Senior Software Engineer

Astrion
Dahlgren, Virginia, United StatesFull-time$150,000–$190,000Posted Aug 27, 2026

About the role

Overview Senior Software Engineer Location: Dahlgren, VA Job Status: Full Time Clearance: Secret Salary: $150,000 to $190,000 SEG, an Astrion company, is seeking a Senior Software Engineer to add to our excellent Modeling and Simulation Development team in Columbia, MD. SEG is an industry leader in the development and implementation of advanced simulation software solutions for our customer, the United States NAVY and Missile Defense Agency, which include high fidelity radar simulation systems, Air and missile defense threat engineering, analysis and Combat, and radar and missile systems engineering and analysis. SEG has developed and implemented a large number of solutions, which are crucial and critical to the warfighter with the mission of improving essential, and time-sensitive decision-making capabilities while protecting and defending our country. Some of the many solutions SEG has developed include:

Navy ballistic and cruise missile systems analysis

Naval surface and airborne radar systems, R&D and analysis

Advances signal processing, tracking and waveform generation

Software solution design engineering and development The right candidate should be able to quickly grasp architectures and develop new ones while learning and utilizing the latest technologies. The candidate must be a proven team leader who can guide and mentor the team throughout the entire software development process, from design and implementation to testing, documentation and delivery. REQUIRED QUALIFICATIONS / SKILLS

Must have or be able to obtain a DoD security clearance at the required level. Must be able to maintain the required clearance. Eligibility for cleared access in this instance requires US citizenship.

Minimum Education: Bachelor of Science Degree in Computer Science, Computer Engineering or similar Engineering discipline

10+ years of experience

Demonstrated ability to assume leadership roles on project tasks

Demonstrated ability to mentor junior level engineers

Experience in modeling and simulations architecture and development

Experience with all phases of software QA including unit, acceptance, regression and cross-platform testing

Experience with C++ using the C11 standard

Experience with Object Oriented Architecture and Design

Development experience with IDEs (VisualStudio, NetBeans, Eclipse), debuggers and performance tools

Knowledge or experience in multi-threading (POSIX, OpenMP, MPI), SSE or GPU programming

Experience with version-control software (Git, Subversion, Mercurial) and configuration management tools (Jira, Bugzilla)

Experience working within an Agile development team PREFERRED QUALIFICATIONS / SKILLS

Familiarity with MATLAB scripting and Simulink

Experience with scripting languages (Perl, Python, BASH)

Familiarity with NGTS, AFSIM, ITASE

Familiarity with DIS, HLA, TENA interoperability standards RESPONSIBILITIES

Assist in the design, development, test, and verification of SEG's missile trajectory and RF signature prediction simulations;

The position covers the whole of the software development process, from design and implementation to testing, documentation and delivery;

Lead team(s) on individual projects and provide assistance to junior level engineers;

Provide C++ software development and maintenance with software integration testing;

Participate in Agile style development ceremonies such as Daily Standups, Sprint Planning and Sprint Reviews

Quickly adapt to new technologies and skill as required #CJ

Responsibilities

  • Assist in the design, development, test, and verification of SEG's missile trajectory and RF signature prediction simulations
  • Cover the whole of the software development process, from design and implementation to testing, documentation and delivery
  • Lead team(s) on individual projects and provide assistance to junior level engineers
  • Provide C++ software development and maintenance with software integration testing
  • Participate in Agile style development ceremonies such as Daily Standups, Sprint Planning and Sprint Reviews

Qualifications

  • Must have or be able to obtain a DoD security clearance at the required level
  • Minimum Education: Bachelor of Science Degree in Computer Science, Computer Engineering or similar Engineering discipline
  • 10+ years of experience
  • Demonstrated ability to assume leadership roles on project tasks
  • Demonstrated ability to mentor junior level engineers
  • Experience in modeling and simulations architecture and development
  • Experience with all phases of software QA including unit, acceptance, regression and cross-platform testing
  • Experience with C++ using the C11 standard

Skills mentioned

C++PythonMATLABSoftware TestingUnit TestingIntegration TestingPerformance OptimizationGitDebuggingMultithreading

About Astrion

Astrion provides integrated technology solutions and services for defense, homeland security, intelligence, and space missions. With our “always on” approach, relentless pursuit of bold ideas, and unmatched execution, we work alongside our customers—even in the most demanding environments—to deliver results with impact. From cyber and software to systems engineering and mission support, our team brings the expertise, agility, and drive needed to meet the moment and shape the future.

Defense and Space Manufacturing5,001-10,000 employeesHuntsville, Alabama