- and DC Cabinet-related topics during the project execution phase.
• Maintain technical documentation including as-built drawings
• Support product development by capturing design improvement feedback from the different project phases: design, commissioning and O&M.
• Support product development by recommending design approaches and vendors of the main equipment.
• Participate in product design sprints with the development team.
• Participate in the product’s commissioning phase.

Required Qualifications

• Bachelor’s degree in Electrical Engineering, Power Electronics Engineering, or similar technical field.
• 8+ years of hands-on BESS engineering experience in project-based or industrial settings.
• Proven system-level design experience of MWh scale BESS
• Understanding of BESS systems integration with power electronics equipment.
• Ability to produce and read single lines and general arrangement drawings
• Excellent communication skills across technical and non-technical teams.
• Willing to travel up to 20% for product FAT inspection and site commissioning witnessing.

Preferred Plus

• Experience with Power Electronics, UPS/mission critical applications or utility-scale infrastructure

We’re looking for a Controls Engineer with project-based engineering experience to support network-and-controls-related hardware product design, documentation, project-specific technical compliance and support the development activities related to these products. This is a product focused role—we need someone who can speak fluently about both network architecture and industrial control systems, ideally have experience in mission critical applications, and interface with IT, software, project, commissioning and O&M engineering teams.

What You’ll Do

• Support the business development team by providing technical proposals e.g. network diagrams that meet the customer’s needs.
• Collaborate across control systems, SCADA, and IT teamsto ensure complete and secure connectivity
• Integrate and support industrial protocols like Modbus, DNP3, and OPC-UA
• Compile product technical information packages for the project engineering team.
• Co-lead review and validation of network/controls product-related topics during the project execution phase.
• Maintain technical documentation including as-built drawings
• Support product development by capturing design improvement feedback from the different project phases: design, commissioning and O&M.
• Support product development by recommending design approaches and vendors of the main equipment.
• Participate in product design sprints with the development team.
• Participate in the product’s commissioning phase.

Required Qualifications

• Bachelor’s degree in Controls Engineering, Electronics Engineering, or similar technical field.
• 3+ yearsof hands-on controls engineering experience in project-based or industrial settings.
• Strong grasp of protocols (TCP/IP, BGP, OSPF, VLANs, VPNs)
• Familiarity with control systems and operational technology (OT)
• Ability to produce and read network and control architecture drawings
• Excellent communication skills across technical and non-technical teams.
• Willing to travel up to 20% for product FAT inspection and site commissioning witnessing.

Preferred Plus

• Experience with BESS, SCADA, EMS, Safety Systems or utility-scale infrastructure
• Background in energy, utility, or data center environments