Principal Engineer

Principal Engineer – Fairfax, VA

Principal Engineer for our Fairfax, VA office.

Key Responsibilities

• Deliver public‑sector water and wastewater facilities planning and design projects.
• Support projects as part of the design team, design lead, task manager, and/or project manager.
• Prepare facility assessment and design reports.
• Perform design calculations, process and/or hydraulic modeling, select and size equipment, prepare design documents and construction documents, and support construction‑phase services both in office and on site.
• Perform field work and site visits from planning through construction, with occasional travel; mentor junior engineers while collaborating with senior mentors, local, and regional office leadership.

Required Qualifications

• Bachelor of Science degree in Civil, Environmental, Chemical, or Mechanical Engineering.
• Strong verbal and written communication skills.
• PE license in Virginia or ability to obtain one via comity.
• Minimum of 1 year of documented design experience for water/wastewater facilities following PE licensure.
• Experience working on and collaborating with multidisciplinary teams.
• Experience supervising, coordinating, and reviewing work by junior and technical staff.
• Ability to estimate workload and develop schedules.
• Proficiency with standard software platforms (e.g., Microsoft Office Suite).
• Strong organizational skills.

Preferred Qualifications

• Master of Science degree in Civil Engineering, Environmental Engineering, or Construction Management.
• Experience serving as Project Manager for water/wastewater facility projects.
• Experience supporting proposal preparation and participating in interviews.
• Experience communicating and coordinating with clients.
• Experience mentoring junior and technical staff.
• Experience delivering water and/or wastewater facility projects from preliminary design through construction.
• Familiarity with CADD, GIS, Revit, and/or other relevant software.

What We Offer

• Comprehensive health benefits (medical, dental, vision, and prescription plans).
• Pre‑tax flexible spending plans for medical, dependent care, and transportation.
• Short‑ and long‑term disability; employer‑paid life insurance.
• Paid holidays, floating holidays, and paid time off (PTO).
• Employer‑contributed 401(k) plan and additional financial planning support.
• Professional growth opportunities, including tuition reimbursement, in‑house training, and incentives for professional registration and membership in professional organizations.
• Starting pay range dependent on skills, experience, education, and geographic location.