Water/Wastewater Design Engineer

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. We are seeking a dedicated and relationship-driven Water/Wastewater Design Engineer to join our team. We are open to reviewing candidates based remotely and are able to support our clients. Proximity to a MacKay Branch office location is preferred. This engineer will be required to travel for about 20% of their time. Key Responsibilities: Technical advisor for water treatment and process design Perform analyses, prepare drawings, and write specifications Responsible for preparing work product Prepare scope and budgets for proposals Minimum Qualifications: B.S. in Chemical, Mechanical or Civil Engineering with an emphasis on the design of water/wastewater treatment systems Colorado P.E. license is required; P.E. in other southwestern states is a plus 5-10 years of experience in process design, construction and operations in municipal and industrial water treatment Preferred Qualifications: M.S. in Chemical, Mechanical or Civil Engineering 40-hour HAZWOPER certification 40–hour MSHA certification Experience with treatment plant operations Technical Skills and abilities: Engineering design, including process, mechanical, piping, and pumping systems Operational and oversight experience Construction management/oversight Cost estimating Preparation of procurement and construction specifications Scheduling and subcontractor management Interpersonal skills: Nimble learner and adapts well to change Emotional intelligence Maintains confidentiality Active listening skills Why Join MacKay? 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 MacKay is an infrastructure and environmental services firm built on more than 50 years of experience and a growing collective of expertise. 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 lon