Senior Process Engineer

Triumvirate Environmental•Casa Grande, AZ

1d•Onsite

About The Position

Triumvirate Environmental is seeking a Senior Process Engineer for its plant in Casa Grande, Arizona. The role leads the development, optimization, and technical support of treatment, recovery, and disposal processes at a hazardous waste facility. The engineer works independently on complex process improvements, leads mid- to large-scale projects, and guides junior engineers. In partnership with operations, EHS, and quality teams, the role improves safety, throughput, and cost performance while maintaining compliance with applicable federal, state, and local regulations. The position reports to the Vice President of Disposal. It involves frequent handling of hazardous chemicals and biological waste, as well as putting on and taking off personal protective equipment. It is classified as safety-sensitive and requires work in a plant environment. The engineer must be able to report to a designated office within one hour during Emergency Response rotating shifts. Rotating on-call participation on the Emergency Response team is optional.

Requirements

Bachelor’s degree in chemical, environmental, or mechanical engineering, or a related field.
10 years of process engineering experience, or 2 to 3 years in a senior process engineering role, in a regulated industry.
Strong working knowledge of RCRA and OSHA hazardous waste operations requirements.
Hands-on familiarity with facilities operated using PLC/HMI and SCADA control systems.
Demonstrated skill in data analysis, mass and energy balances, and process troubleshooting.
Ability to develop and review P&IDs and process documentation.
Proficiency with Microsoft Office and engineering tools such as AutoCAD or process simulation software.
Willingness to work in a plant environment and wear required PPE, including respiratory protection.
Must be eligible to work in the United States without future sponsorship.
Must have a reliable form of transportation.
Must consent to a Motor Vehicle Record screening, criminal background check, pre-employment physical, and drug screen, including THC.
Must participate in a random drug screening program, including THC, after employment.
Must be able to lift 60 pounds on a regular basis.
Must be willing to work flexible hours within the Monday-through-Friday work week.
Must be able to report to the designated office within one hour during Emergency Response rotating shifts.
Must be willing to handle hazardous chemicals and biological waste and put on and take off personal protective equipment.

Nice To Haves

Hazardous waste, chemical, or petrochemical experience.
Prior relevant industry experience.
Active HAZWOPER 24- or 40-hour certification.
Willingness to obtain a Commercial Driver’s License (CDL).

Responsibilities

Lead evaluation, design, and improvement of waste treatment processes, including neutralization, filtration, separation, stabilization, fuel blending, and thermal treatment.
Analyze waste stream characteristics and determine treatment, blending, and feed strategies.
Use process data to identify bottlenecks and improve cost, yield, efficiency, and reliability.
Develop and drive technology upgrades and commercialization efforts.
Provide expert technical support and lead troubleshooting of equipment and process upsets.
Support new waste stream approvals by reviewing profiles, laboratory data, and compatibility.
Develop and maintain standard operating procedures and work with supervisors to train operators.
Lead capital projects from concept through design, specification, commissioning, and startup, meeting time, budget, safety, and environmental targets.
Prepare and review P&IDs, process flow diagrams, mass and energy balances, and equipment specifications.
Work with controls and instrumentation teams on process control improvements.
Support compliance with RCRA, EPA, OSHA (including PSM where applicable), DOT, and state permit requirements.
Lead process hazard analyses (HAZOPs), management of change (MOC), pre-startup safety reviews, and incident investigations.
Help prepare permit modifications, regulatory reports, and responses to agency inspections.
Mentor and guide process engineers and engineering interns.
Serve as a technical resource for plant management and cross-functional teams.
Participate in the Emergency Response team’s rotating on-call responsibilities if desired.