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Membrane Engineer

We are seeking a detail-oriented and proactive Membrane Engineer to support our engineering and installation teams for high purity water systems. The Membrane Engineer is responsible for the design, application, and optimization of membrane-based water and wastewater treatment systems, including reverse osmosis (RO), nanofiltration (NF), ultrafiltration (UF), and microfiltration (MF). This role leads technical system sizing, process design, membrane selection, and performance modeling to deliver reliable, cost-effective treatment solutions for industrial and municipal customers.

The position serves as a key technical resource supporting sales, project execution, manufacturing, and field service teams. Responsibilities include evaluating water chemistry, developing treatment strategies, preparing technical proposals, supporting pilot studies, and providing startup and commissioning support.

A little about us

Applying for a new job is a little like entering uncharted territory. We want you to feel 100% confident about the application process, the position and our company before committing your time to apply, so that none of the above comes as a surprise. Let’s start with some information about our company, Chem-Aqua, so you can get to know us better.

Chem-Aqua is a subsidiary company of NCH Corporation, a privately held, family-owned, global business headquartered in Irving, Texas, near Dallas. NCH has more than 7,500 employees, offices and facilities on six continents, and clients in more than 50 countries. This includes the corporate headquarters as well as the other subsidiary companies. We clean and conserve water, save energy, and deliver best-in-class maintenance solutions, with a focus on industrial and commercial businesses.

• About Chem-Aqua and our history
• Our products and solutions
• NCH brands and divisions

Culture and benefits

We’re a global company with a family feel, offering the same benefits of an international corporation with the personal relationships of a small business. Working in our small teams and close-knit environment, you’d never guess we had a 7,500+ employee head count. We realize a job is more than just a job – it’s an extension of your life and family – and we’re committed to maintaining just that. For us, culture is not just a perk; it’s essential to how we thrive. And that’s speaking for 100 years in the business!

• Employee-centric environment (regular corporate activities, personal relationships, small teams)
• Family-first attitude (work-life balance support, paid parental leave, flexible hours)
• Approachable leadership (collaboration with top leaders, open-door policy)
• Growth-oriented mindset (autonomy, creative freedom to explore new ideas)
• Paid vacation and holiday leave
• Wellness initiatives (on-site fitness facility and cafeteria, planned activities)
• Community involvement (volunteering, fundraisers, charity events, school sponsorships and donations)
• Employee recognition programs (appreciation week, awards and ceremonies)
• Personal and professional development and growth
• Financial wellness (retirement options, 401K match)
• Benefits package (medical, dental, vision, life, long and short-term disability)

If this sounds like a fit for you so far, keep reading.

Key Responsibilities:

• Design and engineer membrane-based water and wastewater treatment systems (RO, NF, UF, MF), including system sizing, membrane modeling, hydraulic calculations, and equipment selection.
• Develop process flow diagrams (PFDs), P&IDs, equipment layouts, and technical documentation to support proposals and project execution.
• Review customer water analyses and develop treatment strategies, performance projections, and technical proposals.
• Support pilot studies, analyze operating data, and optimize system performance, recovery, and lifecycle cost.
• Provide technical support throughout the project lifecycle, collaborating with sales, project management, manufacturing, and service teams.
• Deliver field support including site evaluations, system startup, commissioning, troubleshooting, and customer training.
• Contribute to continuous improvement initiatives, standard product development, and evaluation of emerging membrane technologies.

Qualifications:

• Bachelor’s degree in Chemical Engineering, Environmental Engineering, Mechanical Engineering, or related field.
• 5-7 years of experience in membrane-based water treatment systems.
• Strong knowledge of RO, NF, UF, and MF design principles.
• Experience with membrane projection software and process modeling tools.
• Working knowledge of scaling indices (LSI, S&DSI), fouling mechanisms, and pretreatment chemistry.
• Familiarity with industrial, municipal, and reuse applications preferred.
• Ability to interpret water chemistry reports and recommend pretreatment solutions.
• Proficient in SolidWorks, AutoCAD or equivalent design software is a plus.
• Strong written and verbal communication skills.
• Approximately 30% travel is required to support site assessments, system startups, troubleshooting, and customer training.

Key Competencies:

• Analytical and problem-solving skills
• Strong process design capability
• Customer-facing technical communication
• Project ownership mindset
• Collaborative team player
• Ability to manage multiple projects simultaneously

Sound like a fit for you?

If yes, jump aboard, and apply today.

For next steps, expect a direct phone or email response once we are able to review your application. We are committed to responding to all applicants, no matter the outcome, so we appreciate your patience to allow time for this. In the meantime, learn more about Chem-Aqua and our culture by checking out our LinkedIn or Facebook pages.

We are an Equal Opportunity Employer and do not discriminate against any employee or applicant for employment because of race, color, sex, age, national origin, religion, sexual orientation, gender identity, status as a veteran, and basis of disability or any other federal, state or local protected class.