Software Engineer II

Company Overview

We are a global leader in HVAC and consumer electronics solutions. Our North American R&D and engineering team works closely with Global HQ in South Korea to develop and validate advanced HVAC control systems tailored to the North American market. We are seeking a mid-level engineer to lead system integration testing, controls validation, and technical coordination between HQ and U.S. operations.

Position Summary

The HVAC Controls & System Integration Engineer will serve as a subject matter expert for proprietary control systems and integration solutions. This role is responsible for system integration testing, lab and field validation, regulatory awareness, and cross-functional collaboration to ensure successful deployment of HVAC control solutions in the North American market.

This position requires both strong technical depth and the ability to operate in a consultative and leadership capacity across internal teams, distribution partners, and Global HQ.

Key Responsibilities

1. System Integration & Technical Leadership

• Lead system integration testing for HVAC control systems, gateways, and cloud-connected platforms.
• Establish and manage lab environments to replicate field conditions and troubleshoot system-level issues.
• Capture and analyze communication logs (BACnet, Modbus, RS485, UART, etc.) for root cause analysis.
• Support integrated validation of cloud-based HVAC control platforms.

1. Controls Communication & Interface Optimization

• Verify Point Lists and communication interfaces between HVAC equipment and BAS systems.
• Troubleshoot serial communication protocols (RS485, Modbus, BACnet).
• Optimize system interoperability and compatibility across devices and networks.

1. HQ & Cross-Regional Collaboration

• Serve as primary technical liaison between North America and Global HQ (Korea).
• Communicate technical findings, market needs, and validation results clearly and effectively in Korean and English.
• Proactively gather knowledge from HQ to strengthen U.S. operations.

1. Product Application & Pre-/Post-Sales Support

• Support pre-sales technical assessments and on-site control system evaluations.
• Develop application guidelines, technical documentation, and training materials.
• Deliver product and application training to internal teams, reps, and partners.
• Provide consultative support to distributors and end users.

1. Industry & Regulatory Awareness

• Monitor North American HVAC regulations and standards (e.g., Title 24, AHRI).
• Track industry trends and evolving control technologies.
• Identify technical opportunities for market expansion and product improvement.

Required Qualifications

• Bachelor’s degree in Mechanical Engineering, Electrical Engineering, Computer Engineering, Computer Science, or related field.
• 3–5+ years of experience in HVAC controls, system integration, or related controls industry.
• Hands-on experience with system integration testing.
• Strong troubleshooting knowledge of hardware and software systems.
• Experience with serial communication protocols (RS485, Modbus, BACnet).
• Ability to set up lab environments including electrical wiring and PCBA-level testing.
• Fluent Korean language skills (required for HQ collaboration).
• Strong analytical, debugging, and problem-solving skills.
• Eligible to work in the U.S. without sponsorship.

Preferred Qualifications

• Experience with VRF or ductless mini-split systems.
• Experience with embedded systems or microcontrollers.
• Familiarity with cloud-connected HVAC platforms.
• Programming experience (C, C#, or similar).
• Experience developing technical documentation or training materials.
• Experience with mobile control applications (e.g., LG ThinQ or similar platforms).