First Principles Custom Process Modeling Lead

About us

At ExxonMobil, our vision is to lead in energy innovations that advance modern living and a net-zero future. As one of the world’s largest publicly traded energy and chemical companies, we are powered by a unique and diverse workforce fueled by the pride in what we do and what we stand for.

The success of our Upstream, Product Solutions and Low Carbon Solutions businesses is the result of the talent, curiosity and drive of our people. They bring solutions every day to optimize our strategy in energy, chemicals, lubricants and lower-emissions technologies. 

We invite you to bring your ideas to ExxonMobil to help create sustainable solutions that improve quality of life and meet society’s evolving needs. Learn more about our What and our Why and how we can work together .

What role you will play in our team

As one of the world’s largest publicly traded energy providers and chemical manufacturers, we develop and apply next-generation technologies to help safely and responsibly meet the world’s growing needs for energy and high-quality chemical products. Affordable and sustainable energy solutions are required to advance global prosperity. We invest in technology and communities to bring the world better energy. Within ExxonMobil Technology and Engineering Company, our teams leverage our world-class facilities to research and develop the energy solutions of tomorrow.


As a technical leader on the Process Innovation and Scale-Up team, you will be an integral contributor to novel process development and scale-up programs. You will combine chemical engineering fundamentals (reaction kinetics, thermodynamics, transport) with applied modeling skillsets to help solve challenging problems and progress new technologies from early-stage ideation to commercial-scale deployment.

What you will do

• Develop and apply fit-for-purpose first principles/phenomenological models of novel, first of a kind process units to guide screening, development, and design of new process technologies across the business portfolio (Upstream, Product Solutions, Low Carbon Solutions)
• Apply strong background in fundamentals-based modeling, particularly in the areas of reaction kinetics, heat and mass transfer in unit operations, and design for advanced reactors or separations
• Work collaboratively in cross-discipline teams deploying models to guide/support experimentation (active materials development, lab and pilot-scale studies), process engineering, and equipment design
• Formulate modeling framework from high-level research program objectives and guide a team of 1 to 3 modelers to deliver modeling goals
• Apply deep knowledge and mentorship in topics related to first principles/phenomenological modeling, and reactor engineering within Research and broader ExxonMobil communities
• Champion sustainment of differentiated modeling capabilities to deliver business value

About You

Job Requirements:

• PhD in Chemical Engineering, Mechanical Engineering, Applied Mathematics or related discipline with relevant thesis work
• 10+ years of demonstrated industrial experience with:
  • Developing and applying customized multi-scale models of process units (i.e. reacting and separation systems, electrochemical processes, membrane/adsorption separations, steady state/dynamic/cyclic etc.)
  • Building, solving, and optimizing robust kinetic models
  • Computational languages: gPROMS, MATLAB, Python, Aspen Custom Modeler or similar
• Strong ability and interest to work on applications driven by abstract problems and develop creative out-of-the box solutions
• Effective interpersonal skills and leadership behaviors
• Strong written and oral communication skills
• Driven and self-motivated

Preferred Knowledge or Skills:

• Process scale-up experience understanding the impact of scale on unit operations/commercial-scale embodiment/design
• Experience with process simulation platforms (APSEN, HYSYS, Pro-II), hybrid modeling (i.e.: PINNs, AI/ML), Techno-economic Analysis
• Lab and/or pilot scale experimentation

Your benefits

An ExxonMobil career is one designed to last. Our commitment to you runs deep: our employees grow personally and professionally, with benefits built on our core categories of health, security, finance, and life.

We offer you:

• Pension Plan: Enrollment is automatic and at no cost to you. The basic benefit is a monthly annuity to be paid to you in retirement for the rest of your life.
• Savings Plan: You can contribute between 6% and 20% of your pay and are encouraged to enroll right away. If you contribute at least 6% to your savings plan, the Company will contribute a 7% match.
• Workplace Flexibility: We have several programs such as “Flex your Day”, providing ad-hoc flexibility around when and where you work, as well as longer-term programs such as leaves of absence and part-time work.
• Comprehensive medical, dental, and vision plans.
• Culture of Health: Programs and resources to support your wellbeing.
• Employee Health Advisory Program: Provides confidential professional counseling for you and your family, including tools and resources promoting mental health and resiliency at no additional cost to you.
• Disability Plan: Income replacement for when you cannot work due to illness or injury occurring on or off the job. Enrollment is automatic and at no cost to you.

More information on our Company’s benefits can be found at

Please note benefits may be changed from time to time without notice, subject to applicable law.

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EEO Statement

ExxonMobil is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, age, sexual orientation, gender identity, national origin, citizenship status, protected veteran status, genetic information, or physical or mental disability.

Nothing herein is intended to override the corporate separateness of local entities. Working relationships discussed herein do not necessarily represent a reporting connection, but may reflect a functional guidance, stewardship, or service relationship.

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