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Duffield Associates, Inc. ICC Special Inspector in Wilmington, Delaware

Duffield Associates, Inc. is an award-winning engineering and science consulting firm specializing in civil, environmental, and geotechnical engineering, construction consulting and testing services. Established in 1976, Duffield has grown to include a professional and technical staff of over 100 individuals. The firm’s headquarters is located in a historic barn and farmhouse in Pike Creek Valley outside of Wilmington, Delaware. We have regional offices in Georgetown and Dover, Delaware, Center City Philadelphia, Pennsylvania, West Deptford, New Jersey, and Bel Air, Maryland.

Duffield Associates is proud to offer a wide variety of benefits to our eligible employees. Each eligible employee receives a Benefit Contribution (enough to, potentially, cover 100% of a single employee's medical coverage) to spend as he/she pleases on plans such as:

  • 5 choices of medical plans

  • Several choices of dental and vision insurance

  • Ancillary benefits such as: Life Insurance, critical illness, accident insurance, Teledoc, Pet insurance, Legal assistance.

Additional benefits:

  • Company provided Short-term and Long-term Disability

  • 401k and Roth 401k with company match of 50% of employee contribution up to 6%.

  • 8 paid holidays

  • Minimum of 80 hours of vacation plus 40 hours of sick time.

  • Recreation room with beverages on tap, espresso/cappuccino machine, pool table, and video games.

  • On-site gym.

  • Outreach activities such as blood drives, adopt-a-highway, American Heart Associations Awareness activities, etc.


  • Perform quality control review and testing for construction projects.

  • Field observation, testing and sampling of construction materials (soils, concrete, masonry, SFRM, structural and light gage steel, and timber construction for conformance with contract documents.

  • Write field reports documenting work performed confirming compliance status with contract documents.

  • Recordkeeping and maintenance of testing equipment.

  • Additional tasks may include laboratory testing of soils and concrete.


  • Applicable ICC Certifications in at least one of the following categories: Soils, Reinforced Concrete, Masonry, Spray-Applied Fire Proofing, Structural Steel.

  • Minimum of 3 years construction experience in the review and testing of soils, masonry, concrete and/or asphalt.

  • Ability to read and interpret plans and directions.

  • Good written and verbal communication skills

  • Possess the physical strength and stamina to repeatedly lift and move up to 50 pounds as well as climb, bend, and stoop for extended periods and in varying weather conditions.

  • Ability to work nights and weekends, as required.

  • Some overnight travel may be required.

  • Valid driver's license and clear driving record.


  • Troxler Nuclear Density Gauge Certification

  • ACI Concrete Field Testing Technician Certification

  • EIFS Certification

  • NICET (Soils, Asphalt or Concrete)

  • AWS Certified Weld Inspector

  • OSHA 40 Hour Certification