Our People
How do wastewater leaders deliver reliable services as infrastructure ages?
Meet Aleksey Reznik. From engineer to project manager, Aleksey delivers reliable, resilient wastewater solutions for Delaware’s largest wastewater treatment facility
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Wastewater treatment is more than a technical discipline — it’s a public service essential to community health, environmental protection and long-term resilience. Without it, communities risk public health emergencies like the spread of disease, contaminated drinking water and sewage backup into homes. Jacobs’ Operations and Maintenance (O&M) Consultant Aleksey Reznik works to be sure those risks don’t become a reality.
With more than 40 years of experience in wastewater treatment and environmental engineering, Aleksey’s career is defined by technical excellence and a deep commitment to the communities he serves. Today, he supports the O&M of the 134-million-gallon-per-day (MGD) wastewater treatment plant in Wilmington, Delaware — one of the region’s most critical wastewater facilities supporting both the City of Wilmington and a large portion of New Castle County — equipping operators with the training, tools and support they need to deliver reliable service to the community.
Get to know Aleksey
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40 +
years of experience in wastewater treatment
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134 -MGD
wastewater facility under his support
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50 +
countries visited around the world
A global journey shaped by engineering and purpose
Aleksey’s path into the water sector began in Kiev, Ukraine, where he launched his career as an environmental engineer at the city’s municipal wastewater treatment plant. He learned the fundamentals of sludge digestion, pumping systems and facility operations.
His next chapter designing water purification and wastewater treatment systems, selecting equipment and overseeing installation and startup activities deepened his understanding of how treatment facilities are built, optimized and sustained.
Leading Wilmington’s O&M program
When Aleksey immigrated to the United States, he became a licensed plant operator at the Wilmington wastewater treatment facility. Working in various roles, he immersed himself in every aspect of plant operations, from activated sludge systems to digesters and disinfection processes.
Now leading the full O&M program for the Jacobs-operated facility, Aleksey is driving improvements that strengthen operational performance and team capability. His leadership helped the facility reduce chemical use by up to 30%, generating significant cost savings for the city. To achieve this, Aleksey championed the adoption of Intelligent O&M as a key modernization strategy. Over two years, he used the platform to monitor hypochlorite disinfection dosage — one of the plant’s largest cost drivers — enhancing efficiency and sustainability.
The success of this approach has since become a model for other Jacobs O&M projects, demonstrating the value of targeted technological investments in delivering measurable savings and more reliable operations.
Lasting industry influence
Aleksey’s impact has earned industry recognition, including the Delaware House of Representatives’ Operator of the Year Award. Within Jacobs, he is equally respected for his hands-on mentoring, working alongside engineering staff to develop emerging talent and share knowledge gained over decades in the field.
He holds Class IV and Class A wastewater operator licenses in Delaware, Pennsylvania and Wisconsin, and is an active member of the Water and Wastewater Operators Association for Maryland, Delaware and the District of Columbia. Aleksey also holds a bachelor’s degree in environmental engineering from the Civil Engineering Institute in Kiev.
“Our work as wastewater treatment operators is invisible when everything goes right and that is exactly the point. Every day, our work protects public health, safeguards the environment and keeps our communities running. That responsibility drives me and isn’t one I take lightly.”
Aleksey Reznik
