We are seeking a skilled and dependable Plant Operator to support the operation and maintenance of a large commercial facility in Northern VA, (Fairfax).

Schedule- Available shifts

• First Shift

  • Hours: 6:00 AM – 2:30 PM

  • Days: Wednesday – Sunday

• Second Shift

  • Hours: 2:00 PM – 10:30 PM

  • Days: Sunday – Thursday

• Third Shift

  • Hours: 10:00 PM – 6:30 AM

  • Days: Saturday – Wednesday

Position Summary
Operate, monitor, and maintain central utility plant equipment to support safe, reliable building operations. Responsibilities include boilers, chillers, cooling towers, pumps, generators, and diesel fuel systems. Ensure accurate documentation and adherence to safety and compliance requirements.

Key Responsibilities

• Operate and monitor boiler systems; support basic boiler water chemistry and treatment activities.
• Operate and monitor chiller systems, including cooling towers, condenser/chilled water pumps, and related equipment.
• Perform routine generator operational checks and maintain basic generator run logs.
• Support diesel fuel operations for dual-fired equipment, including tank inspections and familiarity with equipment controls/monitoring.
• Utilize BAS to monitor equipment status, alarms, and trends; Siemens Desigo experience is a plus.
• Document rounds, readings, and operational activities per site standards.

Preferred Qualifications

• Experience operating boilers and/or chiller plant systems in a commercial/industrial environment.
• Working knowledge of boiler operations and basic chemistry concepts.
• Basic generator run log knowledge and documentation experience.
• Experience supporting diesel fuel systems and tank inspections for dual-fired equipment.
• BAS operational experience (monitoring, alarm response, basic navigation).

Required Qualifications

• DC 3rd Class Engineer license
• EPA 608 (Universal CFC)

EOE, including disability/veterans

Complete Building Services (CBS) is a company that is passionate about the operation and maintenance of buildings/facilities in the commercial and government sectors. CBS is the largest division of The Donohoe Companies, Inc. - Washington DC's most established real estate company. At CBS, we celebrate and empower our talented employees - and it shows as we have been ranked by the Washington Business Journal as the "Best Place to Work" multiple times. 

Perks & Benefits 

We offer a full slate of benefits, including competitive salaries, medical, dental, vision, life and disability coverages, FSA, flexible vacation, commuter benefits, and a 401k plan with a match. And...we offer some not-so-standard, extra great benefits, including tuition reimbursement for education/certifications, employee discounts programs (including hotels and our vendor's products), and an Employee Assistance Program that offers free financial consultants, therapists, and lawyers. We value diversity and believe in forming teams in which everyone can be their authentic self is the key to our success. Come join us, and find out what the best work of your career could look like for you.