Description

• Perform physical, index, and chemical testing of construction materials (concrete, CMU, hot mix asphalt, soils, aggregates) per ASTM, AASHTO, DOT, etc.
• Document work hours and assist with client billing efforts
• Maintain routine maintenance and calibration records for laboratory equipment
• Keep the laboratory and workspace neat, clean, and safe
• Maintain relevant certifications and stay current with testing methods
• Meet deadlines and prioritize tasks according to established procedures
• Demonstrate safe usage, storage, and maintenance of all tools, equipment, and company vehicle
• Foster effective working relationships with internal and external personnel
• Participate in Raba Kistner Health & Safety and BBS programs, modeling safety standards

Requirements

The firm is seeking a detail‑oriented, dependable Laboratory Technician to join the Consultants team in the San Antonio, TX area. The technician will be responsible for sampling, processing, and testing construction materials in accordance with ASTM, AASHTO, DOT, US Corps of Engineers, and other established specifications, while properly documenting testing results.

This position may require irregular or protracted hours and flexibility to meet client needs, as well as occasional out‑of‑town or overnight travel to Raba Kistner offices, client sites, and project locations. The work environment can be loud and may expose the employee to heavy equipment, hazardous chemicals, dust, fumes, and other construction‑site hazards, requiring strict adherence to safety procedures and protective equipment.

Physical demands include regularly sitting, standing, walking, climbing, stooping, kneeling, and lifting or moving up to 70 pounds, often with sample containers and equipment. Employees must use their hands, reach frequently, and possess various vision abilities, while handling delicate laboratory tools and non‑complex machines safely.

Raba Kistner is an equal‑opportunity employer for disabled individuals and veterans, maintains a drug‑free workplace, and expects candidates to meet certification requirements, possess a valid driver’s license, and demonstrate strong oral and written communication skills along with basic math and science knowledge.

• Hold a high school diploma/GED and at least one relevant industry certification (e.g., ACI Field, ACI Concrete Strength, ACI Aggregates, TxDOT SB101‑SB202, 1A/1B) or obtain one within six months
• Possess a valid driver’s license and meet the firm’s auto‑insurability requirements
• Demonstrate good oral and written communication skills and basic math/science knowledge to analyze lab results

Benefits

• Growth – dedicate to personal and business growth

Training + Development

Interview process

Visa Sponsorship

Security clearance