Senior Instrument Engineer - Baytown, TX

Exxon Mobil
Baytown, TX
About us

At ExxonMobil, our vision is to lead in energy innovations that advance modern living and a net-zero future. As one of the world's largest publicly traded energy and chemical companies, we are powered by a unique and diverse workforce fueled by the pride in what we do and what we stand for.

The success of our Upstream, Product Solutions and Low Carbon Solutions businesses is the result of the talent, curiosity and drive of our people. They bring solutions every day to optimize our strategy in energy, chemicals, lubricants and lower-emissions technologies.

We invite you to bring your ideas to ExxonMobil to help create sustainable solutions that improve quality of life and meet society's evolving needs. Learn more about our What and our Why and how we can work together .

About Baytown

With a population of more than 77,000, Baytown, Texas, is located in the Gulf Coast region of the United States, just east of Houston, the nation's fourth largest city. Those who live and work in Baytown will find an area rich in history, as well as opportunities for outdoor activities due to its proximity to scenic waterways, namely Galveston Bay, the San Jacinto River and Buffalo Bayou.

Founded in 1919, ExxonMobil's Baytown Complex is located on approximately 3,400 acres along the Houston Ship Channel, about 25 miles east of Houston. Employing a workforce of more than 8,500, it is comprised of four manufacturing sites, including one in nearby Mont Belvieu, and a global technology center. These include the Baytown Refinery, one of the largest refineries in the United States, and the Baytown Olefins Plant, one of the largest ethylene plants in the world.

Its scope of products includes fuels, lube oils, and chemical compounds used in a diverse range of products, from auto battery cases, diapers and tire inner tubes to pharmaceutical uses, food packaging, trash bags and more.

The Baytown area sites are highly integrated, which makes the plants and products more efficient as we develop technologies to make cleaner fuels and work together to operate more safely and reliably.

Learn more about what we do in Baytown here .

What role you will play in our team

Provide instrument engineering expertise at the ExxonMobil Baytown,Tx.

What you will do

The work includes engineering design, configuration, programming, maintenance, trouble-shooting, failure analysis, performance analysis in support of safe and reliable operations of instrumentation equipment within the Complex, including:

  • Field instrumentation for process measurement (e.g. Pressure, Temperature, Level, and Flow) as well as specialty measurements (density, vibration) and control valves, shutdown valves, and their transmission systems (e.g. 4-20mA, HART, ProfiBus)
  • Safety Instrumented Systems (SIS)
  • Machinery controls and protection systems
  • Programmable Logic Controllers (PLC's) for monitoring and control of packaged systems
  • Instrumentation cabling, wiring, junction box, power supply and distribution, UPS, and associated TCP/IP, SCADA, Modbus networking (switches, routers, Ethernet, fiber optics, etc.) and transmission systems.
Responsibilities include, but are not limited to:

  • Sizing and specifying various types of instrumentation for new or existing instruments undergoing a change
  • Supporting the maintenance team and interfacing with vendors and contractors to maintain, troubleshoot, repair/replace, configure/tune/program, test/commission/de-commission, etc.
  • Supporting development of equipment strategies, understanding the impact of equipment sparing, redundancy, reliability, availability, maintainability, and maintenance cost in support of operations excellence and capital efficiency
  • Participating in activities related to safety, risk assessment and safety incident investigations related to instrumentation equipment.
Primary contributions will be at the individual contributor level with close interfaces within the immediate work group and interfaces with other disciplines within engineering and maintenance.

About You

Skills and Qualifications

  • Bachelor's degree or above in Electrical / Electronic Engineering or equivalent
  • Understand the principles of Fundamental Process Measurements (e.g., Pressure, Temperature, Level, and Flow)
  • Able to size and specify various types of instrumentation (e.g., flow meters, control valves, shutdown valves) under the guidance of experienced resources
  • Understand Instrumentation Society of America (ISA) and American Petroleum Association (API) Symbols and Process and Instrumentation Diagram and how to read a P&ID
  • Understand basics of piping for instruments, tubing and Fittings, signal transmission media, communication hardware and software, and basic process and safety requirements for field devices
  • 3+years working experience related to petrochemical industry or design institute
  • Demonstrated understanding of overall Instrumentation and Control (I&C) requirements and design principles and knowledge of field measurement and control devices and their proper application
  • Knowledge of troubleshooting techniques, performance analysis and the ability to solve field problems and familiarity with measurement and control devices from major vendors in the Industry
  • Sound knowledge and experience in equipment engineering specifications and standards, including Industry standards.
  • Knowledge of safety system hardware, software architecture, and transmission systems and familiarity with SIS software and hardware platforms from major vendors (Schneider-Electric, Honeywell, HIMA, etc.) and the capabilities to maintain and support the site implementation
  • Knowledge of safety in design principles, ability to contribute to HAZOPs and Risk Assessments, SIL assignment and evaluation processes and knowledge and proper use of Hazardous Area codes to be able to classify areas and specify appropriate equipment
  • Familiarity with DCS software and hardware platforms from major vendors (Honeywell, Yokogawa, Emerson, etc.) or equivalent
  • Skilled in equipment strategy development including risk assessment facilitation and evaluation of task cost effectiveness, communicating equipment strategy results and obtaining approval of completed equipment strategies
Preferred Qualifications/ Experience

  • Familiarity with Smart PlantInstrumentation (SPI) software or equivalent
  • Skills necessary to design, implement, troubleshoot and maintain data connections from DCS/SCADA systems to business, instrument, analyzer and other subsystem/peer system networks
  • Knowledge of Package Systems function, interface methods and specification development and skills necessary to configure host networking parameters and network devices for system interconnection and ability to troubleshoot networked systems
  • Knowledge of Industrial Control Systems Environment (ICSE) security design, implementation and on-going management
  • Skilled in understanding and interfacing with all types of control and monitoring systems associated with machinery and with fired equipment.
Your benefits

An ExxonMobil career is one designed to last. Our commitment to you runs deep: our employees grow personally and professionally, with benefits built on our core categories of health, security, finance, and life.

We offer you:

  • Pension Plan: Enrollment is automatic and at no cost to you. The basic benefit is a monthly annuity to be paid to you in retirement for the rest of your life.
  • Savings Plan: You can contribute between 6% and 20% of your pay and are encouraged to enroll right away. If you contribute at least 6% to your savings plan, the Company will contribute a 7% match.
  • Workplace Flexibility: We have several programs such as "Flex your Day", providing ad-hoc flexibility around when and where you work, as well as longer-term programs such as leaves of absence and part-time work.
  • Comprehensive medical, dental, and vision plans.
  • Culture of Health: Programs and resources to support your wellbeing.
  • Employee Health Advisory Program: Provides confidential professional counseling for you and your family, including tools and resources promoting mental health and resiliency at no additional cost to you.
  • Disability Plan: Income replacement for when you cannot work due to illness or injury occurring on or off the job. Enrollment is automatic and at no cost to you.
More information on our Company's benefits can be found at

Please note benefits may be changed from time to time without notice, subject to applicable law.

Stay connected with us

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Equal Opportunity Employer

ExxonMobil is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, age, sexual orientation, gender identity, national origin, citizenship status, protected veteran status, genetic information, or physical or mental disability.

Nothing herein is intended to override the corporate separateness of local entities. Working relationships discussed herein do not necessarily represent a reporting connection, but may reflect a functional guidance, stewardship, or service relationship.

Exxon Mobil Corporation has numerous affiliates, many with names that include ExxonMobil, Exxon, Esso and Mobil. For convenience and simplicity, those terms and terms like corporation, company, our, we and its are sometimes used as abbreviated references to specific affiliates or affiliate groups. Abbreviated references describing global or regional operational organizations and global or regional business lines are also sometimes used for convenience and simplicity. Similarly, ExxonMobil has business relationships with thousands of customers, suppliers, governments, and others. For convenience and simplicity, words like venture, joint venture, partnership, co-venturer, and partner are used to indicate business relationships involving common activities and interests, and those words may not indicate precise legal relationships.

Job ID:- 81282

Nearest Major Market: Houston
Job Segment: Sustainability, Testing, Instrumentation, Engineer, Manufacturing Engineer, Energy, Technology, Engineering
Posted 2026-03-07

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