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Back End Software Engineer - Java/Python
Back End Software Engineer - Java/PythonCastellum Inc • Alexandria, Virginia, United States
Back End Software Engineer - Java / Python

Back End Software Engineer - Java / Python

Castellum Inc • Alexandria, Virginia, United States
[job_card.variable_days_ago]
[job_preview.job_type]
  • [job_card.full_time]
[job_card.job_description]

Salary : $90,000 - 103,000 per year

Requirements :

  • Active TS / SCI security clearance (mandatory)
  • Certified Secure Software Lifecycle Professional (CSSLP) certification
  • High School Diploma or GED with at least 7 years of experience as a Software Engineer, or a Bachelor’s degree with a minimum of 3 years of experience in the same field
  • Experience in developing secure back-end software within classified or regulated settings
  • Familiarity with programming languages such as Ruby, Python, C#, Java, or PowerShell (preferred)
  • Experience across diverse operating systems, including Linux and Windows (preferred)
  • Windows Computing Environment (CE) experience (preferred)
  • Certification in Linux and / or Windows Computing Environment (CE) (preferred)
  • DoD 8570 IAT Level II certification or higher (e.g., CCNA Security, CySA+, GICSP, GSEC, Security+ CE, CND, SSCP) (preferred)

Responsibilities :

  • Design, develop, test, and maintain secure back-end software systems
  • Support secure software development lifecycle (SSDLC) processes and industry best practices
  • Create and maintain APIs, services, and application logic to support mission-critical systems
  • Collaborate with cross-functional teams including security, operations, and systems engineers
  • Diagnose, troubleshoot, and enhance back-end services in both Linux and Windows environments
  • Ensure that software adheres to government security and compliance standards
  • Document system designs, coding practices, and technical procedures
  • Technologies :
  • C#
  • Support
  • Java
  • Linux
  • PowerShell
  • Python
  • Ruby
  • Security
  • Windows
  • Backend
  • More :

    We are Corvus Consulting, LLC., looking to hire a CSD Back End Software Engineer to aid our government client in secure software development initiatives. This position emphasizes the design, development, and upkeep of back-end systems pivotal for mission-critical and classified contexts. We value strong software engineering principles, diverse operating system experience, and adhere strictly to necessary certifications. We offer a collaborative work environment and are dedicated to equal employment opportunities for all individuals.

    last updated 1 week of 2026

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