Wastewater Treatment Systems Engineer

RSI EnTech, LLC; Fernald (OH); On-site; USD 65,000 - 75,000; Full time

Benefits offered by this job

PTO plan

FEHB medical

401K (100% match)

Life insurance

Short/Long disability

Job summary

RSI EnTech, LLC is seeking an Operations Engineer to oversee wastewater treatment facilities’ operation, maintenance, and optimization at Fernald, OH. The role combines hands-on fieldwork with system-level troubleshooting to ensure regulatory compliance and efficiency.

The position requires 50% field presence, travel up to 10%, and a starting salary in the $65k–$75k range. A valid driver’s license is required and a bachelor’s degree in a related field is preferred.

Qualifications

• Bachelor’s degree in mechanical, environmental, or related field.
• 0-5 years of relevant industrial maintenance/field engineering experience.

Responsibilities

• Perform regular field inspections of site infrastructure and treatment systems.
• Develop and maintain operational procedures.
• Collect, manage and report operational data.
• Troubleshoot and oversee repairs for pumps, valves, VFDs, and other equipment.
• Monitor PLC/SCADA control logic and support maintenance.
• Participate in project design reviews from a mechanical engineering perspective.
• Interact with subcontractors and vendors.

Skills

Mechanical eng

Field work

Troubleshooting

Communication

MS Office

Education

Bachelors in Mechanical Eng

Tools

CAD software

Plc/SCADA

P&IDs

Job description

About RSI

RSI is a dynamic group of companies that has provided services to major federal clients and Fortune 500 engineering and construction companies since 1996. We have experience in complex, highly regulated markets providing environmental, nuclear, construction management, project delivery, and specialty professional services while maintaining an excellent safety record.

We offer a full range of benefits including a generous PTO plan, paid holidays, FEHB medical, dental, vision, 401K (100% match up to 4% eligible compensation) and 100% immediate vesting, basic and supplemental life insurance, and short- and long-term disability.

RSI is headquartered in Oak Ridge, Tennessee, and is a wholly owned operating company of ASRC Industrial (AIS). AIS is a wholly owned operating company of Arctic Slope Regional Corporation (ASRC), an Alaska Native Corporation (ANC). Through ASRC, we are a certified Minority Business Enterprise (MBE) and Small Disadvantaged Business (SDB), and we also offer 8(a) options.

Position Summary

RSI is recruiting an Operations Engineer who will be responsible for the technical operation, maintenance, and optimization of wastewater treatment facilities and infrastructure to ensure regulatory compliance and operational efficiency. This role applies mechanical engineering principles to ensure the reliability of site operations and treatment systems through hands‑on field assessment, troubleshooting, and project support.

Job Title: Wastewater Treatment Systems Engineer
Location(s): Fernald, OH
Status: Full-Time
FLSA: Exempt

Hiring Range: $65,000.00 -$75,000.00 per year. (The anticipated starting salary is based on the posted minimum requirements for this position. The offered salary will be based upon the selected applicant’s education, training, and experience.)

The position requires 50% time in the field. Travel may be required 10% of the time.

Essential Duties and Responsibilities

• Perform regular field inspections and technical assessments of site infrastructure, including groundwater and leachate treatment systems.
• Develop and maintain operational procedures.
• Collect, manage and report operational data.
• Troubleshoot and oversee repairs for mechanical components such as HVAC systems, pumps, motors, piping, valves, and Variable Frequency Drives (VFDs).
• Monitor, troubleshoot, and support the maintenance of Programmable Logic Controllers (PLCs) and associated control logic for site treatment and infrastructure.
• Participate in project design reviews to provide input from a mechanical engineering and control system perspective.
• Interact with and oversee subcontractors and vendors.

Required Education and Years of Relevant Experience

• Bachelor’s degree in mechanical engineering, mechanical engineering technology, environmental engineering, or related field.
• 0-5 years of relevant experience in industrial maintenance, wastewater treatment, or field engineering.

Licenses and Certifications

• Valid Driver’s License.

Required Skills and Abilities

• Proficient in mechanical systems and fluid dynamics processes. Preferred skill set in industrial water treatment processes.
• Oversee the installation and commissioning of pumps, valves, instrumentation, and control systems programmable logic controls and supervisory control and data acquisition (PLCs/SCADA).
• Demonstrated ability to perform hands‑on field work, including physical inspections and technical troubleshooting in an outdoor/industrial environment.
• Familiarity with relevant industry standards and regulations related to mechanical systems and environmental controls.
• Proficiency with piping and instrumentation diagrams (P&IDs), CAD software, automation/control platforms, and environmental compliance testing
• Excellent communicator, both verbally and in written form.
• Proficient in Microsoft Office (Word, Excel, and Outlook).

Clearance and Health Requirements

• Criminal Background Check
• Pre-placement Drug Screening
• Fit for Duty Test (if applicable)

Essential Physical Requirements

Medium: Work involves moving objects by exerting 20 to 50 pounds of force occasionally, or 10 to 25 pounds of force frequently, or an above-negligible amount and up to 10 pounds constantly. Physical demand requirements are in excess of those for light work.

Job Posting Close Date

10/09/2026

EEO Statement

ASRC Industrial (AIS) and its operating companies affords equal opportunity in employment to all individuals regardless of race, color, religion, sex, age, national origin, pregnancy, familial status, disability status, veteran status, citizenship status, genetic information or any other characteristic protected under Federal, State or Local law. AIS is an Equal Opportunity Employer. ASRC Industrial, (“AIS”), and its Operating Companies will never ask job candidates for sensitive personal information (such as Social Security numbers, banking details, or payment of any kind) during the hiring process. If you receive unsolicited communications from individuals claiming to represent ASRC Industrial using non-official email addresses (e.g., not from @asrcindustrial.com), please report the message and do not engage. Official job postings can always be found on our website: asrcindustrial.com/careers/ or https://rsienv.applicantstack.com/x/opening