Leidos Logo

Leidos

Application Software Engineer

Posted Yesterday
Be an Early Applicant
In-Office
San Diego, CA
87K-157K Annually
Mid level
In-Office
San Diego, CA
87K-157K Annually
Mid level
Develop full‑stack web applications and web services for cybersecurity and cryptographic key management in an Agile Scrum team. Apply secure software development principles, TDD, automated testing, and CI practices; collaborate with engineers and QA to produce maintainable, secure, and fault‑tolerant code.
The summary above was generated by AI

Leidos has a new and exciting opportunity for a Applications Software Engineer in our National Security Sector's (NSS) Cyber & Analytics Business Area (CABA).  Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more.  Join us and make a difference in National Security!  

PROGRAM SUMMARY:

Product development includes tactical mobile development as well as enterprise web application development.  The portfolio of products support the Cybersecurity and Information Assurance domains.  These systems deploy a variety of technologies and communicate with infrastructure interfaces to bring secure, modern-day Cybersecurity and Cryptographic Key Management solutions to the warfighter.

Primary Responsibilities:

The successful candidate will work on a mix of web service development, full stack web application development and robust persistence layer implementations in an Agile Scrum environment.  This involves the use of Themes, Epics, User Stories, acceptance criteria and other system engineering artifacts as part of an Agile team.  He/she will use a variety of software engineering best practices and clean coding techniques to ensure that developed code is maintainable, efficient, reliable, understandable, secure, fault tolerant and meets S.O.L.I.D coding principles.  

The candidate will be knowledgeable about (and apply) secure software development principles and techniques.  He/she will use software tools in cooperation with continuous integration and test automation management process and understand software components and their interface requirements.  The candidate will interface with software engineers, system engineers, information assurance engineers, test engineers, quality assurance, and other project team members.  He/she will be responsible for setting the standards and helping the team adopt and adhere to Test Driven Development (TDD) practices within the Leidos Agile Framework to ensure the proper degree of engineering rigor is applied to all assigned tasks.

Basic Qualifications:

  • BS Degree in Computer Science or equivalent and 4+ years of relevant experience. Will consider experience in lieu of a degree.

  • Active Secret Clearance (Required)

  • Experience with web-based (HTML, CSS, JavaScript) in a web-based environment

  • Experience in Scrum Methodology or other Agile environments (e.g., SAFe, XP)

  • Experience with UI / Development Frameworks (E.g, AngularJS, Ionic, GWT, SmartGWT, Qt, React, Node.js)

  • Experience with Automated Testing Tools/Technologies/Concepts (Selenium, Cucumber, Gherkin, BDD)

  • Experience with Test Driven Development (TDD)

  • Works well in a team environment and has excellent written and communication skills

  • DoD 8570 approved security certification (i.e., Security +) (Will be required 90 days after hire).

Preferred Qualifications:

  • Experience with Web Services Architectures (REST, SOAP, AWS)

  • Experience with Software CM (e.g., Git, GitHub)

  • Experience with Continuous Integration / Quality, and DevOps concepts and tools / technologies (e.g., Ant / Maven, Jenkins, SonarQube, FishEye, Crucible, Gradle, Junit)

  • Experience with Security Scanning  (HP Fortify, HP WebInspect)

  • Experience with Build Scripts (e.g., Maven, ANT)

  • Experience with Mobile Application Development

  • Experience with Agile Management Tools and Concepts (e.g., VersionOne, JIRA, Rally, etc.)

  • Experience with Web Server Configuration (e.g., JBOSS, Wildfly, Tomcat)

  • Experience with Database Development (e.g., Postgres, SQL Server, MySQL, SQLite, Oracle)

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:June 26, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:Pay Range $87,100.00 - $157,450.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Similar Jobs

9 Hours Ago
In-Office
165K-230K Annually
Senior level
165K-230K Annually
Senior level
Aerospace • Other
Build, operate, and scale mission-critical application platforms to accelerate vehicle software delivery. Manage infrastructure as code, improve observability, collaborate with developers, run on-call rotations, conduct blameless postmortems, and reduce performance bottlenecks to support Falcon, Starship, Dragon, and Starlink software lifecycles.
Top Skills: AnsibleBazelBuckC#C++ClickhouseDockerJavaScriptKubernetesKvmLinuxMakeMySQLPostgresPuppetPythonQemuTerraformVsphere
9 Hours Ago
In-Office
Palo Alto, CA, USA
135K-185K Annually
Junior
135K-185K Annually
Junior
Aerospace • Other
Design, build, and maintain mission-critical full-stack applications used across SpaceX. Own architecture, prototyping, performance profiling, testing, CI/CD, deployment, and close collaboration with cross-functional teams to support launches and Starlink operations.
Top Skills: ActivemqAngularAnsibleApache KafkaBazelBuckC#.NetContinuous DeliveryContinuous IntegrationDockerGoGradleJavaKubernetesMakeNpmPantsPipPostgresPuppetPythonRabbitMQReactScalaSQL ServerTerraformUnix-Like OsVersion Control (Git)
5 Days Ago
In-Office or Remote
San Francisco, CA, USA
Expert/Leader
Expert/Leader
Artificial Intelligence • Information Technology • Software • Automation
Lead technical vision and initiatives as a principal engineer: manage teams or drive cross-team technical projects, mentor engineers, research and evangelize new frameworks, and build full-stack applications using React/Next.js/Prisma, backend languages (Node, Python, Ruby), and relational databases (MySQL/PostgreSQL). Collaborate with Product Managers to define large project specifications.
Top Skills: DjangoFlaskMySQLNext.JsNode.jsPostgresPrismaPythonReactRuby On RailsSymfony

What you need to know about the San Francisco Tech Scene

San Francisco and the surrounding Bay Area attracts more startup funding than any other region in the world. Home to Stanford University and UC Berkeley, leading VC firms and several of the world’s most valuable companies, the Bay Area is the place to go for anyone looking to make it big in the tech industry. That said, San Francisco has a lot to offer beyond technology thanks to a thriving art and music scene, excellent food and a short drive to several of the country’s most beautiful recreational areas.

Key Facts About San Francisco Tech

  • Number of Tech Workers: 365,500; 13.9% of overall workforce (2024 CompTIA survey)
  • Major Tech Employers: Google, Apple, Salesforce, Meta
  • Key Industries: Artificial intelligence, cloud computing, fintech, consumer technology, software
  • Funding Landscape: $50.5 billion in venture capital funding in 2024 (Pitchbook)
  • Notable Investors: Sequoia Capital, Andreessen Horowitz, Bessemer Venture Partners, Greylock Partners, Khosla Ventures, Kleiner Perkins
  • Research Centers and Universities: Stanford University; University of California, Berkeley; University of San Francisco; Santa Clara University; Ames Research Center; Center for AI Safety; California Institute for Regenerative Medicine

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account