Sr. Maintenance Mechanic

Allegiance Refining LLC; San Antonio (TX); On-site; USD 65,000 - 85,000; Full time

Job summary

Allegiance Refining LLC is seeking a skilled Sr. Maintenance Mechanic to oversee the installation and maintenance of industrial equipment at The San Antonio Refinery. The role includes ensuring safe operation, performing troubleshooting and maintenance, and developing work scopes.

Qualified candidates will have at least 8 years of experience and NCCER certification. This position offers competitive opportunities and is located in San Antonio, Texas.

Qualifications

• 8 years of work-related experience, with 3+ years in refining or petrochemical process plant.
• NCCER certification in Industrial Maintenance Mechanic or Millwright required.
• Strong written and verbal communication skills.

Responsibilities

• Support servicing and maintaining dynamic equipment, including motors and pumps.
• Perform regular preventative and corrective maintenance.
• Troubleshoot and maintain valves and conduct inspection documentation.

Skills

Communications

Troubleshooting

Technical Assistance

Attention to Detail

Education

High School Graduate or GED; Technical or Associate’s degree preferred

Tools

CMMS systems

Precision measuring tools

Various refinery equipment

Job description

Allegiance Refining, LLC is located in San Antonio, Texas. We operate by three tenets:

Safety: We aim for everyone to go home safely every day and strive for an accident and incident‑free workplace.

Stewardship: We are stewards of the assets we operate and are committed to being safe and environmentally responsible.

Service: We strive to provide first‑class service to our customers.

PURPOSE AND ROLE

Allegiance Refining, LLC, operator of The San Antonio Refinery is a PSM facility seeking a skilled Sr. Maintenance Mechanic to oversee the installation and maintenance of our industrial equipment. As a maintenance technician, you will be responsible for ensuring the safe operation and maintenance of our production equipment. This will include installing new equipment, performing regular preventative, predictive, and corrective maintenance as well as troubleshooting equipment breakdowns to the highest quality.

JOB DUTIES AND RESPONSIBILITIES

• Support servicing and maintaining dynamic equipment of motors, pumps, bearings, couplings, and turbomachinery, but not limited to
• Support installation and troubleshooting of mechanical seals and seal systems
• Provide technical assistance and troubleshooting expertise; basic general vehicle troubleshooting and maintenance skills a plus; trend analysis and pattern recognition.
• Reading and interpreting blueprints, PFDs, P&IDs, ISOs, etc.
• Troubleshoot and maintain valves to include gasket and packing replacement.
• Use and demonstrate knowledge of test instruments such as tachometers, pyrometers, strobe meters, laser alignment, other automated diagnostic tools.
• Use of precision measuring tools.
• Material handling and rigging including the knowledge and use of standardized crane hand signals.
• Mobile equipment uses such as forklifts, man lifts, compressors, and generators.
• Enter work request and provide feedback for work order close out.
• Thorough completion of inspection and repair documentation as required by, but not limited to PSM.
• General knowledge of various refinery equipment such as heat exchangers, vessels, drums, heaters, piping circuits, and etc.
• Work scope development for equipment repairs and overhauls.
• May be required to work flexible work hours; on‑call duty, plant outages.
• Maintain a clean work environment.

REQUIREMENTS

• High School Graduate or GED; Technical School or Associate’s degree preferred.
• Minimum 8 years of work‑related experience.
• At least 3+ years in a refining or petrochemical process plant with operations or PSM experience.
• NCCER certification in Industrial Maintenance Mechanic or Millwright.
• This includes advanced proficiency in compressor maintenance, installation of motors, troubleshooting and repair of pumps, gearboxes in a refinery and terminal work environment.
• Experience using CMMS systems.
• Attention to detail; highly organized, self‑motivated, self‑starter, and able to work with minimal supervision.
• Ability to communicate with all levels of the organization.
• Must be a team player and possess the ability to support a team effort.
• Legally authorized to work in US, in compliance with the Federal Immigration Reform and Control Act.

PHYSICAL DEMANDS

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. While performing the duties of this job, the employee is:

• Regularly required to stand; use hands to grasp, handle or feel, reach with hands and arms; and regularly required to climb, balance, stoop, kneel, crouch or crawl.
• Regularly lift and/or move up to 50 pounds.
• Specific vision abilities required by this job include close vision, color vision, peripheral vision, depth perception and ability to adjust focus.
• Regularly working in elevated ambient temperatures.

EXPERIENCE & SKILLS

• Excellent verbal, written and interpersonal communication skills.
• Provide technical assistance and troubleshooting expertise; basic general vehicle troubleshooting and maintenance skills a plus; trend analysis and pattern recognition.
• Must be well organized, skilled in Microsoft Office, with the ability to write detailed reports and organize data.

Allegiance Refining, LLC operates (The San Antonio Refinery “TSAR”) offers equal employment opportunity and treatment to all qualified applicants regardless of race, color, religion, sex, national origin, or any other protected status.