✦ Luna Orbit — Software Engineering

Senior Software Engineer

at Leidos Holdings

📍 Gaithersburg, MD Unknown 💰 $107K – $195K USD / year Posted March 13, 2026
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Position Details

Salary $107K – $195K USD / year
Type Not Specified
Experience senior
Exp. Years 8-12 years
Education Bachelor's degree in Computer Science, Software Engineering, or related field
Category Software Engineering

About this role

This role involves developing secure, scalable software solutions for defense and intelligence applications, utilizing full-stack development, cloud-native methodologies, and security protocols.

Key Responsibilities

  • Design and develop scalable software
  • Implement RESTful services
  • Troubleshoot and optimize applications
  • Collaborate on technical design
  • Ensure compliance with security standards

Technical Overview

The position requires expertise in object-oriented programming, REST API development, Linux environments, and agile practices, supporting high-security defense projects.

Ideal Candidate

The ideal candidate is a senior software engineer with 8+ years of experience in object-oriented development, REST API design, and Linux environments, holding a Top Secret security clearance with SCI eligibility, capable of working independently and collaboratively on complex defense software projects.

Must-Have Skills

Object-Oriented ProgrammingREST API developmentDatabase developmentLinux environmentsAgile methodologies

Nice-to-Have Skills

DevSecOpsCloud-native developmentFull-Stack experienceSecurity clearance

Tools & Platforms

LinuxCloud platformsGitJira

Required Skills

Object-Oriented ProgrammingREST APISQLDatabase developmentLinuxTroubleshootingAgileDevSecOpsCloud-nativeJavaPythonFull-Stack DevelopmentCode reviewEngineering standards

Hard Skills

Object-Oriented ProgrammingOOPREST APIRESTful servicesSQLDatabase developmentLinuxLinux environmentsTroubleshootingAgileDevSecOpsCloud-nativeJavaPythonSoftware designFull-Stack DevelopmentCode reviewEngineering standards

Soft Skills

independent workcollaborationproblem-solvingcommunicationadaptability

Certifications

Required

Top Secret security clearance

Preferred

SCI accessPolygraph

Industry & Role

Industry Defense, Intelligence, Cybersecurity
Job Function Develop secure, scalable software solutions for defense and intelligence missions

Clearance & Visa

Clearance Required Top Secret with ability to obtain SCI and Polygraph

Keywords for Your Resume

Object-Oriented ProgrammingOOPREST APIRESTful servicesSQLDatabase developmentLinuxLinux environmentsTroubleshootingAgileDevSecOpsCloud-nativeJavaPythonFull-Stack DevelopmentCode reviewEngineering standardsSecurity clearanceSCIPolygraph

Deal Breakers

Lack of security clearance, No experience with REST API or Linux environments, Less than 6 years of relevant experience, Unwillingness to work in the specified location

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