Millwright / Plant Maintenance

Maintain Reliability and Support Safe, Efficient Cement Production
Capitol Aggregates is seeking a skilled and safety-focused Plant Mechanic to support our Cement Division in San Antonio, Texas. This essential role is responsible for performing mechanical maintenance, repairs, and inspections to ensure safe and reliable operation of equipment across the facility. The ideal candidate brings a hands‑on mindset, mechanical aptitude, and the ability to troubleshoot issues in a fast‑paced industrial environment. Perform mechanical maintenance and repairs on cement plant equipment including pumps, compressors, conveyors, and fans.

Use precision tools to ensure accurate alignment, torque, and tension when repairing or installing parts.

Complete tasks according to best‑demonstrated practices with a focus on safety and quality.

Communicate job findings and updates to supervisors, including documentation of parts used and potential improvements.

Maintain a clean work area, follow plant schedules, and participate in area audits and inspections.

Follow all company and MSHA safety regulations while working in varied environmental conditions.

Support plant operations by reducing equipment downtime and improving equipment reliability.

Strong mechanical aptitude and experience using industrial hand tools and measuring instruments.

Basic welding and oxy‑acetylene cutting skills.

Ability to read mechanical drawings and technical documentation.

Forklift operation experience and understanding of safe work practices.

High school diploma or GED preferred.

Minimum of 2 years of mechanical maintenance experience in an industrial or heavy manufacturing setting.

Prior experience as a Maintenance Technician or Lubricator Technician is helpful.

Familiarity with personal protective equipment and safe industrial work procedures.

High‑impact role supporting essential plant operations

• Opportunities to grow mechanical skills and cross‑train with a skilled maintenance team
• 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. Medical, Dental, Vision and Life Insurance

Company‑paid short‑term and long‑term disability insurance

Employee assistance program

Tuition Reimbursement

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. 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. 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.

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