Controls Technician

Mariana Minerals; Joaquin (TX); On-site; USD 65,000 - 95,000; Full time

Job summary

Mariana Minerals is seeking a Controls Technician to provide electrical and controls support for refinery operations. The role involves troubleshooting, testing, and maintaining electrical systems up to 480V, three-phase & single-phase AC circuits, transformers, switchgear, and motor control centers.

The technician will execute preventive maintenance, upgrade electronic control systems, and ensure compliance with safety codes.

Qualifications

• 3–5 years of manufacturing maintenance experience focused on controls and electronics.
• Proficiency with Allen Bradley PLCs, VFDs, HMIs, and industrial networks.
• Basic PLC knowledge and ability to use PLC software.
• Ability to read wiring schematics, one-line diagrams, and blueprints.
• Experience with SLC 500, ControlLogix, PanelView Plus, and VFDs.
• Strong safety awareness and compliance with electrical codes.

Responsibilities

• Read blueprints and diagrams to install outlets, circuits, and control equipment.
• Test electrical connections after installation to ensure safe operation.
• Troubleshoot and diagnose electrical and control issues in industrial equipment.
• Perform preventive maintenance on electrical and control systems.
• Maintain MCCs, switchgear, robots, transformers, and generators.
• Update CMMS with maintenance records and job reports.
• Collaborate with operators and engineers to address hazards.

Skills

Allen Bradley PLCs

VFDs

HMIs

Industrial Networks

Job description

About Mariana Minerals

Mariana Minerals is a software-first, vertically integrated minerals company on a mission to supply the critical minerals powering modern energy, AI, and defense technologies. We’re reimagining the minerals supply chain by combining deep industry expertise with advanced software, automation, and data-driven decision-making.

Position Summary

The role of the Mariana Minerals Controls Technician is to provide competent and effective electrical and controls support to Refinery operations. It is essential that work meets the needs of Operations and is executed to the Maintenance program while ensuring complicity to all safety codes. The Controls Technician must identify, troubleshoot and repair problems in electrical and controls wiring and programming that occur in production equipment and systems and able to work with voltages up to 480V, three-phase & single-phase A/C circuits, transformers, switchgear, and motor control centers. The Controls Technician must be able to run tests, isolate problems, replace faulty sections of wiring, and perform other tasks as necessary. This person will also perform preventive maintenance and upgrades to electronic control systems.

Key responsibilities

• Understand how to read and translate the information found within building and process blueprints and one-line diagrams to install outlets, circuits, load centers and other forms of electrical equipment

• After installing the electrical equipment, test all connections to ensure all components are working properly and safely.

• Troubleshoot and diagnose electrical and controls issues in industrial equipment and processes using experience, system knowledge and proper instruments appropriate to the voltages and currents encountered.

• Perform preventive maintenance on electrical and control systems to include disassembly, cleaning, reassembly, and calibration.

• Meet and follow local, state and national electrical codes.

• Maintain motor control centers (MCC’s), switchgear, industrial robots, electronic controllers on mechanized tools, as well as transformers and generators.

• Communicate with management, engineers, mechanics, and equipment operators to advise them if there are any potential electrical hazards.

• Execute the maintenance work schedule as provided by your supervisor. Proper execution of the work schedule will require strategic decisions to ensure the scheduled work will be completed within the period scheduled.

• Examine jobs to be done and determine scope and best way to accomplish the work. .

• Ensure the shop is maintained in a safe and orderly fashion. Ensure the safety needs are given a top priority in operations support and work execution.

• Update the computerized maintenance management system (CMMS) as necessary to maintain accurate plant asset historical records.

• Have complete knowledge of plant’s processes and packaging systems.

• Protect the integrity and quality of product at all times.

• Recommend equipment to be included in preventive maintenance programs.

• Suggest improvements to all maintenance processes, including planning scheduling, preventive maintenance, corrective maintenance, CMMS, storeroom operations, etc.

• Maintain close contact with assigned maintenance crew, the production supervisor and equipment production operator technicians.

• Maintain necessary records and files and distributes meaningful and accurate control reports.

Required Qualifications

• Preferred 3-5 Years of manufacturing maintenance experience focused on controls and electronics maintenance.

• Proficiency in controls equipment, i.e. Allen Bradley PLCs, VFDs, HMIs, and Industrial Networks required. Experience with various Human Machine Interfaces

• Basic Programmable Logic Control (PLC) knowledge required.

• Must be able to use a computer and associated PLC software programs

• Able to execute small and medium projects involving controls equipment such as SLC 500, Controls Logix, Panel View Plus and Allen Bradley VFDs

• Ability to follow manufacturers specifications and schematics.

• Able to read one-line diagrams, blueprints and schematics.

• Ability to read and interpret a variety of technical data, such as schematics, one-line diagrams, and technical orders relating to the electrical trade.

• Able to calculate electrical circuit load requirements.

• Comprehensive knowledge of the operation, capabilities, and limitations of complex electrical power and distribution.

• Maintenance background, which includes hydraulics, controls, electrical, PLC’s, machine tools and pneumatics

• Skill in troubleshooting electrical problems on large projects and applying test procedures.

• Skill in the use of hand and power tools of the electrician trade to include a variety of electronic, electrical, or electromechanical test and measurement equipment.

• Ability to test, calibrate, troubleshoot, overhaul, repair, and install complete electrical systems.

Desirable Qualifications

• Hydrometallurgy experience

• Mining experience

• Battery material experience

Our culture is built on four principles

Everyone Gets Home Safe. We never put speed or cost ahead of people.

Extreme Ownership. We take full responsibility for outcomes, relentlessly driving toward solutions.

Engineer Out Requirements, then Automate. We simplify, optimize, and then automate for scale.

Share Your Legos. We collaborate openly, share knowledge, and empower each other to build bigger, better solutions.

Join us as we build the future of responsible mineral sourcing and supply!