Project Environmental Engineer
Posted 8 Oct 2026
BranchFactor Summary
The original posting with the fluff stripped out
- Expected experience
- 6–10 yrs
- Management level
- People management
- Contract
- Full-time
No salary listed for this role.
CertificationsBachelor’s Degree, Professional Engineer
Field of studyChemical Engineering, Civil Engineering, Environmental Engineering (or related)
Field of studyEnvironmental Studies
Study levelMaster's
Langan provides expert land development engineering and environmental consulting services for major developers, renewable energy producers, energy companies, corporations, healthcare systems, colleges/universities, and large infrastructure programs throughout the U.S. and around the world. Our employees collaborate seamlessly among 50+ offices and gain valuable hands-on experience that fosters career growth. Langan culture is entrepreneurial from advancing innovative technical solutions, to participating in robust training and knowledge sharing, to making progressive change within the communities we live and work.
Consistently ranked among the top ten “Best Firms to Work For” and Engineering News-Record’s top 50 firms worldwide, Langan attracts and retains the best talent in the industry. Employees thrive at Langan, a firm that fosters an inclusive and supportive work environment for all; prioritizes wellbeing, health, and safety; encourages volunteerism and philanthropy; offers workplace flexibility, along with carbon-neutral office spaces; and empowers individuals to contribute their skills and knowledge to make impactful contributions.
Job Summary
Langan is seeking a Project Environmental Engineer to join its collaborative team in Arlington, VA or Washington, DC. This individual will serve a key function in providing engineering and technical analysis for complex environmental projects, as well as managing/supervising field investigations, system installations, and other environmental projects. Project areas include, but are not limited to, industrial water/wastewater sampling and treatment; soil and groundwater sampling; oversight of laboratory and pilot studies; remediation investigation, design, implementation, and monitoring; and report/ proposal preparation. Experience with per- and polyfluorinated alkyl substances (PFAS) or chlorinated solvents is required. In this role, you will have the opportunity to manage diverse projects, solve problems, and overcome challenges in returning blighted properties to re-use, while protecting the environment.
Job Responsibilities
- Develop and implement complex remediation and treatment approaches, including feasibility studies, cost estimates, oversight of lab testing, pilot testing, and full-scale application;
- Perform complex analyses for specific portions of broader engineering and environmental projects;
- Supervise field activities and ensure correct interpretation of findings;
- Ensure that data collection and laboratory analyses are completed correctly, within budget, and on time;
- Manage and deliver on multiple projects and tasks within specific budgets, schedules, and deadlines;
- Effectively organize, write, and edit reports, draft proposals, and other documents;