Senior Controls Engineer – Data Center Thermal System

Position Summary We are seeking an experienced Senior Controls Engineer to lead the design, development, and optimization of control systems for data center cooling infrastructure. This role is critical to delivering intelligent, efficient thermal management solutions that support high-density computing environments, including advanced GPU clusters and liquid cooling systems. The ideal candidate combines deep expertise in building automation and industrial controls with a strong understanding of HVAC systems, chiller plants, and the unique operational demands of mission-critical facilities. Key Responsibilities Controls System Design & Development Architect and develop control sequences for chiller plants, cooling distribution units (CDUs), computer room air handlers (CRAHs), and liquid cooling loops Design control strategies that optimize energy efficiency, maintain precise temperature and humidity setpoints, and ensure redundancy for Tier III/IV data center environments Develop logic for variable-speed pump and fan control, valve sequencing, and thermal load balancing across cooling infrastructure System Integration & Commissioning Lead integration of controls with Building Management Systems (BMS), Data Center Infrastructure Management (DCIM) platforms, and facility monitoring systems Oversee commissioning activities including I/O checkout, loop tuning, functional performance testing, and sequence verification Develop and execute test protocols for factory acceptance testing (FAT) and site acceptance testing (SAT) Technical Leadership Serve as subject matter expert for controls engineering on complex data center projects Mentor junior engineers and technicians on controls best practices, programming standards, and troubleshooting methodologies Collaborate with mechanical engineers, project managers, and customers to translate thermal requirements into robust control solutions Continuous Improvement & Innovation Evaluate emerging technologies including AI/ML-based optimization, predictive maintenance algorithms, and advanced sensor integration Contribute to the development of standardized control sequences and reusable code libraries Support R&D initiatives for next-generation cooling solutions including direct liquid cooling and immersion systems Required Qualifications Bachelor's degree in Mechanical Engineering, Electrical Engineering, Controls Engineering, or related field 7+ years of experience in controls engineering with at least 4 years focused on data center or mission critical facility applications Expert-level proficiency in PLC and DDC programming (Tridium Niagara, Siemens, Allen-Bradley, or equivalent platforms) Strong understanding of chiller plant optimization, psychrometrics, and hydronic system design Experience with industrial communication protocols: BACnet, Modbus, SNMP, OPC-UA Familiarity with ASHRAE guidelines for data centers (TC 9.9 Thermal Guidelines, Standard 90.4) Demonstrated ability to read and interpret P&IDs, control diagrams, and electrical schematics Preferred Qualifications Master's degree in Engineering or related discipline Experience with liquid cooling systems including rear-door heat exchangers, direct-to-chip cold plates, and immersion cooling Knowledge of power monitoring, PUE optimization, and energy management strategies Professional Engineer (PE) license Certifications: Niagara 4 Technical Certification, Certified Energy Manager (CEM), or equivalent Experience with high-performance computing (HPC) or AI/ML training cluster thermal requirements Familiarity with cybersecurity best practices for operational technology (OT) networks Technical Environment Building automation platforms: Metasys, Tridium Niagara, Desigo CC Programming: Structured Text, Function Block Diagram, Ladder Logic, Python for scripting/analytics Visualization: Ignition, Grafana, or similar SCADA/HMI platforms Networking: TCP/IP, VLANs, firewall configuration for controls networks What We Offer Opportunity to work on cutting-edge thermal solutions for hyperscale and enterprise data centers Collaborative environment with industry-leading engineers and researchers Professional development support including conference attendance and continuing education Competitive compensation and comprehensive benefits package

Johnson Controls International plc. is an equal employment opportunity and affirmative action employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, protected veteran status, genetic information, sexual orientation, gender identity, status as a qualified individual with a disability or any other characteristic protected by law. To view more information about your equal opportunity and non-discrimination rights as a candidate, visit EEO is the Law. If you are an individual with a disability and you require an accommodation during the application process, please visit here.