Senior Construction Materials Field Technician

ECS Ltd; San Antonio (TX); On-site; USD 30,000 - 50,000; Full time

Job summary

ECS Limited is seeking a certified Construction Materials Testing (CMT) Senior Field Technician I to join our San Antonio team. You will work with project management professionals to safely perform field services, mentor junior staff, and help drive quality and accuracy in testing documentation.

The role emphasizes advanced testing knowledge, strong communication, and the ability to lead small field efforts while lifting equipment up to 85 lbs.

Qualifications

• High school diploma or GED required.
• Two advanced certifications in construction materials testing as per policy.
• Excellent verbal and written communication skills.
• Ability to read and interpret engineering plans and specs.
• Advanced knowledge of testing principles and standards.

Responsibilities

• Performs field observation, testing, sampling, and inspection of soils, aggregates, concrete, masonry, asphalt, and related materials.
• Executes testing activities on projects of moderate complexity with minimal supervision.
• Communicates daily with contractors, technicians, and project managers.
• Prepares accurate daily field reports documenting site conditions and results.
• Performs calculations, data reduction, and documentation tasks.
• Maintains and organizes field equipment and testing materials.
• Trains Technician I/II staff in field procedures and documentation.
• Participates in project meetings with senior staff as requested.

Skills

Math and data reduction

Reading engineering plans

Independent work leadership

Excellent verbal and written comms

Education

High school diploma or GED

Advanced CMT certifications

Tools

OSHA 10 (may be required)

Job description

ECS Limited is offering a unique opportunity for a talented and certified Construction Materials Testing (CMT) Senior Field Technician I to join our San Antonio team. We offer opportunities for professional development with additional incentives as you advance your skills and gain experience. In this role, you'll continue to collaborate and develop with experienced project management professionals to safely perform a variety of tasks in Field Services department.

Responsibilities

• Performs field observation, testing, sampling, and inspection of soils, aggregates, concrete, masonry, asphalt, structural steel, and related materials
• Executes testing activities on projects of moderate complexity with minimal supervision
• Communicates daily with contractors, technicians, and project managers
• Reports changing site conditions and additional testing needs to supervisors
• Prepares accurate and detailed daily field reports documenting site conditions and results
• Performs calculations, data reduction, and documentation tasks
• Maintains and organizes field equipment and testing materials
• Assists in resolving field-related issues and supports project execution
• Trains and mentors Technician I and Technician II staff in field procedures and documentation
• Participates in project meetings with senior staff as requested
• Performs other field and project support duties as assigned

Career Development

• Support you in further enhancing your professional skills.
• Encourage continued participation in internal and external training programs and certification opportunities provided by organizations such as ACI, ASNT, AWS, ICC, NICET, NRCA, RCI, various State DOTs, WACEL, and others, as appropriate.

Qualifications

Required Qualifications

• 2 years of related experience
• High school diploma or GED required
• Maintain basic certifications and two advanced certifications applicable to the work performed as per the ECS Technician Certification Policy
  • General industry OSHA 10 may be required
• If driving for or on behalf of any ECS subsidiary, a valid driver's license is required

• Excellent verbal and written communication skills

• Dependable, self-motivated, and detail-oriented

• Advanced knowledge of construction materials testing principles and standards

• Strong understanding of construction practices and jobsite operations

• Advanced proficiency with electronic devices and data systems

• Strong math and data reduction skills

• Ability to read and interpret engineering plans and specifications

• Ability to work independently and lead small efforts in the field

• Ability to lift equipment and materials regularly (up to ~85 lbs)

• Ability to safely operate a motor vehicle and comply with all local and state laws, road and driving regulations, and company policies

Military Qualifications:

• The following US Military ranks will qualify for this position IF they also meet the education, certification, and licenses requirements from the above section titled "Required Qualifications":
  • E-4/E-5

About Us

ECS Group of Companies (ECS) was founded in 1988 with the goal to raise the standards of professional engineering consulting. Today, we are a leader in geotechnical, construction materials, environmental and building science + infrastructure consulting services. We are employee-owned with more than 3,200 employees in 125 offices and testing facilities coast to coast. ECS is currently ranked #60 in Engineering News-Record’s Top 500 Design Firms (April 2026), #144 in Engineering News-Record’s Top 200 Environmental Firms (October 2026) and #38 in Zweig Group’s Hot Firm List (June 2026). For additional information about ECS, visit: www.ecslimited.com.

ECS is an Equal Opportunity Employer. To learn more, click here.