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Design Engineer - Environmental, Water, Wastewater
Oklahoma City, OKMarch 31st, 2026
Penn E&R is a full-service environmental, engineering and construction company with over 27 years of experience providing reliable, cost-effective solutions to public- and private-sector clients. Penn E&R is headquartered in Doylestown, Pennsylvania with several branch offices in the mid-Atlantic region.At Penn E&R, we empower professionals to create lasting, positive impact through environmental remediation, civil engineering design, and regulatory guidance that protect ecosystems, restore land, and improve infrastructure. Whether you're cleaning up a former industrial site or designing a stormwater management system for a new development, your work here contributes to a safer, more sustainable world.Bring your creativity, resourcefulness, and drive to Penn E&R, where every day is an opportunity to learn, grow, and lead. Ready to take on what’s next? Let’s make it happen together!We are seeking an Environmental/Water/Wastewater Design Engineer to play a leading role on Penn E&R's engineering team. While this role is based in our Doylestown, PA office, we offer a flexible hybrid schedule (or possibly fully remote).You will serve a key function in designing water/wastewater treatment and environmental remediation projects (an understanding of industrial processes such as manufacturing, food production, petrochemical manufacturing, etc., would be very desirable). You will interface with multidisciplinary teams (both internal and external) to solve complex client issues and will be a liaison among the design, regulatory compliance, and construction teams to provide a seamless client experience.Responsibilities include:Design of water and wastewater process components including piping, pumps, equalization/flow control and measurement including water/groundwater treatment systems for the removal of solids, metals, VOCs, and other parameters, per client operation and regulatory requirements.Selection and design of physical and biological treatment processes, which may include chemical precipitation, ion exchange, clarification, filtration, GAC and biological technologies.Development of system process flow diagrams (PFDs), water balance, and Process/Instrumentation Diagrams (P&ID).Assist in preparing plans and specifications for treatment systems and related collection, conveyance, and monitoring systems.Develop standard operating procedures (SOPs) and operation and maintenance (O&M) plans.Provide direction to internal and external technology design teams to facilitate system upgrades, troubleshooting, bench-scale and pilot studies, and other related engineering tasks.Provide support to other engineering disciplines (geotechnical, civil, plumbing, electrical) as needed.Provide direct oversight and management of junior and mid-level staff for specific project assignments, and overall training and mentoring of staff on the team.Lead and/or assist in the preparation of proposals including development of scope and costs.Manage project financials as project or task manager.Interact with and build relationships with clients, contractors/subcontractors, and internal practice leaders.Demonstrate a strong commitment to customer service and responsiveness to client needs.Manage and deliver multiple projects and tasks within specific budgets, schedules, and deadlines.Prepare technical documents including reports, permit applications, and other written deliverables.Travel to client sites as needed to support project and client needs.Perform other duties as requested.QualificationsBachelor's degree in Civil/Environmental, Mechanical or Chemical Engineering.7+ years of experience working in the environmental engineering field, with a minimum of 5 years focused on water, wastewater or remediation process design.Highly proficient in AutoCAD; working ability in Civil 3D, HydroCAD and other design software a plus.Professional Engineer (PE) license or on track to obtain within 2 years.40-hour OSHA HAZWOPER certification.Ability to effectively manage multiple clients and projects.Willingness and ability to identify new client opportunities and manage client relationships is strongly desired.Excellent written and verbal communication skills.Strong attention to detail with excellent analytical, multitasking, and judgment capabilities, including constructability in design products.Ability to effectively work independently and in a team environment.We know that great work happens when people feel supported both on and off the job. That’s why we offer balance and benefits that support you.Competitive compensation and performance-based bonusesComprehensive health, dental, vision, and retirement benefitsPaid time off and flexible scheduling where possibleA strong commitment to field and office safetyA stable, growing company with local roots and regional impactPenn E&R, Inc. is an Equal Employment Opportunity employer. We adhere to a policy of making employment decisions without regards to race, color, religion, sex, age, disability or any other protected categories. It is our intention that all qualified applicants be given an equal opportunity and that selection decisions be based on job-related factors.
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