BAS Field Technician III

Company: McMillan James Equipment Company
Location: Austin
Posted on: January 14, 2026

Job Description:

Job Description Job Description Job Overview The BAS Field Technician III plays a key role in the installation, startup, programming, and commissioning of complex building automation systems. This position is a senior-level field role responsible for ensuring systems operate as designed, mentoring junior technicians, and providing technical expertise in the field. As a BAS Field Tech III, you’ll work directly with project teams, customers, and commissioning agents to deliver efficient, reliable, and well-integrated control systems — keeping projects on schedule and aligned with MJEC’s commitment to quality and performance. Responsibilities Lead field installation, wiring, programming, and startup of building automation systems (HVAC controls, lighting, and integration projects). Configure and test system components including controllers, sensors, actuators, and networked devices. Commission systems, perform point-to-point checkout, and verify sequences of operation. Troubleshoot complex technical issues and ensure corrective actions are documented and implemented. Mentor and train BAS Field Tech I and II team members, promoting safety, efficiency, and technical growth. Collaborate with project managers, engineers, and customers to clarify design intent and resolve field challenges. Review submittals, drawings, and specifications to ensure proper installation and operation of all control systems. Complete detailed documentation, redlines, and daily progress reports. Support warranty calls, service projects, and ongoing system optimization. Adhere to all MJEC safety policies and ensure compliance with local codes and standards. Qualifications Minimum 5 years of experience in building automation, HVAC controls, or related technical field. Strong knowledge of DDC (Direct Digital Controls), networking, and HVAC system operation. Experience with Siemens, Johnson Controls, Trane, Distech, or similar BAS platforms preferred. Ability to read and interpret mechanical drawings, electrical schematics, and control diagrams. Proficiency with control system programming and commissioning tools. Excellent communication, problem-solving, and customer service skills. Valid driver’s license and clean driving record. Physical Requirements Ability to lift and carry up to 50 lbs. Ability to work in various environments, including confined spaces, attics, crawlspaces, and at heights. Ability to stand, bend, kneel, and climb for extended periods. Work Environment This is a field-based position requiring travel to commercial, institutional, or and industrial buildings. Work hours may vary based on project schedules and may include evenings, weekends, and overtime. Compensation & Benefits Health Insurance: Employer covers employee cost; dependents paid by the employee. Vision and Dental Insurance: Employee-paid. Basic Life Insurance: Employer-provided coverage up to $50,000. Health Reimbursement Account (HRA): Company pays a portion of the medical deductible. 401(k) Plan: Eligible after 1 year of service, with a 4% employer match. Ancillary Insurance options : disability, critical illness, hospital indemnity, accident and more. Paid Time Off (PTO): 15 days annually. Holidays: 9 company-paid holidays. Bonus: Eligibility for annual bonus. Learning: Professional development and career growth opportunities.

Keywords: McMillan James Equipment Company, San Antonio , BAS Field Technician III, Engineering , Austin, Texas