Senior Process Engineer

Water Otter Job Board; Houston (TX); Remote; USD 140,000 - 180,000; Full time

Job summary

Cambrian Innovation is seeking a Sr. Process Engineer to lead design, optimization and deployment of advanced water treatment solutions for industrial clients. You will coordinate projects from concept through start‑up and work with project managers and customers.

The ideal candidate has 10+ years in process design, experience with high rate anaerobic treatment and MBR, strong communication, and the ability to thrive in a fast‑paced, entrepreneurial environment. PE license preferred.

Qualifications

• Bachelor's degree in engineering required.
• 10+ years of process design & integration experience in water/wastewater industry.
• Experience with EGSB/UASB, MBR, and biological nutrient removal systems.
• Strong communication and collaboration skills.
• PE license preferred.

Responsibilities

• Lead system design, installation, and start-up for projects.
• Provide system data analysis and prepare PFDs, mass balances, and equipment lists.
• Create basis of design documents with input from sales/applications.
• Prepare RFQs and procurement specs for major equipment.
• Support commissioning activities and FAT/SAT testing.
• Interface with Sales, Applications Engineering and Project Execution.
• Travel 10-30% to customer sites as needed.

Skills

Process design

Project coordination

Biological wastewater

Communication

Education

Bachelor's Degree in Engineering

Job description

Rev. March 2026

Title: Sr. Process Engineer Location: Remote

Reports to: Vice-President of Product & Process

Employment Type: Full-time

Qualifications: Bachelor’s Degree, 10+ years of experience

Basic Function

The Sr. Process Engineer–is a highly experienced Senior Process Engineer with a strong background in high rate anerobic treatment systems(EGSB, UASB and etc), aerobic membrane reactors (MBRs), and biological nutrient removal processes. The ideal candidate will have hands‑on experience in process engineering, with a focus on designing, optimizing, and implementing advanced water treatment solutions. This position will be responsible for creating preliminary and final process designs and will be responsible for coordinating small to mid‑scale projects and will bring an understanding of water and wastewater treatment technologies, specifically high rate anaerobic treatment (EGSB and UASB), dissolved air flotation, and MBR and nutrient removal processes. Additionally, the candidate must be capable of working with a team of project managers and building relationships with potential clients and vendors.

The Process Engineer must have experience in water or chemical process design, strong communication and selforganizing skills. Top candidates will have a passion for sustainability and the environment, will thrive in a fast‑paced entrepreneurial setting, will be self‑motivated, and will have an interest in cutting edge technology. Think big, think different, be ambitious, and consider joining a company that values honesty, creativity, excellence in building a world class operation, and proactively protecting the environment.

Typical Duties

• Function as a biological wastewater treatment expert
• Lead the system design, installation, and start up.
• Provide system data analysis.
• Create O&M manuals.
• Provide troubleshooting and maintenance of biological wastewater systems at customer sites.
• Preparation of general equipment specifications, PFD, mass balances, load list, component specifications, controls overviews, major equipment lists, equipment layouts, controls narratives and power consumption at different conditions with respect to guaranteed parameters.
• Support facility engineer and controls engineer for PID, system layout and electrical one-line.
• Create basis of design documents with information passed on from the applications/sales team.
• Preparation of preliminary and final Process designs for: o Coarse and fine screening of wastewater o Sump, lift and above grade pumping stations. o Tank aerations system including diffusers and blower systems. o Pretreatment including SAF/DAF and Lamella clarifiers. o Anaerobic digesters (EGSB) o MBR systems (flat sheet, hollow fiber) o Chemical dosing systems
• System instrumentation (pressure, flow, turbidity, conductivity/TDS, level, pH, TOC, DO, chlorine, ORP) o Sludge treatment (including filter/fan press, thickening, etc.) o Post treatment (UV, chlorination)
• The above designs include the selection of process and process calculations, membrane selection, filters selection, pump and blower selection, instrumentation selection, hydraulic calculations, pressure drop calculation, line sizing etc.

• Prepare RFQ documents with procurement, scopes of work, datasheets, etc. for valves, pumps, blowers, membranes, and other engineering items with proper selections required for anaerobic, BioViper, MBR and RO projects and bids.
• Support preparation of Control philosophy, O&M manual, commissioning book for the execution of the projects
• Interact closely with controls engineer to help in logic development for FAT and SAT
• Take part in the Commissioning activities of the project.
• Support product development activities and interface with stakeholders to report on progress.
• Support new customer site installations and troubleshooting of existing customer sites operations.
• Interface with Sales, Applications Engineering and Project Execution to support ongoing project efforts.
• Support procurement with sourcing and manufacturing efforts.
• Travel to sites to support projects and field activities.

Responsibilities

• Process design for each assigned project from preliminary to finalization to make sure all reactors and equipment are sized correctly and selected economically.
• Controls narrative for assigned project to make sure the process control is clearly described to controls engineer for programming.
• Wet testing during system commissioning to make sure all pre-conditions are met.
• Technical instruction for system inoculation and start up.
• Site performance for assigned customer sites to make sure no process issue affecting the system performance.
• Biological wastewater treatment system troubleshooting on any customer sites when needed.

Required Qualifications

• Bachelor’s degree in engineering
• 10+ years of process design & integration experience, preferably in the food and beverage or water and wastewater industry (both aerobic and anaerobic systems along with membrane treatment systems)
• Extensive experience in design, installation, start up, operation, troubleshoot and maintenance EGSB, UASB and/or other biological waswtewater treatment systems.
• Experience in analysis of wastewater treatment plants, water audit for industries and related issues.
• Ability to develop productive, long-term relationships and communicate with clients, peers, multi-discipline teams.
• Understanding of basic fabrication techniques
• Stellar written and verbal communication skills
• Professional Engineer (PE) license preferred.

Travel Required

• 10-30% to customer sites as needed

About Cambrian

Cambrian Innovation is a commercial provider of distributed water reuse, energy recovery and wastewater treatment solutions. Cambrian’s pioneering WEPA™ is a pay‑by‑the‑gallon contract for commercial and industrial customers globally, ensuring cost‑effective and sustainable wastewater treatment, water reuse, and clean energy generation. As we continue our track record of excellence with purpose, and we expand to serve new industries and new geographies, we are dedicated to helping our employees develop rewarding and creative careers.

What You Can Expect From Cambrian

• A supportive, highly collaborative, team‑oriented environment
• Opportunities to make a difference and be recognized.
• Growth and development with a leader in the industry
• Ability to work with bright, innovative, and forward‑thinking colleagues.
• Competitive compensation and benefits