Control Technician - TS​/SCI - South Korea

Overview

M.C. Dean is Building Intelligence. We design, build, operate, and maintain cyber-physical solutions for the nation’s most recognizable mission critical facilities, secure environments, complex infrastructure, and global enterprises. The company’s capabilities include electrical, electronic security, telecommunications, life safety, automation and controls, audio visual, and IT systems. M.C. Dean is headquartered in Tysons, Virginia, and employs more than 5,800 professionals who engineer and deploy automated, secure, and resilient power and technology systems;

and deliver the management platforms essential for long-term system sustainability.

Why join M.C. Dean? Our people are inspired by the way engineering and innovation enhance customer outcomes, improve lives, and change the world for the better. We are driven by our core values of agility, expertise, and trust.

Clearance Requirement: Applicants selected will be subject to a government security investigation and must meet eligibility requirements, including U.S. Citizenship, for access to classified information;Ability to obtain a Top-Secret/SCI Clearance required.

The Control Technician 2 is responsible for the operations, maintenance, and technical support of existing building automation and control systems. This role ensures that all BAS equipment, sensors, actuators, and controllers are functioning properly to optimize facility performance, energy efficiency, occupant comfort, and system reliability. The technician works closely with facility engineers, operators, and management to monitor, troubleshoot, and maintain BAS systems across the site.

• Operations & Monitoring
  • Monitor BAS systems to ensure proper performance of HVAC, lighting, and other facility control systems.
  • Review system alarms, trends, and performance reports to proactively identify issues.
  • Maintain accurate system documentation, graphics, and control sequences.
• Maintenance & Troubleshooting
  • Perform routine inspections, calibrations, and preventive maintenance on BAS hardware (controllers, sensors, actuators, and network components).
  • Diagnose and resolve BAS-related issues, including communication faults, control loop failures, and equipment interface problems.
  • Repair or replace defective components and coordinate with OEM/vendor support when necessary.
• System Optimization
  • Adjust programming, setpoints, and schedules to improve energy efficiency and meet operational requirements.
  • Implement system updates and minor programming changes under the guidance of engineers.
  • Support continuous commissioning and system performance improvement efforts.
• Documentation & Reporting
  • Maintain O&M logs, service records, and update as-built drawings and control sequences.
  • Provide system performance reports and recommend corrective or optimization actions.
  • Ensure compliance with safety regulations, company standards, and operational procedures.
• Support & Coordination
  • Collaborate with facility managers, engineers, and contractors on BAS projects, upgrades, and expansions.
  • Train and assist facility operations staff in the proper use of BAS interfaces and controls.
  • Participate in on-call rotation and respond to after-hours BAS issues when required.

• High School Diploma/ GED required
• 3+ years of experience in BAS controls, HVAC O&M, or related field required.
• Applicants selected will be subject to a government security investigation and must meet eligibility requirements, including U.S. Citizenship, for access to classified information;Ability to obtain a TS/SCI Clearance required.

Certifications:

• Obtain, at the Company’s expense, a CPR and First Aid certification within six (6) months of hire and maintain this certification status while employed by M.C. Dean, Inc.
• Pass a background investigation and drug test.
• Strong knowledge of BAS systems (e.g., Siemens, Johnson Controls, Honeywell, Trane, Schneider, or similar, Metasys).
• Familiarity with control sequences, system architecture, and integration with HVAC/mechanical equipment.
• Ability to read and interpret wiring diagrams, mechanical drawings, and control schematics.
• Knowledge of and ability to interpret control circuits, schematics,…