Senior Water and Wastewater Engineer

Company Overview

Modern Engineering Solutions (MES) is a dynamic civil engineering firm specializing in water and wastewater treatment systems. With operations across Texas state, we are dedicated to delivering innovative solutions for municipal, state, and local government projects. Our collaborative team thrives on tackling complex challenges, offering expertise in water and wastewater treatment, conveyance systems, pump stations, and storage facilities. Joining MES means being part of a team that values creativity, technical excellence, and meaningful contributions to community development across the Lone Star State.

Job Description

We're looking for a Senior Engineer (PE) with deep expertise in water and wastewater treatment to lead and execute projects from conceptual design through completion. This role involves working closely with project teams to develop world-class designs and solutions, adapting project plans based on budget constraints, client needs, and design factors.

Responsibilities

• Lead the design and execution of water and/or wastewater treatment and infrastructure projects
• Become a subject matter expert in regional treatment plant operations and design.
• Manage daily technical work, project planning, scope, schedules, and budgets.
• Develop project objectives and performance goals, maintaining client and stakeholder communication.
• Support business development through technical sales, proposal preparations, and presentations.
• Expand career growth opportunities within a fast-growing regional and national water practice.
• Plan, organize, and communicate technical project needs to department management and mentor staff.
• Provide design-build support for water and wastewater projects in collaboration with Modern Engineering Solutions engineering team.
• Additional duties as required

Qualifications

Required:

• Bachelor's degree in Civil or Master of Science, Environmental Engineering
• PE license in Texas (or ability to obtain within 6 months)
• Minimum 5 years of experience in water and/or wastewater engineering, with strong preference for municipal facilities design
• Strong background in water or wastewater processes — filtration, hydraulics, chemical feed systems, biological treatment, BNR, or solids processing
• Demonstrated ability to manage multiple projects with thorough knowledge of engineering techniques and procedures
• Familiarity with TCEQ regulations and Texas permitting processes
• Proficient with process simulation software (e.g., Hysys, Aspen, HTRI), Microsoft Office Suite, and relevant engineering design codes (ASME, ANSI, API, PIP, NACE).
• Excellent communication, problem-solving, and team leadership skills
• Willingness to travel for site visits within Texas (approx. 10–15%)
• Texas-based candidates only

Preferred:

• Master's degree in Civil or Environmental Engineering
• Experience with process simulation or hydraulic modeling software
• Background in both treatment facility design and conveyance/distribution systems
• Track record of mentoring engineers toward PE licensure

Reports to: CEO / Principal Engineer

Expected Salary: $175,000 – $200,000 annually, based on experience and qualifications. Total compensation includes a base salary and eligibility for our discretionary year-end incentive bonus program.

Benefits

• Full medical, dental, and vision coverage
• Generous PTO policy
• 100% remote with flexible scheduling
• Support for conferences, training, and certifications

Why Join MES?

• Real ownership, no bureaucracy - You work directly with the CEO and senior PEs. No layers, no politics, just good engineering.
• Modern tools that actually save time - We use AI to eliminate administrative grunt work so you can focus on what matters: solving real problems for clients.
• Remote-first, flexibility-first - 100% remote with flexible scheduling that respects your life outside of work.
• Shape the firm's direction - As a senior team member, you'll have real input on how we deliver projects, develop junior engineers, and grow the practice.
• Work that makes an impact - From small rural utilities to large municipal systems, the projects you deliver directly shape how communities grow.
• A team that keeps improving - "That's how we've always done it" isn't acceptable here. We're constantly refining our processes, adopting better tools, and getting better as a team.

How to Apply

Submit the following:

• Resume highlighting your water/wastewater engineering experience
• Brief cover letter outlining your qualifications and what draws you to this role
• 3-minute video walking through your approach to leading a complex water or wastewater project from design through permitting