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Diesel Engine Aftertreatment Performance Engineer

LER TechForce
Columbus, IN Full Time
POSTED ON 4/23/2026
AVAILABLE BEFORE 5/22/2026
Are you looking for a role where you can use your knowledge of engine and/or aftertreatment performance to make a difference in the automotive industry and the environment? Would you like to work for a company that provides an innovative work environment, flexible schedules, and ongoing professional development?

Who we are:

LER TechForce is an industry leader in embedded controls, software, functional safety, and engineering talent. For over 20 years LER has been working with customers across North America to meet their engineering resource challenges. Learn more about us (3) LER TechForce: Life | LinkedIn

Job Location: Local to Columbus, IN area and capable to travel into building depending on project needs, approximately 2-3 days in the office weekly.

What you will be doing:

This role supports two primary functions, the Catalyst, Performance and Integration (CPI) team, and the Aftertreatment Integration (ATI) team. Both functions support on and off-highway after-treatment systems for engines ranging in size from 2.8L to 95L.

The Catalyst, Performance and Integration (CPI) team requires support in developing test plans, executing test plans, data analysis, data quality checks, generating technical reports on testing performed to support the following objectives:

  • Catalyst Portfolio Strategy
  • Performance boundary mapping
  • Base calibration development
  • Product & process release for C/P/I

The Aftertreatment Integration (ATI) group requires support in developing emissions after-treatment software features and diagnostic calibrations for on and off-highway programs. Objectives include calibration development suThe engineer will be responsible for completing feature and diagnostic reviews, following the corporate calibration process. Other objectives include:

  • Calibration Development Support
    • Create software feature and diagnostic calibrations for on and off-highway programs following the Corporate calibration process.
    • Create supporting documentation for software feature and diagnostic changes
    • Perform bench testing on feature and diagnostic calibrations to validate functionality
    • Present feature and diagnostic reviews in calibration integration forums and OBD forums
    • Investigate software and integration issues observed in the test cell and/or field and address any FIRGs associated with these features and diagnostics.
  • Field Performance Analysis Support
    • Review field data using FPA console and generate weekly/bi-weekly reports of EAS behavior.
  • Early production and production-phase SCR over-temperature diagnostics reviews and dew point feature subject to availability of field test data.
  • Early production and production -phase DOC, DPF, SCR over-temperature, PM sensor diagnostic reviews and NOx sensor diagnostic & feature reviews
  • Back up relevant information with shared access for stakeholders, CTR's for applicable DVP&R updates, deliverables tracking on Integrity (upload)

What you'll need to be successful:

  • College, university, or equivalent Bachelor's degree in Engineering or other relevant technical disciplines.
    • Mechanical Engineering degree HIGHLY preferred
    • A mechanical/chemical engineering background with a masters of science or PhD is preferred
  • 2 or more years of hands-on experience
  • Ability to analyze/interpret large sets of data is required
  • MATLAB Plotting and analysis is required.
  • MS office suit solid knowledge is required.
  • Calibration of engine or aftertreatment features/monitors
  • Engine or aftertreatment performance
  • Humble, teachable, and who solve their own problems
  • Effective and collaborative team player
  • Good communicator - written and verbal
  • Great collaborator
  • Experience working in the automotive/truck industry and knowledge of aftertreatment systems is considered ideal.

What you'll get:

  • Full benefits: medical, dental, vision
  • 401K with a match and immediate vesting
  • Short-term & Long-term disability, life insurance and other optional benefits
  • Employee Assistance Program
  • Employee Discounts
  • Ongoing professional development opportunities including Technical Training and Leadership Development
  • The opportunity to work on industry leading projects

Click the Easy Apply button to learn more.

Salary.com Estimation for Diesel Engine Aftertreatment Performance Engineer in Columbus, IN
$171,839 to $213,381
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