Sr Engineer I, Process Development

Phillips 66 & YOU - Together we can fuel the future

As a Sr Engineer I, Process Development, you will research, design, and optimize process solutions that unlock value from major refining capital projects at Phillips 66. You will take concepts from early idea through design basis and economics into start-up, partnering closely with operations, project management, and external engineering partners. This role gives you the opportunity to shape technical standards and process design strategies while helping deliver safe, reliable, and profitable growth across our refining portfolio.

What You’ll Do

• Design and validate process engineering solutions and standards for refining capital projects, ensuring they meet performance, safety, and regulatory expectations.
• Develop FEL-0/1 and subsequent process design bases, including heat and material balances, process simulations, and equipment specifications, to enable screening economics, schedules, and scope decisions.
• Build project economics by defining Linear Program (LP) case assumptions, reviewing LP model outputs, and performing cashflow analysis to recommend value-maximizing options and support investment decisions.
• Define scopes of work for engineering contractors, review process deliverables such as PFDs, P&IDs, hydraulics, and simulation results, and provide technical oversight as designs are optimized through the project lifecycle.
• Manage complex technical troubleshooting and process engineering studies, using data analysis and modeling to diagnose issues, evaluate alternatives, and implement robust, long-term solutions.
• Draft and maintain key engineering documentation, including process standards, engineering drawings, project objective letters, and process safety information, to clearly communicate design intent and ensure compliance.
• Partner with refinery operations, technical specialists, and project teams to develop Management of Change (MOC) evaluations, prepare-to-operate and commissioning plans, and support safe startup and early operation of new or modified units.
• Recommend and apply new technologies, tools, and data-driven methods to improve process performance, reliability, and energy efficiency across the refining system.
• Provide mentoring and technical guidance to less experienced engineers, sharing best practices in process design, troubleshooting, and project execution.

What You’ll Bring – Required

• Legally authorized to work in the job posting country
• Bachelor’s degree in an engineering discipline
• 4 or more years of experience in the refining or petrochemical industries, including experience in a process engineering, project development or economic analysis role
• Willing and able to obtain a Transportation Worker Identification Card (TWIC)
• Ability to travel up to 30% of the time annually. Engineers will be expected to support projects at multiple refinery and EPC contractor locations.

What Makes You Stand Out – Preferred

• Bachelor’s degree in Chemical, Process, or Mechanical Engineering
• 10 or more years of experience in the refining or petrochemical industries, including experience in process engineering, project development and economic analysis roles
• 5 or more years of experience working as a Process Engineer in a refinery
• Experience developing FEL-0/1 and FEL process design packages for refining capital projects
• Experience with Linear Program (LP) modeling, cashflow analysis, and investment appraisal for refining projects
• Technical experience across multiple refining technologies such as FCC, hydrocracking, alkylation, reforming, and distillation
• Experience with an operating company managing engineering, procurement, and construction (EPC) contractors, or prior EPC contractor experience
• 3 or more years of experience with process simulation software such as HYSYS, Pro II, or Aspen Plus
• Demonstrated ability to lead troubleshooting, root cause analysis, and continuous improvement initiatives in operating facilities
• Ability to build strong, collaborative relationships with refinery operations, technical specialists, and project teams

Compensation Range 

This position has a base salary range of $141,300 - $172,700.

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 requisition closing date of 07/08/2026.

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.