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Salary
$58k – $105k per year
Location
In office (Huntsville)
Seniority
Junior
Employment
Full-Time

Confirmed on the employer's own hiring board on Sep 28, 2026. First seen by Alion on Aug 24, 2026. Leidos scores A on the Alion truth index.

Overview
Company
Impact
Profile match
Leidos is an American technology and engineering services company created in 2013 when Science Applications International Corporation split in two, with Leidos taking the technical services and solutions business. It is one of the largest suppliers to the United States government, working across defence programmes, intelligence systems, civil agencies including the Federal Aviation Administration, and healthcare services for the Department of Veterans Affairs. Headquartered in Reston, Virginia, the company also builds security detection products for airports and borders, and has concentrated recent investment on trusted artificial intelligence and autonomy for mission environments.

Leidos Defense Sensors is seeking an Entry-Level Computer Scientist to join our Sensor Research and Analysis Division and support critical missile defense programs. This role is to join a diverse team of scientists, engineers, and analysts supporting advanced radar systems research and development in a high-fidelity modeling and simulation environment. The candidate will be expected to setup, test, analyze, and evaluate radar and weapon system performance using modeling and simulation of air defense systems.

Ideal candidates bring strong analytical and problem-solving skills, work effectively in a collaborative team environment, and build strong working relationships with peers and technical staff across the program. In all of these roles, you will play a vital part in enhancing system performance and advancing mission-critical objectives in support of our national defense.

This position is hiring now for a 2027 start date (January or post-Spring graduation). No clearance is required to start; ability to obtain a DoD Top Secret clearance is required.

Leidos Defense Systems Sector provides a diverse portfolio of systems, solutions, and services covering land, sea, air, space, and cyberspace for customers worldwide. Solutions for Defense include enterprise and mission IT, large-scale intelligence systems, command and control, geospatial and data analytics, cybersecurity, logistics, training, and intelligence analysis and operations support. Our team is solving the world’s toughest security challenges for customers with “can’t fail” missions. To explore and learn more, click here!

Primary Responsibilities

  • Support M&S configuration, testing, and data analysis activities of radar and weapon systems to determine performance capabilities.
  • Demonstrate strong mathematical, analytical, and problem-solving skills in support of analysis products and presentations.
  • Work with a team to find solutions to novel, complex, and non-traditional questions.
  • Prepare and deliver analysis results, technical briefings, and demonstrations to program stakeholders.

Basic Qualifications

  • Bachelor’s degree in Computer Science, Software Engineering, Electrical Engineering, Math, Physics, or related technical field from an ABET-accredited institution.
  • Strong proficiency in Python.
  • Foundational knowledge of C++.
  • Experience in computer programming, algorithm development, or analytical software tools.
  • Ability to analyze data sets and provide meaningful, statistically relevant insights.
  • Strong written and verbal communication skills.
  • Must be a U.S. citizen with the ability to obtain and maintain a Top Secret security clearance.
  • Ability to work onsite in the North Alabama area upon start.

Preferred Qualifications

  • Computer science related internship or project experience.
  • Experience with radar or air/missile defense systems modeling, simulation, analysis, development, or integration.
  • Experience with software development using C++.
  • Experience with MATLAB, modeling tools, or scientific computing environments.
  • Familiarity with Linux environments (e.g., Red Hat Enterprise Linux).

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:

August 24, 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 $57,850.00 - $104,575.00

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.

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