Wastewater Treatment Operator (WWT Operator)

Leidos LLC; Seattle (WA); On-site; USD 51,000 - 92,000; Full time

Job summary

Leidos is seeking a Wastewater Treatment Operator (WWT Operator) to operate, repair, and maintain a small-scale industrial dissolved air flotation (DAF) wastewater treatment plant. The role entails on-site DAF system operation, monitoring, and performance evaluation to ensure discharge permits are met.

Responsibilities include O&M, supervising subcontractors, and maintaining thorough documentation. The position requires a High school diploma with 2+ years of wastewater experience and a current

Qualifications

• High school diploma or equivalent and at least 2 years' relevant experience treating industrial wastewater.
• Current 40-Hour HAZWOPER certification with valid 8-Hour refresher training.
• Demonstrated experience in delivering field work in a safe manner.
• Ability to work independently to schedule and complete routine field duties.
• Good organizational and project documentation skills.
• Good communications skills and ability to interact with client and Leidos team.
• Valid driver’s license.
• Willingness to work at night/weekends/extended hours when site needs.

Responsibilities

• Perform O&M including operational checks, sampling and monitoring of pH, turbidity, temperature and surfactants, chemical calibration of pumps, bench top testing, equipment troubleshooting, and minor maintenance of mechanical components in accordance with equipment O&M Manuals.
• Schedule and oversee subcontractors conducting electrical and plumbing repairs of the system.
• Document compliance with project sampling procedures, including specific sample collection methods and documentation, complete daily logs and system documentation, and assist in data interpretation.
• May support sampling of groundwater, collecting water level data, and storm water sampling during precipitation events.
• Comply with Leidos site specific Health & Safety Plan.
• Communicate directly with the site facility engineer as well as the Leidos Project Engineer located in Oakland, CA.

Skills

Wastewater treatment

System monitoring

Sampling

Operations/maintenance

HAZWOPER

Independent work

Documentation

Communication

Valid driver's license

Shift flexibility

Tools

DAF knowledge

Washington State license/certification

Job description

Leidos is currently seeking a Wastewater Treatment Operator (WWT Operator) to provide full-time operation, repair and maintenance of a small-scale industrial dissolved air flotation (DAF) wastewater treatment plant. WWT Operator is responsible for onsite DAF operations (system operation, control and performance evaluation) to ensure industrial water quality meets the process needs and that effluent complies with discharge requirements of the facility permit(s).

Primary Responsibilities

• Perform O&M including operational checks, sampling and monitoring of pH, turbidity, temperature and surfactants, chemical calibration of pumps, bench top testing, equipment troubleshooting, and minor maintenance of mechanical components in accordance with equipment O&M Manuals.
• Schedule and oversee subcontractors conducting electrical and plumbing repairs of the system.
• Document compliance with project sampling procedures, including specific sample collection methods and documentation, complete daily logs and system documentation, and assist in data interpretation.
• May support sampling of groundwater, collecting water level data, and storm water sampling during precipitation events.
• Comply with Leidos site specific Health & Safety Plan.
• Communicate directly with the site facility engineer as well as the Leidos Project Engineer located in Oakland, CA.

Required Skills and Qualifications

• High school diploma or equivalent and at least 2 years' relevant experience treating industrial wastewater, to include: wastewater treatment plant operation, system monitoring, sampling, and operations/maintenance.
• Current 40-Hour HAZWOPER certification with valid 8-Hour refresher training.
• Demonstrated experience in delivering field work in a safe manner.
• Ability to work independently to schedule and complete routine field duties.
• Good organizational and project documentation skills.
• Good communications skills and ability to proactively interact with client and Leidos team.
• Valid driver’s license.
• Willingness to work during night/weekend/extended hours occasionally as necessitated by site needs.

Preferred Skills

• Knowledge of DAF wastewater treatment systems with a Certified Level II wastewater treatment operator.
• Certified Wastewater Treatment Operator for Washington State, or in the process of becoming certified.
• Forklift certification or the ability to obtain qualification/certification.

Physical Requirements

• Ability to wear required personal protective equipment (PPE), including hard hats, safety glasses, steel-toed boots, gloves, hearing protection, respirators, and chemical-resistant clothing as required.
• Ability to enter confined spaces and perform confined space work in accordance with applicable regulations and training requirements.
• Ability to lift, carry, push, and pull equipment, tools, hoses, pumps, and sample containers weighing up to 70 pounds, with or without reasonable accommodation.
• Ability to perform field and plant operations activities requiring manual dexterity and the use of hand and power tools.
• Ability to work at elevated heights and safely climb ladders, platforms, and catwalks.
• Ability to distinguish colors, read gauges and instrumentation, and observe operating conditions for process monitoring and troubleshooting.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting: August 19, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range

Pay Range $50,700.00 - $91,650.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here.

Securing Your Data Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to [e-mail].

Commitment and Diversity

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026.

For more information, visit www.Leidos.com.