# (1120165) Catalyst Performance Engineer - Aftertreatment Systems

- **Company:** Diversified Services Network, Inc.
- **Location:** Mossville, IL, US (Not specified)
- **Salary:** Salary not disclosed
- **Contract:** Full-time
- **Posted:** 2026-11-06

## Job description

Catalyst Performance Engineer - Aftertreatment Systems
Mossville, IL
Diversified Services Network, Inc. (DSN) is seeking a full-time Aftertreatment Systems Development Engineer to join our team in Mossville, IL. We offer full benefits, PTO, 401k, and more! If you're looking to grow your career within an extremely reputable, stable Fortune 100 company - let's talk!
Position Overview
The Aftertreatment Systems Development Engineer advances the development and application of aftertreatment systems for diesel engine programs. This role combines catalyst simulation, system analysis, and validation testing to guide product development decisions.
Key Responsibilities
• Perform catalyst performance modeling and sizing for aftertreatment applications
• Evaluate catalyst sizing alternatives and aftertreatment capability across a range of operating conditions
• Analyze t est-cell and field data to assess aftertreatment performance
• Combine simulation results with experimental data to identify performance gaps and recommend technical solutions
• Support catalyst and aftertreatment system selection, sizing, and application decisions
• Communicate results and issues to team members, suppliers, and engine system development partners
Requirements
Qualifications
Required
• Bachelor's degree in Engineering, Materials Science, Chemistry, or a related field from an accredited program, and 2–4 years of engineering experience
• Experience with engine or aftertreatment testing
• Knowledge of catalyst technology
• Background in product design and development
• Strong analytical thinking and problem-solving skills
• Excellent verbal and written communication skills, including the ability to convey technical information to team members, other departments, customers, and suppliers
• Ability to manage multiple priorities and adapt to changing demands
• Quick learner
Preferred
• Proficiency with data analysis tools
• Experience with engine and/or aftertreatment performance data reduction and analysis
• Strong understanding of engine and aftertreatment systems
• Ability to draw conclusions from analysis and make sound technical decisions
• Excellent interpersonal and collaboration skills
• Self-starter with strong technical leadership skills
Benefits
401(k)
Dental insurance
Vision Insurance
Disability insurance
Employee assistance program
Health insurance
Health savings account
Life insurance
Paid time off
Paid Holidays
Please follow the link to our website for a list of job openings in Engineering, IT, Project Management, and more! https://www.dsnworldwide.com
Salary expectations: 70,000-78,000 per annual

[Apply on the company site](https://www.joonow.com/en/job/1120165-aftertreatment-systems-development-engineer-mossville-il-b851bxxf15/apply)