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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, and infrastructure support for mission-critical projects in a cloud-centric environment.

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 requirements to ensure feasible designs within time and cost constraints.
  • Consult with customers on software design/maintenance, coordinate installations, and monitor system performance.
  • Develop, test, and validate software using scientific analysis and mathematical models.
  • Document code, methodologies, and user manuals; collaborate with teams to resolve issues and drive efficiency.
  • Build and transition applications to cloud environments, leveraging scalable architectures.

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; testing/documentation.

Desired Qualifications

  • Spring/Java expertise, PostgreSQL, Agile, Docker/Kubernetes, IC customer understanding, passion for emerging tech.

Leidos outthinks, outbuilds, and outpaces the status quo. If you thrive in high-stakes, innovative environments, apply now. Pay Range: $131,300 - $237,350. 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 for error correction, hardware adaptation, and performance improvement
  • 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
  • Confer with analysts, engineers, and stakeholders to define project requirements and resolve issues

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: Paid time off, holidays, and flexible work options
  • general: Mission-driven culture with cutting-edge technology exposure

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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, and infrastructure support for mission-critical projects in a cloud-centric environment.

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 requirements to ensure feasible designs within time and cost constraints.
  • Consult with customers on software design/maintenance, coordinate installations, and monitor system performance.
  • Develop, test, and validate software using scientific analysis and mathematical models.
  • Document code, methodologies, and user manuals; collaborate with teams to resolve issues and drive efficiency.
  • Build and transition applications to cloud environments, leveraging scalable architectures.

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; testing/documentation.

Desired Qualifications

  • Spring/Java expertise, PostgreSQL, Agile, Docker/Kubernetes, IC customer understanding, passion for emerging tech.

Leidos outthinks, outbuilds, and outpaces the status quo. If you thrive in high-stakes, innovative environments, apply now. Pay Range: $131,300 - $237,350. 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 for error correction, hardware adaptation, and performance improvement
  • 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
  • Confer with analysts, engineers, and stakeholders to define project requirements and resolve issues

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: Paid time off, holidays, and flexible work options
  • general: Mission-driven culture with cutting-edge technology exposure

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 EngineerCloud Computing JobsEngineeringInformation 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.