1

Weekend Reverse Osmosis Engineer Jobs (NOW HIRING)

Field Service Engineer III

Randolph, MA · On-site

$100K - $125K/yr

Reverse Osmosis and Water Filtration equipment * Controls narrative suggestions and improvement ... Travel: 50% of the time, typically home on weekends Company Service Vehicle will be provided The ...

UF & RO Operation: Monitor ultrafiltration and reverse osmosis equipment, including system ... Ability to work a 12-hour 2-3-2 rotating schedule, including weekends and holidays as scheduled.

Wastewater Operator

Mcadoo, PA · On-site

$21.50 - $29.75/hr

UF & RO Operation: Monitor ultrafiltration and reverse osmosis equipment, including system ... Ability to work a 12-hour 2-3-2 rotating schedule, including weekends and holidays as scheduled.

$19.50 - $26.50/hr

... ionizing and reverse osmosis units and stills), clean steam, building steam and condensate ... Required -High School Diploma or Equivalent (GED) and State Stationary Engineer Seal or equivalent ...

New

Conduct visual inspections and monitor water systems including reverse osmosis units, electro ... Flexibility to work a 2-2-3 rotating schedule with 6PM-6AM shifts, including weekends, holidays ...

... to engineers, investment bankers, financial analysts, legal counsel, and internal-client ... Demonstrated expertise in Reverse Osmosis treatment processes and membrane performance modeling

... to engineers, investment bankers, financial analysts, legal counsel, and internal-client ... D.) Familiarity with cutting-edge Reverse Osmosis treatment processes and related membrane ...

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 ...

Wastewater Operator

Mcadoo, PA · On-site

$21.50 - $29.75/hr

UF & RO Operation: Monitor ultrafiltration and reverse osmosis equipment, including system ... Ability to work a 12-hour 2-3-2 rotating schedule, including weekends and holidays as scheduled.

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

Engineer, Applications

Tustin, CA · On-site

$90 - $120/hr

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 ...

Showing results 21-40

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 Sep 4, 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 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 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.

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 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.

More about Weekend Reverse Osmosis Engineer jobs

What cities are hiring for Weekend Reverse Osmosis Engineer jobs?

Cities with the most Weekend Reverse Osmosis Engineer job openings:

What are the most commonly searched types of Reverse Osmosis Engineer jobs?

The most popular types of Reverse Osmosis Engineer jobs are:

What states have the most Weekend Reverse Osmosis Engineer jobs?

States with the most job openings for Weekend Reverse Osmosis Engineer jobs include:

What job categories do people searching Weekend Reverse Osmosis Engineer jobs look for?

The top searched job categories for Weekend Reverse Osmosis Engineer jobs are:

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, 66% Full Time, 29% Part Time, 3% Contract, and 1% Nights. Highlights an 94% Physical, 1% Hybrid, and 5% Remote job distribution, with an average salary of $136,286 per year, or $65.5 per hour.

Sr. Process Engineer - Semi Conductor (Remote with travel)

Parsons

Remote

$106K - $137K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 24 days ago


Parsons rating

7.7

Company rating: 7.7 out of 10

Based on 46 frontline employees who took The Breakroom Quiz

268th of 452 rated engineering


Job description

In a world of possibilities, pursue one with endless opportunities. Imagine Next!At Parsons, you can imagine a career where you thrive, work with exceptional people, and be yourself. Guided by our leadership vision of valuing people, embracing agility, and fostering growth, we cultivate an innovative culture that empowers you to achieve your full potential. Unleash your talent and redefine what's possible.

Job Description:

Parsons is seeking a Senior Process Engineer - Semiconductor Water Treatment / Ultrapure Water with strong experience supporting advanced manufacturing and semiconductor facilities. The ideal candidate will have demonstrated expertise in ultrapure water (UPW), industrial water treatment, and wastewater treatment systems within semiconductor or other high-purity manufacturing environments.

*********Candidates should either be based in Boise, Idaho or can work remote and travel to Boise 2 weeks/month. *************

The Senior Process Engineer will lead process engineering activities associated with water and wastewater treatment systems, working closely with multidisciplinary teams to develop, optimize, and implement solutions that meet client, regulatory, operational, and reliability requirements.

Key Responsibilities

  • Lead the design, development, and optimization of ultrapure water, industrial water treatment, and wastewater treatment systems for semiconductor manufacturing facilities.

  • Support semiconductor fab projects involving UPW production and distribution, wastewater treatment, water reclamation/reuse, and associated process utility systems.

  • Develop and review process flow diagrams (PFDs), P&IDs, process calculations, equipment specifications, data sheets, and design documentation.

  • Perform water and mass balances, hydraulic calculations, equipment sizing, chemical consumption calculations, and treatment system evaluations.

  • Develop and evaluate treatment processes utilizing technologies such as reverse osmosis (RO), ultrafiltration (UF), ion exchange, electrodeionization (EDI), demineralization, filtration, chemical treatment, and polishing systems.

  • Establish process design criteria, water quality requirements, operating parameters, and equipment requirements for water treatment systems.

  • Evaluate vendor treatment technologies, equipment selections, technical proposals, and supplier submittals.

  • Collaborate with mechanical, piping, electrical, instrumentation and controls, civil/structural, and manufacturing teams to integrate treatment systems into overall facility design.

  • Interface with clients, vendors, and project teams to resolve technical issues and maintain alignment with project requirements.

  • Perform process troubleshooting, system performance evaluations, and technical assessments for existing and proposed treatment systems.

  • Ensure engineering deliverables comply with applicable industry standards, environmental requirements, safety requirements, and client specifications.

  • Support commissioning, startup, system optimization, and operational readiness activities.

  • Provide technical guidance and mentorship to junior engineers and designers.

Required Qualifications

  • Bachelor's degree in Chemical Engineering, Environmental Engineering, or a related engineering discipline.

  • 8+ years of relevant process engineering experience.

  • Demonstrated experience in industrial water and/or wastewater treatment process design.

  • Demonstrated experience with ultrapure water (UPW) or high-purity water systems.

  • Strong knowledge of water treatment technologies such as:

    • Reverse osmosis (RO)

    • Ultrafiltration (UF)

    • Ion exchange

    • Electrodeionization (EDI)

    • Demineralization

    • Filtration and polishing systems

    • Chemical treatment systems

    • Wastewater treatment and water reuse systems

  • Strong understanding of water chemistry, treatment process selection, water quality requirements, and system performance.

  • Proficiency in developing and reviewing:

    • Process Flow Diagrams (PFDs)

    • Piping and Instrumentation Diagrams (P&IDs)

    • Water and mass balances

    • Process calculations

    • Equipment and system specifications

    • Process data sheets and design documentation

  • Ability to evaluate and specify water treatment equipment and vendor packages.

  • Strong analytical, communication, collaboration, and problem-solving skills.

  • Ability to work on-site in Boise, Idaho, or relocate as needed.

Preferred Qualifications

  • Experience with water treatment systems supporting semiconductor fabs, microelectronics, or other advanced manufacturing facilities.

  • Experience with large-scale UPW systems, wastewater treatment systems, and water reclamation/reuse applications.

  • Experience supporting semiconductor fab expansions, retrofits, or greenfield projects.

  • Familiarity with semiconductor facility process utilities and high-purity manufacturing requirements.

  • Experience with commissioning, startup, troubleshooting, and optimization of water treatment systems.

  • Knowledge of project delivery in EPC, design-build, or consulting engineering environments.

  • Professional Engineer (PE) license or ability to obtain.

  • Master's degree in engineering or a related discipline.

Why Join Parsons

At Parsons, we're committed to delivering innovative engineering solutions on some of the world's most complex projects. We value technical excellence, collaboration, integrity, and a forward-thinking approach to problem-solving. Joining our team means working alongside talented professionals while helping shape the future of advanced manufacturing and semiconductor infrastructure.

Security Clearance Requirement:

NoneThis position is part of our Critical Infrastructure team.For more than 80 years, our experts have designed and delivered the critical infrastructure that connects and protects communities around the world. We work in collaborative teams, both within the company and with our partners and customers, to plan, design, build, and modernize infrastructure. We take special pride in projects and solutions that improve communities as well as people's quality of life by promoting economic growth, enhancing mobility, and increasing sustainability and resiliency. Powered by our people, we provide the imagination necessary to support our customers' visions-and to help them see what's next!Salary Range: $88,400.00 - $154,700.00We value our employees and want our employees to take care of their overall wellbeing, which is why we offer best-in-class benefits such as medical, dental, vision, paid time off, Employee Stock Ownership Plan (ESOP), 401(k), life insurance, flexible work schedules, and holidays to fit your busy lifestyle!This position will be posted for a minimum of 3 days and will continue to be posted for an average of 30 days until a qualified applicant is selected or the position has been cancelled.Parsons is an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, veteran status or any other protected status.We truly invest and care about our employee's wellbeing and provide endless growth opportunities as the sky is the limit, so aim for the stars! Imagine next and join the Parsons quest-APPLY TODAY!

Parsons is aware of fraudulent recruitment practices. To learn more about recruitment fraud and how to report it, please refer tohttps://www.parsons.com/fraudulent-recruitment/.


What Parsons employees say

Pay

Benefits

Hours and flexibility

Workplace

Get the full story on Breakroom