Senior Performance/Simulation/Application Engineer

Career Area: Engineering Job Description: Your Work Shapes the World at Caterpillar Inc. When you join Caterpillar, you're joining a global team who cares not just about the work we do – but also about each other. We are the makers, problem solvers, and future world builders who are creating stronger, more sustainable communities. We don't just talk about progress and innovation here – we make it happen, with our customers, where we work and live. Together, we are building a better world, so we can all enjoy living in it. Senior Performance Simulation Application Engineer Job Summary: The Aftertreatment & Exhaust Systems (AT&ES) organization is seeking a Senior Performance, Simulation, and Application Engineer to provide technical leadership across simulation, controls development, software integration, rapid prototyping, and validation of advanced aftertreatment systems and mechatronic components. This role will serve as a software lead for aftertreatment development, providing technical direction and coordinating software and calibration activities across programs. The engineer will develop and manage aftertreatment software schedules, track key software and calibration deliverables, identify execution risks, and work across the team to ensure calibrations and software releases are completed in alignment with program timing and validation needs. The position will also contribute to the development of high-level software and controls strategies. The engineer will develop and maintain rapid-prototyping software and simulation tools that enable efficient laboratory testing, accelerate early validation of emerging technologies, and support the selection and refinement of control strategies. Responsibilities include planning and executing testing of new components and technologies, including emissions sensors, dosing pumps, and other mechatronic devices, as well as performing co-simulation activities using Dynasty. Experience with GT-POWER is a plus. This position requires close collaboration with cross-functional engineering partners, including CATE and LPSD Mechatronics teams, to coordinate software, controls, calibration, development, and validation activities. The engineer will communicate program timing and technical status, review control strategies, resolve cross-functional issues, and ensure laboratory-developed software and controls solutions are successfully transitioned into production applications. What you will do: Serve as the aftertreatment software lead, coordinating software and calibration execution across development programs. Own and manage software schedules and key deliverables, maintaining alignment with program, test, and validation milestones. Drive calibration readiness, ensuring required calibrations are developed, reviewed, and delivered in time to support testing and program commitments. Develop high-level software and controls strategies that align system requirements, controls architecture, calibration development, and production needs. Identify software and calibration execution risks early and coordinate cross-functional actions to maintain program timing. Provide technical leadership across software, controls, simulation, calibration, and validation activities, helping drive issues from identification through resolution Education and Experience Requirements: Bachelor’s degree in an accredited Engineering, Computer Science, or Materials Science curriculum. Skills you will have: Process Management: Extensive knowledge of business process improvement tools and techniques; ability to understand, monitor, update, control, or enhance existing business or work processes. Accuracy and Attention to Detail: Extensive knowledge and understanding the necessity and value of accuracy; ability to complete tasks with high levels of precision. Analytical Thinking: Extensive knowledge of techniques and tools that promote effective analysis; ability to determine the root cause of organizational problems and create alternative solutions that resolve these problems. Effective Communications: Working knowledge and understanding of effective communication concepts, tools and techniques; ability to effectively transmit, receive, and accurately interpret ideas, information, and needs through the application of appropriate communication behaviors. Problem Solving: Extensive knowledge of approaches, tools, techniques for recognizing, anticipating, and resolving organizational, operational or process problems; ability to apply knowledge of problem solving appropriately to diverse situations. Technical Excellence: Working knowledge of a given technology and various application methods; ability to develop and provide solutions to significant technical challenges. Project Management: Basic knowledge of effective project management strategies and tactics; ability to plan, organize, monitor, and control projects, ensuring efficient utilization of technical and administrative resources to achieve project objectives. Computer-Aided Design & Engineering : Extensive knowledge of tools and techniques of specialized graphics programs; ability to produce, analyze, simulate and test product design drafts. Top Candidates Will Have: Aftertreatment experience Experience with NPI process Experience with Simulink Additional Information: This position is located in Mossville, IL. Domestic relocation assistance is available for this position. Visa sponsorship is not available for this position. Summary Pay Range: $112,710.00 - $169,060.00 Compensation and benefits offered may vary depending on multiple individualized factors, job level, market location, job-related knowledge, skills, individual performance and experience. Please note that salary is only one component of total compensation at Caterpillar. Benefits: Subject to plan eligibility, terms, and guidelines. This is a summary list of benefits. Medical, dental, and vision benefits* Paid time off plan (Vacation, Holidays, Volunteer, etc.)* 401(k) savings plans* Health Savings Account (HSA)* Flexible Spending Accounts (FSAs)* Health Lifestyle Programs* Employee Assistance Program* Voluntary Benefits and Employee Discounts* Career Development* Incentive bonus* Disability benefits Life Insurance Parental leave Adoption benefits Tuition Reimbursement * These benefits also apply to part-time employees This position requires working onsite five days a week. Relocation is available for this position. Visa Sponsorship is not available for this position. Posting Dates: November 5, 2026 - November 19, 2026 Any offer of employment is conditioned upon the successful completion of a drug screen. Caterpillar is an Equal Opportunity Employer, Including Veterans and Individuals with Disabilities. Qualified applicants of any age are encouraged to apply. Not ready to apply? Join our Talent Community .