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Expert Software Engineer - Careers at Leidos

Leidos

Expert Software Engineer - Careers at Leidos

full-timePosted: Feb 3, 2026

Job Description

Expert Software Engineer

Join Leidos on a 200+ FTE program delivering cutting-edge software solutions in Chantilly, VA. As an Expert Software Engineer, you'll provide development engineering, programming support, and infrastructure maintenance for mission-critical systems.

Key Responsibilities

  • Design database architectures and develop comprehensive unit/functional test plans.
  • Maintain operational systems, modify software for error correction, hardware adaptation, and performance optimization.
  • Analyze user needs and requirements to ensure feasible designs within time/cost constraints.
  • Consult with customers on software design/maintenance, coordinate installations, and monitor specifications.
  • Develop, test, and validate software using scientific analysis and mathematical models.
  • Collaborate with analysts, engineers, and programmers on project limitations, interfaces, and performance.
  • Debug errors, conduct trial runs, and document program development with clear comments.
  • Build and maintain cloud applications, transitioning legacy systems to modern environments.

Required Qualifications

  • Active TS/SCI with Polygraph.
  • BS + 12 years experience (or equivalent).
  • Proficiency in Java, JavaScript, Python, XML; web software management; cloud services; Windows/Unix; Git; documentation; unit/integration tests.

Desired Qualifications

  • Spring/Java expertise, PostgreSQL, Agile environments, Docker/Kubernetes, scalable architectures.
  • Team collaboration, passion for new technologies, IC customer understanding.

Leidos outthinks, outbuilds, and outpaces the status quo. If you thrive on disruption and mission impact, apply now. Pay Range: $131,300 - $237,350 USD/year. U.S. citizenship required.

Locations

  • Chantilly, Virginia, United States

Salary

131,300 - 237,350 USD / yearly

Estimated Salary Rangehigh confidence

131,300 - 237,350 USD / yearly

* This is an estimated range based on market data and may vary based on experience and qualifications.

Skills Required

  • Javaintermediate
  • JavaScriptintermediate
  • Pythonintermediate
  • XMLintermediate
  • Spring Frameworkintermediate
  • PostgreSQLintermediate
  • Gitintermediate
  • Dockerintermediate
  • Kubernetesintermediate
  • Agile Developmentintermediate
  • Cloud Servicesintermediate
  • Unit Testingintermediate
  • Integration Testingintermediate

Required Qualifications

  • Active TS/SCI with Polygraph clearance (experience)
  • BS degree + 12 years relevant experience or equivalent (experience)
  • Experience managing and developing web software (experience)
  • Experience in Windows and/or Unix environments (experience)
  • Demonstrated experience documenting code and methodologies (experience)
  • Familiarity with writing unit and integration tests (experience)

Responsibilities

  • Provide database architectural and design capabilities
  • Develop unit and functional test plans
  • Perform operations and maintenance of operational systems
  • Modify existing software to correct errors and improve performance
  • Analyze user needs and software requirements for feasibility within time and cost constraints
  • Design, develop, and maintain cloud-based applications including legacy transitions
  • Coordinate software installation, testing, validation, and documentation

Benefits

  • general: Competitive salary range $131,300 - $237,350
  • general: Comprehensive health, dental, and vision insurance
  • general: 401(k) matching and retirement plans
  • general: Professional development and tuition reimbursement
  • general: Flexible work arrangements and paid time off
  • general: Mission-driven culture with cutting-edge technology access

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Leidos logo

Expert Software Engineer - Careers at Leidos

Leidos

Expert Software Engineer - Careers at Leidos

full-timePosted: Feb 3, 2026

Job Description

Expert Software Engineer

Join Leidos on a 200+ FTE program delivering cutting-edge software solutions in Chantilly, VA. As an Expert Software Engineer, you'll provide development engineering, programming support, and infrastructure maintenance for mission-critical systems.

Key Responsibilities

  • Design database architectures and develop comprehensive unit/functional test plans.
  • Maintain operational systems, modify software for error correction, hardware adaptation, and performance optimization.
  • Analyze user needs and requirements to ensure feasible designs within time/cost constraints.
  • Consult with customers on software design/maintenance, coordinate installations, and monitor specifications.
  • Develop, test, and validate software using scientific analysis and mathematical models.
  • Collaborate with analysts, engineers, and programmers on project limitations, interfaces, and performance.
  • Debug errors, conduct trial runs, and document program development with clear comments.
  • Build and maintain cloud applications, transitioning legacy systems to modern environments.

Required Qualifications

  • Active TS/SCI with Polygraph.
  • BS + 12 years experience (or equivalent).
  • Proficiency in Java, JavaScript, Python, XML; web software management; cloud services; Windows/Unix; Git; documentation; unit/integration tests.

Desired Qualifications

  • Spring/Java expertise, PostgreSQL, Agile environments, Docker/Kubernetes, scalable architectures.
  • Team collaboration, passion for new technologies, IC customer understanding.

Leidos outthinks, outbuilds, and outpaces the status quo. If you thrive on disruption and mission impact, apply now. Pay Range: $131,300 - $237,350 USD/year. U.S. citizenship required.

Locations

  • Chantilly, Virginia, United States

Salary

131,300 - 237,350 USD / yearly

Estimated Salary Rangehigh confidence

131,300 - 237,350 USD / yearly

* This is an estimated range based on market data and may vary based on experience and qualifications.

Skills Required

  • Javaintermediate
  • JavaScriptintermediate
  • Pythonintermediate
  • XMLintermediate
  • Spring Frameworkintermediate
  • PostgreSQLintermediate
  • Gitintermediate
  • Dockerintermediate
  • Kubernetesintermediate
  • Agile Developmentintermediate
  • Cloud Servicesintermediate
  • Unit Testingintermediate
  • Integration Testingintermediate

Required Qualifications

  • Active TS/SCI with Polygraph clearance (experience)
  • BS degree + 12 years relevant experience or equivalent (experience)
  • Experience managing and developing web software (experience)
  • Experience in Windows and/or Unix environments (experience)
  • Demonstrated experience documenting code and methodologies (experience)
  • Familiarity with writing unit and integration tests (experience)

Responsibilities

  • Provide database architectural and design capabilities
  • Develop unit and functional test plans
  • Perform operations and maintenance of operational systems
  • Modify existing software to correct errors and improve performance
  • Analyze user needs and software requirements for feasibility within time and cost constraints
  • Design, develop, and maintain cloud-based applications including legacy transitions
  • Coordinate software installation, testing, validation, and documentation

Benefits

  • general: Competitive salary range $131,300 - $237,350
  • general: Comprehensive health, dental, and vision insurance
  • general: 401(k) matching and retirement plans
  • general: Professional development and tuition reimbursement
  • general: Flexible work arrangements and paid time off
  • general: Mission-driven culture with cutting-edge technology access

Target Your Resume for "Expert Software Engineer - Careers at Leidos" , Leidos

Get personalized recommendations to optimize your resume specifically for Expert Software Engineer - Careers at Leidos. Takes only 15 seconds!

AI-powered keyword optimization
Skills matching & gap analysis
Experience alignment suggestions

Check Your ATS Score for "Expert Software Engineer - Careers at Leidos" , Leidos

Find out how well your resume matches this job's requirements. Get comprehensive analysis including ATS compatibility, keyword matching, skill gaps, and personalized recommendations.

ATS compatibility check
Keyword optimization analysis
Skill matching & gap identification
Format & readability score

Tags & Categories

Jobs in Chantilly VALeidos CareersHiring in United StatesCleared Software EngineerIntelligence CommunityEngineeringInformation TechnologySecurity

Answer 10 quick questions to check your fit for Expert Software Engineer - Careers at Leidos @ Leidos.

Quiz Challenge
10 Questions
~2 Minutes
Instant Score

Related Books and Jobs

No related jobs found at the moment.