Senior Staff Scientist or Engineer

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. Employees collaborate seamlessly among 50+ offices, gaining valuable hands‑on experience that fosters career growth and innovation.

Langan is seeking a Senior Staff Scientist, Geologist, or Engineer to join its collaborative team in Princeton, NJ
. This individual will serve a key function in providing integrated engineering support for land development projects. Responsibilities include initial site assessments, conducting field tests (civil, environmental, geotechnical, and/or natural resources), monitoring construction sites, compiling data and preparing reports, and participating in client meetings. The role offers opportunities to work on diverse projects, solve problems across Langan’s disciplines, and overcome challenges in restoring the environment and returning blighted properties to productive reuse while protecting and enhancing the environment.

The position encourages learning, growth, creativity, flexibility, and collaboration in a team environment.

• Assist with the planning and execution of field investigations by performing field tests, collecting samples, recording data, and performing routine calculations.
• Monitor complex construction projects by taking various tests to evaluate contractor compliance with job specifications.
• Collect soil, soil vapor, indoor and ambient air, sediment, surface water, and groundwater samples.
• Assist with acquisition of and compliance with regulatory agency permits to support site investigation and remediation.
• Review and interpret environmental, geological, and historical records to support environmental due diligence.
• Prepare a variety of standard logs and field forms (such as drilling logs, field investigation dailies, and chain‑of‑custody logs).
• Identify and implement solutions to both routine and more complex field problems, documenting them accurately and keeping the project manager informed of resolved issues.
• Lead tasks associated with the preparation and modification of various engineering documents including reports, specifications, plans, cost estimates, and designs for projects.
• Collaborate with interdisciplinary teams to prepare integrated solutions for clients.
• Perform and manage tasks within specific budgets and schedules, and track task and project budgets as needed.
• Interact in a professional manner with client and subcontractor representatives in close collaboration with the supervisor.
• Supervise or coordinate the work of staff engineers, interns, and others as needed.
• Perform other duties as requested.

• Bachelor’s degree in Environmental Science, Environmental Engineering, Geology, or equivalent job experience.
• 4+ years of related experience in due diligence, contaminated site investigation, construction oversight, and collaboration with professionals in engineering feasibility studies, remedial system design, and implementation.
• For engineers: possession of a valid Professional licensure or ability to obtain within one year.
• Experience conducting Phase I, II, and III environmental site assessments, including drilling observation, sampling, well installation, and construction/remediation oversight.
• Experience providing litigation support services for expert witness projects or similar.
• In‑depth knowledge of state and federal environmental regulations (including CERCLA and RCRA).
• Experience working with state regulatory agencies.
• Excellent written and verbal communication skills.
• Strong attention to detail with excellent analytical, multitasking, and judgment capabilities.
• Ability to work independently and as part of a team.
• Availability to work overtime as needed.
• Reliable transportation for client meetings and job site visits; valid driver’s license in good standing.

Langan offers a comprehensive compensation package including company‑paid medical, dental, and vision coverage; life insurance; short‑ and long‑term disability insurance; 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. Additional perks include employee resource groups, flexible work schedules, extensive training, wellness programs, and mentoring.

Estimated salary range: $72,000 – $104,000
. Actual compensation may vary based on experience, location, and other factors.

Langan is committed to providing equal employment opportunities to all qualified applicants and employees, including individuals with disabilities and protected veterans. An inclusive workplace is essential to the well‑being and success of our employees.