**\#WeAreONEOK** **–** **Fortune 500 company. 100+ years in business. Leading midstream service provider. Safety first. Sustainable operations. Environmentally responsible. Employee focused.** **JOB SUMMARY** Join ONEOK as a **Senior Storage Reservoir Engineer** based in **Tulsa, Oklahoma** , where you'll play a key role in optimizing the performance of our underground natural gas storage assets. We're looking for a technically skilled reservoir engineer with a passion for innovation and data-driven solutions. In this role, you'll develop advanced simulations, integrate real-time data, and develop KPI dashboards to drive operational excellence. Proficiency in modeling tools such as **Intersect, Eclipse, Kappa** , or similar platforms is essential. Enjoy the flexibility of a **hybrid work schedule** , with in-office collaboration at the Tulsa Plaza on **Monday, Tuesday, and Thursday** , and the option to work remotely on **Wednesday and Friday** . This is your opportunity to make a meaningful impact in a dynamic and supportive environment. **Job Summary** The Senior Storage Reservoir Engineer will lead advanced reservoir characterization and optimization efforts across both salt cavern and depleted field natural gas storage assets. This role is instrumental in improving operational performance, enabling data-driven strategy, and supporting the evaluation and implementation of fit-for-purpose reservoir modeling software. **Key Responsibilities** + Characterize storage performance under operational scenarios including high-turn salt and seasonal depletion. + Identify and quantify optimization opportunities for deliverability, capacity, and conformance. + Develop KPI dashboards and tracking systems to monitor and improve reservoir performance. + Generate and/or validate injection and withdrawal performance curves. + Lead inventory audit and verification process internally and provide recommendations to senior leadership. + Present technical recommendations and optimization strategies to senior leadership. + Provide technical and reservoir support in evaluation of expansion opportunities (both greenfield and brownfield) + Integrate models with real-time operational data (e.g., OSIsoft PI, SCADA) for cycle and rate optimization. + Support evaluation and selection of static/dynamic modeling platforms aligned with business needs. + Generate dynamic reservoir modeling and simulation using INTERSECT, Eclipse, Kappa, or similar tools. + Mentor junior team members and support technical standards development. **Required Qualifications** + 7+ years of experience in underground gas storage (salt cavern/depleted field) or relatable industry. + Proficiency in dynamic reservoir simulation tools (INTERSECT, Eclipse, Kappa, etc). + Proven track record of optimizing storage KPIs through reservoir modeling. + Experience with real-time data integration and operational support. + Strong reporting and presentation skills. **Preferred Qualifications** + Experience with multi-site storage portfolios. + Exposure to regulatory modeling or compliance reporting. + Familiarity with digital twin or machine learning-based modeling. **Performance Expectations** + Demonstrated asset optimization gains of ≥10% in key KPIs. + Supported selection and implementation of improved modeling software. + Developed KPI frameworks used across assets for tracking and reporting. **Licenses and Certifications** + Bachelor’s or Master’s in Petroleum Engineering, Reservoir Engineering, or related field required. **Strength Factor Rating - Physical Demands/Requirements** + Sedentary Work - Exerting up to 10 pounds of force occasionally (Occasionally: activity or condition exists up to 1/3 of the time) and/or a negligible amount of force frequently (Frequently: activity or condition exists from 1/3 to 2/3 of the time) to lift, carry, push, pull, or otherwise move objects, including the human body. Sedentary work involves sitting most of the time but may involve walking or standing for brief periods of time. Jobs are sedentary if walking and standing are required only occasionally, and all other sedentary criteria are met **.** **Strength Factor Description - Physical Demands/Requirements** + Standing: Remaining on one's feet in an upright position at a workstation without moving about (Occasionally) + Walking: Moving about on foot (Frequently) + Sitting: Remaining in a seated position (Constantly) + Lifting: Raising or lowering an object from one level to another (includes upward pulling) (Occasionally) + Carrying: Transporting an object, usually holding it in the hands or arms, or on the shoulder (Occasionally) + Pushing: Exerting force upon an object so that the object moves away from the force (Occasionally) + Pulling: Exerting force upon an object so that the object moves toward the force (includes jerking) (Occasionally) + Climbing: Ladders, Stairs (Occasionally) + Balancing: Maintaining body equilibrium to prevent falling (Occasionally) + Stooping: Bending the body downward and forward by bending the spine at the waist (Occasionally) + Kneeling: Bending the legs at the knees to come to rest on the knee or knees (Occasionally) + Crouching: Bending the body downward and forward by bending the legs and spine (Occasionally) + Crawling: Moving about on the hands and arms in any direction (Occasionally) + Reaching: Extending hands and arms in any direction (Constantly) + Handling: Seizing, holding, grasping, turning or otherwise working with the hand or hands (Manual Dexterity) (Constantly) + Fingering: Picking, pinching or otherwise working with the fingers primarily (Finger Dexterity) (Constantly) + Feeling: Perceiving such attributes of objects/materials as size, shape, temperature, texture, movement or pulsation by receptors in the skin, particularly those of the fingertips (Constantly) + Talking: Expressing or exchanging ideas/information by means of the spoken word (Frequently) + Hearing: Perceiving the nature of sound by the ear (Frequently) + Tasting/Smelling: (Occasionally) + Near Vision: Clarity of vision at 20 inches or less (Constantly) + Far Vision: Clarity of vision at 20 feet for more (Frequently) + Depth Perception: Three-dimensional vision; ability to judge distances and spatial relationships so as to see objects where and as they actually are (Frequently) + Vision: Color - The ability to identify and distinguish colors (Constantly) **Working Conditions/Environment** + Employee is subject to inside environmental conditions **Working Conditions** + Well lighted, climate-controlled areas (Constantly) + Frequent repetitive motion (Constantly) + CRT (Computer Monitor(s)) (Constantly) **Travel** + Travel to other locations and job sites out-of-doors required **Driving** + Based on assigned tasks, employees may be assigned a company vehicle requiring the applicable driver's license _ONEOK is an equal opportunity employer committed to diversity and inclusion. All qualified applicants will receive consideration for employment without regard to race, color, sex, pregnancy, sexual orientation, age, religion, creed, national origin, gender identity, disability, military/veteran status, genetic information or any other categories protected by applicable law._ _The job description is not intended to be a complete list of all responsibilities, duties or skills required for the job and is subject to review and change at any time, with or without notice, in accordance with the needs of ONEOK._ _ONEOK is committed to making our workplace accessible to individuals with disabilities and will provide reasonable accommodations, upon request, for individuals to participate in the application and hiring process. To request an accommodation email HRSolutions@ONEOK.com or call 1-855-663-6547​._ \#LI-HYBRID **Expected Salary Range** $173,000.00 - $259,000.00 At ONEOK (NYSE: OKE), we deliver energy products and services vital to an advancing world. We are a leading midstream operator that provides gathering, processing, fractionation, transportation, storage and marine export services. Through our approximately 60,000-mile pipeline network, we transport the natural gas, natural gas liquids (NGLs), refined products and crude oil that help meet domestic and international energy demand, contribute to energy security and provide safe, reliable and responsible energy solutions needed today and into the future. As one of the largest integrated energy infrastructure companies in North America, ONEOK is delivering energy that makes a difference in the lives of people in the U.S. and around the world.