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D&N LLCMechanical Engineering Technician
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Before you apply
SalaryNo pay range posted
LocationEl Cajon, CA
Work modeon-site
Typefull-time
SeniorityMid
Experience2+ yrs
DepartmentEngineering
Company size501–1,000 people
PostedApr 27, 2026 · 6mo ago
Verified live2d ago
May no longer be actively hiring
Posted by the company on Apr 27, 202677% of this company's open roles have been listed for 90+ daysNo pay range listed, though California requires one
At a glanceSummarised by Seekless from the posting.
Bachelors degree in Mechanical or Industrial Engineering
Familiarity with hydraulic control systems, PLC, and electrical controls and operation
2+ years experience in a Mechanical Engineering, Mechanical Technician, or similar
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
Skills
SolidWorks
AutoCAD
PLC
hydraulic control systems
electrical controls
Benefits
401(k)
Health insurance
Dental coverage
Vision coverage
Life insurance
Disability coverage
Paid time off
Paid holidays
Parental leave
Tuition reimbursement
Gym reimbursement
Employee referral bonus
Employee assistance program
Flexible spending account
About the company
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.
About the role
DN is seeking a skilled and innovative Mechanical Engineering Technician to design, develop, diagnose, 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
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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.
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Prototype, test, validate, and troubleshoot mechanical, electrical, and hydraulic systems, including pumps, motors, valves, cylinders, and control systems, ensuring performance, safety, reliability, and manufacturability.
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Collaborate cross-functionally to integrate systems and support development of equipment, machinery, and measurement instruments.
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Apply deep technical knowledge in hydraulics, electronics, mechanics, engines, motors, prestressing, mechanics of materials, PLCs, and basic coding.
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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
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Support field equipment troubleshooting.
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Collaborate with equipment Operators to support operations.
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Provide hands-on support and assistance of field staff on the job as needed.
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Analyze performance results, make recommendations for improvements, troubleshoot issues.
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Coordinate field equipment set up and calibration for optimal operation.
Equipment Maintenance Support
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Assist the maintenance department in coordination with equipment/parts suppliers
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Specify maintenance schedule for machines and equipment.
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Conduct regular inspections and maintenance of machinery and equipment to ensure optimal operation.
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Troubleshoot mechanical issues and diagnose problems in machinery and related systems.
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Recommend the repair or replace worn or malfunctioning parts and equipment.
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Run performance tests and interpret the results to make effective recommendations to fix faulty or broken equipment.
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Set up and conduct tests of complete units and components under operational conditions to investigate proposals for improving equipment performance.
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Travel to project sites as needed to assist in observation and troubleshooting of specialty equipment.
Requirements & Qualifications
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Bachelors degree in Mechanical or Industrial Engineering.
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Familiarity with hydraulic control systems, PLC, and electrical controls and operation.
•
2+ years experience in a Mechanical Engineering, Mechanical Technician, or similar.
•
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.
Total Rewards
Our Total Rewards offerings are designed to invest in our employees and their families, including:
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Competitive base compensation plus eligibility for DN’s annual incentive bonus program
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401(k) retirement plan consisting of a 100% employer match on the first 6% of employee contributions and an additional 3% Safe Harbor company contribution
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Medical coverage effective on date of hire, with DN covering 80%–85% of premiums depending on plan selection
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Dental coverage effective on date of hire, with DN covering 75% of premiums
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Voluntary vision coverage effective on date of hire
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Flexible Spending Account options for eligible medical, dental and dependent-care expenses
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Company-paid life insurance, accidental death & dismemberment coverage, and long-term disability coverage
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Paid time off starting at 16 days annually, increasing with tenure, plus 9 paid holidays each year
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Half-day Fridays between July 4 and Labor Day
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Paid parental leave for birth mothers and spouses or committed partners
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Employee Assistance Program available at no cost to employees and household members for work/life support
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Tuition reimbursement
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Gym reimbursement
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Employee referral incentive program
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Career growth, internal mobility and professional development opportunities within a stable, purpose-driven company
Legal
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.