Leidos

Mid-Level Backend Software Engineer

Leidos

full-time

Posted on:

Location Type: Office

Location: GaithersburgArizonaColoradoUnited States

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Salary

💰 $87,100 - $157,450 per year

About the role

  • Design, develop, test, and maintain backend application components using Java or Python
  • Develop and maintain RESTful services to support application functionality and system integrations
  • Apply object-oriented design principles to build scalable and maintainable systems
  • Write and modify SQL queries to support application functionality and data retrieval
  • Collaborate with internal and external teams to understand data sources, formats, and access methods, and support integration into backend systems
  • Develop and troubleshoot applications within Linux-based environments
  • Implement backend logic for data transformation, processing, and system workflows
  • Identify, debug, and resolve application-level defects and performance issues
  • Follow coding standards, participate in code reviews, and support documentation efforts

Requirements

  • Bachelor’s degree in Computer Science, Software Engineering, or a related field with 4–8 years of experience; or a Master’s degree with 2–6 years of experience
  • US Citizenship
  • Active TS/SCI with the ability to successfully pass a Polygraph
  • Professional experience developing object‑oriented applications in Java or Python
  • Hands‑on experience building and maintaining RESTful APIs
  • Basic to moderate experience with SQL capability, including writing queries and working with relational databases
  • Working knowledge of Linux‑based environments
  • Ability to work independently on defined tasks within established technical frameworks and deliver reliable results
Benefits
  • competitive compensation
  • Health and Wellness programs
  • Income Protection
  • Paid Leave
  • Retirement
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
JavaPythonRESTful servicesSQLobject-oriented designLinuxdata transformationapplication debuggingperformance optimizationcoding standards
Soft Skills
collaborationindependenceproblem-solvingcommunicationattention to detail
Certifications
Bachelor’s degreeMaster’s degreeTS/SCI clearance