Environmental Scientist, CERCLA Specialist

Leidos; United States; Remote; USD 73,000 - 133,000; Full time

Job summary

Leidos is seeking an Environmental Scientist – CERCLA Investigation & Remediation to support government environmental projects, focusing on technical analysis, reporting, and CERCLA-related work. Remote position with travel up to 10%.

The role involves developing Conceptual Site Models, evaluating remedial options, and preparing SAPs, RI/FS, QA plans, and other deliverables while coordinating with multidisciplinary teams to deliver technically defensible conclusions.

Qualifications

• 6+ years of relevant experience or a master's degree with 4+ years.
• Experience supporting CERCLA PA/SI, RI/FS, or similar projects.
• Knowledge of site characterization, remediation technologies, data requirements, and regs.
• Strong technical writing ability for reports and deliverables.
• Ability to work independently and with multidisciplinary teams.

Responsibilities

• Prepare SAPs, UFP-QAPPs, HASPs, RI/FS reports and other deliverables.
• Analyze environmental data to support site characterization and decision-making.
• Develop Conceptual Site Models and data visualizations.
• Support evaluation of remedial alternatives and site exit strategies.
• Compile and report data per QA requirements and client specs.
• Coordinate with scientists, engineers, geologists, and project managers.

Skills

Technical writing

Analytical skills

Team collaboration

MS Office

Education

Bachelor's degree in Geology, Environmental Engineering, Earth Science, Environmental Science, or related field

Tools

Microsoft Word

Excel

PowerPoint

Outlook

Project

Job description

Leidos is seeking an Environmental Scientist – CERCLA Investigation & Remediation to support our growing portfolio of environmental investigation, restoration, remediation, and compliance projects for government clients.

This is a remote position with up to 10% domestic travel.

The Environmental Scientist will work with senior technical staff and multidisciplinary project teams to support environmental investigation and remediation projects, primarily under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). The position will focus on technical analysis, technical writing, and preparation of environmental reports and project deliverables.

The successful candidate will have strong technical writing and analytical skills, experience with CERCLA investigation and remediation projects, and the ability to translate complex environmental data into clear, technically defensible conclusions and recommendations.

Primary Responsibilities

• Prepare environmental technical documents, including Sampling and Analysis Plans (SAPs), Waste Management Plans, Uniform Federal Policy for Quality Assurance Project Plans (UFP-QAPPs), Health and Safety Plans (HASPs), subcontractor statements of work, Remedial Investigation/Feasibility Study (RI/FS) reports, and other project deliverables.
• Analyze and interpret chemical, geologic, geotechnical, engineering, and other environmental data to support site characterization, remedial decision-making, and project reporting.
• Develop Conceptual Site Models (CSMs) and technical data presentations, including maps, cross-sections, tables, figures, and other visualizations.
• Support the development, evaluation, and selection of remedial alternatives and site exit strategies.
• Compile, evaluate, and report environmental data in accordance with project quality assurance requirements and applicable federal, state, and client requirements.
• Develop data-driven conclusions and recommendations and help maintain consistency and technical quality across environmental project deliverables.
• Coordinate with environmental scientists, engineers, geologists, project managers, subcontractors, and other technical professionals.
• Perform work in accordance with approved project plans, procedures, and Leidos and client environmental, quality, health, and safety requirements.

Required Qualifications

• Bachelor's degree in Geology, Environmental Engineering, Earth Science, Environmental Science, or a related field with 6+ years of relevant experience, or a master's degree with 4+ years of relevant experience.
• Experience supporting CERCLA Preliminary Assessments/Site Inspections (PA/SI), Remedial Investigations/Feasibility Studies (RI/FS), or equivalent RCRA investigation and remediation projects.
• Knowledge of environmental site characterization, remediation technologies, data requirements, and applicable federal and state environmental regulations.
• Experience interpreting complex environmental data, developing Conceptual Site Models (CSMs), and developing technically supported conclusions and recommendations.
• Strong technical writing experience preparing environmental reports, plans, and other technical deliverables.
• Strong organizational, written, and verbal communication skills with the ability to work independently and collaboratively within multidisciplinary teams.
• Proficiency with Microsoft Office applications, including Word, Excel, PowerPoint, Outlook, and Project.
• Valid driver's license and ability to travel domestically up to 10% of the time.

Preferred Qualifications

• Field experience supporting environmental site characterization, investigation, or remediation activities.
• Professional certification or progress toward certification in a relevant discipline, such as PG, GIT, EIT, CPSS, or a related credential.
• Current or previous 40-hour HAZWOPER certification in accordance with OSHA 29 CFR 1910.120.
• Experience supporting federal environmental investigation, remediation, or restoration programs.

Must be able to pass a Public Trust background investigation. U.S. Citizenship or U.S. Permanent Resident status is required.

**Please be advised that during the interview, you will be required to keep your camera on, and your interviewer will be taking your picture for identification purposes if an offer letter is extended to you.**

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

October 6, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:

Pay Range $73,450.00 - $132,775.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.