Senior Water & Wastewater Engineer — Industrial Systems Leader

SLR Consulting; Bothell (WA); On-site; USD 115,000 - 140,000; Full time

Benefits offered by this job

Medical, dental, vision

PTO and holidays (10+)

401(k) with company match

Life insurance

Job summary

SLR Consulting (US) is seeking a mid- to senior-level Water & Wastewater Engineer to join our team in the United States. You will contribute to projects across North America, guiding treatment design from concept through startup and optimization.

You’ll mentor junior staff and progressively assume project leadership while collaborating with operators, regulators, contractors, and multidisciplinary engineers.

Qualifications

• Bachelor of Science in Environmental, Chemical, or Civil Engineering.
• 6+ years of experience in industrial wastewater treatment engineering.
• Professional Engineer (PE) licensure.
• Experience working with regulatory agencies, clients, and contractors.
• Strong written and verbal communication and analytical skills.

Responsibilities

• Evaluate industrial, mining, municipal, and commercial wastewater treatment challenges and develop practical, cost‑effective treatment solutions.
• Perform process evaluations, feasibility studies, bench‑scale testing, and pilot studies to assess treatment technologies and optimize system performance.
• Develop engineering designs for treatment systems, including process flow diagrams, hydraulic calculations, equipment selection, piping layouts, and technical specifications.
• Assess and troubleshoot existing treatment systems, identify operational improvements, and support facilities in resolving treatment and compliance issues.
• Participate in field investigations, site assessments, construction observation, startup, commissioning, and performance optimization of treatment facilities.
• Work directly with treatment plant operators and facility personnel to understand operational challenges and translate those needs into engineering solutions.
• Support water quality evaluations, discharge permitting projects, mixing zone analyses, and regulatory compliance assessments.
• Interpret and apply federal, state, provincial, and local regulatory requirements to client projects.
• Review operating data and treatment performance information to evaluate compliance, identify trends, and recommend process improvements.
• Coordinate with CAD designers and multidisciplinary engineering teams to develop plans, drawings, and construction documents.
• Lead technical tasks and provide guidance and mentoring to junior engineering staff.
• Develop and maintain long‑term client relationships by serving as a trusted technical advisor on water and wastewater issues.

Skills

Industrial wastewater engineering

Mentoring

Regulatory knowledge

Team collaboration

Education

Bachelor of Science in Environmental/Chemical/Civil Engineering

Professional Engineer (PE) licensure

Tools

AutoCAD

Microsoft Office

Job description

SLR Consulting (US) is seeking a mid- to senior-level Water & Wastewater Engineer to join our team in the United States. You will contribute to projects across North America, guiding treatment design from concept through startup and optimization.

You’ll mentor junior staff and progressively assume project leadership while collaborating with operators, regulators, contractors, and multidisciplinary engineers.