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Senior Data Scientist

SOSi sosi.com Open · verified Oct 24, 2026
On-site Chantilly Full-time Senior Data Science

At a glance

Senior Data Science role at SOSi. Chantilly · full-time · $102,414–$212,706 base.

SalaryStated by SOSi
$102,414 – $212,706
Base salary for this role, in USD per year, as published in the posting.
RoleData Science
SenioritySenior
LocationChantilly
WorkplaceOn-site
EmploymentFull-time
Base pay$102,414–$212,706
PostedJun 30, 2026 · 3mo ago
Role brief

dataroles summary, based on the employer's posting.

What you'll do

  • Apply statistical methods, machine learning and advanced analytics to examine cyber-related data
  • Work with cyber subject matter experts to develop AI and machine learning models for client challenges
  • Clean, organize and process large amounts of unstructured text, while improving performance
  • Use analytical models to identify patterns in the cyber data

What you bring

  • An active, in-scope TS/SCI clearance with polygraph, plus U.S. citizenship
  • Three to five years working as a data scientist and a degree in a STEM field
  • Programming ability in Python or a comparable language, with experience using Linux and Windows
  • Hands-on work with cyber data and large unstructured text datasets

Who this fits

This suits a senior data scientist who can apply modeling techniques to cyber data and collaborate with cyber specialists. The job is based on-site in Chantilly, Virginia, and requires U.S. citizenship and an active clearance with polygraph.

From the employer

Founded in 1989, SOSi is among the largest private, founder-owned technology and services integrators in the defense and government services industry. We deliver tailored solutions, tested leadership, and trusted results to enable national security missions worldwide.

SOSi is seeking a skilled Data Scientist to support a US government customer in Chantilly, VA.

This role requires applying advanced analytics, statistical modeling, and machine learning techniques to identify, analyze, cyber related data. This role involves working closely with cyber SMEs to build AI/ML models and analytics to solve client's challenges.

Minimum Requirements

  • Active in-scope TS/SCI clearance with poly. This security clearance requires U.S. citizenship. Candidates will not be nominated for new clearances.
  • 3-5 years of experience as a Data Scientist, with a STEM degree (field such as computer science, statistics, data analytics, computer engineering, mathematics, etc.).
  • Programming knowledge in Python or similar language.
  • Experience with both Linux and Windows® Operating Systems.
  • Experience working with Cyber data to include examples such as (Shodan, Censys.IO, etc.).
  • Demonstrated experience with cleaning, managing, optimizing performance with, and processing large volumes of unstructured text data.

Preferred Qualifications

  • Experience in the US Intelligence Community.

Work Environment

  • Office setting with a combination of desk work and meetings.

Working at SOSi

All interested individuals will receive consideration and will not be discriminated against for any reason.

Opportunity

Data Science work from LinkedIn, X, Reddit and Upwork, in one list.

Each morning you get everything that fits, strongest first.

Data Science$100k+

Find me work

By the team behind dataroles.

Find me work
Opportunity

Data Science work from LinkedIn, X, Reddit and Upwork, in one list.

Each morning you get everything that fits, strongest first.

Find me work

By the team behind dataroles.