Building Systems Mechanic

Salary: See Position Description
Location : Clayton - St. Louis County, MO
Job Type: Full-Time
Job Number: 2026-00035
Department: Transportation and Public Works - Facility Management
Opening Date: 06/15/2026
Closing Date: 7/31/2026 11:59 PM Central


Description
St. Louis County Department of Transportation and Public Works is currently hiring to fill vacancies on their Building Maintenance team at their complex in Clayton, Missouri. The role, Building Systems Mechanic, will perform mechanical and maintenance work on a journeyman level in an assigned area of specialization.

The hourly starting salary is between $21.49 - $25.79 and will be based on your experience and qualifications.
In addition, we offer a comprehensive benefits package and a generous Paid Time Off (PTO) policy. To learn more about these and other County benefits, please visit:


St. Louis County Government is a qualified agency for the Public Service Loan Forgiveness program managed by the Federal Government. For more information regarding this program, please visit:

Examples of Duties

• Provide maintenance support and repair for County facilities
  • Perform electrical maintenance, repair and installation work associated with conduit and cable runs, switchgear and panels, electronic instruments and control equipment, motors, security and fire protection equipment, lighting, gas and electric heaters, refrigerators and laundry appliances, chillers and boilers, and generators and transformers
  • Perform plumbing/pipefitting maintenance, repair and installation associated with plumbing fixtures and assemblies; PVC, copper, cast iron, other metal and glass piping; boilers and chillers; hot water generators; and water treatment systems
• Perform HVAC and mechanical maintenance, repair and installation associated with system controls; boilers and chillers; commercial and residential-type HVAC systems; food preparation and storage equipment; material handling equipment; confinement systems; power generation and filtering equipment; and water treatment equipment
• Perform such additional duties, with the required abilities and under the indicated working conditions and environment, as may properly be required of a position in this job class including asbestos material remediation/abatement and hazardous material/waste handling
  • Perform custodial tasks associated with the care and cleaning of County facilities
  • Remove snow and ice
• Perform other duties as required or assigned

Minimum Qualifications
Building Systems Mechanic :

• Graduation from Technical School or completion of a formal apprenticeship in a skilled building systems trade
• At least three years of related experience; or any equivalent combination of training and experience
• A current, valid driver's license is required

EQUIPMENT USED: Automobile, van, dump truck outfitted with a snowplow and salt spreader; band saw; broom; come along; computer; drill press; drills; electric arc welder; grinder, HVAC tools (i.e. refrigeration gauges, vacuum pump, leak detector, temperature sensing monitor); manlift; pipe cutter and threading machine. Power equipment; propane and acetylene torches; soldering equipment; hand tools; measures and levels.

WORKING CONDITIONS: Balance, bend at waist; climb or work on or from manlifts, scaffolding, ladders, and stairs; exposure to dust/dirt, fumes and hazardous materials, crawl, kneel, lift, push/pull, reach above shoulder level, squat, stoop; stand or walk for long periods, stoop, walk for long periods; walk on uneven ground; work in extreme temperatures (heat/cold) and out of doors in inclement weather.
Additional Information

SELECTION AND APPOINTMENT : A selection committee will evaluate the qualifications of each applicant which will include recentness and appropriateness of the applicant's education and experience, answers to the supplemental questions, results of employment references investigated and any other appropriate information available.

The selection committee will admit to the interview only those persons who possess the most job-related qualifications and may establish admittance criteria beyond the minimum qualifications stated above. The interview will comprise 100% of the applicant's earned grade. A candidate must earn a qualifying grade of 70 or more on the interview to be eligible for appointment. After initial interviews with the selected candidates are conducted, an email will be sent to the address on file with instructions on how to complete and submit a Conviction Questionnaire. Candidates have 3 days to complete the required questionnaire.


The five top ranking candidates, based on the final grade, will be certified to the Department Director/Appointing Authority who will make the final decision.

All applicants conditionally offered a merit position will be required to submit to urinalysis to screen for illegal drug use prior to appointment. Screening will be performed by a reputable clinical laboratory. The cost of screening will be covered by the County.


In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification form upon hire.
HOW TO APPLY : Applicants interested in applying for this position should visit our website at . We only accept on-line applications.

EQUAL EMPLOYMENT OPPORTUNITY POLICY : The policy of the Civil Service Commission of St. Louis County is to support fair and equitable employment opportunities for all persons regardless of race, color, religion, sex, national origin, age, disability, sexual orientation, gender identity, marital status, veterans' status or political affiliation. Call the Division of Personnel at View phone number on click.appcast.io for more information on this policy.

St. Louis County
Division of Personnel, 7th Floor Clayton, MO 63105
View phone number on click.appcast.io
Relay MO 711 or View phone number on click.appcast.io

An Equal Opportunity Employer Fax: View phone number on click.appcast.io

St. Louis County offers its employees many excellent benefits with paid medical insurance, 20 days of PTO (paid time off) the first year and increasing with seniority, and 11-12 paid holidays. Employees hired for full time employment will participate in the St. Louis County retirement plan where they contribute 4% of their salary to the defined benefit plan with vesting after 7 years. Other benefits include: paid life insurance, a credit union, 457 Deferred Compensation Plan, pre-tax premium pay plan, dependent care and medical expense reimbursement plans, and short and long term disability insurance.

In addition to these benefits, as of January 1, 2023, St. Louis County approved up to 480 hours of paid parental leave for eligible employees welcoming new children, either by birth or adoption. The employee can also take up to 80 hours of leave for prenatal care and up to 80 hours for care of the child within the first year.

Please click to view all of our benefits.
01


Have you graduated from technical school or completed a formal apprenticeship in a skilled building systems trade? Please ensure your application reflects this if the answer is "Yes."

• Yes
• No

02


Do you have at least three years of related work experience in a skilled building systems trade?

• Yes
• No

03


Do you possess a current, valid driver's license?

• Yes
• No

04


Has your driver's license ever been suspended or revoked? (If yes, please explain include dates)
05


How many moving violations have you had in the last three years?
06


Why are you interested in this position of Building Systems Mechanic?
07


How does your work experience and education/training qualify you for this position?
08


Describe a maintenance task you completed that required work across at least two of the following areas: electrical, HVAC/mechanical, or plumbing/pipefitting.
09


Explain a situation where you identified a potential hazard (e.g., suspected asbestos, chemical spill, hot-work or confined space risk).
10


Outline how you would prepare a county facility for winter operations while maintaining custodial standards.
11


Are you able to perform the essential functions of this position such as bending, lifting, standing, walking, etc.?

• Yes
• No

12


Please provide any previous work experience you have had with St. Louis County Government including roles you held and the dates of employment. Further, please explain the reason(s) for your departure from the organization.If this does not apply to you, simply enter N/A.
Required Question