Project Water​/Wastewater Engineer; PTAN

Apply for the Project Water/Wastewater Engineer (PTAN) role at Arcadis
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Arcadis is the world's leading company delivering sustainable design, engineering, and consultancy solutions for natural and built assets.

We are more than 36,000 people, in over 70 countries, dedicated to improving quality of life. Everyone has an important role to play. With the power of many curious minds, together we can solve the world’s most complex challenges and deliver more impact together.

The position is Part‑Time As Needed (PTAN) based in Arlington, Virginia or Hanover, Maryland. The Project Water/Wastewater Engineer will provide technical expertise and leadership to our engineering team, leading tasks and projects while applying technical knowledge to develop the team’s overall capabilities. Projects include water/wastewater engineering, investigations, studies, analysis, designs, and construction administration services.

• Evaluate, plan, design, permit, and support management of water/wastewater and conveyance projects (pipelines, treatment, and pumping facilities).
• Support professional engineering services during construction: construction observation, review of shop drawings, RFI responses, permit closeouts.
• Oversee development of design calculations, technical report sections, design drawings, and specifications.
• Prepare reports, presentations, and audio‑visual materials; actively participate in client meetings to foster effective communication.
• Ensure project compliance with Arcadis practices, maintain quality, H&S standards; facilitate coordination for timely completion within budget.
• Work independently and collaboratively; mentor junior staff and support their professional development.
• Travel for site visits, client meetings, safety audits, and construction oversight as required.

Required

• 8+ years of relevant experience.
• Bachelor’s degree in Civil, Environmental, Mechanical or related field.
• Professional Engineering (PE) License.

Preferred

• 10+ years of relevant water/wastewater experience.
• Master of Science/Engineering in Civil, Environmental, Mechanical, Chemical Engineering or related field.
• Experience in design or consulting engineering or municipal work environment.
• Project task leadership experience: managing overall project delivery, prioritizing tasks, mentoring.
• Active participation in regional and/or national professional association(s).

Part‑time, as needed positions include EAP, 401K, and optional wellbeing benefits. Hourly range for this position is $43‑$61/hour. Actual compensation will vary based on experience, education, budget, and location.

We are an equal opportunity and affirmative action employer. Women, minorities, people with disabilities and veterans are strongly encouraged to apply. We are dedicated to a policy of non‑discrimination in employment on any basis including race, creed, color, religion, national origin, sex, age, disability, marital status, sexual orientation, gender identity, citizenship status, veteran status, or any other basis prohibited by law.