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Salary
$80k – $110k per year
Location
In office (El Cajon)
Seniority
Junior · 2+ years exp
Visa
green card filings: 1
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 30, 2026. First seen by Alion on Apr 27, 2026. DN Tanks scores A on the Alion truth index.

Overview
Company
Impact
Profile match
DN Tanks is a designer and builder of prestressed concrete liquid storage tanks for water, wastewater, thermal energy storage and industrial uses, headquartered in Wakefield, Massachusetts. With more than 3,500 prestressed concrete tanks built over some 90 years, it also offers Concrete Tank Services for the inspection, rehabilitation and retrofit of existing tanks, and runs traveling construction crews across the eastern, central and western United States. It hires traveling concrete superintendents and carpenter foremen, construction and assistant project managers, regional sales managers, structural design engineers, estimators and engineering and construction co-op students.

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

  • 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.
  • 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:

    • Competitive base compensation plus eligibility for DN’s annual incentive bonus program
    • 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
    • Medical coverage effective on date of hire, with DN covering 80%-85% of premiums depending on plan selection
    • Dental coverage effective on date of hire, with DN covering 75% of premiums
    • Voluntary vision coverage effective on date of hire
    • Flexible Spending Account options for eligible medical, dental and dependent-care expenses
    • Company-paid life insurance, accidental death & dismemberment coverage, and long-term disability coverage
    • Paid time off starting at 16 days annually, increasing with tenure, plus 9 paid holidays each year
    • Half-day Fridays between July 4 and Labor Day
    • Paid parental leave for birth mothers and spouses or committed partners
    • Employee Assistance Program available at no cost to employees and household members for work/life support
    • Tuition reimbursement
    • Gym reimbursement
    • Employee referral incentive program
    • Career growth, internal mobility and professional development opportunities within a stable, purpose-driven company
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