Assistant Team Leader

ECS Group of Companies; San Antonio (TX); On-site; USD 60,000 - 80,000; Full time

Job summary

ECS Limited in San Antonio is seeking a certified Construction Materials Testing (CMT) Assistant Team Leader to join our Field Services team. You will mentor field staff and ensure technicians are trained and organized, supporting project managers and department leadership.

This role offers professional development and opportunities to advance through internal and external training, with certification programs from ACI, ASNT, NICET, ICC, NRCA, RCI, and other organizations.

Qualifications

• High school diploma or GED.
• 3+ years of related experience.
• Must have and be willing to maintain basic certifications.
• Advanced certifications may be required based on the work performed.
• Must be able to lift a minimum of 85 pounds.
• Strong communication skills (speaking, reading, and writing).
• Ability to work effectively with peers and supervisors.
• Good understanding of construction materials testing principles, applications, and ASTM testing standards.
• Proficient at data interpretation and evaluation of CMT techniques and results.

Responsibilities

• Field Activities: Perform observation, testing, sampling, and inspection of materials across construction sites.
• Safety: Maintain inventory, calibrate and maintain field equipment, promote safety culture, ensure PPE usage, assist with safety training.
• Communication: Daily coordination with technicians, project managers, and general contractors; assist with staff recruiting and scheduling; mentor junior staff.

Skills

Strong communication

Mentorship

Team leadership

Field operations

Data interpretation

Education

High school diploma or GED

Job description

ECS Limited is offering a unique opportunity for a talented and certified Construction Materials Testing (CMT) Assistant Team Leader 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 will successfully ensure that our technicians are properly trained and organized through mentorship within the Field Services department.

Responsibilities

• Field Activities: Perform observation, testing, sampling, and inspection of materials, including soils, aggregates, concrete, grout, masonry, asphalt, and structural steel placement on construction sites.
• Safety: Inventory maintenance and organization of supplies; Calibration and maintenance of field equipment to include keeping accurate records; Promote safety and safety culture; Ensure proper PPE is used on project sites; Assist with company required safety training.
• Communication: Daily communication with technicians, project managers, and general contractors; Collaborate with Team Leaders to support scheduling operations and recruiting to maintain appropriate staff among your team; Assist with management of field staff; Actively mentor and train junior field staff as they grow in their careers; Provide support to project managers and department manager as needed; Attend project meetings as requested; May participate in business development, marketing, and client development.

Career Development

As Your Experience Grows, ECS Will

• 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.

Required Qualifications

• High school diploma or GED.
• 3+ years of related experience.
• Must have and be willing to maintain basic certifications.
• Advanced certifications may be required based on the work performed.
• Must be able to lift a minimum of 85 pounds.
• Strong communication skills (speaking, reading, and writing).
• Ability to work effectively with peers and supervisors.
• Good understanding of construction materials testing principles, applications, and ASTM testing standards.
• Proficient at data interpretation and evaluation of CMT techniques and results.

Military Qualifications

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

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 facilities consulting services. We are employee-owned with more than 3,000 employees in 100+ offices and testing facilities coast to coast. ECS is currently ranked #60 in Engineering News-Record’s Top 500 Design Firms (April 2026), #148 in Engineering News-Record’s Top 200 Environmental Firms (October 2025) and #50 in Zweig Group’s Hot Firm List (May 2025). For additional information about ECS, visit: www.ecslimited.com.

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