Construction Materials Senior Field Technician III

ECS Group of Companies; Chantilly (VA); On-site; USD 34,000 - 48,000; Full time

Job summary

ECS Limited is seeking a certified Senior Field Technician III to join our Chantilly team. You will perform a range of field testing and inspection tasks across soils, concrete, and structural materials, strictly following project requirements and safety standards.

You will develop skills under experienced professionals, with opportunities for advancement and training through recognized certification programs and ECS methodologies. Competitive hourly pay and benefits apply.

Qualifications

• High School diploma or GED completed.
• Maintain current basic level certifications plus four advanced certifications.
• Must be able to lift 40–70 lbs multiple times daily and up to 85 lbs on occasion.

Responsibilities

• Perform observation, testing, sampling, and inspection of materials on construction sites (soils, aggregates, concrete, grout, masonry, asphalt, structural steel).
• Conduct routine field tests using industry-standard methods and equipment.
• Collect data, perform calculations, draft field reports documenting site observations.
• Maintain clear communication with site contractors, technicians, and project managers; report changes and additional testing needs.
• Receive training in ECS methodologies and document findings accurately.

Skills

Communication skills

Math skills

Tech literacy

Education

High School diploma

Tools

MS Office

Job description

ECS Limited is offering a unique opportunity for a talented and certified Construction Materials Testing (CMT) Senior Field Technician III to join our Chantilly 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

• Field Activities: Perform observation, testing, sampling, and inspection of materials, including soils, aggregates, concrete, grout, masonry, asphalt, and structural steel placement on construction sites; Execute tasks based on project requirements under the guidance of other senior technicians, staff professionals, and project managers.
• Testing Procedures: Conduct routine field tests for soils, aggregates, concrete, grout, masonry, asphalt, and structural steel placement using various methodologies and testing equipment following industry standards and compliance.
• Data Collection: Perform calculations and data reduction based on sampling, test results, and inspections; Engage in drafting and other administrative duties as required; Develop skills in documentation and prepare field reports that document site observations for field work performed.
• Communication: Maintain daily communication with site contractors, other technicians, and project managers; Keep supervisor and project teams informed of changing site conditions and additional testing requested; Attend project meetings with senior staff as requested.
• Training and Development: Receive training in ECS methodology for project observations, inspections, and testing; Document findings with precision in accordance with accepted engineering practices.

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

• 6+ years of related experience.
• High School diploma or GED.
• Must have and be willing to maintain current basic level certifications and an additional 4 advanced certifications.
• OSHA 10 may be required.
• Position requires carrying 40 - 70 lbs multiple times a day or occasionally lifting 85 lbs to waist height.
• Must have the ability to safely operate a motor vehicle and follow all local and state laws, road/driving regulations, and company policies.
• Must have valid driver's license and insurance.
• Must provide suitable transportation for use on job sites - Mileage will be reimbursed.
• Strong communication skills (speaking, reading, and writing).
• Excellent understanding of heavy construction safety, practices, and procedures.
• Ability to work effectively with clients, peers, and supervisors.
• Proficiency with electronic devices such as phones, tablets, and laptops.
• Strong math skills with the ability to read maps, follow directions, and interpret engineering and construction plans.
• Basic knowledge of MS Office.

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

The expected pay range for this role and location is $25-$35/hour. The final agreed-upon compensation will be determined based on specific location and other individual qualifications.

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 3,00 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 #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.