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Simplot

Senior Process Engineer Frontier (Pocatello, ID)

Pocatello, ID, United States

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Job details

Experience: Minimum 10 years of experience in sulfuric acid production or closely related heavy chemical manufacturing processes.
Posting language: English
Posted: Oct 30, 2026

Original job description

For more than 90 years, Simplot Company has grown as a family-owned, privately held global food and agriculture company. Our diverse businesses span agriculture, food production, manufacturing, mining, plant and animal sciences, ranching and cattle production, logistics, and transportation, connecting many of the essential steps that bring food from the earth to communities around the world.

That diversity creates strength, stability, and opportunity. Across our global business, employees can build new skills, explore different career paths, and contribute to meaningful work in a culture where safety is foundational.

Whatever your role, your work at Simplot contributes to something bigger. Join us to grow your career, make an impact, and help shape the future of food and agriculture. Summary

The Senior Process Engineer - Sulfuric Acid, serves as the subject matter expert for sulfuric acid production within the Simplot Mining & Manufacturing Division. This position provides technical leadership and strategic support for sulfur burning, conversion, absorption, acid handling, steam generation, and emissions control systems across the organization. The primary responsibility is the development, implementation, and support of optimization, reliability, environmental, and process safety strategies that improve plant performance while ensuring safe and sustainable operations. The role works closely with operations, maintenance, reliability, environmental, and capital project teams to maximize throughput, energy efficiency, equipment reliability, and environmental compliance.

Key Responsibilities

Technical Leadership

Serve as the division's technical authority for sulfuric acid production processes, including sulfur combustion, gas conversion, absorption systems, acid circulation, and associated utility systems.
Develop and implement best practices for sulfuric acid production, handling, storage, and distribution across Mining & Manufacturing operations.
Provide technical leadership during plant upsets, complex troubleshooting events, and major reliability issues.
Mentor and develop process engineers and operations personnel.

Process Optimization & Reliability

Evaluate process performance and identify opportunities to improve safety, reliability, throughput, energy efficiency, and product quality.
Lead process optimization initiatives involving converter performance, acid plant energy recovery, steam systems, emissions reduction, and sulfur utilization efficiency.
Monitor and evaluate key process metrics including sulfur conversion efficiency, SO₂/SO₃ emissions, acid strength, steam generation, and overall plant capability.
Develop and support reliability improvement strategies for critical process equipment.
Process Safety & Environmental Compliance

Process Safety & Environmental Compliance

Provide technical leadership and support for Process Safety Management (PSM) activities, including:
Process Hazard Analyses (PHA)
Management of Change (MOC)
Incident Investigations
Process Safety Information (PSI)
Operating Procedure Development
Participate in root cause analyses and incident investigations.
Support environmental permitting, compliance, and regulatory initiatives.
Develop strategies to improve environmental performance and reduce plant emissions.

Capital Projects & Debottlenecking

Lead process engineering support for capital projects, debottlenecking initiatives, and major maintenance efforts.
Provide technical oversight for process design deliverables including:
Process Flow Diagrams (PFDs)
Piping & Instrumentation Diagrams (P&IDs)
Heat and Material Balances
Equipment Specifications
Control Narratives
Operating Procedures
Support project definition, detailed design, startup, commissioning, and performance testing activities.

Operations Support

Provide day-to-day technical support to operations and maintenance personnel.
Support turnaround planning and execution activities.
Identify and implement continuous improvement opportunities.
Collaborate with site leadership to establish long-term operating and reliability strategies.

Typical Education

Bachelor's Degree in Chemical Engineering or related technical discipline.

Relevant Experience

Minimum 10 years of experience in sulfuric acid production or closely related heavy chemical manufacturing processes.
Strong understanding of:
Sulfur burning systems
Gas conversion
Absorption towers
Acid circulation systems
Heat recovery and steam generation systems
Emissions control technologies
Working knowledge of:
OSHA Process Safety Management regulations
Environmental compliance and permitting requirements
Root Cause Analysis methodologies
Process Hazard Analysis techniques

Other Information

Preferred:

Experience with phosphoric acid manufacturing and sulfuric/phosphoric acid integration.
Experience supporting large capital projects and plant startups.
Proficiency with process simulation and modeling software such as CHEMCAD, Aspen Plus or Aspen HYSYS.
Experience managing technical aspects of turnarounds and major outages.

Location / Travel:

This position reports to the Director of Process Engineering based in Pocatello, Idaho.
Primary work location will be the Don Plant in Pocatello, Idaho, and Rock Springs, WY.
Position will provide support to sulfuric acid operations and related process units across the Mining & Manufacturing Division as needed.
Travel is expected to be approximately 25-40%, depending on project assignments and facility support requirements.

Job Requisition ID: 27785

Travel Required:

Location(s): ABW Frontier Office - Pocatello

Country: United States

**The Simplot Company is proud to be an Equal Opportunity Employer and will consider all qualified applicants for employment without regard to race, color, religion, national origin, ancestry, age, sex, gender, gender identity, gender expression, genetic information, physical or mental disability, medical condition, sexual orientation, military or veteran status, marital status, or any other protected status.

If the Simplot Company decides to offer you this position, such offer will be conditioned on your satisfactory completion of a post-offer criminal background check. For Washington Job Applicants, see the Washington State Attorney General’s Washington Fair Chance Act Guide and RCW 49.94.010 for more information.**

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More about this job

Skills

Production processes
Leadership
Troubleshooting
Energy efficiency
Regulatory compliance
PSM
Process engineering
Design process
Technical support
Process improvement
Chemical engineering
Manufacturing processes
Root cause analysis
ASPEN PLUS

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