Process Engineer – Aeration & Emissions; -FLOAT

Overview

Carollo Engineers is an internationally recognized environmental engineering firm specializing in the planning, design, and construction of water and wastewater facilities. Carollo’s Water Applied Research Center (Water ARC®) provides nationwide, process-based research and applied engineering expertise for municipal and private-sector clients across drinking water, wastewater, reuse, and infrastructure applications. Water ARC® services span laboratory and field-based testing, pilot and demonstration studies, and the development of innovative tools that bridge research and consulting practice.

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Carollo is seeking a staff- to mid-level Process Engineer whose role will be split between leading Water ARC® initiatives—primarily the I-FLOAT® off-gas testing program and supporting wastewater process engineering consulting projects across the firm. Approximately 50–60% of this position will be dedicated to applied research activities, with a strong emphasis on leading and growing the I-FLOAT® program and field-based testing. The remaining 40–50% of the role will support a variety of wastewater process engineering and consulting efforts, depending on business needs and the individual’s expertise.

I-FLOAT®, developed within Water ARC®, is Carollo’s internally developed off-gas testing solution designed to lower the logistical and cost barriers associated with off-gas testing, enabling broader deployment across WRRFs. Through I-FLOAT®, Carollo is expanding the industry’s ability to quantify real-world oxygen transfer performance and emissions (e.g., N₂O, CO₂), improve aeration design and operation, and support emerging needs related to quantify greenhouse gas emissions factors.

More information can be found here:

At Carollo, you will work alongside a collaborative and technically driven team that is passionate about advancing the state of practice in wastewater treatment. This role offers a unique opportunity to combine hands‑on field testing, data interpretation, team leadership, and client engagement while helping shape a growing national program.

• Serve as a technical lead for Carollo’s I-FLOAT® off-gas testing program within Water ARC®, supporting aeration performance and emissions characterization studies nationwide.
• Lead multiple off-gas testing studies, varying in scale, complexity, and duration.
• Coordinate with utility staff, internal project managers, and engineering teams.
• Perform and oversee QA/QC of off-gas data collection, including sensor validation, calibration review, data screening, and documentation.
• Analyze and interpret process emissions data, translating results into engineering-relevant metrics such as oxygen transfer efficiency, aeration performance, and greenhouse gas emissions.
• Develop, refine, and standardize off-gas testing protocols, workflows, and best practices.
• Contribute to applied research efforts, including internal R&D, conference abstracts, technical papers, and industry presentations.
• Support Carollo’s broader emissions and aeration initiatives by helping advance methodologies related to greenhouse gas monitoring and performance‑based aeration evaluation.

• Support wastewater process engineering consulting projects across Carollo, including studies related to nutrient removal, capacity assessments, and master planning.
• Support process modeling and simulation efforts using tools such as Bio Win, SUMO, GPS‑X, or similar platforms to support planning, preliminary design, and optimization efforts.
• Prepare technical memoranda and reports documenting study findings, assumptions, modeling results, and engineering recommendations.
• Apply field data, performance testing results, and applied research outcomes to inform process evaluations and design decisions.
• Support applied research projects under the Carollo Research Group, as needed, beyond I‑FLOAT‑specific initiatives.
• Collaborate with multidisciplinary project teams to support project delivery and client needs across the company.

• Master’s degree…