Senior Engineer II, Research

Phillips 66 & YOU - Together we can fuel the future

As a Senior Engineer, Process Integrity in our Energy Research & Innovation organization, you will investigate complex technical problems and turn advanced characterization, troubleshooting, and modeling work into practical solutions that support the reliability and performance of Phillips 66's refining, midstream, and renewable fuel assets. You'll work across disciplines to lead challenging troubleshooting projects, develop improved methods, advise business partners, and build technical capability in a collaborative environment where your expertise can make a measurable impact.

What You'll Do

• Identify opportunities to apply laboratory and field testing to real operating problems; design and execute experiments and tests using appropriate methods and analytical techniques; and translate results into practical, unit-level recommendations that resolve issues and support Phillips 66 operations.
• Develop and deliver plans for significant technical support and troubleshooting efforts, managing a portfolio of projects while balancing priorities, resources, schedules, and technical risk across multiple sites and customers.
• Analyze data from laboratory, field, process, and other sources to identify trends and root causes, evaluate operational and business impacts, and translate findings into actionable recommendations that support site decisions.
• Apply advanced diagnostic methods, analytical characterization techniques, modeling, simulation, scientific software, and company-approved AI tools to investigate complex technical problems and evaluate outcomes.
• Improve troubleshooting processes, procedures, test methodologies, and tools; develop new techniques and diagnostic capabilities; and create reusable standards that strengthen the quality, consistency, and efficiency of technical support across the organization.
• Provide expert technical advice on findings, standards, procedures, and emerging integrity issues, helping sites and stakeholders take informed action across refining, midstream, and renewable businesses.
• Serve as a subject matter expert in areas such as corrosion, fouling mitigation, crude quality, renewable feed quality, or product quality; mentor colleagues and provide guidance to less experienced scientists and engineers.
• Build business cases that justify proactive investigations and investments to improve reliability and operations.
• Contribute to technical reports, publications, and knowledge-sharing materials, and communicate findings clearly to technical and nontechnical audiences.
• Monitor external developments, regulations, and industry best practices; represent Phillips 66 in technical forums and bring relevant insights back to the organization.
• Provide safety leadership, support sound laboratory and operating practices, and adapt plans as new information, priorities, or technical challenges emerge.

What You'll Bring - Required

• Legally authorized to work in the job posting country.
• Bachelor's degree or equivalent in Chemistry, Chemical Engineering, Mechanical Engineering, Materials Science, Corrosion Engineering, or a related scientific or engineering field.
• 6 or more years of experience in applied technical work, troubleshooting, or technical problem solving in a refining, midstream, petrochemical, laboratory, or related technical setting.
• 3 or more years of hands-on experience in refinery or petrochemical process chemistry, materials, corrosion, fouling, or failure analysis.

What Makes You Stand Out - Preferred

• PhD or Master's degree in Chemistry, Chemical Engineering, Mechanical Engineering, Materials Science, Corrosion Engineering, or a related scientific or engineering field.
• 10 or more years of experience in applied technical work, troubleshooting, or technical problem solving in a refining, midstream, petrochemical, laboratory, or related technical setting.
• 8 or more years of hands-on experience in refinery or petrochemical process chemistry, feedstock quality, materials, corrosion, fouling, or failure analysis in an industry, research, or laboratory setting.
• Experience in corrosion troubleshooting and support, including desalting and overhead corrosion, amine or sulfur treating corrosion, naphthenic acid corrosion, sulfidation corrosion, free-fatty-acid corrosion, or other refinery corrosion mechanisms.
• Strong working knowledge of corrosion mechanisms, materials degradation, welding and metallurgy, chemical treatment, coatings, fouling mitigation, or corrosion modeling.
• Experience conducting or supporting failure analysis, root-cause investigations, risk assessments, or laboratory corrosion studies.
• Experience with corrosion modeling or simulation tools such as COMSOL, Aspen HYSYS, OLI, or similar applications.
• Proficiency selecting, interpreting, and drawing conclusions from analytical techniques including XRF, XRD, CHN, IC, ICP, GCxGC-MS, GC-MS, SIMDIS, SEM, TGA, and optical microscopy.
• Experience supporting refinery unit operations or midstream systems, including crude and overhead, desalter, FCC, hydroprocessing, sulfur and amine, coker, gas plant, fractionation, TEG, dehydration, or pipelines.
• Strong understanding of the chemical and physical properties of crude oils, refined products, renewable feedstocks, and related intermediate streams.
• Experience using AI tools to support research, analysis, or technical problem-solving.
• Experience mentoring colleagues, critically reviewing work, guiding method development through influence, or representing an organization in external technical forums and industry consortia.
• Experience providing general supervision of more junior colleagues.
• Experience applying research methods, experimental design, data collection and analysis, and research and development testing.
• Experience using research databases, scientific software, laboratory equipment interfacing tools, or related technologies.
• Experience performing advanced data analysis, modeling, or simulation for scientific or technical problem-solving.

Compensation Range


This position has a base salary range of $ 160,200 - $195,800.

At Phillips 66, we are committed to pay transparency and competitive, equitable compensation. Each role is assigned a salary grade with a defined pay range, benchmarked against industry peers. Where a candidate offer falls within the posted range depends on the candidate's experience, skills, and alignment with the role's requirements. Offers are made to ensure internal equity and market competitiveness. Our compensation programs are designed to reward performance and support career growth.

Total Rewards


At Phillips 66, providing access to high quality programs and care for you and your family is important to us. Maintaining a culture of well-being - physical, emotional, social, and financial - is essential for a high-performing organization. When we are at our best, we are poised to deliver exceptional results - personally and professionally. Benefits for certain eligible, full-time employees include:

• Annual Variable Cash Incentive Program (VCIP) bonus
• 8% 401k company match
• Cash Balance Account pension
• Medical, Dental, and Vision benefits with an annual company contribution to a Health Savings Account for employees on HDHP
• Total well-being programs and incentives, including Employee Assistance Plan, well-being reimbursement, and backup family care services

Learn more about Phillips 66 Total Rewards .

Phillips 66 has more than 140 years of experience in providing the energy that enables people to dream bigger and go farther, faster. We are committed to improving lives, and that is our promise to our employees and our communities. We are sustained by the backgrounds and experiences of our diverse teams, which reflect who we are, the environment we create and how we work together. We have been recognized by the Human Rights Campaign, U.S. Department of Labor and the Military Times for our continued commitment to inclusive practices and policies in the hiring and retention of those in the LGBTQ+ community and military veterans. Our company is built on values of safety, honor and commitment. We call our cultural mindset Our Energy in Action, which we define through four simple, intuitive behaviors: We work for the greater good, cultivate an environment of trust, seek different perspectives and pursue excellence.


Learn more about Phillips 66 and how we are working to meet the world's energy needs today and tomorrow, by visiting phillips66.com.

To be considered


In order to be considered for this position you must complete the entire application process, which includes answering all prescreening questions and providing your eSignature on or before the requisitio n closing date of 10/27/2026.

Candidates for regular U.S. positions must be a U.S. citizen or national, or an alien admitted as permanent resident, refugee, asylee or temporary resident under 8 U.S.C. 1160(a) or 1255(a)(1). Individuals with temporary visas such as E, F-1, H-1, H-2, L, B, J, or TN or who need sponsorship for work authorization now or in the future, are not eligible for hire.

Phillips 66 is an Equal Opportunity Employer

Nearest Major Market: Tulsa
Nearest Secondary Market: Oklahoma