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Electrical Intern Summer 2026

Capitol Aggregates Inc
San Antonio, TX Intern
POSTED ON 9/3/2025
AVAILABLE BEFORE 11/3/2025


    

Gain Hands-On Experience. Support Plant Reliability.
Capitol Aggregates is seeking an Electrical Intern to join our Cement Plant operations. Under the direction of the Electrical Supervisor and Manager, this role will assist with maintaining, troubleshooting, and repairing electrical systems in an industrial environment. The position offers practical experience in electrical maintenance while supporting safe and reliable plant operations.


What You’ll Do

  • Install, repair, maintain, and adjust indicating, recording, and controlling instruments used in production.

  • Disassemble malfunctioning instruments, test mechanisms and circuitry for defects, and repair or replace defective parts.

  • Troubleshoot electrical plant equipment, including switchgear, motors, AC/DC control circuits, and PLC interfaces.

  • Inspect, calibrate, and test equipment to ensure compliance with specifications and coordinate with the control room daily.

  • Assist with building and implementing logic programs in plant equipment control schemes.

  • Work with electrical staff to perform preventative maintenance on plant equipment.

  • Perform electrical construction tasks such as conduit bending, cable runs, and installations in compliance with NEC.

  • Safely support plant operations by following company and MSHA safety policies, rules, and procedures.

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


What You’ll Bring

  • Proficiency with Microsoft Office.

  • Ability to read and follow ladder diagrams and basic ladder logic.

  • Strong problem-solving skills and willingness to learn advanced troubleshooting techniques.

  • Clear verbal and written communication skills with the ability to work collaboratively with plant teams.


Education & Experience

  • Currently enrolled in a degree program in Electrical Engineering, Industrial Engineering, or a related field.


Other Qualifications

  • Knowledge of PLC programming, pneumatic and hydraulic circuits is helpful but not required.

  • Ability to understand and follow instructions while maintaining a focus on safety.

  • Strong organizational skills and a proactive attitude in completing assigned work orders.


Why You’ll Love This Job

✔ Hands-on industrial experience in a real-world cement plant environment.
✔ Exposure to advanced electrical systems, controls, and troubleshooting.
✔ Mentorship and learning opportunities from experienced supervisors and engineers.
✔ Safety-first, supportive, and team-oriented culture.


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 are at the center of every decision we make:

Every Person Matters

Together We Can Do Great Things

This is More Than a Job

Capitol Aggregates offers an industry leading benefits package for our employees and their families.

  • Medical, Dental, Vision and Life Insurance
  • 401K
  • Paid Leave
  • Incentive Compensation Program
  • Company-paid short-term and long-term disability insurance
  • Employee assistance program (EAP)
  • Tuition Reimbursement
  • And many more

We are an Equal Opportunity Employer.  All qualified applicants will receive consideration for employment without regard to race, color, sex, sexual orientation, gender identity, religion, national origin, disability, veteran status, or other legally protected status.

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 his/her designee. No other Capitol employee is authorized to bind Capitol to any agreement regarding placement of candidates by Agency.

Equal Opportunity Employer, including disabled and veterans.

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