Engineer I, Instrument, Wood River Refinery

Phillips 66 & You - Together we can fuel the future

As an Instrument Engineer , you will help keep our refining units running safely, reliably, and efficiently through high‑quality instrumentation and control solutions. You will contribute to the design, operation, and improvement of instrumented systems that monitor and control critical refinery processes. Working closely with operations, maintenance, and project teams, you will apply your technical skills to solve problems, support turnarounds, and deliver instrumentation projects that make a real impact at Phillips 66.

What You'll Do

• Provide technical support on instrumentation systems for assigned refinery units, helping ensure safe, reliable, and compliant operations.
• Contribute to the design, review, and field verification of instrument design packages, including specifications, drawings, and documentation for new and modified systems.
• Support turnaround and maintenance activities by developing engineering scopes, coordinating installation and commissioning, and troubleshooting issues during startup.
• Identify, analyze, and help resolve instrumentation and analyzer problems, using data and root cause methods to recommend and implement improvements.
• Help plan and execute small maintenance and infrastructure projects for instrumentation assets, working within established project plans, budgets, and schedules.
• Maintain and improve instrumentation documentation, criticality rankings, and spare parts strategies to support equipment reliability and availability.
• Participate in process hazard analyses, management of change activities, and safety instrumented system reviews to maintain safe operation and manage risk.
• Collaborate with peers and cross‑functional teams to share learnings, align on standards, and contribute to company instrumentation networks and best practices.
• Stay current on emerging instrumentation technologies and apply relevant advances to refinery systems where appropriate.

What You'll Bring - Required

• Legally authorized to work in the job posting country
• Bachelor's degree in an engineering discipline
• 1 or more years of relevant engineering experience in the Energy, Petrochemicals, Manufacturing or similar industry
• Willing and able to obtain a Transportation Worker Identification Credential (TWIC)
• Valid driver's license
• Intermediate working proficiency with IEC, ISA, and API codes and standards
• Must be willing and able, with or without reasonable accommodation, to comply with the following:
  • Travel as needed up to 5%
  • Operate company vehicle on site premises and/or public roads up to 20%
  • Work extended hours, which may include evenings, weekends, and holidays, and perform occasional on-call duties
  • Transport articles up to 50 pounds
  • Climb ladders and stairs up to 200 feet
  • Work safely near large, hot, high-speed machines, around chemicals and hydrocarbons under high pressure and heat, and in harsh weather conditions
  • Wear fire retardant clothing and personal protective equipment
  • Maintain face daily for proper respirator/face mask seal (some examples include being free of facial hair and/or clean shaven)

What Makes You Stand Out - Preferred

• 3 or more years of instrumentation engineering experience
• Experience working in refining or chemicals facilities with complex process units.
• Working knowledge of API, IEEE, NEMA, UL, and ANSI standards
• Working knowledge of SPI (SmartPlant Instrumentation) or similar instrumentation design tools
• Experience with lifecycle management and improvement for safety instrumented systems
• Experience supporting instrument reliability programs and using root cause analysis or failure mode and effects analysis (FMEA) to improve asset performance
• Advanced proficiency in Microsoft Office Suite and relevant engineering software for data analysis and design
• Experience leading or contributing to instrumentation-focused projects and knowledge-sharing networks

Compensation Range


This position has a base salary range of $114,300 - $139,700.

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.

The Wood River Refinery is located in Roxana, Illinois, about 15 miles northeast of St. Louis, Missouri, at the confluence of the Mississippi and Missouri rivers. Refinery facilities include crude distilling, naphtha reforming, fluid catalytic cracking, alkylation, hydrocracking, hydrodesulfurization and delayed coking units. The refinery processes a mixture of light, low-sulfur; heavy, high sulfur; and high-acid crude oil. The crude supply is sourced domestically or from Canada. Wood River produces a high percentage of transportation fuels. Other products include petrochemical feedstocks, asphalt and petroleum coke. Refined products are distributed to customers by pipeline, rail car, barge and truck and are shipped to markets throughout the Midcontinent region.

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 b e 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 10/12/2026 .

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: St Louis