Senior Computer Scientist

Sorry, this job was removed at 08:22 p.m. (CST) on Friday, Feb 27, 2026
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Washington, DC
In-Office
Artificial Intelligence • Cloud • Information Technology • Security • Software
The Role
Job Summary & Responsibilities

ECS is seeking a TS-cleared Senior Computer Scientist to support one of our mission critical programs for the Department of Justice in Washington, DC.


We offer the chance to support the world’s finest law enforcement organization and help the people that keep us safe. In this job you will support agents, analysts, and professionals and the technology they use to fight terrorism, espionage, cyber-attacks, and major criminal threats.


We are seeking candidates committed to high quality to provide innovative solutions. As a Senior Computer Scientist, you will collaborate with customers, often engaging directly with non-technical personnel, to understand their application related needs, suggest solutions, and complete work in a timely manner. This position performs activities associated with the implementation, integration, operations and support of computer systems in a mission-critical response operations environment.


  • Perform programming, code refactoring, systems operations, and / or design under the supervision of a more senior staff member, or independently on low complexity tasks.
  • Use tools and programming languages, such as C++, Perl, and Python to implement algorithmically complex information processing projects.
  • Identify, recommend remedies, and / or implement solutions which enhance existing software and system capabilities, performance, security, and other related functionality.
  • Evaluate COTS, OGA, Open Source and other existing software and systems for implementation in the CTD.
  • Build and / or support preparation of technical, business, and end user documentation.

Salary Range: $155,000 - $195,000

General Description of Benefits

Preferred Qualifications
  • US citizenship with active Top Secret clearance
  • Bachelor's degree in Computer Science, Computer Engineering, or related degree.
  • Minimum of eight (8) years of relevant work experience
  • Demonstrate a high level of proficiency scoping, planning, and completing full lifecycle engineering projects.
  • Must be able to demonstrate working knowledge of full lifecycle engineering projects.
  • Must be able to demonstrate working knowledge in one of the following areas: UI/UX, Front end engineering, API development, or data engineering.
  • Design, code, test, debug, and document those programs.
  • Provide advanced mathematical/scientific software.
  • Assist on all phases of software programming applications.
  • Evaluate new and existing software products.

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The Company
HQ: Fairfax, VA
2,129 Employees
Year Founded: 1993

What We Do

ECS, a segment of ASGN (NYSE: ASGN), delivers advanced solutions and services in cloud, cybersecurity, artificial intelligence (AI), machine learning (ML), application and IT modernization, and science and engineering. The company solves critical, complex challenges for customers across the U.S. public sector, defense, intelligence and commercial industries.

ECS maintains partnerships with leading cloud, cybersecurity, and AI/ML providers and holds specialized certifications in their technologies.

Headquartered in Fairfax, Virginia, ECS has more than 3,400 employees throughout the U.S. and has been recognized as a Top Workplace by The Washington Post for the last five years.

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