Sr. Refinery I&E Technician

Allegiance Refining LLC; San Antonio (TX); On-site; USD 60,000 - 80,000; Full time

Job summary

A leading refining company in San Antonio seeks a skilled Refinery Instrumentation and Electrical (I&E) Technician. The ideal candidate has over 4 years of electrical maintenance experience in industrial settings and is responsible for diagnostics, repair, and calibration of instrumentation and electrical systems. This role emphasizes safety and operational reliability. A High School diploma or GED is required, with additional technical education preferred. The position offers opportunities for professional growth and development in a dynamic environment.

Qualifications

• 4+ years electrical maintenance experience in an industrial/refinery setting.
• Familiarity with refinery process controls and hazardous area instrumentation.
• NCCER certification is preferred.

Responsibilities

• Perform diagnostics, maintenance, and repair of instrumentation and electrical systems.
• Install and commission instrumentation, control devices, and electrical components.
• Lead efforts in root cause analysis and reliability improvements.
• Calibrate and maintain process control instrumentation.

Skills

Electrical maintenance experience

Troubleshooting electrical circuits

Proficient in instrumentation devices

Excellent communication skills

Technical assistance and troubleshooting

Education

High School Graduate or GED

2-year Technical School or associate’s degree

Instrumentation and/or Electrical Journeyman’s license

Tools

Microsoft Office

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 Refinery Instrumentation and Electrical (I&E) Technician.

Job Duties and Responsibilities

• Perform advanced diagnostics, maintenance, calibration, and repair of instrumentation and electrical systems supporting refinery operations.
• Serve as a subject matter resource for troubleshooting control systems, field instrumentation, and electrical distribution issues, minimizing downtime and improving system reliability.
• Install, configure, and commission instrumentation, control devices, and electrical components, ensuring alignment with engineering specifications and industry standards.
• Lead efforts in identifying root causes of equipment and system failures, implementing corrective actions and long‑term reliability improvements.
• Test instrumentation and electrical systems and continuity of circuits in electrical wiring, equipment and fixtures, using testing devices such as multi‑meters and power meters to ensure compatibility and safety of system.
• Support, maintain, and optimize Distributed Control Systems (DCS), with strong working knowledge of HART and Foundation Fieldbus communication protocols using field communicators.
• Calibrate, maintain, and optimize process control instrumentation including flow, pressure, temperature, and level devices, as well as control valves and DCS systems.
• Interpret and work from P&IDs, loop drawings, wiring diagrams, and technical documentation to support maintenance, modifications, and system upgrades.
• Operate, maintain, and troubleshoot process analyzers such as gas chromatographs, pH analyzers, moisture analyzers, and elemental analyzers.
• Conduct regular calibration and validation of analyzers to ensure precise process data for operational and quality assurance purposes.
• Interpret and work from P&IDs, loop drawings, wiring diagrams, and technical documentation to support maintenance, modifications, and system upgrades.
• Maintain accurate documentation of maintenance activities, calibration records, and system changes.
• Collaborate with operations, engineering, and maintenance teams to improve process performance, reliability, and safety.
• Participate in call‑out rotation and support critical operations during off‑hours as required.

Requirements

• High School Graduate or GED.
• 2‑year Technical School or associate’s degree preferred.
• 4+ years electrical maintenance experience in an industrial/refinery setting.
• Instrumentation and/or Electrical Journeyman’s license is preferred.
• Familiarity with refinery process controls and hazardous area instrumentation requirements.
• Proficient in troubleshooting electrical circuits, instrumentation devices, and analyzer systems.
• NCCER certification is preferred.
• 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 walk, sit, talk and hear.
• Occasionally required to stand; use hands to grasp, handle or feel, reach with hands and arms; and may occasionally be required to climb, balance, stoop, kneel, crouch or crawl.
• Occasionally 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. Ability to judge distances and spatial relationships.
• Pulmonary function level must be adequate for supplied breathing air certification.

Experience & Skills

• Experienced in electrical skills.
• Excellent verbal, written and interpersonal communication skills.
• Provide technical assistance and troubleshooting expertise. 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 (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.