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Data Scientist - Mid Level active TS/SCI

Leidos Open · verified Oct 24, 2026
St. Louis Full-time Mid-level Data Science

At a glance

Mid-level Data Science role at Leidos. St. Louis · full-time · $59,150–$106,925 base.

SalaryStated by Leidos
$59,150 – $106,925
Base salary for this role, in USD per year, as published in the posting.
RoleData Science
SeniorityMid-level
LocationSt. Louis
EmploymentFull-time
Base pay$59,150–$106,925
PostedSep 17, 2026 · 5w ago
Role brief

dataroles summary, based on the employer's posting.

What you'll do

  • Map current data practices, procedures and system dependencies, then help shape automated workflows across programs
  • Work with senior data scientists, database developers and analysts to update and maintain database processes
  • Build Python scripts to automate data preparation, checks, transformation and reporting, including replacing legacy applications
  • Improve models and simulations for production, monitoring and change-detection data, and investigate questions with statistics and algorithms
  • Turn analytical results into clear explanations and dashboards that non-technical users can understand

What you bring

  • You have three to six years of programming experience with Python or R, data preprocessing and basic machine learning
  • You hold an active TS/SCI clearance and are willing to pursue polygraph approval
  • You have a related bachelor's degree, though additional experience may substitute
  • You can work with ArcGIS, ArcSDE and ArcPro, and have familiarity with PostgreSQL, PostGIS, PgAdmin and APIs

Who this fits

This mid-level role suits someone who can support GEOINT data integration across collection, analysis and product delivery. You'll work in St. Louis on data modernization alongside senior technical colleagues. Polygraph approval is part of the clearance pathway.

From the employer

Leidos is actively seeking a Data Scientist to join our growing team in St. Louis, MO.

This interesting work requires staff qualified to have a basic understanding of GEOINT integration work. The work requires a basic understanding of GEOINT from collection, exploitation, analysis and product delivery capabilities.

Primary Responsibilities

  • Provide data management and automation support to a specialized imagery and geospatial analysis division within a government or enterprise organization.

  • Assist with developing a modernized data management workflow supporting multiple organizational programs.

  • Collaborate with senior data scientists, database developers, and analysts to implement and sustain updated database processes and workflows.

  • Research and document existing data management practices, procedures, and system dependencies.

  • Help design improved workflows with automation incorporated from the outset.

  • Ensure new workflows integrate effectively with modern database applications and enterprise-level application programming interfaces.

  • Enhance existing models and simulations involving production, monitoring, and change-detection data.

  • Support additional data management and modernization initiatives as required.

  • Develop code and scripts, including the conversion of legacy applications written in multiple programming languages into Python-based solutions.

  • Implement enterprise database management standards, processes, and controls.

  • Automate repetitive data preparation, validation, transformation, and reporting tasks.

  • Deliver technical solutions that apply industry best practices to modernize existing operational processes.

  • Conduct data investigations using applied statistics, algorithm development, and collaboration with subject-matter experts.

  • Translate complex analytical findings and operational realities into clear explanations for non-technical audiences.

  • Create visualizations and dashboards from diverse data sources that are accessible and understandable to non-technical users.

Basic Qualifications

  • 3-6 years’ experience in programming languages such as Python or R (statistical analysis), data preprocessing, and basic machine learning algorithms.

  • Active TS/SCI with willingness to be approved for a Polygraph

  • Bachelor’s Degree in related field (additional years of experience can be considered in lieu of degree)

  • Working knowledge of ArcGIS, ArcSDE, ArcPro

  • Familiarity with: common data science libraries and frameworks, plus:

    • PostgreSQL, Postgis, PgAdmin

    • Application programming interfaces (APIs)

Preferred Qualifications

  • Experience with workflow management systems, such as Flowable, and

  • Working knowledge of MapInfo/ MapBasic GIS/ database software

  • Experience with data visualization software such as Tableau

#GEOINTMISSION

#NSBA

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

September 17, 2026

For 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.

Pay Range:

Pay Range $59,150.00 - $106,925.00

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.

Opportunity

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

Each morning you get everything that fits, strongest first.

Data Science$50k+

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.