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Software Developer/SME

Chantilly, VA; Chantilly; Virginia; VA; Chantilly, Virginia; United States
Full Time On-site

Summary

Job Description

Are you interested in using your skills to help shape the Cyber, Security, & Intel space? If so, look no further. Amentum is seeking a Software Developer to join our team of passionate individuals in Chantilly or Herndon, VA . In this role you will support challenging, mission-critical projects that make a direct impact on the Nation’s security and intelligence mission.

Your Impact:

We are seeking a talented and experienced Senior Software Engineer to join our dynamic team. The ideal candidate will have over 10 years of software development experience with a strong background in multi-tiered C# .NET applications, information systems, and service-oriented architectures. The role requires proficiency in full-stack development, database design, DevOps, and the ability to mentor junior developers.

Responsibilities:

  • Lead software development projects from requirements analysis through deployment and maintenance.
  • Design and develop software solutions, employing technologies such as C#, C++, SQL Server, Microsoft Windows Server, and Linux.
  • Monitor, troubleshoot, and enhance system operations using tools like Splunk and Grafana/Prometheus.
  • Work with Jira and Confluence for agile management.
  • Produce technical documentation, including system designs, Interface Control Documents (ICDs), and operational procedures.
  • Collaborate with cross-functional teams to reverse engineer legacy codebases and produce UML models using Enterprise Architect.
  • Support secure communications systems, ensuring compliance with operational and security standards.
  • Research, prototype, and recommend improvements to existing systems and architectures.
  • Troubleshoot and resolve complex software, performance, and infrastructure issues.
  • Research and adopt emerging technologies to enhance system efficiency.

Requirements:

  • Over 10 years of hands-on software development experience.
  • Hands-on experience with secure systems engineering, systems integration, and reverse engineering.
  • Proficiency in programming languages: C#, C++, SQL.
  • Experience working with tools like JIRA, Confluence, Splunk, and Enterprise Architect.
  • Strong skills in debugging, performance optimization, and DevOps practices.
  • Background in on-call support and operational monitoring of critical systems.

Clearance Required:

  • TS/SCI w/ Poly

Minimum Education:

  • M.S. in Computer Science or equivalent (desired)
  • B.S. in Mathematics and/or Computer Science (required)

Minimum Years of Experience: 10

Preferred:

  • Understanding of Enterprise Service Bus architecture.
  • Experience with Python, Angular, JavaScript.
  • Experience with OpenShift or other container orchestration software.
  • Excellent technical writing and documentation skills.
  • Experience in collaborating with multidisciplinary teams.
  • Familiarity with high-availability systems and secure communications.
  • Experience providing Tier 3 on-call 24x7 support for critical systems.

#javelin

About Amentum

Amentum

Amentum is one of the largest government services and engineering companies supporting the U.S. military, intelligence community, and federal agencies. Headquartered in Virginia with more than 50,000 employees worldwide, Amentum delivers mission-critical support across defense, cybersecurity, engineering, logistics, intelligence, aviation, nuclear, and space operations. The company plays a major role in helping government agencies solve complex national security and infrastructure challenges.

For job seekers, Amentum offers a wide variety of career opportunities across engineering, cybersecurity, intelligence, logistics, IT, aviation maintenance, program management, and cleared government support roles. The company is especially attractive to veterans, transitioning military personnel, and security-cleared professionals looking to continue supporting national security missions while building long-term career stability. Amentum also has a strong reputation for career mobility, education support, and mission-focused work across hundreds of federal programs.

Unlike many companies focused on a single niche, Amentum supports a broad range of high-impact missions—from military readiness and intelligence operations to NASA programs, cyber modernization, and critical infrastructure support. Employees often work on programs that directly support the Department of Defense, intelligence agencies, and federal civilian missions, creating opportunities to build diverse experience while contributing to meaningful national security outcomes.

As government investment continues to grow in cyber, space, engineering, and mission modernization, Amentum remains one of the strongest employers in the government contracting sector. For professionals seeking a stable, mission-driven career with opportunities for advancement, technical growth, and meaningful impact, Amentum continues to stand out as a top employer in defense and federal services.

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