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Senior Water Treatment Engineer


Job Location:

Spring, TX - USA

Hourly Salary: USD 105 - 117
Posted: 29 September 2026 (2 days ago)
Application Deadline: 27 December 2026
Vacancies: 1 Vacancy

Job Summary

12-Month Contract
On-site at Spring Campus


ExxonMobil has been a leader in the energy sector for over 140 years. As ExxonMobil adapts to meet the increasing global demand for oil natural gas and refined products it is committed to playing a pivotal role in energy transition. ExxonMobils mission to fuel the world safely and responsibly has never been more important.

Together Raise and ExxonMobil are building teams that are rising to meet the worlds growing energy needs through the ExxonMobil Contingent Communitywhere skilled workers and unique contract opportunities meet.

Raise is taking applications for current openings like this one while building a diverse group of talent for future openings. When you apply for this role youll also be considered for upcoming positions that align with your skills and qualifications.

Note: Successful applicants will be employees of Raise Limited working at ExxonMobil facilities with both ExxonMobil employees and other contractors.

Overview

ExxonMobil is seeking a Senior Water Treatment Engineer (Environmental Engineer III) to join the water team within Environmental Engineering part of Facilities Engineering at ExxonMobil Technology and Engineering (EMTEC) based at the Houston campus. The team is the corporate technical hub for water and wastewater treatment supporting upstream low carbon and downstream operations worldwide with most work centered on downstream refining and chemical complexes. Driven by country programs and a need for deep domain expertise this critical role will spend at least two-thirds of its time troubleshooting and solving day-to-day operational problems across raw water utilities water wastewater and produced water systems while also shaping early-phase project decisions on technology selection and design basis. The engineer joins a group of senior subject matter experts who support the principal engineers and help develop early-career engineers at the Kuala Lumpur technology center. This is a 12-month contract with strong potential for extension

Responsibilities

  • Troubleshoot and resolve day-to-day operational issues in raw water utilities water wastewater and produced water systems at ExxonMobil sites worldwide.
  • Lead technical investigations root cause analyses treatment chemistry evaluations and corrective actions to improve system performance and reliability.
  • Serve as the go-to technical resource for site operations teams that escalate water treatment problems they cannot solve locally.
  • Optimize biological wastewater treatment ion exchange membrane and oil-water separation systems at operating brownfield facilities.
  • Support boiler feed water production and water chemistry programs that are critical to site utilities and steam systems.
  • Guide early-phase (Stage 2 and Stage 3) capital projects on treatment technology selection and development of the design basis.
  • Provide technical oversight through design contractor execution startup and performance optimization for existing and greenfield facilities.
  • Serve as Lead Process Engineer and/or Technology Lead on water wastewater and produced water capital projects as assigned.
  • Evaluate and deploy established emerging and proprietary water treatment technologies in line with engineering standards and best practices.
  • Advise management on the technical operational business and sustainability risks of water treatment reduction and reuse solutions.
  • Partner with operations engineering research and business teams to develop water stewardship reuse and resource optimization strategies.
  • Mentor and coach early- and mid-career engineers including the Kuala Lumpur technology center team to build technical capability and institutional knowledge.
  • Travel to North American sites on an as-needed basis to support critical operational issues.

Qualifications

Required Qualifications

  • Bachelors degree (minimum) in Chemical Environmental Civil or a related engineering discipline.
  • 10 years of experience in industrial water wastewater and/or produced water treatment water reuse or process engineering.
  • Hands-on troubleshooting experience on operating industrial water or wastewater systems beyond design and commissioning alone.
  • Deep expertise in one or more of the following: biological wastewater treatment water chemistry (boiler feed or produced water) ion exchange and membrane processes or oil-water separation and produced water treatment.
  • Experience supporting both operating facilities and capital project execution.
  • Proven ability to lead multidisciplinary teams and influence technical decisions across organizations.
  • Strong analytical problem-solving and communication skills.
  • Proficiency in Excel and Word as the teams design practices and tools are largely Excel-based.
  • Ability to work on-site at the Houston campus the majority of the week with flexibility for up to two remote days.
  • Ability to flex working hours for occasional early morning and evening calls with global teams.
  • Ability to work effectively both independently and as part of a collaborative team.

Preferred Qualifications

  • Working experience across several water streams (raw water utilities water industrial wastewater and produced water).
  • Industrial background in oil and gas refining petrochemicals chemicals power generation or similar sectors favored over municipal experience.
  • Experience with boiler feed water treatment and steam system chemistry.
  • Early-phase project experience in technology selection and design basis development.
  • Proficiency with water chemistry modeling software such as OLI or with wastewater process modeling tools.
  • Experience mentoring or developing junior engineers.

Looking for meaningful work We can help

Raise is an established hiring firm with over 65 years of experience. We believe strongly in making the world a better place through work which is why were a certified B Corporation and donate 10% of our profits to charity.

We strive to build teams that reflect the diversity of the communities we work in. We encourage all qualified applicants to apply including people from traditionally underrepresented groups such as women visible minorities Indigenous peoples people identifying as LGBTQ2SI veterans and people with visible/nonvisible disabilities.

We have a dedicated webpage for accommodations where you can learn more about what we offer and request accommodation: order to submit candidates for roles our clients will sometimes require personal information to confirm the identity of applicants and their legal status to work. Raise will never ask you for personal or banking information unless you have been selected for a job. If you are ever unsure about the legitimacy of this or another job posting by Raise (or have any other questions) please contact us at 1 or

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Required Experience:

Senior IC