Technical Services Intern

Capitol Aggregates, Inc.; San Antonio (TX); On-site; USD 21,000 - 30,000; Full time

Job summary

Capitol Aggregates, Inc. seeks a Technical Services Intern to support product testing, data analysis, lab activities, and customer technical support. Get hands-on experience with cement, concrete, and aggregate materials and learn how technical services impact product performance.

You will gain experience preparing mortar cubes, concrete mixes, and aggregates, documenting results, and assisting with customer inquiries under experienced staff guidance.

Qualifications

• Currently enrolled in a degree program in Concrete Industry Management (CIM), Materials Science, Chemistry, Civil Engineering, or a related scientific, technical, or engineering field.
• Previous coursework or experience involving material testing, concrete, cement, or laboratory procedures is preferred but not required.
• Mechanical aptitude with an interest in laboratory and materials testing equipment.

Responsibilities

• Learn and apply established testing methods, procedures, and equipment under the guidance of Technical Services staff.
• Assist with preparing cement, concrete, mortar, and aggregate materials for laboratory testing.
• Assist with mortar cube preparation, concrete mixes, and aggregate material testing.
• Perform laboratory tests under the guidance of experienced Technical Services personnel.
• Collect, organize, document, and assist with analyzing laboratory and product testing data.
• Assist with maintaining accurate records of laboratory testing, test results, and related technical documentation.
• Support Technical Services staff in responding to customer inquiries and technical questions.
• Assist with researching and troubleshooting product performance or other technical concerns raised by customers.
• Learn how laboratory testing and technical data are used to evaluate product performance and support customer needs.

Skills

MS Office

Excel

Detail oriented

Communication

Education

Related STEM degree

CIM program (preferred)

Job description

Who We Are

Capitol Aggregates, a division of Zachry, stands on a rich tradition of creativity, stability, innovation, and experience in the construction and building materials industry. Fully understanding that Capitol's employees are the heart of our success, we foster a dynamic work environment by providing development opportunities such as training, education, and career advancement.

We believe people are our greatest asset and offer a variety of training and development opportunities to promote excellence and facilitate career advancement. We take care of our team members as family, within a culture of service where we do the right thing because it is the right thing to do.

Our Core Values guide everything we do:

Every Person Matters | Together We Can Do Great Things | This Is More Than a Job

Position Overview

The Technical Services Intern works alongside the Technical Services team to support product testing, data analysis, laboratory activities, and customer technical support. This position provides hands‑on experience with cement, concrete, and aggregate materials while introducing the intern to the role technical services plays in product performance and customer support.

The intern will gain practical experience preparing and testing mortar cubes, concrete mixes, and aggregate materials, analyzing and documenting test results, and assisting experienced technical professionals with customer questions and technical concerns.

What You'll Do

• Learn and apply established testing methods, procedures, and equipment under the guidance of Technical Services staff.


• Assist with preparing cement, concrete, mortar, and aggregate materials for laboratory testing.


• Assist with mortar cube preparation, concrete mixes, and aggregate material testing.


• Perform laboratory tests under the guidance of experienced Technical Services personnel.


• Collect, organize, document, and assist with analyzing laboratory and product testing data.


• Assist with maintaining accurate records of laboratory testing, test results, and related technical documentation.


• Support Technical Services staff in responding to customer inquiries and technical questions.


• Assist with researching and troubleshooting product performance or other technical concerns raised by customers.


• Learn how laboratory testing and technical data are used to evaluate product performance and support customer needs.


• Participate in technical projects involving cement, concrete, aggregates, and other construction materials.


• Work collaboratively with Technical Services, Quality, Sales, Operations, and other team members to support product and customer needs.


• Maintain laboratory work areas and equipment in a safe, clean, and organized condition.


• Follow all Company and plant safety policies, rules, and procedures, as well as applicable MSHA regulations.

NOTE: This list presents only the principal duties of the position and is not intended to be comprehensive. Other duties and responsibilities may be assigned as dictated by business needs and conditions. As an essential function of the job, good attendance is required.

What You'll Bring

Required Skills and Abilities

• Proficiency with Microsoft Office applications, including Excel, Word, and Outlook.


• Strong attention to detail with the ability to accurately follow testing procedures and document results.


• Strong analytical and problem-solving skills with an interest in understanding material and product performance.


• Strong organizational, planning, and time management skills.


• Effective verbal and written communication skills.


• Strong interpersonal skills with the ability to communicate effectively with Technical Services personnel, customers, and other team members.


• Ability to understand and follow written and verbal instructions.


• Ability to accurately collect, organize, and maintain testing and technical data.


• Ability to manage assigned responsibilities with appropriate independence and accountability.


• Self‑motivated with a willingness to learn new testing methods, materials, equipment, and technical concepts.

Education & Experience

• Currently enrolled in a degree program in Concrete Industry Management (CIM), Materials Science, Chemistry, Civil Engineering, or a related scientific, technical, or engineering field.


• Previous laboratory, construction materials, concrete, cement, aggregate, or technical experience is helpful but not required.


• Previous coursework or experience involving material testing, concrete, cement, or laboratory procedures is preferred but not required.

Other Qualifications

• Mechanical aptitude with an interest in laboratory and materials testing equipment.


• Interest in cement, concrete, aggregates, materials science, or the construction materials industry.


• Interest in applying technical knowledge to product performance and customer needs.


• Ability and willingness to work in laboratory, production, and field environments as needed.


• Ability to wear required personal protective equipment (PPE) and work safely around active production operations.


• Commitment to following all Company safety policies, procedures, and applicable MSHA regulations.

Notice to Staffing Agencies

Capitol Aggregates Inc. (Capitol) will not accept unsolicited resumes from any source other than directly from a candidate. Any unsolicited resumes sent to Capitol, including unsolicited resumes sent to a Capitol mailing address or email address, directly to Capitol employees, or to Capitol's resume database will be considered Capitol property. Capitol will not pay a fee for any placement resulting from the receipt of an unsolicited resume. Capitol will consider any candidate for whom an Agency has submitted an unsolicited resume to have been referred by the Agency free of any charges or fees. Agencies must obtain advance written approval from Capitol's recruiting function to submit resumes, and then only in conjunction with a valid, fully executed contract for service and in response to a specific job opening. Capitol will not pay a fee to any Agency that does not have such an agreement in place. Agency agreements will only be valid if in writing and signed by Capitol's Human Resources Representative or their designee. No other Capitol employee is authorized to bind Capitol to any agreement regarding the placement of candidates by an Agency.

Position Information

Company: Zachry

Position: Technical Services Intern

Req #: 11131076

Date Posted: September 17, 2026

Location: 14410 Wurzbach Parkway, San Antonio, US, TX, 78216

Job Category: Sales & Marketing