Senior Software Developer - Java

Leidos; Gaithersburg (MD); On-site; USD 108,000 - 195,000; Full time

Job summary

Leidos is seeking Senior Software Developers to join the Air Traffic Business Area within the Homeland Sector, supporting next-generation flight service and air traffic systems. This role involves modernizing legacy infrastructure with scalable cloud-based platforms, improving safety and efficiency in remote aviation environments.

You will work in a Scaled Agile/SAFe environment, designing and implementing containerized applications while collaborating with systems engineering, product delivery,

Qualifications

• Bachelor's degree in Computer Science or a related field with 8–12 years of experience, or Master's with 6–10 years.
• Expert knowledge of Java with hands-on programming experience.
• Extensive Web development experience with React, HTML, CSS, JavaScript.
• Experience with unit testing tools such as JUnit and Mockito.
• RESTful API, JSON, XML, XSD experience.
• Spring Framework, Spring Security, Spring Boot experience.
• Linux experience and familiarity with Git or Subversion.

Responsibilities

• Develop software individually and in teams within an Agile environment.
• Use AI-assisted tools to accelerate coding, refactoring, debugging, and test creation.
• Develop solutions to complex issues across multiple areas.
• Participate in Agile scrum ceremonies and team activities.
• Troubleshoot and support system engineering and test teams.
• Communicate with internal and client stakeholders.

Skills

Java programming

Web development

React

HTML

CSS

JavaScript

JUnit

Mockito

RESTful APIs

JSON

XML

XSD

Spring Framework

Spring Security

Spring Boot

Linux

Git

Subversion

Eclipse

VS Code

Agile Scrum

Communication

Education

Bachelor's degree in Computer Science or related field

Master's degree with 6-10 years experience

Doctorate (optional)

Tools

Eclipse

VS Code

Git

Subversion

Job description

Description

Leidos is seeking Senior Software Developers to join the Air Traffic Business Area within the Homeland Sector, supporting the development of next-generation flight service and air traffic systems. This work aligns with the FAA's broader initiative to modernize legacy flight service capabilities, replacing aging infrastructure with scalable, cloud-based platforms designed to improve safety and operational efficiency- particularly in remote and high-dependency aviation environments. These efforts focus on delivering mission-critical, future-ready solutions that provide safety-critical flight services to the pilot community.

As a member of a Scaled Agile software development organization, you will contribute to the technical execution of a program that integrates proven, globally deployed technologies with modern cloud-native capabilities. You will work alongside cross-functional teams and technical leaders to deliver predictable outcomes in a highly regulated, safety-critical environment.

In this position, you will design and implement software solutions independently while working closely with systems engineering, product delivery, and DevSecOps teams. The primary focus is on developing containerized applications within anAgile/SAFe environment.This position supports government programs and requires the ability toobtain and maintain a favorable Public Trust investigation.

Primary Responsibilities

• Responsible for software development activities both individually and as a member of a team including writing, testing, debugging, and maintaining source code within an Agile environment.
• Use AI-assisted development tools to accelerate coding, refactoring, debugging, and test creation.
• Develop solutions to complex issues and problems that impact multiple areas or disciplines.
• Actively participate in Agile scrum ceremonies and other related team activities.
• Troubleshoot and participate in the resolution of technical issues in lab and operational environments.
• Provide support as needed for system engineering, test engineering, and system owner teams.
• Communicate with internal team members across multiple areas and client team members. May communicate with parties external to the organization.

Basic Qualifications

• Bachelor's degree in Computer Science or a related field with 8-12 years of relevant experience, or a Master's degree with 6-10 years of experience. May also possess a Doctorate.
• Expert knowledge of Java with substantial hands-on programming experience
• Extensive experience with Web development and commonly used front-end tools and languages (React, HTML, CSS, JavaScript)
• Extensive experience with unit testing tools such as Junit and Mockito
• Significant experience with RESTful API, JSON, XML, XSD
• Significant experience with Spring Framework, Spring Security, and Spring Boot
• Significant experience with Linux
• Significant experience with version control systems such as Git or Subversion
• Experience with common development tools and IDEs (Eclipse, VS Code, etc.)
• Experience working within the Agile Scrum framework
• Understanding of sound software development principles and practices
• Ability to effectively communicate verbally and in writing
• Ability to obtain SF-85 Public Trust (Tier 2) suitability determination
• US citizenship required

Preferred Qualifications

• Experience with AI-assisted coding (Claude Code, Codex etc.)
• Experience with microservices and cloud-based environments
• Knowledge of or experience with Python programming language
• Knowledge of or experience with Ansible playbooks and YAML
• Knowledge of or experience with Linux shell scriptingKnowledge of or experience with MongoDB
• Knowledge of air traffic control and flight services

ATMC

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.

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 $107,900.00 - $195,050.00

The Leidos pay range for this job level is a general guideline onlyand 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.