Control Systems Specialist

Delta Diablo | Antioch, CA

Applying to this job will open a new window on the employer's web site to apply there.

Posted Date 6/20/2022

This position will be open until filled. The first review of applications will take place during the week of July 18, 2022.

Salary: $8,586.53 - $10,723.40 Monthly

The Position (One Vacancy)
Working under general supervision in a team environment, the Control Systems Specialist is responsible for installing and maintaining various electronic monitoring, control, and communication equipment, including Programmable Logic Controllers (PLCs), and Human Machine Interface (HMI) screens essential to ensuring the continuous and efficient operation of the District treatment plant, pumping stations, and recycled water facilities. The Control Systems Specialist is responsible for implementation of Supervisory Control and Data Acquisition (SCADA) system projects related to new or modified facilities. This work may include application configuration, application design, graphics development, and other activities in accordance with District policies, procedures, and standards. The Control Systems Specialist also performs routine and complex Electrical/Instrumentation Technician duties and special projects related to the SCADA system as required.


System Administration

  • Serve in lead role and work closely with Engineering, Operations, Maintenance and IT on capital planning efforts for the SCADA Master Plan; provide key input on District's long-range SCADA system and related infrastructure strategies. Prepare recommendations for system and related application upgrades.
  • Determine suitability of new applications and equipment to District uses and needs. Install new or upgrade existing control system equipment and associated electrical connnections.
  • Integrate new applications and modify PLC programs and equipment to optimize plant operations, operator convenience, and off-line tasks; design, fabricate, maintain and install electrical and electronic assemblies to enhance PLC, telemetry, and instrumentation systems.
  • Diagnose telemetry and field instrument problems including identifying source of problems and implement corrective actions.
  • Review and/or create District instrumentation drawings, plans, and specifications for technical content, accuracy, and proper and desirable PLC and SCADA system interface.
  • Maintain and develop (PLC) programs and ladder logic to reflect changes in operations and user needs. Create (HMI) schematics and scripting; work with and train Operations personnel and other staff to make process control and other adjustments as required.
  • Develop documentation related to the design and the use of graphics, applications, procedures, etc. Prepare reports and other special projects as identified, defined, and assigned.

SCADA System Electrical Equipment Repair, Replacement and Maintenance

  • Disassemble, repair, and replace damaged or worn parts.
  • Test, service, rewire, calibrate and adjust, reassemble, reinstall, and return to full operating condition all SCADA system equipment and materials integral to recycled water and wastewater system operations.
  • Assemble and install new equipment components, set up and integrate into existing SCADA system operations.
  • Provide on-the-job instruction to new employees learning electrical, electronic, and instrumentation maintenance and repair work related to the SCADA system.
  • Prepare requests for follow-up SCADA system services/work and enter into service request system. Add repair and replacement information to equipment and work completed records.

System Training and Support

  • Assist staff in the use of the District's SCADA system by checking control loops, validating telemetry inputs and outputs, and assuring proper PLC operation, and proper SCADA system functionality.
  • Provide technical supervision, inspection and coordination over control system modifications made by contractors or District staff.
  • Work with appropriate work groups and IT staff to provide and/or develop data interfaces between operations and SCADA applications. Participate with IT Infrastructure personnel to review system maintenance, diagnose problems, etc. related to IT Standard operating systems and databases. Provide SCADA system hardware and software support in conjunction with appropriate IT personnel as needed. Coordinate with Engineering and Operations personnel to ensure that graphics, reports, and applications design meet customer requirements.

Other Assigned Duties
Assumes responsibility for covering a part of the work assignments of co-workers during short absences as assigned. Participates in District committee and staff functions. Participates in teams engaged with process and customer service improvements and cross-training. Performs other work consistent with the responsibilities assigned to the classification and necessary to the effective operations of administrative support services and the District.


A combination of training and experience which demonstrates that a person has obtained the required knowledge and is able to perform the required work (with reasonable accommodation, if needed). A person with the following combined training and experience would typically qualify to compete in a selection process:

EDUCATION: Associates degree in electrical technology, instrumentation, industrial automation technology or closely related field or an equivalent combination of education, training, and experience in electrical, instrumentation, industrial automation technology or process control maintenance and repair.

EXPERIENCE: Minimum of four (4) years of journey level experience as an electrical/ instrumentation technician, including a minimum of 2 years' experience operating and maintaining software and hardware in a process control environment, preferably in the wastewater industry.


A valid California State Class C license must be maintained at all times. Continued maintenance of valid driver’s license in compliance with established District vehicle operations standards, and the ability to be insured for the operation of a vehicle/District vehicle in accordance with the terms and conditions of the District’s insurance program are conditions of continued employment.

California Water Environment Association (CWEA) Electrical/Instrumentation Technology Certification (Grade II) is required prior to the completion of probationary period. ISA certification as a Control Systems Technician level II is highly desirable.

Failure to obtain and maintain the required certifications may result in termination of employment.

Knowledge of the following is required to perform the essential function:

  • Principles and practices of PLC programming.
  • Theory and operation of digital computers, PLCs, and plant instrumentation.
  • Principles, practices, and methods related to the design and implementation of large-scale PLC systems, programming, and troubleshooting techniques.
  • PLC network layout and fiber optic and PLC component locations.
  • Experience in current SCADA System platform a plus (GE iFIX, Telvent, CygNet, CSI/UCOS, WonderWare)
  • Techniques used in inspecting large water and wastewater electrical equipment systems.
  • Experience in data management and data conversion using MS Office tools and SQL tools.
  • Familiarity with IT, SCADA, and/or Telecomm architectural standards.
  • Working knowledge of electrical safety in the workplace standards (NFPA 70E).
  • Specific application of state and local laws and regulations applicable to maintenance and repair of electrical, electronic, and instrumentation of plant and conveyance systems and related heavy equipment.
  • Mathematics including algebra, statistics, and geometry.
  • Proficient in Microsoft Office applications including MS-Excel & MS-Word
  • Techniques used in estimating time, materials, and supplies for cost estimates for water and wastewater, electrical, and instrumentation equipment maintenance and repair work.
  • Proper personal protection equipment.

Ability to do the following is required to perform the essential function:

  • Diagnose PLC and computer hardware and software problems and control and instrument problems.
  • Troubleshoot electrical circuits.
  • Create HMI schematics and scripting.
  • Analyze data from planned tests, identify wiring and microcircuits, interpret schematics, observe changes, problem solve programs, and explain to operators how programs work.
  • Ability to understand and apply Object Oriented methodologies and learn new technology at a rapid pace.
  • Design instrument, analog control, and telemetry installations and simple electronic circuits.
  • Perform flow and instrument related calculations.
  • Evaluate, plan, and establish a sequence of action for work projects to progress.
  • Interpret and apply the specific provisions of regulations and procedures to particular conditions.
  • Perform mathematical calculations common to electrical and instrumentation equipment repair operations.
  • Assist District personnel in the use of the District's SCADA system.
  • Establish and maintain cooperative relationships with those contacted in the course of work.
  • Provide new employees with proper training and instruction to work safely and effectively.
  • Demonstrate excellent English-language skill, and good written and verbal communication skill.
  • Strong analytical skills and logical thought processes.
  • Must be able to manage multiple tasks
  • Must have reasonable typing skills to effectively complete required work.
  • Strong organizational and documentation skills.
  • Learn and observe all appropriate safety precautions and Safety Directives as required by the District.

IMPORTANT NOTE: External applicants are required to be fully vaccinated* for COVID-19 as a condition of employment with the District. Requests for a reasonable accommodation due to medical or disability reasons or for a sincerely held religious belief will be considered on a case-by-case basis.

*Fully Vaccinated means a person’s status two weeks following the person’s receipt of a single-dose COVID-19 Vaccine or the second dose of a two-dose COVID-19 Vaccine.


Applicants interested in this position are encouraged to submit a completed Delta Diablo Employment Application. All material must be submitted on-line at

The position will be open until filled. This recruitment process will establish an eligibility list that will be used to fill a vacancy in the Resource Recovery Services Department. A resume may be included but does not substitute for a completed application form. Incomplete applications will not be considered. Applications will be screened to determine who met the minimum qualifications. Those candidates whose application indicates their experience and/or education are best suited to meet the current needs of the District will be invited to participate in the examination and/or interview process beginning in late September. The decisions of the District are final.

All applicants shall receive written notification regarding the results of the review process. The information contained herein does not constitute either an expressed or implied contract, and these provisions are subject to change. All final candidates for employment with the District are subject to a criminal background, credit and reference check. Successful candidates not currently employed in a regular status by the District must pass a pre-employment physical examination and drug screen to be considered for employment.

For more information about the positions and Delta Diablo, visit our website at

Fair Labor Standards Act Classification: Non-Exempt, classification qualifies for overtime compensation in accordance with federal and state wage and hour laws

Collective Bargaining Representation Unit: Operations and Maintenance Bargaining Unit, PEU Local One

Job Category
Local Government
Career Level
Mid Level

Share this job