Controls Engineer

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Argonne National Laboratory is seeking an experienced Controls Engineer to lead building automation and HVAC control system initiatives across our research campus. This role focuses on programming, optimizing, and maintaining Johnson Controls Metasys building automation systems to ensure efficient operation of complex HVAC infrastructure that supports world‑class scientific research. The successful candidate will contribute to our mission of scientific excellence by serving as a technical expert in controls engineering, driving performance optimization and system reliability.

• Design, program, and implement control sequences for HVAC systems using Johnson Controls Metasys building automation platform
• Develop and modify direct digital control (DDC) logic, graphics, and system applications to optimize building performance and energy efficiency
• Create and maintain control system documentation including sequence of operations, points lists, network architecture diagrams
• Engineer and maintain control solutions for complex HVAC systems including VAV systems, central plants (chillers, boilers, cooling towers), air handling units, and laboratories
• Perform analysis and implement control strategies to reduce operational costs while maintaining occupant comfort and environmental requirements

• Configure and integrate controllers (SNEs, SNCs, CGM field controllers) into the enterprise building automation network
• Develop and optimize control sequences based on industry best practices
• Commission new control systems and verify proper operation through functional performance testing
• Analyze system performance data using trending and analytics tools to identify optimization opportunities
• Implement advanced control strategies including demand‑based ventilation, optimal start/stop, load reset schedules, and predictive algorithms

• Assist Building Maintenance group by diagnosing and resolving complex control system issues using systematic troubleshooting methodologies and diagnostic tools
• Debug control programming errors and optimize code performance for improved system response and temperature stability
• Respond to critical system alarms and implement effective corrective actions to minimize impact on facility operations
• Provide technical expertise to Project Teams during HVAC system start‑ups, commissioning activities, and retrofit projects
• Perform calibration and verification of sensors, actuators, and control devices to ensure accurate system operation

• Assist in development of scope and oversee execution of capital improvement/retrofit controls projects from design through commissioning
• Collaborate with mechanical engineers, contractors, and operations staff to implement integrated building system solutions
• Manage multiple concurrent projects while maintaining quality standards and meeting deadlines
• Mentor junior technical staff and share controls engineering knowledge across the organization
• Communicate technical concepts effectively to diverse audiences including facility managers, researchers, and executive leadership

• Bachelor’s degree in Mechanical Engineering, Controls Engineering, Computer Engineering, Building Automation, or related technical discipline

• Minimum 6 years of hands‑on experience programming and configuring HVAC building automation systems
• Strong understanding of HVAC system design principles and mechanical systems including air handlers, VAV systems, chilled water plants, hot water systems, pumping configurations, and heat recovery systems
• Experience developing control sequences for energy optimization and demand response applications
• Working knowledge of network communications and system integration standards
• Ability to interpret mechanical drawings, control diagrams, and Piping and Instrumentation Diagrams

• Excellent analytical and problem‑solving skills with systematic approach to troubleshooting
• Strong verbal and…