Demo

Mechanical Engineer

DN
El Cajon, CA Full Time
POSTED ON 12/2/2025
AVAILABLE BEFORE 5/30/2026
Our culture is rooted in a shared vision — to help keep the world’s most precious resource safe — and in the core values that guide us in pursuing this vision and delivering on our mission to clients.

We provide the highest quality liquid storage design and construction services at the best long-term value with an unrivaled customer experience. We have built over 3,500 pre-stressed concrete liquid storage tanks over the past 90 years around the country and world, as a result we have become the leader in the industry when it comes to quality and innovation.

DN is seeking a skilled and innovative Mechanical Engineer to design, develop, and test equipment, including tools, engines, and machines. Working cross-functionally across multiple teams to maintain and improve the performance of current equipment; bring new products from concept to production, optimize mechanical systems, and work hands-on to solve engineering problems. If you have a desire and passion to work with machines, work through complex issues, and own machine engineering for all equipment across the organization, we invite you to apply!

Equipment Performance & Enhancements

  • Design and develop mechanical, electrical and hydraulic systems and components using CAD tools (SolidWorks, AutoCAD), including engineering calculations, FEA simulations, and creation of technical drawings, specifications, sketches, and purchase requests
  • Prototype, test, validate, and troubleshoot mechanical, electrical, and hydraulic systems, including pumps, motors, valves, cylinders, and control systems, ensuring performance, safety, reliability, and manufacturability
  • Collaborate cross-functionally to integrate systems and support development of equipment, machinery, and measurement instruments
  • Apply deep technical knowledge in hydraulics, electronics, mechanics, engines, motors, prestressing, mechanics of materials, PLCs, and basic coding
  • Oversee documentation and cost evaluation, including operations manuals, maintenance schedules, fabrication/assembly planning, and estimation of labor, materials, and installation/testing costs




Field Operations Support

  • Support field equipment troubleshooting
  • Collaborate with equipment Operators to support operations
  • Provide hands-on support and assistance of field staff on the job as needed
  • Analyze performance results, make recommendations for improvements, troubleshoot issues
  • Coordinate field equipment set up and calibration for optimal operation




Equipment Maintenance Support

  • Assist the maintenance department in coordination with equipment/parts suppliers
  • Specify maintenance schedule for machines and equipment.
  • Conduct regular inspections and maintenance of machinery and equipment to ensure optimal operation.
  • Troubleshoot mechanical issues and diagnose problems in machinery and related systems.
  • Recommend the repair or replace worn or malfunctioning parts and equipment.
  • Run performance tests and interpret the results to make effective recommendations to fix faulty or broken equipment.
  • Set up and conduct tests of complete units and components under operational conditions to investigate proposals for improving equipment performance
  • Travel to project sites as needed to assist in observation and troubleshooting of specialty equipment.




Requirements & Qualifications

  • Bachelors degree in Mechanical or Industrial Engineering.
  • Familiarity with hydraulic control systems, PLC, and electrical controls and operation
  • Ability to troubleshoot hydraulic pumps, motors, valves, cylinders, and control systems
  • Ability to read and interpret electrical wiring diagrams
  • Knowledge of PLC systems and electrical charging systems, ability to diagnose problems
  • Ability to travel as needed.




DN is An Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status, age, or any other federally protected class. All employment is decided on the basis of qualifications, merit, and business need.

This is our good faith estimate of the base salary compensation range for this opportunity. Individual pay decisions will vary based upon the experience and qualifications of the applicant. This range is based on market rates and determined by considering many factors such as external market salary survey data, internal data for comparable roles, and the operational and budgetary objectives of the company.

Salary : $80,000 - $110,000

If your compensation planning software is too rigid to deploy winning incentive strategies, it’s time to find an adaptable solution. Compensation Planning
Enhance your organization's compensation strategy with salary data sets that HR and team managers can use to pay your staff right. Surveys & Data Sets

What is the career path for a Mechanical Engineer?

Sign up to receive alerts about other jobs on the Mechanical Engineer career path by checking the boxes next to the positions that interest you.
Income Estimation: 
$74,551 - $88,300
Income Estimation: 
$85,954 - $106,408
Income Estimation: 
$91,017 - $111,627
Income Estimation: 
$75,805 - $90,068
Income Estimation: 
$85,954 - $106,408
Income Estimation: 
$91,017 - $111,627
Income Estimation: 
$85,954 - $106,408
Income Estimation: 
$106,299 - $135,354
Income Estimation: 
$108,186 - $133,193
Income Estimation: 
$106,299 - $135,354
Income Estimation: 
$134,236 - $174,128
Income Estimation: 
$132,162 - $161,329
Income Estimation: 
$134,236 - $174,128
Income Estimation: 
$155,404 - $198,448
Income Estimation: 
$158,725 - $194,124
View Core, Job Family, and Industry Job Skills and Competency Data for more than 15,000 Job Titles Skills Library

Job openings at DN

  • DN El Cajon, CA
  • Our culture is rooted in a shared vision — to help keep the world’s most precious resource safe — and in the core values that guide us in pursuing this vis... more
  • 13 Days Ago

  • DN Rayville, LA
  • Our culture is rooted in a shared vision — to help keep the world’s most precious resource safe — and in the core values that guide us in pursuing this vis... more
  • 5 Days Ago

  • DN Morgantown, WV
  • Our culture is rooted in a shared vision — to help keep the world’s most precious resource safe — and in the core values that guide us in pursuing this vis... more
  • 6 Days Ago

  • DN Morgantown, WV
  • Our culture is rooted in a shared vision — to help keep the world’s most precious resource safe — and in the core values that guide us in pursuing this vis... more
  • 6 Days Ago


Not the job you're looking for? Here are some other Mechanical Engineer jobs in the El Cajon, CA area that may be a better fit.

  • Mechanical Equipment San Diego, CA
  • Water Works is seeking a Project Engineer for mechanical/process engineering design in our San Diego office. Specific responsibilities will vary from proje... more
  • 2 Months Ago

  • ASML USA San Diego, CA
  • Job Details Introduction ASML US, including its affiliates and subsidiaries, bring together the most creative minds in science and technology to develop li... more
  • 1 Month Ago

AI Assistant is available now!

Feel free to start your new journey!