Sr. Special Hazards Technician

About M.C. Dean

M.C. Dean is Building Intelligence. We design, build, operate, and maintain cyber-physical solutions for the nation’s most mission-critical facilities, secure environments, complex infrastructure, and global enterprises. With over 7,000 employees, our capabilities span electrical, electronic security, telecommunications, life safety, automation and controls, audiovisual, and IT systems. Headquarters in Tysons, Virginia, M.C. Dean delivers resilient, secure, and innovative power and technology solutions through engineering expertise and smart systems integration.

M.C. Dean is Building Intelligence. We design, build, operate, and maintain cyber-physical solutions for the nation’s most mission-critical facilities, secure environments, complex infrastructure, and global enterprises. With over 7,000 employees, our capabilities span electrical, electronic security, telecommunications, life safety, automation and controls, audiovisual, and IT systems. Headquarters in Tysons, Virginia, M.C. Dean delivers resilient, secure, and innovative power and technology solutions through engineering expertise and smart systems integration.

Our people are passionate about engineering innovation that improves lives and drives impactful change. Guided by our core values agility, expertise, and trust we foster a collaborative and forward-thinking work environment. At M.C. Dean, we are committed to building the next generation of technical leaders in electrical, engineering, and cybersecurity industries.

The Senior Special Hazards Systems Technician is responsible for the installation, programming, testing, commissioning, troubleshooting, inspection, and service of complex special hazards fire protection and life safety systems. This position serves as a senior technical resource in the field and is expected to independently diagnose system issues, execute system modifications and upgrades, support project delivery, and provide technical guidance to other technicians.

The role requires strong working knowledge of fire alarm and special hazards releasing systems, applicable NFPA requirements, manufacturer-specific equipment, electrical drawings, sequence-of-operations documentation, and testing/commissioning procedures.

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 and maintain a Top-Secret clearance required.

• Install, program, troubleshoot, service, test, and commission special hazards fire suppression and releasing systems, including clean-agent, pre-action, deluge, and other specialty fire protection systems.
• Perform advanced troubleshooting of releasing panels, fire alarm control panels, detection circuits, notification circuits, releasing circuits, supervisory devices, power supplies, network communications, and associated field equipment.
• Program and configure system control equipment in accordance with approved drawings, specifications, sequence of operations, manufacturer requirements, and applicable codes.
• Perform functional testing of system interfaces, including detection, releasing, abort, manual release, HVAC shutdown, damper control, door release, equipment shutdown, sprinkler supervisory devices, and fire alarm system interfaces.
• Support acceptance testing, integrated system testing, commissioning, and customer/AHJ demonstrations.
• Perform preventive maintenance, inspections, testing, deficiency correction, emergency service, and system repairs.
• Read and interpret construction drawings, riser diagrams, wiring diagrams, control schematics, specifications, cause‑and‑effect matrices, and sequence‑of‑operations documents.
• Identify field conditions that differ from approved design documents and communicate required changes to project management and engineering.
• Document deficiencies, troubleshooting findings, repairs, testing results, system modifications, and recommended corrective actions.
• Coordinate field activities with customers, project managers, engineering personnel, subcontractors, other…