2026USH - Core Modeling Engineer

ExxonMobil • Spring, TX

4d

About The Position

The Core Modeling Engineer will join a centralized team that develops, supports, and improves Production Planning & Optimization LP models for manufacturing sites worldwide. We are looking for experienced individuals who will play key role in:

Responsible for developing, maintaining, and enhancing LP models to ensure they remain accurate, current, and fit‑for‑purpose for Economists.
Partner with Manufacturing Site Engagement Leads to identify, investigate and analyze modeling opportunities that improve molecule management and profitability.
Responsible for implementing LP model changes, including scoping, developing modeling solutions, evaluating expected economic impacts, and supporting the model Management of Change process.
Train, coach and mentor Early-career Core Modeling Engineers in modeling, tools, techniques, and troubleshooting.
Collaborate with cross‑functional teams - including Economists, Model Validation, Derived Modeling, and Process Engineering - to deliver profitability‑focused model enhancements.
Collaborate and contribute to companywide modeling & optimization network.

Requirements

• Bachelor's Degree / MSc. / MEng in Chemical Engineering.
• More than 5 years of Refinery/Petrochemical manufacturing experience, including some optimization experience (e.g. modeling, scheduling, economist)
• Experience in optimization tools (e.g., LP models) and manufacturing economics.
• Strong communication and interpersonal skills
• Ability to collaborate effectively with internal and external teams
• Ability to work in a multi-cultural global team
• Inquiry based mindset to understand and extract key messages to drive opportunities and path forward

Responsibilities

• Developing, maintaining, and enhancing LP models to ensure they remain accurate, current, and fit‑for‑purpose for Economists.
• Partnering with Manufacturing Site Engagement Leads to identify, investigate and analyze modeling opportunities that improve molecule management and profitability.
• Implementing LP model changes, including scoping, developing modeling solutions, evaluating expected economic impacts, and supporting the model Management of Change process.
• Training, coaching and mentoring Early-career Core Modeling Engineers in modeling, tools, techniques, and troubleshooting.
• Collaborating with cross‑functional teams - including Economists, Model Validation, Derived Modeling, and Process Engineering - to deliver profitability‑focused model enhancements.
• Collaborating and contributing to companywide modeling & optimization network.

Benefits

• 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.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level