Project Environmental Engineer
- Salary
- $96,750 - $140,000
- Level
- Senior
Not stated in the posting: work type, visa.
Open. First seen 8 October 2026.
About the role
Langan Engineering & Environmental Services's standard text
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;
- Participate in the identification and pursuit of new clients and new work for existing clients. Attend business development meetings with new and existing clients;
- Provide direct oversight and management of entry-level staff for specific project assignments. Coach, train, and motivate existing staff. Participate in interviewing and hiring staff;
- Coordinate internal work groups within the same or different office locations and/or within the same or different disciplines on an as-needed basis;
- Interface effectively and professionally with clients, contractors, subcontractors, staff, project personnel, supervisors, and others. Actively participate in internal and external technical presentations and produce written articles for internal and external publications; and
- Perform other duties as requested.
Qualifications
- Bachelor's degree in Civil Engineering, Environmental Engineering, Chemical Engineering or related engineering field; Master’s degree with environmental emphasis preferred;
- PE licensure;
- 6-10 years of work-related experience;
- Experience with or education on Per- and Polyfluoroalkyl Substances (PFAS) and/or chlorinated solvents required;
- Understanding of federal and state environmental regulations;
- Strong attention to detail with excellent analytical, multitasking, and judgment capabilities;
- Strong technical writing skills;
- Strong public speaking and verbal communication skills or potential to develop these skills;
- Ability to effectively work independently and in a team environment; and
- Possess reliable transportation for client meetings and job site visits and a valid driver’s license in good standing.
Langan provides a rich array of programs and benefits to help its employees advance their careers and enhance the quality of their lives. Our comprehensive compensation package includes: full-time employment company paid medical, dental, and vision coverage; life insurance, short- and long-term disability insurance, and paid pregnancy disability leave; 401(k)/Roth with company match; paid time off including parental and military leave; employee referral and professional license bonuses; and educational reimbursement.
Langan Engineering & Environmental Services's standard text
Langan offers employee resource groups; flexible work schedules; extensive training; wellness programs; buddy and mentoring programs; and much more!
Langan is committed to providing equal employment opportunities to all qualified applicants and employees, including individuals with disabilities and protected veterans. We believe that an inclusive workplace is essential for the well-being and success of our employees.
Certain US jurisdictions require Langan to include an estimate of salary or hourly ranges. Actual compensation may vary based on factors such as related work experience, location, market conditions, education/training, certifications and other credentials, as well as applicable knowledge and skills. Certain roles may be eligible for overtime and participation in the firm's annual bonus and performance review program.
Langan Engineering & Environmental Services's standard text
Bonuses are discretionary and based on individual job performance and the profitability of the firm. Employees are also eligible to receive up to 20 days of paid vacation time, 10 days of paid sick time and 10 paid holidays throughout the year. Eligibility and actual paid time off may vary based on local law and factors such as hours worked, related work experience and level.
Pay Range
Langan Engineering & Environmental Services's standard text
$96,750—$140,000 USD
Please review our Applicant Privacy Notice at Collection to understand how we collect, use, and retain your personal information: https://www.langan.com/langan-notice-at-collection
What this role asks for
65% of this description is written for the role. The rest is Langan Engineering & Environmental Services's standard text, folded away below.
Read against Langan Engineering & Environmental Services's other open postings on this site.
The team: Environmental HIRES STEADILY
This role is one of 66 open in Environmental. 10 were posted in the last 30 days and the oldest in June: a team that hires all year rather than one being built.
WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS
Excel (4 of 66), Git (4 of 66)
OTHER ROLES ON THIS TEAM
- Entry-Level Environmental Permitting & Compliance Engineer or Scientist posted Oct 16
- Senior Staff Environmental Engineer, Scientist or Geologist posted Oct 15
- Senior Staff Environmental Engineer, Scientist, or Geologist posted Oct 12
- Entry-Level Environmental Engineer, Scientist or Geologist posted Oct 6
- Senior Project Engineer/Manager – Mission Critical Water and Wastewater posted Oct 6
- Project Environmental Engineer, Scientist, Geologist / Project Manager posted Oct 2
- Staff Engineer/Scientist – Environmental Permitting & Compliance posted Oct 1
- Entry-Level Environmental Engineer or Geologist posted Sep 30
- Entry-Level Environmental Engineer or Geologist posted Sep 28
- Environmental Engineer, Scientist, or Geologist - Entry Level posted Sep 18
- Intern/Co-op - Environmental Engineer (Summer 2027) posted Sep 16
- Intern/Co-op - Environmental Engineering (Summer 2027) posted Sep 16
- Entry-Level Environmental Engineer, Scientist or Geologist posted Sep 15
- Entry-Level Environmental Engineer or Geologist posted Sep 15
- Entry-Level Environmental Engineer or Geologist posted Sep 15
- Entry-Level Environmental Engineer, Scientist or Geologist posted Sep 10
- Senior Staff Engineer posted Sep 3
- Staff Environmental Engineer, Scientist, or Geologist posted Sep 3
- Senior Staff Engineer, Scientist, or Geologist posted Sep 3
- Senior Project Environmental Engineer, Scientist, or Geologist posted Sep 3
- Senior Environmental Project Manager – Power Generation & Transmission posted Aug 21
- Senior Environmental Project Manager – Power Generation & Transmission posted Aug 20
- Senior Staff Environmental Engineer, Scientist or Geologist posted Aug 6
- Staff Environmental Engineer, Scientist, or Geologist posted Jul 23
- Senior Environmental Project Manager – Power Generation & Transmission posted Jul 23
- Environmental Permitting and Compliance Engineer or Scientist posted Jul 23
- Senior Project Manager- Environmental posted Jul 16
- Senior Staff Environmental Engineer, Scientist, or Geologist posted Jul 13
- Project Environmental Engineer, Scientist, Geologist / Project Manager posted Jul 9
- Senior Project Manager - Environmental Planning posted Jul 6
- Project Manager - Environmental posted Jul 2
- Entry-Level Environmental Engineer, Scientist or Geologist posted Jul 2
- Entry-Level Environmental Engineer posted Jul 2
- Project Environmental Permitting & Compliance Engineer or Scientist / Project Manager posted Jul 1
- Senior Staff Environmental Engineer, Scientist, Geologist, or Hydrogeologist posted Jul 1
- Senior Project Manager - Environmental posted Jul 1
- Senior Project Manager - Environmental posted Jul 1
- Senior Project Manager - Environmental posted Jul 1
- Senior Project Manager - Environmental posted Jul 1
- Senior Project Manager - Environmental posted Jul 1
- Project Environmental Permitting & Compliance Engineer or Scientist / Project Manager posted Jul 1
- Project Environmental Permitting & Compliance Engineer or Scientist / Project Manager posted Jul 1
- Environmental Project Manager posted Jul 1
- Project Engineer/Manager - Environmental Permitting & Compliance posted Jul 1
- Project Environmental Permitting & Compliance Engineer or Scientist / Project Manager posted Jul 1
- Project Environmental Permitting & Compliance Engineer or Scientist / Project Manager posted Jul 1
- Project Environmental Permitting & Compliance Engineer or Scientist / Project Manager posted Jul 1
- Project Scientist/Engineer – Air Quality posted Jul 1
- Industrial Health & Safety Project Manager posted Jul 1
- Senior Project Manager - Environmental posted Jul 1
- Senior Staff Environmental Engineer, Scientist or Geologist - Environmental posted Jul 1
- Senior Staff Environmental Engineer, Scientist or Geologist posted Jul 1
- Senior Project Manager - Environmental posted Jul 1
- Senior Project Manager - Environmental posted Jul 1
- Project Environmental Scientist, Geologist, Engineer or Hydrogeologist posted Jul 1
- Project Environmental Engineer, Scientist, Geologist / Project Manager posted Jul 1
- Project Environmental Engineer, Scientist, Geologist / Project Manager posted Jul 1
- Project Environmental Engineer, Scientist, Geologist / Project Manager posted Jul 1
- Project Environmental Engineer / Project Manager posted Jul 1
- Project Environmental Engineer posted Jul 1
- Senior Environmental Engineer posted Jul 1
- Entry-Level Environmental Engineer, Scientist, or Geologist posted Jul 1
- Practice Leader - Civil Engineering posted Jul 1
- Senior Project Manager - Environmental posted Jun 22
- Project Environmental Engineer, Scientist, Geologist / Project Manager posted Jun 22
From the team and dates on Langan Engineering & Environmental Services's own job board.
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