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Software Engineer C# - Careers at Leidos

Leidos

Software Engineer C# - Careers at Leidos

full-timePosted: Feb 3, 2026

Job Description

Join Leidos Security Enterprise Solutions as a Software Engineer C#

Leidos is seeking a talented Software Engineer (C#) for our Security Enterprise Solutions (SES) business unit in Vista, CA. SES designs and manufactures advanced security equipment for border crossings, airports, seaports, and transportation hubs—including radiation detectors, X-ray scanners, and CT explosives detection systems. Help update designs and introduce novel products that enhance global travel and trade safety, health, and efficiency.

Key Responsibilities

  • Develop and maintain C# services, simulators, and diagnostics using WPF and Blazor.
  • Collaborate with cross-functional teams on best practices, Agile processes, TDD, and CI.
  • Ensure security compliance, OOD principles for maintainable code, and integration with engineering/scientist teams.
  • Troubleshoot issues, innovate with best practices, and report progress effectively.

Required Qualifications

  • BS + 2+ years or Masters + <2 years experience (or equivalent).
  • US citizenship for Public Trust; C# production experience; OOD, Agile/TDD/CI knowledge.
  • Documentation, troubleshooting, communication skills; hybrid schedule; <10% travel.

Desired Skills

  • AI tools, security standards, Git, multi-threading, TCP/IP, Docker, C++, SQL, embedded/RTOS/PLC, image processing.

Local to Vista, CA preferred for hybrid work. Explore SES at Leidos SES and Security Detection. Leidos values unique contributors—apply to innovate in security technology.

Locations

  • Vista, California, United States

Salary

69,550 - 125,725 USD / yearly

Estimated Salary Rangehigh confidence

69,550 - 125,725 USD / yearly

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

Skills Required

  • C# Programmingintermediate
  • Object-Oriented Design (OOD)intermediate
  • Agile Developmentintermediate
  • Test-Driven Development (TDD)intermediate
  • Continuous Integrationintermediate
  • WPFintermediate
  • Blazorintermediate
  • Gitintermediate
  • Multi-threadingintermediate
  • TCP/IP Networkingintermediate
  • Dockerintermediate
  • Visual Studiointermediate
  • C++intermediate
  • SQL Serverintermediate
  • Embedded Systemsintermediate

Required Qualifications

  • BS Degree and 2+ years experience or Masters with <2 years; experience may substitute (experience)
  • US Citizenship for Public Trust clearance (experience)
  • Production C# development experience (experience)
  • Strong OOD principles knowledge (experience)
  • Agile/TDD/CI familiarity (experience)
  • Technical documentation skills (experience)
  • Troubleshooting expertise (experience)
  • Cross-functional team collaboration (experience)
  • Willingness to travel abroad (<10%) (experience)

Responsibilities

  • Design, develop, test, and maintain C# services, simulators, diagnostics (WPF/Blazor)
  • Collaborate on best practices, coding standards, and productivity tools
  • Ensure software security compliance and reusable codebase
  • Apply Agile, TDD, Continuous Integration for high-quality code
  • Work with Electrical/Mechanical Engineers and Scientists on requirements
  • Troubleshoot issues under senior guidance
  • Research and integrate innovative solutions
  • Communicate effectively in team environment
  • Report project status to management

Benefits

  • general: Hybrid schedule (3 days remote, 2 days onsite)
  • general: Competitive salary $69,550 - $125,725
  • general: Opportunity to work on cutting-edge security detection products
  • general: Cross-functional team collaboration
  • general: Professional growth with senior engineers
  • general: Contribution to global travel/trade safety
  • general: Public Trust clearance eligibility
  • general: Minimal international travel (<10%)
  • general: Leidos career development resources

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Tags & Categories

Jobs in Vista CALeidos CareersC# DeveloperSecurity TechnologyHybrid RemoteUnited States HiringEngineeringInformation TechnologySecurity

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Leidos logo

Software Engineer C# - Careers at Leidos

Leidos

Software Engineer C# - Careers at Leidos

full-timePosted: Feb 3, 2026

Job Description

Join Leidos Security Enterprise Solutions as a Software Engineer C#

Leidos is seeking a talented Software Engineer (C#) for our Security Enterprise Solutions (SES) business unit in Vista, CA. SES designs and manufactures advanced security equipment for border crossings, airports, seaports, and transportation hubs—including radiation detectors, X-ray scanners, and CT explosives detection systems. Help update designs and introduce novel products that enhance global travel and trade safety, health, and efficiency.

Key Responsibilities

  • Develop and maintain C# services, simulators, and diagnostics using WPF and Blazor.
  • Collaborate with cross-functional teams on best practices, Agile processes, TDD, and CI.
  • Ensure security compliance, OOD principles for maintainable code, and integration with engineering/scientist teams.
  • Troubleshoot issues, innovate with best practices, and report progress effectively.

Required Qualifications

  • BS + 2+ years or Masters + <2 years experience (or equivalent).
  • US citizenship for Public Trust; C# production experience; OOD, Agile/TDD/CI knowledge.
  • Documentation, troubleshooting, communication skills; hybrid schedule; <10% travel.

Desired Skills

  • AI tools, security standards, Git, multi-threading, TCP/IP, Docker, C++, SQL, embedded/RTOS/PLC, image processing.

Local to Vista, CA preferred for hybrid work. Explore SES at Leidos SES and Security Detection. Leidos values unique contributors—apply to innovate in security technology.

Locations

  • Vista, California, United States

Salary

69,550 - 125,725 USD / yearly

Estimated Salary Rangehigh confidence

69,550 - 125,725 USD / yearly

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

Skills Required

  • C# Programmingintermediate
  • Object-Oriented Design (OOD)intermediate
  • Agile Developmentintermediate
  • Test-Driven Development (TDD)intermediate
  • Continuous Integrationintermediate
  • WPFintermediate
  • Blazorintermediate
  • Gitintermediate
  • Multi-threadingintermediate
  • TCP/IP Networkingintermediate
  • Dockerintermediate
  • Visual Studiointermediate
  • C++intermediate
  • SQL Serverintermediate
  • Embedded Systemsintermediate

Required Qualifications

  • BS Degree and 2+ years experience or Masters with <2 years; experience may substitute (experience)
  • US Citizenship for Public Trust clearance (experience)
  • Production C# development experience (experience)
  • Strong OOD principles knowledge (experience)
  • Agile/TDD/CI familiarity (experience)
  • Technical documentation skills (experience)
  • Troubleshooting expertise (experience)
  • Cross-functional team collaboration (experience)
  • Willingness to travel abroad (<10%) (experience)

Responsibilities

  • Design, develop, test, and maintain C# services, simulators, diagnostics (WPF/Blazor)
  • Collaborate on best practices, coding standards, and productivity tools
  • Ensure software security compliance and reusable codebase
  • Apply Agile, TDD, Continuous Integration for high-quality code
  • Work with Electrical/Mechanical Engineers and Scientists on requirements
  • Troubleshoot issues under senior guidance
  • Research and integrate innovative solutions
  • Communicate effectively in team environment
  • Report project status to management

Benefits

  • general: Hybrid schedule (3 days remote, 2 days onsite)
  • general: Competitive salary $69,550 - $125,725
  • general: Opportunity to work on cutting-edge security detection products
  • general: Cross-functional team collaboration
  • general: Professional growth with senior engineers
  • general: Contribution to global travel/trade safety
  • general: Public Trust clearance eligibility
  • general: Minimal international travel (<10%)
  • general: Leidos career development resources

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

Get personalized recommendations to optimize your resume specifically for Software Engineer C# - 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 C# - 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 Vista CALeidos CareersC# DeveloperSecurity TechnologyHybrid RemoteUnited States HiringEngineeringInformation TechnologySecurity

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

Quiz Challenge
10 Questions
~2 Minutes
Instant Score

Related Books and Jobs

No related jobs found at the moment.