Senior Water/Wastewater Engineer

The Senior Water/Wastewater Engineer is a technical and client-focused leader responsible for growing and sustaining municipal and industrial relationships throughout Wisconsin and neighboring states. This individual serves as a senior technical resource for planning, design, and delivery of water and wastewater infrastructure projects while providing quality control reviews and mentoring within their area of technical expertise. The role blends business development, project leadership, and technical excellence to support long-term strategic growth.

Key Responsibilities

Client Development & Market Growth

• Establish, maintain, and grow trusted client relationships with public agencies, utilities, and industrial stakeholders.
• Identify new market opportunities, support proposal development, and participate in client presentations and negotiations.
• Collaborate with leadership to develop regional growth strategies and expand service offerings.

Technical Leadership & Project Delivery

• Serve as a senior technical resource for planning, design, and implementation of water and wastewater systems, including treatment facilities, pumping systems, conveyance, and related infrastructure.
• Provide technical oversight and direction across all phases of project delivery, from planning and preliminary engineering through final design and construction support.
• Support project managers in scope development, budgeting, scheduling, and risk management.

Quality Control & Mentorship

• Perform quality control (QC) and peer reviews for deliverables within area of technical specialization to ensure compliance with regulatory standards, industry best practices, and firm quality requirements.
• Maintain high technical standards for design calculations, reports, drawings, and specifications.
• Mentor and guide junior and mid-level engineers, providing technical coaching and professional development.
• Support continuous improvement of internal technical processes, standards, and design tools.

Qualifications

• Bachelor’s degree in Civil, Environmental, or related Engineering discipline (Master’s degree preferred).
• Professional Engineer (PE) license required.
• 12+ years of experience in water and wastewater engineering, with demonstrated senior-level responsibility.
• Proven experience working with municipal and/or industrial clients on complex infrastructure projects.
• Demonstrated success in client development, relationship management, and market growth .
• Strong technical background in planning and design of water and wastewater systems.
• Experience performing and overseeing quality control reviews.
• Excellent communication skills with the ability to interact effectively with clients, regulators, and project teams.

Preferred Attributes

• Established regional client relationships and market knowledge within Wisconsin.
• Experience leading multi-disciplinary teams and complex project portfolios.
• Strong business acumen and strategic mindset.
• Passion for mentoring and developing technical staff.

McMahon Benefits

• Outstanding combination of salary and merit bonus – industry leading.
• Year-end merit bonus to encourage your entrepreneurial spirit for all employees, not just leadership.
• Career Development plans including active mentorship, professional registration, continuing education and tuition reimbursement.
• Paid vacation, bereavement time, maternity leave, family emergency, military duty.
• Company profit sharing into your 401k (Up to 15% of total compensation, salary + merit bonus). Additional employee contributions and rollover contributions are welcomed.
• Industry leading health insurance.
• Dental expense reimbursement program. Orthodontics coverage after 2 years of employment subject to plan limits.
• Long-Term Disability
• Pharmaceutical coverage
• Employee Assistance Program for Mental Health, Addiction Recovery, Legal, Financial and Identity Theft services.
• Life Insurance for employee, Dependent Life Insurance for your spouse and your children.
• Chiropractic coverage for 20 visits per year plus additional medically necessary visits.
• HealthJoy subscription for personal healthcare concierge services.
• Corporate discount for membership at local YMCA or partial membership reimbursement at your favorite gym.
• Partial entry reimbursements for employee run, walk, or bike events.
• Up to 8 hours PTO for volunteering in community.

McMahon Associates is an Equal Opportunity Employer