February 27, 2026For 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. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.
Senior Contracts Director for HII Mission Technologies Corp’s (HII MTC’s) All Domain Operations (ADO) Business Group: Directs and manages a large 10+ person team responsible for the administration of contracts and timely, complete and effective preparation of proposals in response to RFPs or other opportunities to bring new business or expand existing business. 10 years relevant progressive experience with Bachelors in related field; 8 years relevant progressive experience with Masters in related field; or High School Diploma or equivalent and 14 years relevant progressive experience.
Arlington, VA30+ days ago
HII's Mission Technologies is seeking a Senior RF Spectrum Policy Engineer to provide direct support to our Government customer, the Department of the Navy Chief Information Office in the area of national and international spectrum regulations, national and international policy, and registration and coordination. ExperienceRF Engineer 2 - 2 years relevant experience with Bachelors in related field; 0 years experience with Masters in related field; or High School Diploma or equivalent and 6 years relevant experience.
15 years relevant experience with Bachelors in related field; 13 years relevant experience with Masters in related field; 10 years relevant experience with PhD or Juris Doctorate in related field; or High School Diploma or equivalent and 19 years relevant experience. Our workforce includes skilled tradespeople; artificial intelligence, machine learning (AI/ML) experts; engineers; technologists; scientists; logistics experts; and business administration professionals.
HII - Mission Technologies is currently seeking Senior-level IaC Engineer to work out of Fairfax, VA in support of the DoD/DoW Advana War Data Platformdesigned to aggregate operational, intelligence, logistics, and sensor data from multiple domains, enable Joint All-Domain Command and Control (JADC2) by providing a common data fabric, and support AI/ML applications for predictive analytics, targeting, and mission planning. • Designs and implements automated cloud architectures using Terraform, Ansible, and CloudFormation to support system administration, release management, cybersecurity controls, and continuous integration pipelines across multiple operational enclaves.
Arlington, VA30+ days ago
Collaborates with stakeholders to define enterprise data strategies, optimize pipelines (ETL/ELT), and incorporate technologies such as cloud platforms (e.g., AWS GovCloud, Azure Government), Big Data tools (e.g., Spark, Hadoop), and relational/NoSQL databases for secure, performant solutions. Applies big-picture thinking to map and align business processes with data requirements, ensuring holistic solutions that address collection from multiple sources, authoritative source identification, data formalization, and linkage through common, scalable architectures.
Alexandria, VA30+ days ago
Our workforce includes skilled tradespeople; artificial intelligence, machine learning (AI/ML) experts; engineers; technologists; scientists; logistics experts; and business administration professionals. Our capabilities range from C5ISR, AI and Big Data, cyber operations and synthetic training environments to fleet sustainment, environmental remediation and the largest family of unmanned underwater vehicles in every class.
Alexandria, VA30+ days ago
5 years relevant experience with Bachelors in related field; 3 years relevant experience with Masters in related field; 0 years experience with PhD or Juris Doctorate in related field; or High School Diploma or equivalent and 9 years relevant experience. Our workforce includes skilled tradespeople; artificial intelligence, machine learning (AI/ML) experts; engineers; technologists; scientists; logistics experts; and business administration professionals.
This high-impact position focuses on enhancing a centralized data environment (CDE) that delivers auditable financial transaction data, improves transparency and accountability across DoW, and builds a robust common operating picture for senior leadership decision-making. Designs, models, documents, and governs the logical and conceptual data architectures, relationships, and schema evolutions for complex, enterprise-scale applications in support of tracking and accountability reforms.
Founded in 1986, HETI is a full-service, nationwide environmental services company specializing in environmental and indoor air quality site assessment, site remediation, risk characterization, occupational health and safety services, and litigation/expert witness support. The candidate should have experience managing consulting assignments, must work effectively in multi-disciplinary teams, is expected to be proficient in the analysis and communication of information, and must be able to work cooperatively with agencies, organizations, and individuals to guide decision-making.
9 years of relevant experience with bachelor's in related field; 7 years of relevant experience with master's in related field; 4 years of relevant experience with PhD or Juris Doctorate in related field; or High School Diploma or equivalent and 13 years of relevant experience . As a Supply Chain Risk Management Intelligence Analyst, you will play a vital role in supporting our Centers for Medicare and Medicaid and Health and Human Services (HHS) Supply Chain Risk Management efforts.
We manage permitting and environmental review processes (environmental impact statements [EISs] and environmental assessments [EAs]) that include consultation with regulatory agencies; public involvement; collection of baseline data, preparation of special studies, analysis of environmental, cultural, socioeconomic, and other impacts; and specification of measures to mitigate adverse impacts. Pay Range - There are multiple factors that are considered in determining final pay for a position, including, but not limited to, relevant work experience, skills, certifications and competencies that align to the specified role, geographic location, education and certifications as well as contract provisions regarding labor categories that are specific to the position.
Reston, Virginia30+ days ago
We manage permitting and environmental review processes (environmental impact statements [EISs] and environmental assessments [EAs]) that include consultation with regulatory agencies; public involvement; collection of baseline data, preparation of special studies, analysis of environmental, cultural, socioeconomic, and other impacts; and specification of measures to mitigate adverse impacts. Pay Range - There are multiple factors that are considered in determining final pay for a position, including, but not limited to, relevant work experience, skills, certifications and competencies that align to the specified role, geographic location, education and certifications as well as contract provisions regarding labor categories that are specific to the position.
Alexandria, VA30+ days ago
This individual will lead DLA‑SM’s analytical efforts to develop government‑wide priorities for critical material risk mitigation while also modernizing a Fortran‑based econometric model currently maintained on a mainframe at IDA (Institute for Denfense Analyses.) 5 years relevant experience with Bachelors in related field; 3 years relevant experience with Masters in realted field; 0 years experience with PhD or Juris Doctorate in related field; or High School Diploma or equivalent and 9 years relevant experience.
HII - Mission Technologies is currently seeking a Junior BI Developer/Analyst to work out of Fairfax, VA in support of the DoD/DoW Advana War Data Platform designed to aggregate operational, intelligence, logistics, and sensor data from multiple domains, enable Joint All-Domain Command and Control (JADC2) by providing a common data fabric, and support AI/ML applications for predictive analytics, targeting, and mission planning. • Develops business intelligence components supporting War Data Platform (WDP) Core Integration data operations by preparing structured datasets, building baseline dashboards, and conducting routine analytic validation across Unclassified and NIPR, Secret and SIPR, and Top Secret and JWICS enclaves.
Prince William County, VA5 days ago
p>Ability to walk, stand, stoop, kneel, crouch, crawl, use hands to handle, or feel objects, tools, or controls, reach with hands and arms, climb or balance; and occasionally lift/push/pull up to 25 pounds. Prince William County Division of Risk & Wellness Services is seeking an experienced Senior Environmental Health & Safety Manager to lead and oversee environmental compliance, safety programming, and employee wellness initiatives.
Germantown, MD26 days ago
We invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world. Knowledge of FERC requirements and related experience with preparing FERC Section 7(c) resource reports and pre-filing process, environmental permitting, NEPA, relevant environmental regulations and processes, and related environmental considerations desired.
Washington, District of Columbia30+ days ago
p style="font-size:12pt;line-height:116%;margin:0pt 0pt 8pt">What Required Skills You'll Bring: - Bachelor’s Degree in Environmental Science, Environmental Engineering, or a related discipline.
- Proven experience in:
- NEPA Compliance Strategy.
Rockville, MD30+ days ago
p>Powered by record sales, extraordinary client retention, strategic acquisitions, and an entrepreneurial spirit, Apex Companies is one of the fastest growing engineering and environmental consulting firms in the US. If you have a disability or special need that requires accommodation to navigate our website or complete the application process, please contact Talent@apexcos.com or (301) 417-0200.
Alexandria, VA30+ days ago
em> Knowledge of the local regulations or skill sets related to the specific work on project Ensure compliance with environmental regulations and new legislation Technical writing and communication skills Able to lead a team or project effort. Raises awareness of emerging environmental issues across the organization and engages in environmental education and research.
Arlington, VA30+ days ago
We invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world. AECOM is actively growing the East Region Environmental Planning & Permitting (EPP) practice and is seeking an Environmental Project Manager for its Nuclear and Radiological Services Group within the southeastern EPP Department.
This role requires regular engagement throughout the development lifecycle with multiple AWS stakeholders including Real Estate, Legal, Risk, Water, Design, Public Policy, Construction, and Operational teams, as well as external stakeholders including regulatory agencies, consultants, and contractors. A successful candidate in this role will have a proven track record of delivering multiple, high-priority projects with tight timelines that require strong communication with partner teams, outside consultants and counsel, and regulatory agencies.
Cooperate in construction of strong cross-functional teams (cooperate with any suggested project assignments outside of original assigned practice area) to achieve success in shared goals, understanding that multiple perspectives and talents build stronger teams and results. This is a client-facing, leadership-track role for someone with strong technical industrial hygiene experience who can manage projects, support clients, and contribute as a key technical resource across a variety of engagements.
Chantilly, Virginia5 days ago
For additional information about ECS, visit: www.ecslimited.com.. - The following US Military ranks will qualify for this position IF they also meet the education and licenses requirements from the above section titled "Required Qualifications":
This individual will be responsible fordriving business development for Phase 1 and 2 ESAs, PCAs, and subsurface investigation services, coordinate and oversee field inspections, reporting, and conduct technical inspections as needed, interview and recommend new hires and independent contractors and learn and use Salesforce for proposals, follow up with clients, and collaborate with team members for Red Tape Due Diligence services. Visit Us:https://www.dfmdevelopment.com/ .
Sterling, Virginia30+ days ago
Our capabilities include cyber space operations, cyber defense and resiliency, vulnerability research, ubiquitous technical surveillance, data intelligence, lifecycle mission enablement, and software modernization. Nightwing provides technically advanced full-spectrum cyber, data operations, systems integration and intelligence mission support services to meet our customers’ most demanding challenges.
ECS is currently ranked #60 in Engineering News-Record's Top 500 Design Firms (April 2026), #148 in Engineering News-Record's Top 200 Environmental Firms (October 2025) and #50 in Zweig Group's Hot Firm List (May 2025). Bachelor and/or Master of Science in Civil Engineering, Environmental Engineering, or other Engineering degree applicable to Environmental Consulting, Natural or Environmental Science, Geology, or other degree relevant to the practice of Environmental Consulting.
Basic Qualifications: 8 Years of experience with a Bachelor of Science degree in Environmental Science, Chemical Engineering, Civil Engineering, or a closely related technical discipline is required or 6 Years of experience with a Master degree in Environmental Science, Chemical Engineering, Civil Engineering, or closely related technical discipline. The ideal candidate is a subject matter expert who can lead complex, multi-site initiatives, interpret evolving regulations to develop forward-looking strategies, and collaborate effectively with site-level teams, corporate leadership, and external agencies to uphold our commitment to environmental stewardship and operational excellence.
Alternatively, we are also open to consider candidates working from home anywhere in the continental United States This individual will report to a manager who works in New York City and is focused on adjudicating first and third party commercial environmental claims (mostly complex storage tank claims) and contributing to providing superb results for our clients. Boston metro area, California outside of Los Angeles & San Francisco metro area, Connecticut, Chicago metro area, Denver metro area, New Jersey (outside of New York City metro area), New York State (outside of New York City metro area), Washington, D. C.
Individual pay within the range is determined by several factors including location, education or training, relevant work history, sales incentive structure and job-related skills. We are seeking a Senior EHS Officer to lead safety initiatives, ensure regulatory compliance, and support continuous improvement across our facilities and project sites.
Our clinical services include advanced imaging, cancer services, cardiovascular care, emergency care, lab services, orthopedics, weight loss services and more, all powered through Sentara eCare, a comprehensive electronic medical record system. In addition to our hospital, Sentara Health is enhancing access to healthcare services in Northern Virginia with outpatient and imaging centers in Lake Ridge, Lorton, Springfield and Alexandria, Va.
p style="text-align:left">Pay Range - There are multiple factors that are considered in determining final pay for a position, including, but not limited to, relevant work experience, skills, certifications and competencies that align to the specified role, geographic location, education and certifications as well as contract provisions regarding labor categories that are specific to the position. We combine unmatched expertise with cutting-edge technology to help clients solve their most complex challenges, navigate change, and shape the future.We can only solve the world's toughest challenges by building a workplace that allows everyone to thrive.
Pay Range - There are multiple factors that are considered in determining final pay for a position, including, but not limited to, relevant work experience, skills, certifications and competencies that align to the specified role, geographic location, education and certifications as well as contract provisions regarding labor categories that are specific to the position. Job Description: ICF seeks an Environmental Engineer to provide technical support for our EPA projects with the Office of Superfund and Emergency Management (OSEM), Office of Brownfields and Land Revitalization (OBLR), and Office of Resource Conservation and Recovery (ORCR).
Woodbridge, Virginia11 days ago
Our clinical services include advanced imaging, cancer services, cardiovascular care, emergency care, lab services, orthopedics, weight loss services and more, all powered through Sentara eCare®, a comprehensive electronic medical record system. In addition to our hospital, Sentara Health is enhancing access to healthcare services in Northern Virginia with outpatient and imaging centers in Lake Ridge, Lorton, Springfield and Alexandria, Va.
Some key responsibilities will include: Leading and overseeing various projects including Phase I Environmental Site Assessments, Phase II Subsurface Investigations, site characterization and remediation activities, hazardous materials surveys, and construction/ redevelopment oversight. Hillis-Carnes Engineering Associates is a top-tier, multi-disciplined, employee-owned engineering firm with a demonstrated history of success for the past 30 years (and counting!)
Washington, District of Columbia30+ days ago
li>Conducting rigorous environmental analyses and policy reviews for large-scale, regional or national land management projects, including writing, editing, and integrating findings into planning documents and decision packets. Serving as a subject-matter advisor to higher management and project teams on policy interpretation, Forest Service planning requirements, and NEPA documentation, facilitating cross-agency and stakeholder coordination.
At Atlas,?were?providing services that enable communities to flourish and thrive, and if youre an Environmental Compliance Specialist ready to advise clients on environmental regulations and drive compliance across air, stormwater, and multi-media programs and committed to doing meaningful work, then this is your moment. Youll perform compliance audits, develop plans such as SPCCs and SWPPPs, manage projects, calculate emissions, support permitting, and partner with clients to implement practical, compliant solutions that support safe and sustainable operations.
p>Some key responsibilities will include:
Chevy Chase, Maryland30+ days ago
Blue Energy is a platform technology that makes use of the latest NRC-approved reactors and is in negotiations with existing nuclear and industrial sites, enabling a much faster regulatory pathway to deploy our first unit. Excellent communication (both verbal and written) and project management skills, with a proven track record of working effectively with engineering, legal, and regulatory teams.
p>The successful candidate will have a strong track record of air quality engineering solutions and air permitting in North America, the demonstrated ability to deliver multiple high priority projects simultaneously, the ability to drive alignment across teams with competing priorities, and be a strong advocate for air quality compliance and sustainability. Work collaboratively with energy, design engineering, public policy, capacity delivery, real estate, due diligence, and legal teams on large scale projects with undefined scope and drive towards sustainable long term energy supply solutions.
Chantilly, Virginia11 days ago
p style="margin:0px">We bring talented, energetic, and immediately productive professionals to meet critical customer needs in systems engineering and integration, mission operations, program management, and strategic planning—helping teams deliver resilient capability to the mission with speed, quality, and focus. The role works across government leadership, program office teams, mission systems engineers, digital engineering architects, acquisition stakeholders, contractors, and end-user communities to align capabilities, mission threads, and operational outcomes.
Chantilly, Virginia11 days ago
Rather than serving as the day-to-day program manager for a single operational program, this role supports future-development and pre-acquisition efforts by helping turn mission needs into executable acquisition and technical plans, preparing programs for key decisions, and driving disciplined follow-through across government and industry stakeholders. Experience supporting government acquisition and future-development efforts, including one or more of the following: acquisition strategy, requirements development, RFP support, source selection, SOW/PWS development, CDRLs, program baselines, risk management, milestone reviews, contractor oversight, or program execution planning.
Chantilly, Virginia11 days ago
p style="margin:0px">We bring talented, energetic, and immediately productive professionals to meet critical customer needs in systems engineering and integration, mission operations, program management, and strategic planning, helping teams deliver resilient capability to the mission with speed, quality, and focus. This role provides senior systems engineering, mission engineering, requirements, technical governance, and acquisition-support expertise for government customers standing up, inheriting, assessing, and scaling space-based sensing programs at varying stages of maturity.