Senior Level Wastewater Treatment Engineer Jobs
Senior level wastewater treatment engineer jobs place experienced engineers at the helm of complex infrastructure projects, setting technical direction, owning regulatory outcomes, and leading multidisciplinary teams through design and construction. Most openings are on-site or hybrid, concentrated in Consulting & Professional Services and Construction & Real Estate, with employers like GFT, Weston & Sampson, and Gresham Smith hiring at this level now.
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Weston & Sampson is currently seeking a Project Manager candidate with 10 or more years of experience in public utility / wastewater / water engineering, with a specialized emphasis on wastewater treatment studies, planning, design and construction administration, as well as experience managing multi-disciplinary projects. This position will be located in our Reading, MA office location.
- Will be responsible for developing and managing municipal, commercial, and industrial planning and design projects in the water resources environment.
- Pursue new work opportunities through established client relationships and market sector awareness.
- Supervise and lead project teams in the development of engineering reports, studies and designs, utilizing recognized industry standards and regulatory-compliant approaches.
- Supervise and lead project teams in the field evaluation and assessment of existing facilities, including treatment facilities, collection and transmission systems and pumping stations.
- The candidate will be expected to be flexible in terms of handling multiple assignments, work directly with clients to understand needs and to advance project planning and design assignments, as well as participating in company sponsored training programs, seminars, and conferences as may be necessary.
- Collaborate with other design and study teams to improve our ability to respond to client needs.
- Supervise, train, and mentor project managers, project engineers and junior engineering staff.
- Participate in professional organizations and technical committees.
What you'll bring:
- Bachelor’s degree in Civil or Environmental engineering, with preference for Masters’ degree.
- 10 or more years of related engineering experience, and registration as a Professional Engineer, or with the ability to obtain within six (6) months of hire.
- Particularly important are strong working relationships, or ability to develop them, with local clients.
- Demonstrated leadership experience and successful teamwork.
- Exemplary communication skills, including the verbal, written, and public presentation domains.
- Working proficiency in Microsoft Office.
- Adept at interpersonal relationship skills, conflict resolution, team leadership, and presentations.
- Possessing high ethical standards, committed to producing high quality deliverables, and a commitment to teamwork, respect, and integrity.
- Some travel is required, must have a valid driver’s license.
Salary Range: $95,400 - $122,110 based on experience
#LI-Hybrid
Overview:
At Weston & Sampson, you’ll work alongside more than 1,000 employee-owners who are passionate about improving our communities. From providing clean water to designing resilient infrastructure and sustainable environments, our work has a direct impact on quality of life. We’re looking for curious, driven professionals who want to contribute to innovative, impactful projects and grow with a team that supports them.
We are a 100% employee-owned, interdisciplinary firm offering design, engineering, and environmental services. Since our founding in 1899, we have worked to build a collaborative, forward-thinking environment grounded in respect for each other’s ideas.
We offer
- Meaningful work: Contribute to projects that protect and enhance the natural and built environments
- Ownership mindset: As an employee-owner, your work directly contributes to our shared success
- Growth opportunities: Build your career through mentorship, diverse projects, and clear advancement pathways
- Flexible workplace: Work in a way that supports your life and not the other way around
- Strong culture: Join a team that values collaboration, inclusion, and recognition
Our Commitment to Inclusion, Diversity, Equity & Access (IDEA)
We believe diverse perspectives make us stronger. Weston & Sampson is committed to fostering a culture of belonging where all employees feel valued, respected, and empowered. We actively support IDEA principles across our organization and in our daily work.
Ready to transform your environment? Let’s work together.
Explore opportunities and apply: https://www.westonandsampson.com/careers
A note to third-party recruiters
Weston & Sampson manages all recruiting directly. We do not accept unsolicited resumes without a signed agreement in place. Any unsolicited submissions will be considered property of Weston & Sampson, and we are not responsible for associated fees.
#midlevelprofessional #seniorlevelprofessional
Weston & Sampson is currently seeking a Project Manager candidate with 10 or more years of experience in public utility / wastewater / water engineering, with a specialized emphasis on wastewater treatment studies, planning, design and construction administration, as well as experience managing multi-disciplinary projects. This position will be located in our Reading, MA office location.
- Will be responsible for developing and managing municipal, commercial, and industrial planning and design projects in the water resources environment.
- Pursue new work opportunities through established client relationships and market sector awareness.
- Supervise and lead project teams in the development of engineering reports, studies and designs, utilizing recognized industry standards and regulatory-compliant approaches.
- Supervise and lead project teams in the field evaluation and assessment of existing facilities, including treatment facilities, collection and transmission systems and pumping stations.
- The candidate will be expected to be flexible in terms of handling multiple assignments, work directly with clients to understand needs and to advance project planning and design assignments, as well as participating in company sponsored training programs, seminars, and conferences as may be necessary.
- Collaborate with other design and study teams to improve our ability to respond to client needs.
- Supervise, train, and mentor project managers, project engineers and junior engineering staff.
- Participate in professional organizations and technical committees.
What you'll bring:
- Bachelor’s degree in Civil or Environmental engineering, with preference for Masters’ degree.
- 10 or more years of related engineering experience, and registration as a Professional Engineer, or with the ability to obtain within six (6) months of hire.
- Particularly important are strong working relationships, or ability to develop them, with local clients.
- Demonstrated leadership experience and successful teamwork.
- Exemplary communication skills, including the verbal, written, and public presentation domains.
- Working proficiency in Microsoft Office.
- Adept at interpersonal relationship skills, conflict resolution, team leadership, and presentations.
- Possessing high ethical standards, committed to producing high quality deliverables, and a commitment to teamwork, respect, and integrity.
- Some travel is required, must have a valid driver’s license.
Salary Range: $95,400 - $122,110 based on experience
#LI-Hybrid
Overview:
At Weston & Sampson, you’ll work alongside more than 1,000 employee-owners who are passionate about improving our communities. From providing clean water to designing resilient infrastructure and sustainable environments, our work has a direct impact on quality of life. We’re looking for curious, driven professionals who want to contribute to innovative, impactful projects and grow with a team that supports them.
We are a 100% employee-owned, interdisciplinary firm offering design, engineering, and environmental services. Since our founding in 1899, we have worked to build a collaborative, forward-thinking environment grounded in respect for each other’s ideas.
We offer
- Meaningful work: Contribute to projects that protect and enhance the natural and built environments
- Ownership mindset: As an employee-owner, your work directly contributes to our shared success
- Growth opportunities: Build your career through mentorship, diverse projects, and clear advancement pathways
- Flexible workplace: Work in a way that supports your life and not the other way around
- Strong culture: Join a team that values collaboration, inclusion, and recognition
Our Commitment to Inclusion, Diversity, Equity & Access (IDEA)
We believe diverse perspectives make us stronger. Weston & Sampson is committed to fostering a culture of belonging where all employees feel valued, respected, and empowered. We actively support IDEA principles across our organization and in our daily work.
Ready to transform your environment? Let’s work together.
Explore opportunities and apply: https://www.westonandsampson.com/careers
A note to third-party recruiters
Weston & Sampson manages all recruiting directly. We do not accept unsolicited resumes without a signed agreement in place. Any unsolicited submissions will be considered property of Weston & Sampson, and we are not responsible for associated fees.
#midlevelprofessional #seniorlevelprofessional
See All 15 Senior Level Wastewater Treatment Engineer Jobs
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Find JobsSenior Level Wastewater Treatment Engineer Job Market
Who's Hiring
- GFT4
- Weston & Sampson3
- Gresham Smith2
- Jacobs1
- Kleinfelder1
Top Industries Hiring
- Consulting & Professional Services8
- Construction & Real Estate3
Senior Level Wastewater Treatment Engineer Jobs: Frequently Asked Questions
How do I get a senior level wastewater treatment engineer job?
Employers hiring at this level look for a proven history of owning projects from preliminary design through commissioning, not just contributing to them. Deep knowledge of treatment processes, regulatory permitting, and hydraulic modeling matters, and so does experience leading engineers or technicians. Candidates who can show they have mentored junior staff, managed client relationships, and driven technical decisions independently stand out from the competition.
Which companies hire senior level wastewater treatment engineers?
Companies hiring senior level wastewater treatment engineers right now include GFT, Weston & Sampson, and Gresham Smith, based on current listings on Migrate Mate as of July 2026. Hiring at this level is concentrated among large environmental and civil engineering consultancies, municipal utilities, and infrastructure contractors who need experienced professionals to lead project delivery and guide technical staff.
Are there remote senior level wastewater treatment engineer jobs?
Yes, though most roles at this level involve on-site presence for project oversight and stakeholder coordination. About 56% of senior level wastewater treatment engineer openings are remote or hybrid as of July 2026, typically covering positions focused on design review, technical writing, or program management rather than hands-on plant operations or construction administration.
What makes a wastewater treatment engineer role senior level?
Senior level roles are defined by ownership and scope. Engineers at this stage lead projects or programs independently, make technical and regulatory decisions without close supervision, and are accountable for deliverable quality across the full project lifecycle. They also mentor junior and mid-level staff, coordinate across disciplines, and often serve as the primary technical contact with clients, agencies, or contractors.
Which industries hire the most senior level wastewater treatment engineers?
Senior Level wastewater treatment engineer roles concentrate in Consulting & Professional Services and Construction & Real Estate, based on current listings on Migrate Mate as of July 2026. These sectors drive hiring at this level because they manage aging infrastructure, face tightening discharge regulations, and require experienced engineers who can lead capital improvement programs and navigate complex permitting environments.