Senior Process Engineer

Triumvirate Environmental•Casa Grande, AZ

2d•Onsite

About The Position

Triumvirate Environmental is seeking a Senior Process Engineer for its hazardous waste facility in Casa Grande, Arizona. The role leads the development, optimization, and technical support of treatment, recovery, and disposal processes. The engineer independently handles high-complexity process improvements, leads mid- to large-scale projects, and guides junior engineers. In partnership with operations, EHS, and quality teams, the role works to improve safety, throughput, and cost performance while maintaining compliance with federal, state, and local regulations. The position reports to the Vice President of Disposal. The Senior Process Engineer designs and optimizes processes including neutralization, filtration, separation, stabilization, fuel blending, and thermal treatment; analyzes waste streams and treatment strategies; troubleshoots equipment and process issues; and leads capital projects through commissioning and startup. The role also supports regulatory compliance, process safety reviews, operational training, and technical guidance for plant management and cross-functional teams. This is an onsite, safety-sensitive plant position involving frequent handling of hazardous chemicals and biological waste and the use of personal protective equipment, including respiratory protection. The role requires regular lifting of up to 60 pounds and flexible hours Monday through Friday. Rotating on-call Emergency Response responsibilities are optional; those who participate must be able to report to a designated office within one hour during their rotating shifts. Applicants must be eligible to work in the United States without future sponsorship and must have reliable transportation. Screening requirements include consent to motor vehicle record screening, a criminal background check, a pre-employment physical, and a drug screen inclusive of THC; employees are also subject to random drug screening inclusive of THC.

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 reliable transportation.
Must consent to motor vehicle record screening, criminal background check, pre-employment physical, and drug screen inclusive of THC; employment also requires participation in random drug screening inclusive of THC.
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.
For rotating Emergency Response shifts, must be able to report to the designated office within one hour.
Must be willing to participate in optional rotating on-call Emergency Response responsibilities if choosing to do so.

Nice To Haves

Hazardous waste, chemical, or petrochemical industry 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 establish 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 SOPs 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.
Optionally participate in rotating on-call Emergency Response responsibilities.