Fire Alarm & Low Voltage Engineer​/Estimator | Southern California Commercial El

About Us

One Electric is a fast-growing commercial electrical contractor building the future of power and technology infrastructure across Southern California. We’re scaling rapidly and looking for high-drive talent committed to excellence, ownership, and delivering high-quality work.

We take a modern, systems-driven approach to construction—prioritizing planning, technology, and precision execution. If you want to build meaningful projects, grow with a scaling company, and have a real impact, this is the place for you.

We are seeking a skilled Fire Alarm & Low Voltage Engineer/Estimator to lead design, takeoffs, submittals, and estimating for fire alarm and low-voltage systems across commercial projects. This role blends technical knowledge with estimating accuracy and field coordination.

• Design and engineer fire alarm & low-voltage systems to code and project specs
• Prepare detailed takeoffs, BOMs, and labor estimates
• Work with plans, specs, submittals, and shop drawings
• Coordinate with GC, AHJ, and vendors for approvals and clarifications
• Select equipment, devices, and technologies based on project requirements
• Prepare RFI’s, system risers, wiring schedules, and panel layouts
• Assist PMs and field team during installation and commissioning
• Maintain cost databases, unit pricing, vendor quotes, and labor factors
• Review addenda and value-engineering opportunities
• Participate in pre-construction meetings and turnover packages

• 3+ years in fire alarm/low-voltage design and estimating (commercial)
• Proficient with NFPA 72, NEC, and local fire codes
• Strong skills in low-voltage plans, CAD, design software, and submittals
• Experience with commercial projects (TI, office, retail, industrial, institutional)
• Accurate takeoff and estimating skills for materials & labor
• Preferred: NICET certification, vendor/manufacturer training (e.g., Notifier, EST, FCI, Silent Knight)
• Ability to work in a fast-paced environment and manage multiple bids
• Strong communication and documentation skills
• Must be local to the area to be considered.

• Bluebeam
• AutoCAD / Revit
• Estimating platforms (Accubid)
• Procore

• Competitive salary & performance-based bonuses
• Rapid growth path in a scaling construction organization
• Opportunity to build and lead a low-voltage division
• Supportive, high-performance culture
• Health benefits, PTO,