Stormwater Engineer - MS4

MACKAY; Atlanta (GA); On-site; USD 75,000 - 110,000; Full time

Job summary

MacKay (Lowe Engineers, now part of MacKay) is seeking a Stormwater Engineer to lead MS4 permit administration, compliance, and infrastructure planning. You will coordinate with municipal teams, manage inspections, and guide capital projects while ensuring water quality and flood risk reduction.

The role requires a civil/environmental background with MS4 experience, critical thinking, and strong communication. Hybrid/field components may apply on demanding projects.

Qualifications

• Bachelor's degree in civil, environmental, water resources, or a closely related engineering field.
• Progressively responsible experience in stormwater engineering, municipal drainage, water resources, environmental compliance, or a related field.
• Working knowledge of MS4 permit requirements, stormwater best management practices, erosion and sediment control, drainage design, and municipal operations.
• Ability to interpret engineering plans, specifications, regulations, permits, maps, field data, and technical reports.
• Proficiency with standard office and engineering software; GIS/asset-management modeling tools desirable.

Responsibilities

• Administer the municipality’s MS4 permit and maintain compliance with applicable federal, state, and local stormwater requirements.
• Develop, implement, and update the Stormwater Management Program, SOPs, ordinances, and policies.
• Prepare permit applications, annual reports, certifications, schedules, maps, and responses to agencies.
• Track permit commitments and enforcement actions; report on program performance.
• Coordinate activities supporting public education and outreach and illicit discharge elimination.

Skills

Technical judgment

Regulatory interpretation

Problem-solving

Project management

Written communication

Education

Bachelor’s degree in civil, environmental, water resources, or a closely related engineering field

Tools

GIS

Asset-management systems

Hydrologic/hydraulic modeling tools

Job description

At MacKay, we believe great people are the foundation of our growth and success.

We are in an exciting phase of expansion, creating new opportunities for our employees to take on meaningful work, collaborate across disciplines, and build long-term careers. Whether your role is technical or part of our support services team, you play an important role in delivering high-quality work and helping our projects succeed.

For nearly 70 years, Lowe Engineers has built a reputation for engineering excellence, trusted relationships, and exceptional client service throughout the Southeast. Now, as Lowe Engineers, A Part of MacKay, we're building on that legacy as part of a growing national infrastructure and environmental services firm. This partnership creates new opportunities for our employees to collaborate across disciplines, work on meaningful projects, and build long-term careers while continuing to serve clients with the quality and responsiveness Lowe is known for.

Position Summary:

The Stormwater Engineer leads the technical and regulatory activities required to operate and maintain the municipality’s Municipal Separate Storm Sewer System (MS4). This position administers the MS4 permit program, coordinates stormwater infrastructure planning and maintenance, manages inspections and investigations, works with the capital projects manager/engineer, and works across departments to protect water quality and reduce flood risk.

Key Responsibilities:

MS4 Program Administration and Compliance

• Administer the municipality’s MS4 permit and maintain compliance with applicable federal, state, and local stormwater requirements.
• Develop, implement, and update the Stormwater Management Program, standard operating procedures, ordinances, policies, and measurable goals.
• Prepare permit applications, annual reports, certifications, schedules, maps, records, and responses to regulatory agencies.
• Track permit commitments, inspection findings, corrective actions, enforcement matters, and program performance.
• Coordinate activities supporting public education and outreach, public involvement, illicit discharge detection and elimination, construction-site runoff control, post-construction stormwater management, and municipal pollution-prevention practices.

System Operations and Asset Management:

• Maintain an accurate inventory and map of stormwater assets, including outfalls, inlets, pipes, ditches, culverts, detention facilities, green infrastructure, and treatment practices.
• Develop risk-based inspection, cleaning, repair, and replacement priorities for the MS4.
• Coordinate field crews and contractors performing preventive maintenance, emergency response, sediment and debris removal, and structural repairs.
• Evaluate drainage complaints, localized flooding, erosion, stream impacts, and system capacity concerns; recommend practical corrective actions.
• Support budgeting, work planning, asset-management systems, level-of-service targets, and long-term capital improvement planning.

Inspections, Investigations, and Enforcement:

• Conduct or oversee inspections of outfalls, municipal facilities, construction sites, post-construction controls, industrial activities, and reported pollution incidents.
• Investigate suspected illicit discharges and improper connections using field observations, sampling, testing, records review, and source tracing.
• Document findings, issue notices or corrective‑action requirements within delegated authority, and coordinate escalated enforcement with appropriate departments.
• Maintain defensible inspection, sampling, maintenance, complaint, and enforcement records.

Engineering and Project Delivery:

• Perform or oversee hydrologic and hydraulic analyses, drainage studies, concept development, design review, cost estimating, permitting, bidding support, and construction administration.
• Review development and redevelopment plans for compliance with stormwater, floodplain, erosion‑control, and post‑construction requirements.
• Prepare scopes of work and manage consultants, contractors, schedules, budgets, deliverables, and quality control.
• Promote resilient and cost‑effective solutions, including green infrastructure and nature‑based practices where appropriate.

Coordination and Public Service:

• Collaborate with public works, engineering, planning, inspections, parks, emergency management, legal, finance, communications, and executive leadership.
• Respond professionally to residents, businesses, elected officials, developers, and partner agencies regarding stormwater concerns and program requirements.
• Deliver technical training for municipal employees and support public education and participation activities.
• Represent the municipality at regulatory meetings, project meetings, watershed partnerships, and public forums.

Required Qualifications:

• Bachelor’s degree in civil, environmental, water resources, or a closely related engineering field.
• Progressively responsible experience in stormwater engineering, municipal drainage, water resources, environmental compliance, or a related field.
• Working knowledge of MS4 permit requirements, stormwater best management practices, erosion and sediment control, drainage design, and municipal operations.
• Ability to interpret engineering plans, specifications, regulations, permits, maps, field data, and technical reports.
• Proficiency with standard office and engineering software; experience with GIS, asset‑management systems, and hydrologic or hydraulic modeling tools is desirable.
• Valid driver’s license and ability to travel to municipal facilities, construction sites, waterways, and stormwater assets.

Preferred Qualifications:

• Professional Engineer licensure, or eligibility for licensure, in the applicable state.
• Experience directly administering an MS4 permit or municipal stormwater program.
• Relevant certifications in erosion and sediment control, stormwater inspection, floodplain management, or green infrastructure.
• Experience with capital project delivery, consultant management, procurement, budgeting, and grant funding.
• Strong technical judgment, regulatory interpretation, problem‑solving, project management, and written communication skills.
• Ability to organize multiple priorities, meet permit deadlines, maintain complete records, and communicate complex requirements clearly.
• Ability to work independently and collaboratively with field personnel, technical professionals, regulators, contractors, and the public.
• Commitment to public service, environmental stewardship, safety, integrity, and continuous improvement.

Working Conditions and Physical Requirements:

The position combines office (85%) and field work (15%). Field duties may involve uneven terrain, active construction sites, confined or limited‑access areas, waterways, traffic, inclement weather, and exposure to typical municipal infrastructure hazards. The employee must be able to use required personal protective equipment, safely conduct inspections, and respond to urgent stormwater incidents outside normal business hours when assigned.

Why Join Lowe Engineers — A Part of MacKay?

The best of both organizations

Join a team with nearly 70 years of engineering excellence and trusted client relationships, backed by the resources, expertise, and opportunities of a growing national firm.

A people-first culture
At MacKay, we put people first. We are committed to creating an environment where employees can grow, contribute, and do their best work. We support well‑being, encourage balance, and create space for people to succeed both professionally and personally.

Meaningful work and real impact
Our teams take on complex infrastructure and environmental challenges that support critical systems and shape the places where people live and work. Every role contributes to delivering that work and making it successful.

Growth and opportunity
We are in an exciting phase of growth, expanding across geographies, services, and markets. That growth creates opportunities for our employees to take on new challenges, build their careers, and contribute in new ways as the company evolves.

A strong and trusted foundation
Built on more than 50 years of experience, MacKay has developed a reputation for quality work, strong relationships, and dependable results. You’ll be part of a team with a solid foundation and a clear direction for the future.

Opportunities to share in success
We provide opportunities for employees to participate in ownership and build long‑term financial value as the company grows.

Our Values

At MacKay, our values guide how we work, collaborate, and support one another.

• Honesty. We build trust through transparency, integrity, and accountability.
• Dedication. We are committed to the success of our team members, clients, and communities.
• Relationships. We foster lasting connections that strengthen our work and the teams around us.

Who We Are

Lowe Engineers is now part of MacKay, an infrastructure and environmental services firm with more than 50 years of experience serving clients across the United States.

We are in an exciting phase of growth, expanding our reach, strengthening our capabilities, and bringing together talented teams across the country. That growth is creating new opportunities for our employees to take on meaningful work, collaborate across disciplines, and build long‑term careers.

Every role at MacKay contributes to the success of our projects and the clients we serve. Whether your work is technical or operational, you are part of a team that delivers quality, builds relationships, and moves projects forward.

We’re looking for dedicated, talented individuals who deliver excellence, thrive in collaborative environments, and value both meaningful work and work‑life balance. If this sounds like you, we’d like to hear from you.

Voluntary Self‑Identification

For government reporting purposes, we ask candidates to respond to the below self‑identification survey.Completion of the form is entirely voluntary. Whatever your decision, it will not be considered in the hiringprocess or thereafter. Any information that you do provide will be recorded and maintained in aconfidential file.

As set forth in MacKay’s Equal Employment Opportunity policy,we do not discriminate on the basis of any protected group status under any applicable law.

Why are you being asked to complete this form?

We are a federal contractor or subcontractor. The law requires us to provide equal employment opportunity to qualified people with disabilities. We have a goal of having at least 7% of our workers as people with disabilities. The law says we must measure our progress towards this goal. To do this, we must ask applicants and employees if they have a disability or have ever had one. People can become disabled, so we need to ask this question at least every five years.

Completing this form is voluntary, and we hope that you will choose to do so. Your answer is confidential. No one who makes hiring decisions will see it. Your decision to complete the form and your answer will not harm you in any way. If you want to