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

Senior Data Scientist

$100k - $140k
Full-time

Prometheus Federal Services

Position Summary

Prometheus Federal Services (PFS) is a trusted partner of federal health agencies. We are seeking a Senior Data Scientist to support Department of Veterans Affairs (VA) programs through advanced analytics, predictive modeling, data science, and AI-enabled solutions. This role will focus on transforming complex VA data assets into actionable insights that support operational decision-making, healthcare outcomes, data modernization initiatives, and enterprise reporting.

The Senior Data Scientist will collaborate with business stakeholders, data engineers, analysts, and program leadership to design, develop, and operationalize advanced analytical solutions. The ideal candidate brings deep expertise in statistical analysis, machine learning, data engineering concepts, and healthcare analytics, along with experience working within complex federal data environments.

Essential Functions & Responsibilities

Data Science, Advanced Analytics & AI/ML

  • Develop and implement advanced analytical models to identify trends, patterns, risks, and opportunities within large and complex datasets.
  • Design, build, and deploy machine learning models to support predictive and prescriptive decision-making.
  • Apply statistical techniques and data science methodologies to solve complex business and operational challenges.
  • Develop forecasting, classification, clustering, anomaly detection, and optimization models to support program objectives.
  • Support AI-enabled analytical solutions that improve operational insight, performance measurement, and resource planning.
  • Evaluate emerging AI, machine learning, and advanced analytics technologies for applicability within VA environments.
  • Develop model monitoring and evaluation frameworks to ensure accuracy, stability, explainability, and performance.

Data Exploration, Preparation & Feature Engineering

  • Conduct exploratory data analysis (EDA) to uncover patterns, anomalies, and key business drivers.
  • Perform data profiling and quality assessments to identify issues impacting analytical outcomes.
  • Develop feature engineering strategies to improve model performance and business relevance.
  • Prepare and transform structured and semi-structured datasets for advanced analytical applications.
  • Collaborate with data engineering teams to establish scalable analytical datasets and model-ready data pipelines.

Data Integration, Engineering & Architecture Collaboration

  • Partner with data engineers and architects to integrate data across diverse VA systems, databases, APIs, and enterprise platforms.
  • Support the design and optimization of data pipelines and analytical workflows.
  • Contribute to data modeling efforts that improve accessibility, scalability, and performance of analytical solutions.
  • Assist in developing reusable analytical frameworks and data science assets across programs.
  • Ensure analytical solutions align with data governance, security, and compliance requirements.

Business Partnership, Strategy & Communication

  • Translate business questions, policy objectives, and operational needs into analytical approaches and measurable outcomes.
  • Present analytical findings, model outputs, and recommendations to technical and non-technical stakeholders.
  • Develop executive-level briefings, data visualizations, and decision-support materials.
  • Partner with program leadership to identify opportunities to transition from descriptive reporting to predictive and prescriptive analytics.
  • Communicate model assumptions, limitations, and risks to stakeholders in a clear and understandable manner.

Governance, Documentation & Continuous Improvement

  • Develop and maintain documentation for analytical methods, models, data sources, assumptions, and validation procedures.
  • Support analytical governance and best practices related to model lifecycle management and reproducibility.
  • Participate in peer reviews and quality assurance activities for analytical products.
  • Continuously evaluate new methodologies and technologies to improve analytical capabilities and program outcomes.
  • Mentor junior data scientists, analysts, and technical team members.
Minimum Qualifications
  • Bachelor's degree in Data Science, Statistics, Computer Science, Applied Mathematics, Operations Research, Engineering, Healthcare Informatics, or a related field.
  • 7–10 years of experience in data science, advanced analytics, machine learning, or related technical roles.
  • Strong proficiency in Python for data science and machine learning applications (e.g., pandas, NumPy, scikit-learn, TensorFlow, PyTorch, or similar).
  • Advanced knowledge of statistical methods, predictive modeling, and machine learning techniques.
  • Strong proficiency in SQL for data extraction, transformation, and analysis.
  • Experience developing and validating machine learning models, including classification, regression, clustering, forecasting, and anomaly detection.
  • Experience conducting exploratory data analysis and communicating insights to diverse audiences.
  • Familiarity with model evaluation techniques, performance metrics, and validation methodologies.
  • Experience working with large-scale structured and semi-structured datasets.
  • Understanding of data engineering concepts, including ETL/ELT processes, data pipelines, and cloud-based data platforms.
  • Strong problem-solving, critical thinking, and analytical skills.
  • Excellent written and verbal communication skills.
  • Authorized to work in the U.S. indefinitely without sponsorship.
  • Ability to obtain a Public Trust clearance.
Preferred Qualifications
  • Master's degree or PhD in Data Science, Statistics, Computer Science, Applied Mathematics, Operations Research, Engineering, Healthcare Informatics, or a related discipline.
  • Experience supporting the Department of Veterans Affairs (VA), Veterans Health Administration (VHA), or other federal healthcare agencies.
  • Experience working with healthcare, clinical, claims, operational, or population health datasets.
  • Experience with cloud-based analytics platforms such as Azure Synapse, Azure Machine Learning, Databricks, AWS, or comparable environments.
  • Familiarity with Power BI, Tableau, or other business intelligence and visualization platforms.
  • Experience supporting enterprise data modernization, governance, or digital transformation initiatives.
  • Experience developing explainable AI (XAI) and responsible AI solutions in regulated environments.
  • Experience mentoring and leading technical teams or analytical workstreams.

Compensation & Benefits

PFS offers a benefits package that may include health, dental, and vision coverage; flexible spending accounts; disability and life insurance; a retirement plan; paid time off; and other programs to support employees and their families. Learn more about PFS Benefits.

The posted salary range is the company’s good-faith estimate for this role. PFS benefits and compensation are determined by various factors, including, but not limited to, location; the individual's particular combination of education, knowledge, skills, competencies, and experience; as well as contract and organizational requirements. Salary Range: $100,000 - $140,000

Equal Employment Opportunity

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, parental status, national origin, age, disability, genetic information, political affiliation, military service, or other status protected by law.

Accommodations

PFS is committed to providing equal employment opportunities to all applicants. If you require a reasonable accommodation during the application or interview process, please contact us at View email address on us.fitly.work. Reasonable accommodations are available to ensure applicants with disabilities have equal access to the hiring process, in accordance with the Americans with Disabilities Act (ADA) and applicable laws.

Workplace Health, Safety, and Compliance

This position may be subject to client‑specific or government‑mandated vaccination, health, or safety requirements, which may change over time.

Texting Privacy Policy and Information:

  • Message type: Informational; you will receive text messages regarding your application and potentially regarding interview scheduling.
  • No mobile information will be shared with third parties/affiliates for marketing/promotional purposes.
  • Message frequency will vary depending on the application process.
  • Msg & data rates may apply.
  • Opt out at any time by texting "stop".

Vacancy posted 4 days ago
Similar jobs that could be interesting for youBased on the Senior Data Scientist in Fairfax, VA vacancy
  •  ...MANTECH seeks a motivated, career and customer-oriented Senior GEOINT Data Scientist to join our team in Springfield, VA ! The Senior GEOINT Data Scientist will leverage their strong technical background and knowledge to support critical data environments, to... 
    Senior
    Work at office

    MANTECH

    Springfield, VA
    8 hours ago
  • $90 - $95 per hour

    Position: Data Scientist SeniorLocation: McLean, VirginiaDuration: ContractJob ID: 179084Job Overview: We are seeking a highly skilled and experienced Data Scientist Senior to join our team. The ideal candidate will have a strong background in data analysis, machine learning... 
    Senior
    Full time

    Pinnacle Group

    McLean, VA
    2 days ago
  • $82.1k - $172.4k

    Job Title: Senior Data ScientistJob Category: ScienceTime Type: Full timeMinimum Clearance Required to Start: TS/SCI with PolygraphEmployee...  ..., and document methodologies. Mentor mid-level data scientists and promote analytic best practices across the program. Qualifications... 
    Senior
    Contract work
    Work experience placement
    Flexible hours

    CACI International

    Springfield, VA
    3 days ago
  • $99k - $225k

    Data Scientist, SeniorThe Opportunity: As a data scientist, you’re excited at the prospect of unlocking the secrets held by a data set, and you’re fascinated by the possibilities presented by IoT, machine learning, and artificial intelligence (AI). In an increasingly connected... 
    Senior
    Full time
    Contract work
    Part time
    Work at office
    Local area
    Remote work

    Booz Allen Hamilton

    McLean, VA
    4 hours ago
  • $148.5k - $223.9k

     ...future of AI, and you are the future of Salesforce.The TeamThe Data Science & Analytics team in Salesforce Cyber Security Operations Center seeks an experienced, driven, and creative Senior Data Scientist to join the team. We explore, invent, build and scale new ways to... 
    Senior
    Full time

    Salesforce

    McLean, VA
    1 day ago
  • $99k - $225k

    Data Scientist, SeniorThe Opportunity:As a data scientist, you’re excited at the prospect of unlocking the secrets held by a data set, and you’re fascinated by the possibilities presented by IoT, machine learning, and artificial intelligence. In an increasingly connected... 
    Senior
    Full time
    Contract work
    Part time
    Work at office
    Local area
    Remote work

    Booz Allen Hamilton

    Springfield, VA
    4 days ago
  • $146.2k - $228.4k

    ResponsibilitiesNoblis is seeking a fully cleared Data Scientist with a TS/SCI and a Polygraph to join our team in Reston, Virginia! As a Data Scientist, you will support the intelligence community by developing innovative, data-driven solutions to address mission-critical... 
    Senior
    Full time
    Contract work
    Part time
    Local area
    Remote work

    Noblis

    Reston, VA
    4 days ago
  •  ...make, then choose MITRE - and make a difference with us.MITRE’s Data Science and Engineering department is looking for qualified...  ...Responsibilities:The successful candidate for this position is a hybrid Data Scientist and Data Engineer who combines strong foundations in computer... 
    Senior
    Internship
    Local area

    Mitre

    McLean, VA
    8 hours ago
  • $112.2k - $196.4k

     ...culture that empowers you to achieve your full potential. Unleash your talent and redefine what’s possible.Job Description:The Data Analysis - Senior, leads the integration and application of advanced data analytics to solve complex business challenges and enhance mission... 
    Senior
    Full time
    For contractors
    Remote work
    Flexible hours

    Parsons

    Springfield, VA
    4 days ago
  • Provide analytical insight from organizational data to support mission critical decision making. Understand business needs and identify...  ...relationships with team members, subject matter experts, and senior leadersResearch and apply new best practices and ethical AIAdvise... 
    Senior
    Internship
    Monday to Friday

    Navy Federal Credit Union

    Vienna, VA
    2 days ago
  • TENICA is looking to hire a Senior Data Scientist in Springfield, VA. MUST HAVE TS/SCI with CI poly.   Develop and conduct algorithm quality trade studies related to synthetic aperture radar imagery, identifying best use cases for selected algorithms, and characterizing... 
    Senior
    Work experience placement
    Remote work

    Tenica and Associates

    Springfield, VA
    more than 2 months ago
  •  ...individual with deep technical knowledge and strong analytical skills in Identity and Access Management (IAM) to join our team as a Senior Principal Information Engineer. This is a full-time remote role with minimal travel requirements.This Senior Principal Information... 
    Senior
    Full time
    For contractors
    Remote work

    ASRC Federal Holding Company

    Reston, VA
    1 day ago
  • $154.05k - $278.48k

     ...Leidos is seeking a Senior AI/Data Scientist to drive advanced AI development for a strategic Defense Threat Reduction Agency (DTRA) contract, executed in direct partnership with the Defense Intelligence Agency (DIA). You will work within a multi-disciplinary team of... 
    Senior
    Full time
    Contract work

    Leidos

    Reston, VA
    1 day ago
  • Principal Data Scientist (GenAI) - McLean, VA 22102, 5 days onsite a week. Duration: 06 Months (Possible Extensions) Employment type: Contract Seniority level: Mid-Senior level Job Description We are seeking a highly experienced Principal Gen AI Scientist with a strong... 
    Senior
    Contract work

    Unisys

    Mc Lean, VA
    4 days ago
  •  .... Applicants must be authorized to work in the United States without the need for current or future sponsorship.Provide independent data science, machine learning, and analytical insights using member, financial, and organizational data to support mission critical decision... 
    Senior
    Internship
    Work at office
    Monday to Friday

    Navy Federal Credit Union

    Vienna, VA
    2 days ago
  • $104k - $166k

    ResponsibilitiesPeraton Labs is seeking a Data Scientist to support the BNATCS CTO Advanced Analytics and Digital Command Center teams by transforming complex workstream, program, schedule, requirements, and operational data into trusted metrics, analytical insights, and... 
    Senior
    Contract work
    Shift work

    Peraton Corporation

    Herndon, VA
    8 hours ago
  • Celestar Corporation is seeking a Senior Data Scientist (OBI Advanced Analytic Method Augmentation) to support The Defense Intelligence Agency (DIA) under the Object Based Intelligence and Quality Assurance (OBIQUA) task order. The primary place of performance will be at... 
    Senior
    Contract work
    Work at office
    Local area

    Celestar

    Reston, VA
    4 days ago
  • Celestar Corporation is seeking a Senior Data Scientist (OBI Analytic Efficiency Enablement) to support The Defense Intelligence Agency (DIA) under the Object Based Intelligence and Quality Assurance (OBIQUA) task order. The primary place of performance will be at DIA Facilities... 
    Senior
    Contract work
    Work at office
    Local area

    Celestar

    Reston, VA
    4 days ago
  • $100.1k - $185.9k

     ...culture where all of our employees feel respected, valued and have an opportunity to contribute to the company’s success. As a Senior Data Scientist within PNC's Data, Modeling & Analytics organization specifically within our Marketing & Customer Analytics group, you will... 
    Senior
    Full time
    Temporary work
    Part time
    Work experience placement
    Work at office

    The PNC Financial Services Group

    Vienna, VA
    2 days ago
  •  ...Capital One is hiring a Principal Data Scientist for Recommendation & Personalization Systems in McLean, VA. You will collaborate with data scientists, software engineers, and product managers to build scalable personalized recommendations across Capital One’s web and... 
    Senior

    Jobleads-US

    McLean, VA
    5 days ago
  • $138.5k - $158.1k

    In this role, you will: Partner with a cross-functional team of data scientists, software engineers, and product managers to deliver a product customers love Leverage a broad stack of technologies — Python, Conda, AWS, H2O, Spark, and more — to reveal the insights hidden... 
    Senior
    Full time
    Part time
    Local area
    Flexible hours

    Capital One Financial Corp

    Mc Lean, VA
    4 days ago
  •  ...Responsibilities The Senior Principal Data Scientist - AI Lead will be the point of contact for Public Sector / Government stakeholders and will be responsible for end-to-end AI solution delivery. This role will partner with U.S. government agencies on programs that... 
    Senior

    Jobtailor

    Vienna, VA
    2 days ago
  •  ...Technology and Business consulting services. We are in search of a highly motivated candidate to join our talented Team.Job Title: Senior Data EngineerLocation: McLean, VA (Remote)Summary: Our Data Engineering team is dedicated to integrating our client data and... 
    Senior
    Remote work

    Ampcus

    McLean, VA
    4 days ago
  •  ...Dun & Bradstreet is seeking a Senior Principal Data Scientist - AI Lead to drive end-to-end AI solutions for U.S. public sector programs, focusing on trusted data, validation, and risk insight. You will collaborate with government agencies to advance data-driven decisioning... 
    Senior

    Jobleads-US

    Vienna, VA
    5 days ago
  • $120k - $170k

    OverviewSteampunk wants you to join our awesome team as a Senior Data Visualization Engineer. In this role you'll be working with a large team of Steampunk and clients to identify data sources, tools, and mission challenges that can all be brought together to create decision... 
    Senior

    Steampunk

    McLean, VA
    2 days ago
  •  ...then consider a career in Advisory.KPMG is currently seeking a Senior Specialist to join our Federal Advisory practice.Responsibilities...  ...Support delivery of client solutions utilizing analytics, exploratory data analysis, data wrangling, and ETLDerive insights from data using... 
    Senior
    Local area

    KPMG

    McLean, VA
    3 days ago
  •  ...highly motivated candidate to join our talented Team. Job Title: Senior Data Engineer / AI ML Engineer with Python, AI/ML & LLMs. Location...  ...) into production systems.You will work closely with data scientists, ML engineers, and software developers to design and... 
    Senior

    Ampcus

    Reston, VA
    4 days ago
  • $125k - $165k

     ...technology landscape, an organization’s data has never been a more important aspect in...  ...ContributionsWe are looking for seasoned Senior Data Engineer to work with our team and our...  ...project teams of developers and data scientists who build web-based interfaces, dashboards... 
    Senior

    Steampunk

    McLean, VA
    4 days ago
  •  ...Technology and Business consulting services. We are in search of a highly motivated candidate to join our talented Team. Job Title: Senior Data Engineer Location(s): Reston, VA In this role, you will: Design & Implementation (70%)Incorporate Cloud technologies on new... 
    Senior

    Ampcus

    Reston, VA
    4 days ago
  • $155.6k - $306.8k

     ...this role puts you at the forefront of AI transformations.Recruiting for this role ends on 10/30/2026.Work you’ll doAs a Senior Microsoft AI&Data FDE, you will work side by side with senior functional and technical client team members to rapidly prototype and deliver... 
    Senior
    Local area

    Deloitte

    McLean, VA
    3 days ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Senior Data Scientist. Be the first to apply!