Senior Building Automation Field Engineer

Senior Building Automation Engineer•BAS Key Responsibilities Lead the technical execution and delivery of Building Automation Systems (HVAC controls, controllers, networks, and field devices) from design through commissioning and handover. Serve as the senior technical authority on Siemens and/or Reliable BAS platforms; provide oversight and guidance on Tridium/Niagara architectures where applicable. Review and validate control strategies, sequences of operation, and system architectures developed by engineering and programming teams. Lead and oversee system commissioning, functional testing, and performance verification , ensuring systems meet design intent and client requirements. Diagnose and resolve complex BAS, HVAC, and network communication issues (BACnet, LonWorks, Modbus, IP-based systems). Coordinate BAS integration with mechanical, electrical, fire/life safety, and IT/networking systems . Act as the primary technical liaison with clients, consultants, facility teams, and project managers . Provide technical mentorship and escalation support to engineers, programmers, and field technicians. Support project teams with technical risk identification, system optimisation, and value engineering . Review engineering documentation including control drawings, points lists, sequences, network diagrams, and commissioning plans . Ensure all systems comply with codes, standards, safety requirements, and internal quality processes . Support long-term system performance through post-install optimisation, troubleshooting, and client advisory services . Required Experience & Skills 7+ years of progressive experience in Building Automation Systems within commercial, healthcare, pharmaceutical, or mission‑critical environments . Strong platform expertise with Siemens and/or Reliable BAS . Solid working knowledge of Tridium/Niagara architectures (design, integration, and troubleshooting rather than day-to-day programming). Proven experience leading commissioning activities and resolving complex system-level issues. Deep understanding of HVAC systems, control strategies, and BAS networking concepts . Strong troubleshooting capability across DDC systems, controllers, field devices, and IP networks . Ability to review, challenge, and improve control designs and sequences produced by others. Experience working from and reviewing engineering drawings, wiring diagrams, and control schematics . Excellent communication skills with the ability to interface confidently with clients and senior stakeholders . Strong organisational, documentation, and technical reporting skills. Valid driver's licence and ability to travel to job sites around the Chicago area . Preferred Qualifications Niagara N4 Certification Experience in regulated environments (GMP, FDA, pharmaceutical manufacturing) Strong IT/networking knowledge (IP addressing, switches, VLANs, cybersecurity concepts) Prior experience in a lead engineer, senior engineer, or technical authority role What We Offer Competitive senior‑level compensation based on experience Opportunities to influence technical standards and system design approaches Exposure to complex, high‑profile projects across the Chicago region Professional development and certification support Company vehicle or mileage reimbursement (depending on employer) Comprehensive benefits package (dependent on employer policy) Get job alerts Share Copied to clipboard Related roles Senior PE Geotechnical Engineer

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