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Weekend Reverse Osmosis Engineer Jobs (NOW HIRING)

Engineer, Applications

Tustin, CA

  • Medical

  • Dental

  • Vision

  • Retirement

The Application Engineer (AE) supports CECO Environmental's Industrial Water (IW) platform and ... Create and Develop RO (Reverse Osmosis), instrumentation and control designs according to specified ...

The Application Engineer IV will focus on complex wastewater and process water solutions across ... reverse osmosis, Clean-In-Place (CIP) systems, regenerable Ion Exchange (IX), and Continuous ...

The Application Engineer IV will focus on complex wastewater and process water solutions across ... reverse osmosis, Clean-In-Place (CIP) systems, regenerable Ion Exchange (IX), and Continuous ...

Lead Operating Engineer

Redmond, WA · On-site

$114K - $151K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

Monitor operation, adjust, and maintain refrigeration, chilled water, reverse osmosis system, air ... Operating Engineer (BOC) or other applicable licenses is a plus with Universal CFC (EPA608) license ...

The Application Engineer IV will focus on complex wastewater and process water solutions across ... reverse osmosis, Clean-In-Place (CIP) systems, regenerable Ion Exchange (IX), and Continuous ...

The Application Engineer IV will focus on complex wastewater and process water solutions across ... reverse osmosis, Clean-In-Place (CIP) systems, regenerable Ion Exchange (IX), and Continuous ...

The Application Engineer III will focus on complex wastewater and process water solutions across ... reverse osmosis, Clean-In-Place (CIP) systems, regenerable Ion Exchange (IX), and Continuous ...

The Application Engineer IV will focus on complex wastewater and process water solutions across ... reverse osmosis, Clean-In-Place (CIP) systems, regenerable Ion Exchange (IX), and Continuous ...

The Application Engineer IV will focus on complex wastewater and process water solutions across ... reverse osmosis, Clean-In-Place (CIP) systems, regenerable Ion Exchange (IX), and Continuous ...

Mechanical Engineer

Lockhart, TX · On-site

$130K - $170K/yr

... our Reverse Osmosis Centrifuge; a safety-critical, high-RPM system operating under significant ... You will work closely with our engineering team throughout the pilot phase and into commercial ...

Electrical Engineer

Lockhart, TX · On-site

$120K - $155K/yr

... our Reverse Osmosis Centrifuge. This is a hands-on role requiring competent experience with ... controls engineering * Hands-on experience with PCB design (schematic capture and layout)

Controls & Startup Engineer

Tampa, FL · On-site

$78K - $102K/yr

This is a high-travel field engineering role - expect up to 75% travel to project sites and ... Experience in seawater reverse osmosis (SWRO) or brackish water reverse osmosis (BWRO) desalination ...

Controls & Startup Engineer

Tampa, FL · On-site

$78K - $102K/yr

Experience in seawater reverse osmosis (SWRO) or brackish water reverse osmosis (BWRO) desalination ... PLC programming: Program, modify, commission, and troubleshoot Allen-Bradley Logix PLC systems ...

Showing results 41-60

Weekend Reverse Osmosis Engineer information

See salary details

$82K

$136.3K

$195K

How much do weekend reverse osmosis engineer jobs pay per year?

As of Aug 16, 2026, the average yearly pay for weekend reverse osmosis engineer in the United States is $136,286.00, according to ZipRecruiter salary data. Most workers in this role earn between $89,000.00 and $178,000.00 per year, depending on experience, location, and employer.

What is the difference between Weekend Reverse Osmosis Engineer vs Weekend Water Treatment Technician?

AspectWeekend Reverse Osmosis EngineerWeekend Water Treatment Technician
CertificationsOSHA safety training, technical certifications in RO systemsOSHA safety training, general water treatment certifications
Work EnvironmentIndustrial facilities, water treatment plantsMunicipal water plants, industrial sites
Job ResponsibilitiesMaintaining, repairing, and optimizing reverse osmosis systemsOperating, monitoring, and maintaining water treatment equipment

The Weekend Reverse Osmosis Engineer specializes in maintaining and repairing reverse osmosis systems, requiring specific technical certifications. In contrast, the Weekend Water Treatment Technician handles broader water treatment equipment, often in municipal settings. Both roles involve safety training and work in water industry environments, but the engineer's focus is more technical and system-specific.

What is a weekend reverse osmosis engineer?

A Weekend Reverse Osmosis Engineer is a specialized technician or engineer responsible for monitoring, maintaining, and troubleshooting reverse osmosis (RO) water filtration systems during weekend shifts. Their work ensures continuous operation and water quality compliance, often in industrial, municipal, or commercial facilities. Duties typically include conducting system checks, performing routine maintenance, adjusting system parameters, repairing equipment, and documenting performance data. Weekend shifts are essential for facilities that require 24/7 water treatment, minimizing downtime and addressing issues promptly outside regular hours.

What skills and qualifications are needed to thrive as a weekend reverse osmosis engineer?

To thrive as a Weekend Reverse Osmosis Engineer, you need a solid understanding of water treatment processes, mechanical systems, and a degree or certification in chemical, environmental, or mechanical engineering. Familiarity with SCADA systems, water quality testing equipment, and maintenance management software is typically required. Strong problem-solving abilities, attention to detail, and effective communication skills set top performers apart in this role. These skills are crucial for ensuring the safe, efficient, and reliable operation of reverse osmosis systems during critical weekend shifts.

What does a weekend reverse osmosis engineer do?

As a Weekend Reverse Osmosis Engineer, your shifts usually involve monitoring the water treatment systems, conducting routine maintenance, and troubleshooting any issues that arise to ensure continuous operation. Weekend shifts often require greater autonomy, as staffing levels may be lower than during the week, making strong problem-solving skills essential. You may also be responsible for documenting system performance and coordinating with remote support teams if complex issues occur. This hands-on role provides an excellent opportunity to develop technical expertise and gain leadership experience in a critical operations environment.
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Infographic showing various Weekend Reverse Osmosis Engineer job openings in the United States as of August 2026, with employment types broken down into 1% As Needed, 68% Full Time, 26% Part Time, 4% Contract, and 1% Nights. Highlights an 95% Physical, 1% Hybrid, and 4% Remote job distribution, with an average salary of $136,286 per year, or $65.5 per hour.

Water and Wastewater Engineer -- Senior Lead/Consultant

Sargent & Lundy

Chicago, IL • On-site

$134K - $205K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 22 days ago


Sargent & Lundy rating

8.4

Company rating: 8.4 out of 10

Based on 10 frontline employees who took The Breakroom Quiz

123rd of 449 rated engineering


Job description

Description

This position offers the opportunity to take a leading role in growing Sargent & Lundy's water and wastewater practice while applying deep technical expertise across a diverse portfolio of clients in the energy, industrial, and municipal markets. In this position, you will:

  • Lead and manage the design, evaluation, and review of water supply and wastewater treatment systems for power generation, data centers, industrial facilities, and municipal clients.
  • Assist in the selection, training, development and management of technical personnel
  • Prepare and oversee preliminary engineering studies for new installations, system modifications, and retrofits of water and wastewater treatment systems.
  • Independently verify designs of vendor-supplied treatment equipment and systems, including reverse osmosis, zero liquid discharge (ZLD), biological treatment, and chemical conditioning systems.
  • Analyze complex water quality and treatment challenges, develop technical solutions, and present findings and recommendations to clients and internal stakeholders.
  • Evaluate the impact of federal, state, and local regulatory requirements (e.g., Clean Water Act, Effluent Limitation Guidelines, NPDES) on water and wastewater systems for new and existing facilities.
  • Prepare complex technical reports, specifications, and mass/water balances.
  • Travel to client offices and project sites as needed for project reviews and client engagement.
  • Serve as a key leader in expanding S&L's water and wastewater practice, including identifying supporting proposal development, and cultivating client relationships.
  • Collaborate with project managers and practice leadership to establish work priorities across multiple concurrent projects.
  • Maintain and enhance knowledge of emerging technologies, regulatory trends, and industry standards relevant to water and wastewater treatment.
  • Represent S&L at industry conferences, code committees, and professional organizations to elevate the firm's visibility in the water sector.
Qualifications

We do not sponsor employees for work authorization in the U.S. for this position.

  • BS in Chemical Engineering, Environmental Engineering, or a closely related discipline from an ABET-accredited program.
  • Ten or more years of experience in water and/or wastewater treatment engineering, with demonstrated expertise in systems serving the power, industrial, municipal or data center markets.
  • Strong Leadership and organization skills.
  • Proven ability to lead multi-disciplinary project teams and manage complex, concurrent projects.
  • Experience in business development activities such as proposal writing, scope development, and client management.
  • Excellent written and verbal communication skills, including presenting technical material to non-technical audiences.
  • Mentor and develop junior and mid-level engineers, fostering a collaborative and technically rigorous team culture.

Valued but Not Required Skills and Experience:

  • Professional Engineer (PE) license.
  • Hands-on experience with water treatment technologies such as reverse osmosis, ion exchange, ZLD, biological nutrient removal, cooling water treatment, and industrial wastewater systems.
  • Familiarity with federal environmental regulatory programs including the Clean Water Act, NPDES permitting, Effluent Limitation Guidelines (ELGs), and Resource Conservation and Recovery Act (RCRA).
  • Experience with water modeling or simulation software.
  • Background supporting environmental permitting for power generation, data centers, or industrial facilities.
  • Familiarity with water reuse, water recycling, or closed-loop treatment system design.
Award-Winning Benefits

At Sargent & Lundy, we care about the health and well-being of our employees. Our commitment extends beyond the workplace, offering comprehensive healthcare plans and generous paid time off to support our team members in every aspect of their lives. We understand the importance of work-life balance, which is why we are proud to provide competitive, award-winning benefits. Our dedication to employee satisfaction has earned us the prestigious Top Workplaces Culture Excellence Award for compensation and benefits in 2022, 2023, and 2024.

Health & WellnessFinancial BenefitsWork-Life Balance
  • Health Plans: Medical, Dental, Vision
  • Life & Accident Insurance
  • Disability Coverage
  • Employee Assistance Program (EAP)
  • Back-Up Daycare
  • FSA & HSA
  • 401(k)
  • Pre-Tax Commuter Account
  • Merit Scholarship Program
  • Employee Discount Program
  • Corporate Charitable Giving Program
  • Tuition Assistance
  • First Professional Licensure Bonus
  • Employee Referral Bonus
  • Paid Annual Personal/Sick Time (PST)
  • Paid Vacation
  • Paid Holidays
  • Paid Parental Leave
  • Paid Bereavement Leave
  • Flexible Work Arrangements
Compensation Range$134,546 - $205,557Transparency StatementSargent & Lundy discloses compensation ranges that comply with all local and state regulations. The total compensation package for eligible positions will include a base salary or an hourly rate and a comprehensive benefits package, reflecting our commitment to rewarding performance and supporting the overall well-being of our employees. Individuals may also be eligible to participate in our yearly discretionary bonus.Equal Opportunity

Sargent & Lundy is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, national origin, disability status, protected veteran status, or any protected status as defined by applicable law.

Employment Type: FULL_TIME

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About Sargent & Lundy

Sourced by ZipRecruiter

Sargent & Lundy is one of the most experienced full-service architect-engineering firms in the world. Founded in 1891, the firm is a global leader in power and energy with expertise in grid modernization, renewable energy, energy storage, nuclear power, and fossil fuels. Sargent & Lundy delivers comprehensive project services--from consulting, design and implementation to construction management, commissioning and operations/maintenance--with an emphasis on quality and safety. The firm serves public and private sector clients in the power and energy, gas distribution, industrial, and government sectors.

Industry

Civil engineering construction

Company size

1,001 - 5,000 Employees

Headquarters location

Chicago, IL, US

Year founded

1891

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