Senior Process Design Engineer

Zwitter Co has developed a breakthrough in materials science - a new class of zwitterionic membranes with unprecedented fouling resistance. Our membrane solutions perform beyond the limits of traditional filtration, making it practical to treat complex wastewater, purify water for reuse, and maximize efficiency in food processing application.

Zwitter Co serves customers in more than 20 countries across food and beverage, agricultural, and industrial sectors. We are rapidly investing in our technology, equipment, and global services platform to help our industrial customers achieve their most ambitious sustainability and growth targets.

We are grateful to have been named as Fast Company’s Top Innovators of 2024 and featured on the 2025 & 2026 Global Cleantech 100.

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…