•Developed investment basis memorandum for a $2 BUSD lubricants project, which consisted of specifying engineering design basis and total utilities equipment required such as steam, power, and utilities systems.•Designed and estimated the cost for different power and steam cogeneration units, ranging from 98 MW to 200 MW which allowed the company executives to understand the different investing strategies available.•Designed and developed investment basis memorandum for a $50 MUSD demineralized water project, which consisted of selecting the proper technology and assessing the right utilities and capital investment.•Eliminated capital expenditure of $100 MUSD by developing crude logistics import model, which predicted the total asset utilization for a 5 year window in the Chinese market.•Researched and developed a bleach injection guideline to reduce legionella risk, standardize the usage, design, and operation of sodium hypochlorite in different ExxonMobil sites throughout the globe.•Participated and contribute in scenario-based risk assessments, project risk assessments, internal audits, operations integrity assessments and other reviews for power generation units.