Construction Materials Testing Specialist

Position Overview

The Construction Materials Testing (CMT) Specialist supports Harris County construction projects by coordinating and overseeing construction materials testing services to ensure quality, compliance, and consistency. This role ensures that all CMT work complies with project specifications, ASTM, AASHTO, TxDOT, ISO standards, and Harris County requirements. The position plays a key role in maintaining the integrity of construction materials and supporting safe, reliable infrastructure delivery.

The Construction Materials Testing (CMT) Specialist supports Harris County construction projects by coordinating and overseeing construction materials testing services to ensure quality, compliance, and consistency. This role ensures that all CMT work complies with project specifications, ASTM, AASHTO, TxDOT, ISO standards, and Harris County requirements. The position plays a key role in maintaining the integrity of construction materials and supporting safe, reliable infrastructure delivery.

• Review and evaluate CMT field and laboratory reports for accuracy, completeness, and compliance with applicable standards.
• Monitor project budgets, prepare budget tracking reports, and ensure testing services remain within established allocations.
• Review and validate invoices for accuracy and adherence to Harris County fee schedules and governing specifications.
• Coordinate with CMT firms regarding scheduling, performance expectations, and billing discrepancies
• Perform field and laboratory evaluations of CMT technicians to ensure adherence to testing procedures and quality standards
• Assist in training Harris County inspectors on ASTM, TxDOT, and related testing procedures
• Support or lead material failure investigations, including documentation and coordination with relevant stakeholders
• Attend project meetings and provide input on materials testing, quality concerns, and compliance issues
• Maintain documentation and tracking of testing activities to support reporting and audit readiness
• Provide general support to project teams and leadership as needed
• Perform other duties as assigned

Harris County is an Equal Opportunity Employer

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This position is subject to a criminal history check. Only relevant convictions will be considered and, even when considered, may not automatically disqualify the candidate.

• High school diploma or GED equivalent.

• Minimum of five (5) years of experience in construction materials testing, including field and/or laboratory work.

• Valid Texas Driver's License upon hire, and a good driving record
• Knowledge, Skills & Abilities (KSAs):
• Working knowledge of ASTM and TxDOT test methods for soils, aggregates, concrete, asphalt, and reinforcing steel.
• Ability to interpret construction plans, specifications, and testing requirements.
• Strong understanding of materials testing procedures in both field and laboratory environments.
• Proficiency in standard math calculations used in construction materials testing.
• Strong organizational, analytical, and problem-solving skills.
• Effective verbal and written communication skills with the ability to coordinate across internal teams and external vendors.
• Ability to manage multiple projects and priorities in a fast-paced environment.

In accordance with Harris County’s Continuity of Operations Plan (COOP) Policy, this position is subject to emergency response and deployment protocols. The employee may be designated as supporting a Mission Essential Function (MEF) and must:

• Participate in the classification process of departmental staff based on MEF responsibilities. Be available for temporary deployment to an alternative work location, role, or telework assignment during emergency events.
• Confirm work assignments with their supervisor prior to reporting to any worksite during such events.
• Remain flexible in assuming alternative duties as directed to support County operations…