> Markdown version of [/jobs/ext/4025935-applications-engineer](https://www.wearedevelopers.com/jobs/ext/4025935-applications-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Applications Engineer

- **Company:** Espo Corporation
- **Location:** Joliet, IL, United States
- **Salary:** $70,000.0 - $85,000.0
- **Contract:** Permanent contract
- **Skills:** AutoCAD, Computer Programming, Microsoft Visio, Modbus, Network Architecture, Metasys, Tridium Niagara Building Automation Framework, Bacnet, DESIGO Building Automation
- **Published:** October 30, 2026
- **Apply:** https://www.juju.com/job/15_6b721a84

## About the Role

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.

## Description

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., 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.