Senior Engineer – Motors, Controls & PLC Software (HVAC)

Job Title: Senior Engineer Motors Controls & PLC Software (HVAC)

Location: Bethlehem PA 15017

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)

Client: Flowserve

Job Description:

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 LonWorks Profibus Profinet and Ethernet/IP
• Support integration with BMS/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

• Bachelors or masters 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 LonWorks 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