SCADA Engineer - EMS

Key Responsibilities

• Configure and maintain SCADA tags, UDTs (User Defined Types), and device connections in Ignition, ensuring a consistent and scalable foundation across sites.
• Design and maintain MQTT based communication for SCADA, including broker configuration, topic structure, and integration with Ignition.
• Integrate SCADA systems with PLCs and other field devices across BESS and grid connected inverter topologies, using protocols such as MQTT, Modbus TCP/RTU, OPC UA, and DNP3.
• Build and maintain tools that support the HMI team, such as automated UDT and tag generation, configuration templates, and data validation utilities.
• Build and maintain tools that support the controls team, such as scripts for point checkout, configuration comparison, and deployment automation.
• Identify and implement improvements to the efficiency, performance, and reliability of the current SCADA configuration and deployment process as it continues to develop and scale.
• Troubleshoot SCADA and communication issues in both development and live production environments, including field support as needed.
• Support commissioning activities, including point to point checkout, alarm validation, and system testing.
• Document SCADA configuration standards, tag maps, and MQTT topic structures to support long term maintainability.
• Participate in the ongoing development of company alarm management and SCADA standards.
• Design and maintain scalable SCADA architectures across OT, DMZ, and Cloud environments, including Ignition
• Gateway Network, Remote Tag Providers, MQTT infrastructure, and historian integrations.
• Participate in architecture reviews and propose improvements that increase system reliability, maintainability, and scalability.
• Analyze and optimize SCADA performance, including tag execution rates, historian throughput, Gateway
• Network traffic, database performance, MQTT publish rates, and overall system resource utilization.
• Perform root cause analysis for latency, communication bottlenecks, and data quality issues across distributed SCADA systems.
• Design, configure, and validate redundant SCADA architectures, including Ignition redundancy, redundant MQTT brokers, historian failover, and communication resiliency.
• Execute disaster recovery and failover testing procedures to ensure high system availability.
• Design and maintain historical data strategies using Ignition Tag Historian and SQL databases.
• Optimize historian storage, retention policies, data compression, and historical query performance.

Requirements

• Bachelor's degree in Electrical Engineering, Controls Engineering, Computer Engineering, or a related field, or equivalent practical experience.
• 3+ years of hands on experience with Ignition, including tag configuration, UDT setup, device connections, and scripting.
• Experience with the Vision or Perspective modules is a plus but not the focus of this role.
• Working knowledge of industrial communication protocols such as MQTT, Modbus TCP/RTU, OPC UA, or DNP3.
• Experience building or maintaining scripts or tools that support configuration, deployment, or validation of SCADA systems.
• Strong troubleshooting skills across both software and field level hardware issues.
• Clear written and verbal communication skills, with the ability to document technical work for both technical and non technical audiences.

Preferred

• Understanding of PLC based control systems and the ability to read and interpret control logic.
• Familiarity with Siemens PLC platforms.
• Experience with battery energy storage systems (BESS) or renewable energy assets.
• Experience with SQL databases and historian systems.
• Familiarity with Azure DevOps or similar work tracking tools for engineering documentation and issue management.
• Knowledge of alarm management standards such as ISA 18.2.
• Bilingual in English and Spanish is a plus, given cross functional coordination with regional teams.

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

Agency Notice: ON.energy does not accept unsolicited resumes from staffing agencies, search firms, or third-party recruiters. Resumes submitted without a fully executed Master Services Agreement (MSA) and a written request from an authorized member of our Talent Acquisition team will be considered the property of ON.energy. No placement fees or compensation will be paid for unsolicited candidate submissions.