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Software Developer SME

Lion Federal

Chantilly · On-site Full-time Senior 1mo ago

About the role

About

Lion Federal is seeking an experienced Software Developer SME to support mission-critical systems for a federal client. This role focuses on modernizing legacy applications, building cloud-based solutions, and contributing to scalable, secure software in an Agile environment.

What You’ll Do

  • Design, develop, and maintain software applications in cloud environments (AWS)
  • Modernize and transition legacy applications to cloud-based architectures
  • Develop and maintain RESTful APIs and full-stack applications
  • Work with Java, Spring Boot, Angular (TypeScript), and Elasticsearch
  • Build and manage custom ETL processes
  • Write scripts to deploy and configure applications in EC2 environments
  • Collaborate with cross-functional teams using Agile/Scrum methodologies
  • Perform unit testing, peer code reviews, and automated testing (e.g., Selenium)
  • Support containerized and virtualized environments
  • Mentor junior developers and contribute to engineering best practices

Required Qualifications

  • Active TS/SCI with Polygraph
  • Bachelor’s degree plus 15+ years of experience (additional experience may be considered in lieu of a degree)

Strong experience with:

  • Java
  • Spring Boot
  • Angular (TypeScript)
  • Amazon Web Services (AWS)
  • Experience developing solutions based on customer requirements and specifications
  • Hands-on experience with custom ETL development
  • Familiarity with Git, Jenkins, Selenium, and Rundeck
  • Comfortable working in Linux command-line environments

Preferred Qualifications

  • Experience with identity and accessibility development practices
  • Experience with automation and testing frameworks
  • Background in containerization and modular development
  • Familiarity with UI/UX design principles
  • Full-stack development experience
  • AWS certification

Why Lion Federal

Lion Federal is a fast-growing technology company supporting U.S. federal missions through secure, modern, and scalable solutions. We value strong engineering fundamentals, collaboration, and people who enjoy solving complex technical challenges.

Benefits

We provide a performance-based compensation plan along with great additional benefits. They include:

  • 5 weeks of paid time-off
  • 11 paid holidays
  • 401(k) retirement plan with matching contribution
  • Comprehensive Health, dental, and vision insurance (100% paid by the company)
  • Direct deposit
  • Professional Development Budget

Skills

AngularAWSElasticsearchGitJavaJenkinsLinuxRundeckSeleniumSpring BootTypeScript

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