Roeslein Renewables , a division of Roeslein & Associates, develops and operates Renewable Natural Gas (RNG) projects across the United States. Headquartered in St. Louis, Missouri, the company partners with landowners, farmers, and communities to reduce on-farm emissions, restore native prairies, and deliver long-term value through regenerative energy solutions. Our team captures biogas from agricultural waste and upgrades it into RNG for pipeline injection. With more than 30 RNG projects completed across multiple states, the company is recognized for its commitment to environmental stewardship and innovation. We value integrity, professionalism, and transparency—and we never stop asking, “What more can we do?”

Position Summary
The Process Engineer IV will be responsible for managing new project development, optimizing existing operating assets, and leading other process engineers. Process development will span many sectors including Oil & Gas, Refineries, Pharma, and Alternative Energy. Work will include development of Process Flow Diagrams (PFDs), Material Balances, Process & Instrumentation Diagrams (P&IDs), process simulations, equipment datasheets, and calculations to support projects. This role will also drive improvements in work processes, lead operations support, monitor environmental impact, develop dashboards and training tools, and identify and implement process optimization projects.

Essential Duties and Responsibilities

Engineering – provide process support for new projects, including:

• Develop process simulations and new models for complex projects
• Develop material and energy balances for complex projects
• Lead development of process flow diagrams (PFDs) and process & instrumentation diagrams (P&IDs)
• Manage process requirements for equipment selection
• Act as subject matter expert for process engineering in Hazard and Operability Studies (HAZOPs)
• Manage project permitting with clients
• Coordinate and lead shop inspection, field commissioning, and start-up of projects
• Manage technology selection or develop new technology as needed
• Coordinate proposal development for new projects
• Lead improvements in work processes
• Develop subject matter expertise in needed key areas
• Participate in internal and external project meetings

Operations – support existing operating units, including:

• Update P&IDs as required
• Manage Management of Change (MOC) protocols
• Optimize existing units to improve performance and reduce energy consumption
• Manage implementation of improvement projects at existing facilities
• Support environmental services reporting and develop tools for new markets
• Partner with Operations to lead troubleshooting and determine root causes
• Mentor and lead other process engineering team members

Other Duties and Responsibilities

• Conduct activities in a safe and healthy manner and work in accordance with established safety and company requirements
• Promote a positive working environment in order to achieve the organization’s goals
• Travel domestically and internationally, ranging from 10–20% per year, with potential for increased travel during project start-up periods
• Perform other duties as assigned

Work Environment
Work is performed in an office and uncontrolled atmosphere. Exposure to harsh conditions is possible for short periods of time—such as: dust, fumes, chemicals, hazardous materials, noise, and varying weather and temperatures. All employees are required to follow safety standards and wear all personal protective equipment in designated areas.

Physical Demands
While performing the duties of this position, the employee will regularly be required to walk, stand, use hands and fingers, grip, handle or feel; reach with hands and arms; climb or balance; stoop, kneel, crouch or crawl; talk and hear; and work in a consistent state of alertness and in a safe manner. Ability to lift and carry 25 lbs. on a regular basis is required.

Skill / Knowledge / Ability / Education / Experience

Required:

• Excellent communication skills, both oral and written
• Strong analytical and problem-solving skills
• Process simulation development skills
• Process knowledge of PFDs and P&IDs
• Experience leading project development
• Computer skills and an in-depth knowledge of Microsoft Windows-based programs
• Must have a valid driver's license and maintain an acceptable motor vehicle record
• Must be at least 21 years of age

Preferred:

• Bachelor’s degree from an accredited university in Chemical Engineering
• 8-15 years of experience in process engineering
• EIT registration or desire to obtain Professional Certification
• Operations experience with process optimization and implementing improvement projects
• Experience with Management of Change (MOC)
• Experience with environmental monitoring and reporting (i.e., Low Carbon Fuel Standard (LCFS), Renewable Identification Number (RIN) generation, etc.)
• Experience evaluating new technology
• Experience managing and developing small teams
• Strong process, mechanical and electrical aptitude and hands-on experience

Keys to Success:

• Effective time management skills across multiple projects, personal conduct, and change management abilities
• Ability to effectively interact with co-workers, operations, clients, vendors, and other business contacts
• Compliance with Roeslein & Associate’s core values for the safe and efficient operation of the business and maintaining sound relationships among and with employees

Benefits & Additional Information

At Roeslein, we invest in our team members' success and well-being. Full-time employees are eligible for competitive wages, bonus program, paid time off, personal and recovery days, travel bonuses, and paid holidays. Our retirement benefits include a 401(k) with company match and an ESOP (Employee Stock Ownership Program). We also offer medical, dental, and vision coverage, short and long-term disability insurance, life and travel insurance, and paid parental leave. Additionally, we support your growth with tuition reimbursement and continuing education opportunities to help you achieve your personal and professional goals.

Roeslein & Associates is an Equal Opportunity Employer.

The job description may not necessarily contain all of the actual or essential duties of this position. All job offers are contingent upon passing a drug screen and criminal background check.

Required Skills

Required Experience

Bachelors with minimum 15 years experience or Masters with minimum 12 years of experience