Senior Engineer Motors,Controls & PLC Software; HVAC Job Bethlehem area,Pennsylvania USA,Engineering

Position: Senior Engineer Motors, Controls & PLC Software (HVAC)
Job Title: Senior Engineer Motors, Controls & PLC Software (HVAC)
Location:
Bethlehem, PA
Onsite/ Hybrid/ Remote: Onsite/Hybrid at Bethlehem (There is a flexibility of Remote and sometime need to be in Bethlehem. Some Travel between Bethlehem & Texas may also be needed)

The Senior Engineer Motors, Controls & PLC Software (HVAC) is responsible for the design, development, programming, testing, and commissioning of motor control systems and PLC-based control software for HVAC equipment and systems. This role plays a key part in delivering reliable, energy efficient, and compliant HVAC control solutions across commercial and industrial applications.

Key Responsibilities

Control Systems & PLC Software
Design, develop, and maintain PLC software for HVAC systems including chillers, AHUs, FCUs, pumps, and compressors
Develop control logic for temperature, pressure, flow, humidity, and energy optimization
Program and troubleshoot PLCs (e.g., Siemens, Rockwell/Allen Bradley, Schneider, or equivalent)
Implement communication protocols such as Modbus, BACnet, Lon Works, Profibus, Profinet, and Ethernet/IP
Support integration with Client/EMS
Motors & Drives
Design and validate motor control strategies for AC/DC motors, EC motors, VFDs, and soft starters
Select and specify motors, drives, and protection devices based on application requirements
Optimize motor performance for energy efficiency, reliability, and compliance with HVAC standards
Troubleshoot motor and drive-related field issues
Controls & Hardware
Design control panel architectures, I/O mapping, wiring schematics, and control hardware layouts
Review and approve electrical drawings, BOMs, and technical documentation
Ensure compliance with applicable standards (IEC, UL, IS, NEC, CE, etc.)
Testing & Commissioning
Perform software testing, FAT, SAT, and on-site commissioning
Diagnose and resolve system-level issues during testing and field deployment
Support root cause analysis and corrective actions
Collaboration & Leadership
Work closely with mechanical, electrical, firmware, and system engineering teams
Provide technical guidance and mentoring to junior engineers
Interface with customers, suppliers, and cross-functional stakeholders

Required Qualifications

Bachelor s or master s degree in electrical engineering, Electronics, Mechatronics, or related field
7 12 years of experience in HVAC controls, motor systems, or industrial automation
Strong hands-on experience with PLC programming and debugging
Solid understanding of motor control theory, VFDs, and HVAC system operation
Experience with HVAC control strategies and energy optimization

Technical Skills

PLC Programming:
Ladder Logic, Function Block, Structured Text
Motors & Drives:
Induction motors, BLDC/EC motors, VFD tuning
HVAC Controls: PID tuning, sequencing, alarms, safety interlocks
Communication: BACnet, Modbus RTU/TCP, Lon Works, CAN, Ethernet
Tools: PLC IDEs, HMI/SCADA tools, simulation and testing tools

Preferred Qualifications

Experience with embedded control systems or hybrid PLC embedded architectures
Exposure to global HVAC standards and certification processes
Experience with cybersecurity concepts for industrial control systems
Prior experience in product development lifecycle for HVAC equipment

Soft Skills

Strong analytical and problem-solving skills
Ability to work independently and in cross-functional teams
Clear communication and technical documentation skills
Customer-focused mindset with attention to quality and reliability

Diverse Lynx LLC is an Equal Employment Opportunity employer. All qualified applicants will receive due consideration for employment without any discrimination. All applicants will be evaluated solely on the basis of their ability, competence and their proven capability to perform the functions outlined in the corresponding role. We promote and support a diverse workforce across all levels in the company.

Senior Engineer Motors, Controls & PLC Software; HVAC