Senior HVAC System Technician

General Statement of Job Under limited direction, this position is responsible for the advanced operation, diagnostics, maintenance, repair, optimization, and lifecycle support of complex mechanical systems serving City-owned facilities. The incumbent serves as the City’s subject‑matter expert for commercial and institutional HVAC systems, including large‑capacity chillers, cooling towers, boilers, pumps, air handling units, variable‑air‑volume (VAV) systems, energy recovery systems, and integrated Building Automation Systems (BAS). The City maintains a large and diverse portfolio of facilities, including administrative offices, public safety buildings, recreation centers, community facilities, and specialized infrastructure housing complex mechanical systems. Many of these facilities rely on aging or highly specialized HVAC equipment that requires advanced troubleshooting capabilities, system‑level diagnostics, and energy performance optimization expertise. This position performs comprehensive system diagnostics; monitors, programs, and optimizes BAS platforms; oversees preventive and predictive maintenance programs; supports capital improvement projects; coordinates specialized contractors; and ensures compliance with mechanical codes, life safety standards, and City procedures. Work is performed with a high degree of independence and technical judgment. Provides technical guidance and on‑the‑job training to other technicians. Performs related work as directed. Essential Job Functions Diagnosing complex mechanical, electrical, and electronic malfunctions in HVAC‑R systems (chillers, RTUs, boilers, air handling units) and determining root causes without manufacturer support. Performing major repairs, including the replacement of compressors, motors, valves, and bearings, to bring equipment to OEM specifications. Executing high‑level maintenance, including testing and balancing air ducts, chemical water treatment for boilers/chillers, and evaluating system performance to minimize downtime. Configuring, programming, and troubleshooting Energy Management Systems (e.g., BACnet, Modbus) to optimize building comfort and energy efficiency. Training junior technicians, reviewing their work for quality, and providing technical guidance on complex projects. Interpreting complex blueprints, schematics, and layouts to plan installations, estimate material/labor costs, and manage contractors. Ensuring all work complies with EPA regulations (refrigerant management), OSHA standards, and local building codes. Maintaining detailed digital or paper records of repairs, maintenance, and parts usage, often using CMMS (Computerized Maintenance Management Systems). Responding to emergency situations to confine, resolve or prevent injurious or otherwise hazardous conditions as directed. Performing duties as assigned/necessary which are related, or logical in assignment to the position. Minimum Qualifications Education and experience: High School Diploma or GED and four (4) years of HVAC trade experience, which must include performing highly complex facilities or industrial electronic HVAC control work, experience as a team leader, supervisor, or completion of supervisory training; or an equivalent combination of education, training, and experience that provides the required knowledge, skills, and abilities and meets the DPBR experience criteria for Class A/B licensure eligibility. Licenses and Certifications Must possess and maintain a valid State of Florida Driver License. Must possess one of the following HVAC related credentials at time of application: Florida Certified Air Conditioning Contractor License (Class A or Class B) issued by the Florida Department of Business and Professional Regulation (DBPR) or EAP Universal Certification (also known as EPA 608 Universal). Candidates must submit to and successfully pass a national fingerprint‑based criminal history background check coordinated by the Kissimmee Police Department in accordance with Criminal Justice Information Systems (CJIS) standards. Candidates must complete and maintain Criminal Justice Information Systems Security Awareness Training through CJIS Online and recertify every two (2) years as coordinated by the Kissimmee Police Department. Must possess, or obtain within six (6) months of appointment, the current FEMA IS‑100, IS‑200, and IS‑700 Incident Command System certifications. Knowledge, Skills and Abilities Ability to understand and follow written and oral instructions. Ability to interpret a variety of instructions in written, oral, diagram, or schedule form. Ability to lead and carry out assignments with minimal instructions. Ability to adhere to prescribed routines and practices. Working knowledge of packaged control systems such as Trane Tracer Ensemble or its industry equivalent. Ability to proficiently read mechanical, electrical and controls blueprints. Ability to perform duties with a professional and cooperative work ethic. Ability to climb, reach, bend, stoop, kneel, sit and stand for extended periods of time; ability to lift up to 50 pounds. Ability to work at heights up to 12 feet. Ability to work in temperatures exceeding 100 degrees for extended periods of time. Ability to withstand exposure to dust, mold, fiberglass, and various chemicals. Ability to establish and maintain effective working relationships and communications with department management, City employees, and the public. Physical Demand Requirements Physical demand: Heavy. 100 pounds maximum lifting. Frequent (up to 2/3 of the work time) lifting, carrying up to 50 lbs. Expressing or exchanging ideas by spoken word or perceiving sound by ear. Good eyesight for protection or safety of self and others. Physical demand requirements are in excess of medium work. Responsibilities Maintains high standards of accuracy in exercising duties and responsibilities. Exercises immediate remedial action to correct any quality deficiencies that occur in areas of responsibility. Maintains high quality communication and interaction with internal and external entities with whom the position interacts. Performs described Essential Functions and related assignments efficiently and effectively in order to produce quantity of work which consistently meets established standards and expectations. Assumes responsibility for completing assigned work. Completes assigned work within deadlines in accordance with directives, policy, standards and prescribed procedures. Maintains accountability for assigned responsibilities in the technical, human and conceptual areas. Exercises analytical judgment in areas of responsibility. Identifies issues or situations as they occur and specifies decision objectives. Identifies or assists in identifying alternative solutions to issues or situations. Implements decisions in accordance with prescribed and effective policies and procedures and with a minimum of errors. Seeks expert or experienced advice where appropriate and researches issues, situations and alternatives before exercising judgment. Working Conditions Works indoors and outdoors in all types of weather. Has knowledge of applicable occupational hazards and safety precautions. Is able to work in uncomfortable physical conditions, including exposure to excessive heat or cold, wetness, humidity, odors, smoke, toxic agents, noise, vibrations, dusts, pollen, machinery hazards, electric currents, etc. Other It is understood that every incidental duty connected with operations enumerated in the job description is not always specifically described, and employees, at the discretion of the City, may be required to perform duties not within their job descriptions. #J-18808-Ljbffr City of Kissimmee