Application Software Engineer

Koitecc Solutions; San Diego (CA); On-site; USD 87,000 - 157,000; Full time

Benefits offered by this job

Paid Time Off

11 paid holidays

401K with company match

Flexible schedules

Education and training support

Parental paid leave

Job summary

Leidos is seeking an Applications Software Engineer in the INTEL Sector's Cyber & Analytics Business Area (CABA) to contribute to secure, scalable software in a Scrum environment.

The role covers web services, full stack development, and persistent data layers with emphasis on secure coding, SOLID principles, and CI/test automation. Collaboration across software, systems, and QA teams is essential to deliver mission-critical solutions.

Qualifications

• BS Degree in Computer Science or equivalent; 4+ years of relevant experience preferred
• Active Secret Clearance required
• Experience with web-based HTML/CSS/JS in web environments
• Experience with Scrum/Agile methodologies (SAFe, XP)
• Experience with UI frameworks (AngularJS, Ionic, React)
• Experience with automated testing tools (Selenium, Cucumber, Gherkin, BDD)
• Experience with Test Driven Development (TDD)
• Strong teamwork and communication skills
• Security certification per DoD 8570 (Security+) within 90 days

Responsibilities

• Work on web service and full stack development
• Implement secure software using SOLID principles
• Collaborate with engineers, QA, and operations in Agile framework
• Promote Test Driven Development practices
• Ensure interfaces meet requirements and security standards

Skills

HTML/CSS/JS

Scrum/ Agile

Secure coding

Communication skills

Education

BS in CS or equivalent

Security+ (DoD 8570)

Tools

AngularJS

Ionic

GWT

SmartGWT

Qt

React

Node.js

REST

SOAP

AWS

Git

Jenkins

SonarQube

JUnit

Job description

Leidos has a new and exciting opportunity for a Applications Software Engineer in our INTEL Sector's 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

September 2, 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.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

Securing Your Data

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system - never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at [e-mail].

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.