Orange County Sanitation District

Lead Mechanic (Mechanical Maintenance)

Onsite - Fountain Valley , CA
Application Deadline: 6/5/24

Orange County Sanitation District

Lead Mechanic (Mechanical Maintenance)

SALARY $49.69 – $60.41 Hourly


JOB TYPE Full-time

JOB NUMBER 442/461

DEPARTMENT Operations & Maintenance

DIVISION Plant 1 Maintenance

OPENING DATE05/21/2024

CLOSING DATE 6/5/2024 5:00 PM Pacific


What do you value in your next job?

At the Orange County Sanitation District our Core Values form the framework of our organization and reinforce our professional work ethic. If the following values ring true with you, we’d love to invite you to explore our career opportunities further.

Integrity, Inclusion, Honesty, and Respect

We aspire to the highest degree of integrity, inclusion, honesty, and respect in our interaction with each other, our suppliers, our customers, and our community. We strive to demonstrate these values in our actions, commitments, and service.

Leadership, Teamwork, and Problem Solving

We lead by example, acknowledging the value of our resources and using them wisely to achieve our mission. We strive to reach OC San goals through cooperative efforts and collaboration with each other and our constituencies. We work to solve problems in a creative, cost-effective, and safe manner, and we acknowledge team and individual efforts.

Customer Service, Transparency, and Accountability

We are committed to acting in a timely, accurate, accessible, and transparent manner through excellent customer service. We are committed to act in the best interest of our internal and external stakeholders.

Resiliency, Innovation, and Learning

We continuously develop ourselves, enhancing our talents, skills, and abilities. We recognize that only through personal growth and development will we progress as an agency and as individuals.


We are committed to providing a safe work environment. We will demonstrate leadership, promote individual accountability, and participate actively in the advancement of our health and safety practices. 

OC San is currently looking to fill the role of a Lead Mechanic (Mechanical Maintenance).

Under direction or general supervision, leads, oversees, and participates in the work of staff responsible for the maintenance, repair, service, and troubleshooting of mechanical equipment and machinery in wastewater treatment plants and related facilities.

Specifically, the Lead Mechanic will oversee, lead, and participate in the maintenance and repair of process equipment in the plant, including but not limited to boilers, pumps, mobile and stationary engines, air and gas compressors, evaporators, scrubbers, blowers, bar screens, augers, centrifuges, hydraulic systems, and conveyor belts. The successful candidate will be able to adhere to established policies and procedures; perform technical and complex tasks utilizing specialized industry techniques and tools (e.g., calipers, verniers, micrometers, torque wrenches) relative to the assigned area of responsibility; and perform difficult and complex corrective, preventive, and predictive mechanical maintenance using advanced methods. In addition, the Lead Mechanic will perform audits for proper mechanical maintenance, repair work, and safety methods; perform safety procedures; and read schematic drawings.

Other duties will include providing technical feedback for performance evaluations of assigned staff; reviewing work orders for work performed; assigning and coordinating work assignments; planning and implementing maintenance projects; and training, coaching, and mentoring staff. This Lead Mechanic will be part of a team that performs high-precision, world class machinery repair of equipment used in the wastewater industry.

When assigned to Mechanical Maintenance:

  • Leads and participates in repair functions and complete rebuilds on various wastewater treatment plant equipment and related components such as gear boxes and gear reducers, mechanical and hydraulic variable drive assemblies, grinders assemblies, grit assembly, regulators, valves, and related equipment. 
  • Leads and participates in disassembling all machinery in pump shop to carefully evaluate for required machine work and parts and cross-references OEM manual to warehoused parts.
  • Oversees the test runs of equipment on specially designed test stands to ensure proper operation; tests mechanical seals for leaks, either hydrostatically or pneumatically; reviews reassembly of machinery and ensures application of tags with installation instructions. 
  • Leads and participates in designing and fabricating special tools for installation and removal of different components when standard tools are not applicable.

Qualifications & Requirements


  1. High school diploma or G.E.D. supplemented by specialized training or coursework such as relevant trade school in mechanical equipment maintenance and repair, or a related field.
  2.  Five (5) years of increasingly responsible experience applying preventive and corrective mechanical maintenance skills on field equipment and/or automotive equipment, rebuild facilities, and collection systems.
  3. A valid California Class C Driver’s License


  • Grade III Mechanical Technology Certificate from the California Water Environment Association (CWEA).
  • Certified Maintenance & Reliability Technician (CMRT) certification.
  • Industry related certification is desirable.

Recruitment & Selection Process

Vacancies: 2

  (an eligible list may be established for future vacancies)   

Apply online at: 

APPLICATION FILING DEADLINE: Wednesday, June 5th, 2024, 5:00 P.M. PST

Hiring Salary Range: $49.69 – $54.79/Hour

(Starting salary will be within this range based upon qualifications)

Supplemental Information

Physical Demands

  • Mobility to work in the field; to sit, stand, and walk on level, uneven, or slippery surfaces; frequently reach, twist, turn, kneel, bend, stoop, squat, crouch, grasp, and make repetitive hand movement in the performance of daily duties; to climb and descend ladders, to operate varied hand and power tools and equipment, and to operate a motor vehicle and visit various OC San sites, projects, and/or meetings.
  • Perform moderate to heavy physical work; to lift, carry, push, and pull materials and objects averaging a weight of 51 pounds or heavier weights, in all cases with the use of proper equipment and/or assistance from other staff.
  • Work requires entry into confined spaces and the use of confined entry equipment and protective safety equipment.
  • Vision to inspect and operate equipment.
  • Field work requiring frequent walking in operational areas to identify problems or hazards.
  • Finger dexterity to operate and repair tools and equipment.

Environmental Elements

  • Field work in and around facilities with exposure to loud noise levels, cold and hot temperatures, inclement weather conditions, road hazards, vibration, confining workspace, heights, chemicals, mechanical and/or electrical hazards, hazardous physical substances and fumes, dust, and air contaminants.
  • Employees may interact with upset staff and/or public and private representatives in interpreting and enforcing departmental policies and procedures.

Other Requirements

  • May be required to work extended hours, including nights, weekends, and holidays when necessary.
  • Standby and Call Back: Employees in this classification may be required to participate in standby duty and are subject to call back, which may include nights, weekends and 24-hour emergency call out with little or no notice. Any employee designated to serve on standby, or report to an emergency, and refuses to do such, shall be subject to disciplinary action up to and including termination.
  • Probationary Period: All OC San employees, except classifications considered “at-will”, are subject to the probationary period provisions as specified in the applicable Memorandum of Understanding, policies, and/or resolutions. Employees who have not yet successfully completed their initial probationary period serve “at-will” and may be released from employment without cause or recourse to any appeal or grievance procedures.
  • Pre-Employment: All employment offers are contingent upon successful completion of OC San’s preemployment process, which includes a background investigation, a physical examination, and a drug screen. 
  • Work Location Assignment: Employees will be assigned to a work location based on business needs which may be located at any/all of OC San locations; this work location may be changed at any time.

Disaster Service Workers

All OC San employees are designated Disaster Service Workers through state law (California Government Code Section 3100-3109). Employment with the OC San requires the affirmation of a loyalty oath to this effect. Employees are required to complete all related training as assigned, and to return to work as ordered in the event of an emergency.

Other Information

For the full range of duties, responsibilities, and essential job functions please review the Classification Specification for this position found on our website.

Applicants must clearly demonstrate, through their application materials, that they meet the minimum requirements as outlined in the job announcement and class specification to receive further consideration. However, meeting the minimum requirements does not guarantee an interview. All properly completed applications will be reviewed, and the most appropriately qualified individuals will be invited to continue in the selection process.

False statements may be cause for disqualification, removal from the eligible list, or discharge from employment. All statements made on applications are subject to investigation and verification.

To ensure your application is accurate and complete, please review the Job Application Guide.

Employment is contingent upon successful completion of OC San’s pre-employment process, which includes a background investigation and a physical examination. For some positions, this may include a drug screen. False statements may be cause for disqualification, removal from the eligible list, or discharge from employment. All statements made on applications are subject to investigation and verification.

Reference Checks will be conducted by OC San to verify employment related information for all potential employees once a contingent job offer is made during the background investigation process. This is done to ensure that individuals who join OC San are well qualified and have a strong potential to be successful in their employment. The extent of the inquiry will depend on the position being applied for, but will at least include:

•  Verification/Reference from current and past employers

•  Confirmation of necessary licenses, certificates, and degrees.

Please have all necessary documentation ready. Additional inquiries may be necessary depending on the position for which you are applying. Human Resources will also schedule a post-offer physical examination once a job offer has been made.

OC San only accepts applications submitted via our online application system. Applications submitted via mail, fax or email will not be accepted.

The provisions of this announcement do not constitute an expressed or implied contract.

Any provision contained in this announcement may be modified or revoked without notice.

Recruiter Information:

Sergio Gonzalez