Senior Lab Technician - Construction Materials Testing

ECS Mid-Atlantic, LLC; Dover (DE); On-site; USD 39,000 - 44,000; Full time

Job summary

ECS Limited in Dover is seeking a certified Construction Materials Testing (CMT) Senior Laboratory Technician I to join our team. You will perform laboratory testing on concrete and soils samples and collaborate with experienced professionals to advance your skills.

The role requires strong data interpretation, adherence to ASTM methods, and the ability to train junior staff. Expect growth opportunities with additional certifications and duties as you gain experience.

Qualifications

• High school diploma or GED required.
• Basic certifications and one additional certification as per policy (two labs if dual soil/concrete work).
• Valid driver's license if driving for ECS or subsidiaries.
• 2 years of related experience.
• Strong communication and math skills.
• Attention to detail and accuracy in data recording and reporting.
• Proficiency with laboratory equipment and ASTM testing methods.
• Ability to interpret test data and prepare summaries or reports.
• Proficiency with computers including Word and Excel.
• Experience with Breakpro or Keylab laboratory software.
• Ability to lift up to 50 pounds daily.

Responsibilities

• Performs laboratory testing on construction material samples.
• Applies standard and advanced testing procedures per ASTM standards.
• Interprets test data and prepares summaries or reports under Laboratory Manager supervision.
• Performs data reduction and calculations for test results.
• Supports advanced testing activities under senior staff guidance.
• Performs soils laboratory testing (Atterberg limits, gradation, swell, moisture, visual classification, UCS).
• Performs concrete laboratory testing (stripping, curing, temp logs, sample breaking).
• Maintains QA/QC and accreditation records (DOT, AMRL, CCRL, AASHTO).
• Calibrates and maintains laboratory equipment and notifies supervisors of issues.
• Prepares for and supports external audits and assessments.
• Trains and mentors junior staff; assists with fieldwork as needed.

Skills

Strong communication

Attention to detail

Microsoft Word & Excel

Data interpretation

Education

High school diploma or GED

Tools

Breakpro

Keylab

Job description

ECS Limited in Dover is seeking a certified Construction Materials Testing (CMT) Senior Laboratory Technician I to join our team. You will perform laboratory testing on concrete and soils samples and collaborate with experienced professionals to advance your skills.

The role requires strong data interpretation, adherence to ASTM methods, and the ability to train junior staff. Expect growth opportunities with additional certifications and duties as you gain experience.