Senior Process Design Engineer

Zwitter Co is seeking an experienced Senior Process Design Engineer to join our team. This role will be a key contributor in ensuring the successful, high-impact application of Zwitter Co's cutting-edge membranes across various industries with an emphasis on water and wastewater applications.

The candidate will play an essential role in developing Zwitter Co-powered membrane filtration systems for customers and partners primarily located in North America and will serve as a subject matter expert on the implementation and integration of Zwitter Co membrane systems into industrial process and wastewater operations. The ideal candidate will have deep experience in water treatment system estimating, proposal development, system design and standard platform development/management.

The candidate will have practical experience with crossflow filtration system design, including spiral wound reverse osmosis and ultrafiltration; membrane process integration within larger treatment plants; modular system (skidded and containerized) design, process and/or wastewater applications. Experience integrating pretreatment and membrane operations is particularly valuable.

Key to this role is the ability to work across functions in a fast-paced dynamic environment. Successful candidates will be initiative‑taking and able to self‑manage work effort across different priorities without losing track of less urgent projects. Candidates should be passionate about membrane technology and eager to work on the forefront of the water treatment industry, supporting a range of customers in solving challenges with our products.

• Lead the design and detail engineering of Zwitter Co membrane filtration systems.
• Using high-level process designs (including membrane performance parameters) provided by applications engineering, develop piping and instrumentation diagrams (P&'s) for both custom systems and standardized modular offerings.
• Specify requirements for all system components, including type, MoC, and performance characteristics of pumps, valves, tanks, and instruments.
• Determine material of construction requirements for systems based on expected operating conditions, required equipment life, and cost considerations.
• Provide thoughtful tradeoff analysis and lead the decision‑making on process design philosophy for the implementation of multiple trains, redundancy, and integration with upstream and downstream unit operations.
• Lead value engineering efforts, with particular emphasis on cost improvement in standard or modular system designs.
• Support field engineering with technical advice for repairing, servicing, or modifying Zwitter Co-owned equipment as requested.
• Evaluate, mitigate, and communicate technical risks associated with new applications, projects, and/or partners.
• Collaborate with engineering project managers on the procurement of engineered systems, including mitigation strategies to accommodate unexpected design changes.
• Maintain accurate and organized project data and records.
• Author technical guidance documents and give oral/written presentations to customers, industry partners, and Zwitter Co business leaders as needed.
• Maintain an adept understanding of product knowledge and application.
• Provide post‑sales technical support for partners and end users to ensure customer success, including visits to customer sites.
• Provide mentorship to less experienced members of the engineering team.
• Other duties as reasonably assigned.

• A university degree in an engineering discipline is required unless the candidate has extensive previous work experience in a comparable role. A degree in chemical, civil, environmental, or mechanical engineering is preferred.
• 4 to 10 years of…