Senior Environmental Remediation Engineer

Leidos LLC; United States; Hybrid; USD 116,000 - 210,000; Full time

Job summary

Leidos seeks a Senior Remediation Engineer to lead a portfolio of federal environmental projects, guiding CERCLA and RCRA investigations, RI/FS, RD/RA, and long-term monitoring while ensuring regulatory compliance. The role interfaces with Leidos leadership, PMs, senior staff, clients, and agencies, with opportunities for remote work within the United States or onsite in Reston, VA or Twinsburg, OH.

The candidate will mentor junior engineers, develop technical deliverables and cost estimates,

Qualifications

• Bachelor's degree in Civil, Environmental, Chemical Engineering or related engineering discipline; 12+ years environmental experience or a Master's with 10+ years.
• PE license required.
• Knowledge of state and federal environmental regulations (CERCLA and RCRA).
• Experience evaluating, designing, or implementing remedial technologies and systems.

Responsibilities

• Define project requirements and lead multidisciplinary project teams.
• Direct and support development of PMPs, QAPPs, HASPs, RI/FS reports and cost estimates, PP, RODs, and RD/RAWPs.
• Develop exit strategies for complex technical/regulatory challenges.
• Support proposal development with technical solutions and cost bases of estimate.
• Mentor and develop junior engineering staff in remediation system design and operation.
• Ensure compliance with environmental, quality, and health and safety requirements.
• Prepare and present technical findings to clients, agencies, stakeholders, and the public.
• Travel to project locations for meetings and site visits.

Skills

Technical leadership

Regulatory knowledge

Communication skills

Mentoring

Travel willingness

Education

Bachelor's degree in Civil/Environmental/Chemical Engineering

Professional Engineer (PE) license

Tools

MS Office Suite

Job description

Leidos is seeking a Senior Remediation Engineer to serve as a technical lead for a diverse portfolio of federal environmental remediation projects. The role will support CERCLA and RCRA investigations, feasibility studies/corrective measures studies, decision documents, remedial design/remedial action (RD/RA), long-term monitoring and operations, and environmental compliance activities. The successful candidate will provide technical leadership and develop solutions to complex environmental remediation and regulatory challenges. This role regularly interfaces with Leidos leadership, program and project managers, and senior technical staff across multiple offices, as well as clients and external stakeholders, including regulatory agencies and the public. This position may be performed remotely within the United States, subject to Leidos remote-work eligibility requirements, or based onsite in Reston, VA, or Twinsburg, OH.

Primary Responsibilities:

• Define project requirements and technical objectives and lead multidisciplinary project teams.
• Direct and support development of project work plans and technical deliverables, including Project Management Plans (PMPs), Quality Assurance Project Plans (QAPPs), Accident Prevention Plans (APPs), Health and Safety Plans (HASPs), Remedial Investigation/Feasibility Study (RI/FS) reports and cost estimates, Proposed Plans (PPs), Records of Decision (RODs), remedial design packages (30%, 60%, 90%, and 100% submittals), Remedial Design/Remedial Action Work Plans (RD/RAWPs), and related technical documents.
• Develop exit strategies and solutions for complex technical and regulatory challenges.
• Support proposal development, including technical solutions, management approaches, risk mitigation strategies, and bases of estimate.
• Mentor and develop junior engineering staff in the design, implementation, operation, and maintenance of remediation systems.
• Ensure compliance with Leidos and client environmental, quality, and health and safety requirements.
• Prepare and present technical findings and recommendations to clients, regulatory agencies, stakeholders, and the public.
• Travel to project locations as needed for client and stakeholder meetings, site visits, and other project activities.

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.

Required Education and Experience:

• Bachelor's degree in Civil, Environmental, Chemical Engineering, or related engineering discipline and at least 12 years relevant environmental experience, or a Master's degree and at least 10 years.
• Professional Engineer (PE) license.
• Knowledge of state and federal environmental regulations, including CERCLA and RCRA.
• Experience evaluating, designing, or implementing remedial technologies, including in-situ soil and groundwater treatment, groundwater extraction and treatment, thermal treatment, soil vapor extraction, air sparging, dual-phase extraction, permeable reactive barriers, excavation, capping, stabilization, dredging/sediment remediation, and monitored natural attenuation.
• Experience addressing contaminants including PFAS, VOCs, SVOCs, explosives, metals, PCBs, and pesticides/herbicides.
• Experience engaging with local, state, and federal stakeholders and regulatory agencies.
• Experience developing or supporting technical, management, and cost/price proposals.
• Experience authoring peer-reviewed technical publications and white papers and presenting at technical conferences.
• Strong written and verbal communication skills.
• Ability to work independently with minimal supervision.
• Proficiency with Microsoft Office applications, including Word, Excel, Outlook, PowerPoint, and Project.
• Valid driver's license.
• Must be able to pass a Public Trust background investigation; due to contract requirements, U.S. Citizenship or U.S. Permanent residency is required.

Pay Range

Pay Range: Pay Range $116,350.00 - $210,325.00 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.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here.

Securing Your Data

Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to [e-mail].

Commitment and Diversity

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026.

For more information, visit www.Leidos.com.