Job Title: Applications Engineer Location: Joliet, IL An Applications Engineer works within the building automation and controls domain, focusing on designing, developing, and supporting HVAC control systems and related technologies for commercial, institutional, and industrial facilities. Core Responsibilities Design & Development: Translate project requirements and mechanical system specifications into effective Building Automation Systems (BAS) or Direct Digital Control (DDC) solutions. Control Strategy Engineering: Develop control sequences, points lists, network architecture, and system layouts for equipment such as AHUs, VAVs, chillers, boilers, cooling towers, heat pumps, and central plant systems. Component Selection: Choose controllers, sensors, actuators, and other control hardware to meet performance and integration needs. Documentation: Create submittals, bills of materials, control diagrams, and technical project documentation. Integration & Protocols: Assist with integrations using open protocols like BACnet and Modbus. Support & Troubleshooting: Provide technical support, troubleshoot application or system issues, and assist with programming, graphics, startup, and commissioning. Coordination: Work closely with project managers, programmers, technicians, customers, and consulting engineers to ensure solutions meet project goals. Skills & Experience Technical Knowledge: Strong understanding of commercial HVAC equipment, sequences of operation, and control strategies. Software/Systems Skills: Experience with BAS platforms such as Tridium Niagara, Schneider EcoStruxure, Siemens Desigo, Johnson Controls Metasys, or other industry-standard systems. Design Tools: Familiarity with Microsoft Visio, AutoCAD, or similar for creating control diagrams and layouts. Problem-Solving & Communication: Ability to read mechanical drawings, specifications, and control schematics; strong technical communication skills. Context at Our Client Our client offers a full range of building controls, HVAC, electrical, sheet metal, commissioning, and VFD services, with a focus on efficiency, comfort, and energy savings. An Applications Engineer at our client would be part of a multidisciplinary team delivering design-build solutions, ensuring that control systems are optimized for performance, integration, and long-term maintenance. In short: The Applications Engineer at our client bridges the gap between mechanical system design and control software, ensuring that HVAC and building automation systems are engineered to meet specific client needs, integrate seamlessly, and operate efficiently over time. ESPO Corporation www.espocorp.com 630-789-2525 View all open jobs at www.espocorp.com/jobs Leaders in Technical Recruiting & Staffing since 1965 ESPO has a comprehensive benefits package which includes PTO, Group Health and Dental Insurance, and 401k after you have satisfied the necessary waiting periods. We are an Equal Opportunity Employer and value the benefits of diversity in our workforce. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity and expression, national origin, disability, protected Veteran status, or any other attribute or protected characteristic by law. If you need assistance applying, please get in touch with us directly.