Engineer III

#WeAreONEOK – Fortune 500 company. 100+ years in business. Leading midstream service provider. Safety first. Sustainable operations. Environmentally responsible. Employee focused.

Join ONEOK and play a key role in delivering the energy infrastructure that powers an advancing world. As an Engineer III based in Mont Belvieu, TX, you will lead complex engineering and project management initiatives that support critical natural gas, NGL, storage, processing, and pipeline assets. This position offers the opportunity to influence projects from concept through completion while working alongside industry experts to optimize system performance, improve reliability, and drive operational excellence. Success in this role requires strong technical expertise coupled with exceptional project management capabilities. The Engineer III will be responsible for managing multiple capital and operational projects simultaneously, including scope development, budgeting, AFE preparation, contractor coordination, bid evaluations, schedule management, change management, and construction execution. You will serve as a key decision-maker, balancing customer needs, stakeholder expectations, and business objectives while ensuring projects are completed safely, efficiently, and on schedule. The ideal candidate brings experience in pipeline, processing, storage, or midstream facility engineering and has a demonstrated track record of leading engineering projects from design through startup. You'll leverage your analytical skills to evaluate system performance, conduct economic and engineering studies, identify improvement opportunities, and develop innovative solutions that enhance capacity, reliability, and operational efficiency. At ONEOK, our core values guide everything we do. We are committed to maintaining a zero-incident culture, operating with integrity, embracing diverse perspectives, delivering excellence through continuous improvement, fostering innovation, and serving our employees, customers, and communities. If you are a collaborative engineering professional who thrives on solving complex challenges, leading cross-functional projects, and creating lasting value, we invite you to join our team and help shape the future of energy. Job Profile Summary Directs and performs an advanced level of engineering and/or project management duties related to one or more functional areas that may include: pipeline system planning and analysis, gathering system operation; gas and liquids measurement, gas analysis, and measurement station design; processing and/or storage facility operation; and/or estimating, designing, and coordinating construction projects. Essential Functions and Responsibilities Direct and/or perform engineering and/or project management activities related to design, procurement, construction, or optimization of company assets including but not limited to: Transmission and/or gathering systems, measurement and regulation facilities, compressor and pump stations and dehydration plants NGL fractionation, natural gas processing and/or hydrocarbon storage facilities Construction plans and implementation Management of third-party contract resources Provide technical and/or engineering assistance on matters including but not limited to: Equipment/system design Pipeline sizing and evaluation­ Pipeline control Pipeline facility design, construction, operation, and maintenance Policies and procedures Process Safety Perform and review project management activities including but not limited to: Bid proposals and contracts AFE preparation and cost management Management of Change (MOC)­ Material/equipment specifications and selection Construction plans and support Creating and updating schedules / timelines Preparing project progress and other reports Managing change orders Identify equipment efficiencies, complete hydraulic calculations, determine valve and pipeline sizing and perform gas flow analysis. Research, analyze, prepare