Staff Environmental Engineer

We are SLR Consulting (US), a 500+ coast-to-coast team of advisory, environmental/engineering, and regulatory professionals. We deliver environmental and sustainability services to our clients through the integration of over 30 advisory, technical environmental, and engineering disciplines to help clients address some of their most complex challenges around sustainability. We are Making Sustainability Happen. As an Environmental Engineer , you will play an important role on a team whose work is essential to achieving this goal. SLR is seeking an Environmental Engineer to join our growing Portland, Oregon office. This position offers the opportunity to work on a diverse range of industrial wastewater treatment, water quality, permitting, and remediation projects across North America. You will work alongside experienced engineers and scientists to evaluate treatment technologies, support engineering design, conduct field investigations, participate in system startup and troubleshooting, and help clients solve complex environmental challenges. This role is ideal for an engineer who enjoys combining field work, data analysis, and engineering design while developing practical experience across multiple environmental disciplines. This position offers the opportunity to work directly with experienced specialists in industrial wastewater treatment, mine water management, environmental permitting, process engineering, and remediation. Successful candidates will receive hands-on mentorship while gaining experience in field investigations, treatment system design, regulatory compliance, and client-facing engineering projects. Responsibilities: Work with internal and external clients across a variety of industries on water quality, wastewater treatment, permitting, and remediation projects throughout North America. Support surface water discharge permitting projects, including mixing zone studies, water quality evaluations, and regulatory compliance assessments. Analyze wastewater treatment system performance, evaluate monitoring data, support compliance assessments, and contribute to technical reports and engineering recommendations. Review federal, state, provincial, and local regulations and permits for applicability to client operations and projects. Assist with the design of wastewater treatment, stormwater treatment, and soil and groundwater remediation systems. Support development of engineering drawings and specifications through design calculations, CAD markups, drawing review, and coordination with multidisciplinary project teams. Evaluate and compare treatment technologies for wastewater, stormwater, soil, and groundwater applications, including bench-scale and pilot-scale testing. Conduct field investigations including wastewater, stormwater, groundwater, and soil sampling, treatment system inspections, and operational assessments. Participate in construction observation, startup, commissioning, troubleshooting, and performance…