Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

AI/ML Engineer (TS/SCI with FS Poly)

Vantor

Vantor is forging the new frontier of spatial intelligence, helping decision makers and operators navigate what’s happening now and shape what’s coming next. Vantor is a place for problem solvers, changemakers, and go-getters—where people are working together to help our customers see the world differently, and in doing so, be seen differently. Come be part of a mission, not just a job, where you can: Shape your own future, build the next big thing, and change the world.

To be eligible for this position, you must be a U.S. Person, defined as a U.S. citizen, permanent resident, Asylee, or Refugee.

Export Control/ITAR: Certain roles may be subject to U.S. export control laws, requiring U.S. person status as defined by 8 U.S.C. 1324b(a)(3).

Please review the job details below.

This position requires an active U.S. Government Security Clearance at the TS/SCI level with required polygraph.

Responsibilities:

  • Develop, implement, and maintain AI/ML-enabled applications with a focus on agent-based workflows, LLM integration, and retrieval-augmented generation capabilities.
  • Design and support agent-based application architectures, including orchestration logic, tool use, memory management, and integration with external systems.
  • Implement and maintain RAG pipelines, including document processing, embedding generation, retrieval configuration, prompt assembly, and response optimization.
  • Integrate LLMs into applications using available APIs, AI frameworks, and emerging protocols such as MCP.
  • Develop and maintain REST APIs, particularly Python-based services, to support data retrieval, system integration, agent workflows, and application functionality.
  • Support full-stack development of production-ready AI applications, including backend services, user-facing components, and enterprise deployment considerations.
  • Process, transform, and organize structured and unstructured data to support AI/ML workflows, model interaction, and application performance.
  • Design or refine Postgres schemas and data models to improve data organization, query performance, and application scalability.
  • Optimize AI-enabled applications for performance, reliability, usability, and maintainability in enterprise environments.

Minimum Qualifications:

  • Bachelor’s degree in computer science or related area of study.
  • Senior Labor Category: Minimum 8 years of experience with a Bachelor’s degree; or 7 years of experience with a Master’s degree; or 6 years of experience with a Doctorate.
  • Active/current TS/SCI with required polygraph.
  • Willingness to work onsite full time.
  • US citizenship required.
  • Proficiency in Python and common data/AI libraries.
  • Experience developing AI/ML applications, including LLM-integrated applications, RAG workflows, or similar retrieval-based capabilities.
  • Experience with agent-based programming concepts, AI frameworks, and tool-based LLM application development.
  • Strong understanding of AI/ML foundational concepts, including transformers, algorithms, LLM behavior, data processing, and model integration patterns.
  • Experience designing, developing, or integrating REST APIs to retrieve, process, or exchange data across systems.
  • Familiarity with production-ready application development practices, including reliability, maintainability, testing, and deployment considerations.

Preferred Qualifications:

  • Experience with MCP or similar protocols for connecting AI agents to tools, data sources, and enterprise systems.
  • Experience developing full-stack agent-based applications, including frontend interfaces, backend services, orchestration layers, and enterprise deployment patterns.
  • Experience with Python REST API frameworks such as FastAPI or Flask.
  • Experience implementing or optimizing LLM memory management approaches, including conversational memory, session state, context management, and retrieval-based memory.
  • Experience with agent-based application optimization techniques, including prompt/tool orchestration, latency reduction, context window management, evaluation, observability, and cost/performance tuning.
  • Experience working with vector databases, embedding models, semantic search, and retrieval configuration.
  • Experience with Docker containers and containerized development environments.
  • Experience with AWS or other cloud environments.
  • Experience with Postgres, data transformation, structured/unstructured data processing, and schema refinement.

Pay Transparency: To support pay transparency, Vantor includes salary ranges in all U.S. job postings. Starting pay for this role will fall within the listed range and will be based on factors such as experience, qualifications, skills, location, and market conditions. Candidates who meet the minimum requirements for the role should not expect to receive compensation at the top of the range. The listed range reflects the expected pay for this position, and final offers will be determined based on each candidate’s experience, expertise, and alignment with the role.

 

● The base pay for this position within the Washington, DC metropolitan area is: $137,000.00 - $182,000.00 - $200,200.00 annually.

For all other states, we use geographic cost of labor as an input to develop market-driven ranges for our roles, and as such, each location where we hire may have a different range.

Benefits: Vantor offers a competitive total rewards package that goes beyond the standard, including a robust 401(k) with company match, mental health resources, and unique perks like student loan repayment assistance, adoption reimbursement and pet insurance to support all aspects of your life. You can find more information on our benefits at: 

The application window is three days from the date the job is posted and will remain posted until a qualified candidate has been identified for hire. If the job is reposted regardless of reason, it will remain posted three days from the date the job is reposted and will remain reposted until a qualified candidate has been identified for hire. 

The date of posting can be found on Vantor's Career page at the top of each job posting.

To apply, submit your application via Vantor's Career page.

EEO Policy: Vantor is an equal opportunity employer committed to an inclusive workplace. We believe in fostering an environment where all team members feel respected, valued, and encouraged to share their ideas. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, sex, gender identity, sexual orientation, disability, protected veteran status, age, or any other characteristic protected by law.

Vacancy posted 1 hour ago
Similar jobs that could be interesting for youBased on the AI/ML Engineer (TS/SCI with FS Poly) in McLean, VA vacancy
  •  ...Government facility Requires TS/SCI, Full Scope Poly (must have already and be...  .... WORK REQUIREMENTS: Software Engineering; HRR; No • The Contractor shall work closely with the Sponsor's product owner and...  ...integrating APIs Desired Skills: AI/MLAI modeling with... 
    Suggested
    Full time
    For contractors
    Immediate start
    Remote work

    MorphGroup

    McLean, VA
    4 days ago
  • $53k - $270k

     ...McLean, Virginia, seeks candidates for developing innovative AI and machine learning solutions. Responsibilities include data...  ...have relevant educational backgrounds and certifications like TS/SCI w/ Poly, with varying experience levels required. This role offers a salary... 
    Suggested

    International Executive Service Corps

    McLean, VA
    1 day ago
  • $150k - $190k

     ...before. So do we. Team CATHEXIS operates with an all-in mindset. We are working...  ...a dynamic Senior Data Scientist/ML Engineer with an active TS/SCI CI Poly or higher to join our team. The...  ...Top Secret clearance with CI or FS Poly. Bachelor's degree in Computer... 
    Suggested
    Temporary work
    Work experience placement

    Cathexis

    McLean, VA
    2 days ago
  • Job Title Location McLean, VA, 22101, United States Required Degree 4 Year Degree Minimum Experience 10 Years Description Requirements Additional Information U.S. Citizenship Required U.S. Security Clearance Level Top Secret / SCI / Full Scope Poly
    Suggested

    The Metamorphosis Group, Inc.

    McLean, VA
    6 days ago
  • $125k - $185k

     ...AI Platform Engineer Location: McLean, VA (Onsite 5 Days per Week) Employment Type: Full-Time Salary Range: $125,000 - $185,000 Clearance Required: Active TS/SCI with Counterintelligence Polygraph Certification Requirement: Current IAM... 
    Suggested
    Full time
    Temporary work
    Immediate start

    PGTEK

    McLean, VA
    4 days ago
  •  ...VECTOR JOB OPENING Job ID: 627 Job Title: Software Engineer Clearance Required: Must have an active TS/SCI with CI Poly for this job. Department: Software Engineering Location: Reston, VA 100% onsite- schedule can be 40 hours a week - we can do compressed... 
    Permanent employment

    Vector Talent Resources

    McLean, VA
    6 days ago
  •  ...As a Software Development Engineer with a focus on Identity and Access Management (IDAM), you will leverage your...  ...'s degree with 10+ years of experience. Active TS/SCI clearance and ability to obtain and maintain a CI poly. Must meet DoD 8570 IAT Level II requirements... 
    Temporary work
    Relocation package

    Enssolutions

    McLean, VA
    1 day ago
  •  ...Software Developer SME (Systems Software) (TS/SCI with Poly Required) GCI embodies excellence,...  ...Analytics and Software Development, Engineering, Targeting and Analysis, Operations, Training...  ...or background deploying and supporting AI/ML workloads or model serving... 

    GCI

    McLean, VA
    2 days ago
  •  ...VECTOR JOB OPENING Job ID: 624 Job Title: Cloud Engineer Clearance Required: Must have an active TS/SCI with CI Poly for this job. Department: Software Engineering Location: Reston, VA 100% onsite- schedule can be 40 hours a week - we can do compressed... 
    Permanent employment

    Vector Talent Resources

    McLean, VA
    6 days ago
  •  ...Job Title: AI Platform – Customer Success Engineer Location: McLean, VA (Onsite) Clearance Requirement: Active TS/SCI with CI Polygraph (required) Position Summary We are seeking an AI Platform Customer Success Engineer to join a diverse, high-performing... 
    Full time
    Temporary work
    Immediate start

    PGTEK

    McLean, VA
    6 days ago
  •  ...step in your professional career with Solerity. As a recognized...  ...providing Information Technology, Engineering Services, Program Management,...  ..., deploy, and maintain AI/ML models and analytics platforms...  ...technical field. Active TS/SCI clearance with Polygraph required... 
    Full time
    Temporary work
    For contractors
    Local area
    Remote work
    Flexible hours

    Solerity, Inc.

    McLean, VA
    2 days ago
  •  ...research, and other missions. They prime on several programs and also have a number of subcontracts, and they always need engineers with a TS/SCI + FS Poly in Reston, Chantilly, McLean, and other sites in Virginia. Salaries here are quite good, plus a 10% 401(k)... 

    stanleyreid.com

    McLean, VA
    2 days ago
  •  ...Analytics and Software Development, Engineering, Targeting and Analysis,...  ...trusted and reliable partnerships with our customers and industry....  ...the hard problems. As an AI Software Engineer, a typical day...  ...Intelligence and Machine Learning (AI/ML) architecture and develop an... 

    Gci Careers

    McLean, VA
    1 day ago
  •  ...any field in science or engineering. That means we bring intellectual...  ...and de-biased AI platforms to quantum networking...  ...itself. Come solve with us We offer...  ...looking for a Senior AI/ML Developer to join an R&...  ...Qualifications ~ Active TS/SCI clearance with polygraph... 
    Temporary work
    Local area

    Aperio Global LLC

    McLean, VA
    2 days ago
  •  ...Description The Sponsor requires Data Engineering support to evaluate, optimize, and implement...  ...Contractor will work collaboratively with data consumers, technical teams,...  ...of releases. Requirements Active TS/SCI w/ FS poly required prior to application Required... 
    Contract work
    For contractors
    Local area

    Leading Path Consulting

    McLean, VA
    28 days ago
  •  ...Data Analytics and Software Development, Engineering, Targeting and Analysis, Operations, Training...  ...trusted and reliable partnerships with our customers and industry. At GCI, we...  ...US Citizen and requires an active/current TS/SCI with Polygraph clearance.   Equal Opportunity... 

    Gci Careers

    McLean, VA
    1 day ago
  •  ...chartered to work for the public interest, with no commercial conflicts to influence what...  ...problems? Do you want to work alongside engineers and scientists that are experts in their...  ...development. This role requires an active TS//SCI with a Full Scope Polygraph. The... 
    Work experience placement
    Internship
    Local area
    Immediate start

    The MITRE Corporation

    McLean, VA
    6 days ago
  •  ...opportunities on this 50-person, growing team for a variety of engineers, including AWS DevOps Engineers, ETL Developers, Full-Stack,...  ...team allows large flexibility in each person's work hours. All roles require US citizenship and a current TS/SCI + FS Poly clearance.... 
    For contractors

    stanleyreid.com

    McLean, VA
    3 days ago
  • $87.1k - $157.45k

     ...in Reston, VA and requires an active TS/SCI with Polygraph for consideration. Basic...  ...level - Mid-Level Software Development Engineer ~ Bachelor’s degree in Computer...  ...DevOps practices ~ Experience integrating AI/ML or LLM-based capabilities is a plus... 
    For contractors
    Local area
    Immediate start

    Leidos

    McLean, VA
    15 hours ago
  • $191.25k - $258.75k

     ...Lead Infrastructure Engineer Seize your opportunity to make a personal...  ...provide the client with the necessary timeliness, accuracy...  ...Security Clearance Level: TS/SCI with active polygraph Location...  ...capabilities in digital modernization, AI/ML, Cloud, Cyber and application... 
    Temporary work
    Work experience placement
    Immediate start
    Remote work
    Worldwide
    Flexible hours

    General Dynamics

    McLean, VA
    4 days ago
  • $191.25k - $258.75k

     ...Lead Infrastructure Engineer Seize your opportunity to make a personal impact as a Lead...  ...operational IT capabilities provide the client with the necessary timeliness, accuracy and...  ...: Security Clearance Level: TS/SCI with active polygraph Location: Tysons... 
    Work experience placement

    General Dynamics Information Technology

    McLean, VA
    4 days ago
  •  ...laid-back, supportive environment encourages continuous learning with certification bonuses and flexible schedules. They demonstrate...  ...: Experience with cloud platforms Experience with NLP The work is located in Tysons, VA and requires a TS/SCI + FS Poly.... 
    Flexible hours

    stanleyreid.com

    McLean, VA
    3 days ago
  •  ...Key Skills: ctive TS/SCI with Polygraph Data Science experience Python and/or R Machine Learning/Computer Vision/Object Detection Pytorch, Keras, and overhead imagery Summary of Position: You will join a skilled team applying cutting... 
    Work at office

    Macpower Digital Assets Edge

    McLean, VA
    4 days ago
  •  ...Analytics and Software Development, Engineering, Targeting and Analysis,...  ...trusted and reliable partnerships with our customers and industry....  ...experience integrating AI/ML services and models (translation...  ...and requires an active/current TS/SCI with Polygraph clearance.... 

    GCI

    McLean, VA
    2 days ago
  •  ...OPENING Job ID: 628 Job Title: Full Stack Developer Clearance Required: Must have an active TS/SCI with CI Poly for this job. Department: Software Engineering Location: Reston, VA 100% onsite- schedule can be 40 hours a week - we can do compressed work... 
    Permanent employment

    Vector Talent Resources

    McLean, VA
    6 days ago
  •  ...Systems Engineer/Developer (TS/SCI with Poly Required) GCI embodies excellence, integrity, and professionalism. The employees supporting our customers deliver unique, high-value mission solutions while effectively leveraging the technological expertise of our valued... 

    GCI

    McLean, VA
    3 days ago
  •  ...Data Analytics and Software Development, Engineering, Targeting and Analysis, Operations,...  ...maintaining trusted and reliable partnerships with our customers and industry. At GCI, we...  ...Citizen and requires an active/current TS/SCI with Polygraph clearance. Equal Opportunity... 
    Full time

    GCI Incorporated

    McLean, VA
    15 hours ago
  •  ...Overview AI/ML Engineer McLean, VA TS/SCI with Poly At Bcore, our strength comes from how we deliver impact to the mission. Whether it’s architecting critical IT solutions, producing actionable intelligence, or developing cutting edge technology, we succeed because of... 
    Full time

    Bridge Core

    McLean, VA
    1 day ago
  •  ...Location: Mclean, VA Clearance Required: TS/SCI with CI Polygraph (US Citizen) Employment Type: Full-Time Praescient Analytics is a leader in delivering advanced analytic, data engineering, and technology integration solutions in support of the Department of... 
    Full time
    Shift work

    Praescient Analytics

    McLean, VA
    4 days ago
  •  ...We are seeking a hands-on Systems Engineer (SME) with deep expertise across infrastructure,...  ...architectures  Data analytics, AL/ML platform exposure  Experience supporting...  ...solutions Requirements *Eligible TS/SCI w/ FS Poly QUALIFICATION  Bachelor’s Degree... 
    Full time

    Leading Path Consulting

    McLean, VA
    3 hours ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to AI/ML Engineer (TS/SCI with FS Poly). Be the first to apply!