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Software Engineer - UML Modeler - Careers at Leidos

Leidos

Software Engineer - UML Modeler - Careers at Leidos

full-timePosted: Feb 3, 2026

Job Description

Make an Impact with Leidos in National Security

Leidos National Security Sector seeks a skilled Software Engineer - UML Modeler for the Integrated Tactical Warning/Attack Assessment (ITW/AA) and Missile Defense missions in Colorado Springs, CO. Reporting to the Chief Architect, you'll drive model-based systems engineering (MBSE), software modernization, and deployment to Cheyenne Mountain. Join a team pioneering data integration, fusion, analytics, mining, predictive tools, visualization, and decision support in a fast-paced DoD environment.

Primary Responsibilities

  • Document and communicate proposed software solutions across integrated engineering teams.
  • Stay current with state-of-the-art programming and technologies.
  • Lead software design and code reviews for quality and skill enhancement.
  • Create solutions using industry standards like UML Class and Sequence Diagrams for modular patterns.
  • Redesign monolithic components for containerization and compliance.
  • Collaborate with System Engineering for customer demonstrations and third-party regression fixes.

Required Qualifications

  • Bachelor’s in Software Engineering or related field + 4+ years experience (substitutable with training/certifications).
  • US Citizen with active DoD Secret clearance.
  • Proven C++ and Java experience.
  • UML/SysML modeling tool proficiency.
  • Agile processes and team collaboration expertise.

Preferred Qualifications

  • Master’s degree.
  • Missile warning/defense domain knowledge and message types.
  • Monolithic app breakdown for containerization and performance optimization.
  • Superior multitasking and communication skills.

Leidos outthinks, outbuilds, and outpaces the status quo. If you thrive in high-stakes innovation, apply now for this full-time, mid-level role. Pay Range: $87,100 - $157,450 USD/year. EIO 2024.

Locations

  • Colorado Springs, Colorado, United States

Salary

87,100 - 157,450 USD / yearly

Estimated Salary Rangehigh confidence

87,100 - 157,450 USD / yearly

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

Skills Required

  • C++ programmingintermediate
  • Java programmingintermediate
  • UML modelingintermediate
  • SysML modelingintermediate
  • Agile software developmentintermediate
  • Containerizationintermediate
  • Modular design patternsintermediate
  • Software architectureintermediate

Required Qualifications

  • Bachelor’s degree in Software Engineering or related discipline with 4+ years of relevant experience (experience)
  • Active DoD Secret security clearance (US Citizen required) (experience)
  • Experience with UML and SysML modeling tools (experience)
  • Strong independent and collaborative engineering skills (experience)

Responsibilities

  • Document and communicate software solutions with cross-functional teams
  • Develop Class and Sequence Diagrams in UML for modular design
  • Redesign software components for containerization
  • Identify and resolve non-compliant modular components with developers and customers
  • Participate in design/code reviews and Agile processes
  • Work with System Engineering on demonstrations and third-party stakeholders

Benefits

  • general: Competitive salary range $87,100 - $157,450
  • general: Mission-critical national security work at Cheyenne Mountain
  • general: Professional growth in cutting-edge data analytics and MBSE
  • general: Collaboration with top engineers and Chief Architect
  • general: Comprehensive Leidos benefits including health, retirement, and PTO

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Jobs in Colorado Springs, COLeidos CareersDefense IT jobsSoftware Engineering United StatesNational Security hiringEngineeringInformation TechnologySecurity

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Leidos logo

Software Engineer - UML Modeler - Careers at Leidos

Leidos

Software Engineer - UML Modeler - Careers at Leidos

full-timePosted: Feb 3, 2026

Job Description

Make an Impact with Leidos in National Security

Leidos National Security Sector seeks a skilled Software Engineer - UML Modeler for the Integrated Tactical Warning/Attack Assessment (ITW/AA) and Missile Defense missions in Colorado Springs, CO. Reporting to the Chief Architect, you'll drive model-based systems engineering (MBSE), software modernization, and deployment to Cheyenne Mountain. Join a team pioneering data integration, fusion, analytics, mining, predictive tools, visualization, and decision support in a fast-paced DoD environment.

Primary Responsibilities

  • Document and communicate proposed software solutions across integrated engineering teams.
  • Stay current with state-of-the-art programming and technologies.
  • Lead software design and code reviews for quality and skill enhancement.
  • Create solutions using industry standards like UML Class and Sequence Diagrams for modular patterns.
  • Redesign monolithic components for containerization and compliance.
  • Collaborate with System Engineering for customer demonstrations and third-party regression fixes.

Required Qualifications

  • Bachelor’s in Software Engineering or related field + 4+ years experience (substitutable with training/certifications).
  • US Citizen with active DoD Secret clearance.
  • Proven C++ and Java experience.
  • UML/SysML modeling tool proficiency.
  • Agile processes and team collaboration expertise.

Preferred Qualifications

  • Master’s degree.
  • Missile warning/defense domain knowledge and message types.
  • Monolithic app breakdown for containerization and performance optimization.
  • Superior multitasking and communication skills.

Leidos outthinks, outbuilds, and outpaces the status quo. If you thrive in high-stakes innovation, apply now for this full-time, mid-level role. Pay Range: $87,100 - $157,450 USD/year. EIO 2024.

Locations

  • Colorado Springs, Colorado, United States

Salary

87,100 - 157,450 USD / yearly

Estimated Salary Rangehigh confidence

87,100 - 157,450 USD / yearly

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

Skills Required

  • C++ programmingintermediate
  • Java programmingintermediate
  • UML modelingintermediate
  • SysML modelingintermediate
  • Agile software developmentintermediate
  • Containerizationintermediate
  • Modular design patternsintermediate
  • Software architectureintermediate

Required Qualifications

  • Bachelor’s degree in Software Engineering or related discipline with 4+ years of relevant experience (experience)
  • Active DoD Secret security clearance (US Citizen required) (experience)
  • Experience with UML and SysML modeling tools (experience)
  • Strong independent and collaborative engineering skills (experience)

Responsibilities

  • Document and communicate software solutions with cross-functional teams
  • Develop Class and Sequence Diagrams in UML for modular design
  • Redesign software components for containerization
  • Identify and resolve non-compliant modular components with developers and customers
  • Participate in design/code reviews and Agile processes
  • Work with System Engineering on demonstrations and third-party stakeholders

Benefits

  • general: Competitive salary range $87,100 - $157,450
  • general: Mission-critical national security work at Cheyenne Mountain
  • general: Professional growth in cutting-edge data analytics and MBSE
  • general: Collaboration with top engineers and Chief Architect
  • general: Comprehensive Leidos benefits including health, retirement, and PTO

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

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

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

Check Your ATS Score for "Software Engineer - UML Modeler - 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 Colorado Springs, COLeidos CareersDefense IT jobsSoftware Engineering United StatesNational Security hiringEngineeringInformation TechnologySecurity

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

Quiz Challenge
10 Questions
~2 Minutes
Instant Score

Related Books and Jobs

No related jobs found at the moment.