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Le'Fant LLC

Full Stack Developer

Le'Fant LLC

Full Stack Developer designing, developing, and maintaining custom software applications for Le'Fant, specializing in federal government consulting services. Collaborating with teams throughout the software development life cycle while mentoring junior members.

Posted 7/10/2026full-timeAshburn • Virginia • 🇺🇸 United StatesSeniorLead💰 $75,000 - $120,000 per yearWebsite

Core Competencies

Role fit
Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates extensive experience in software design, development, and implementation, particularly in a Windows environment, with a strong focus on Java, C#, and modern frameworks. Capable of mentoring junior team members and contributing to all phases of the software development life cycle while providing innovative solutions to complex technical challenges.

Highest-signal resume keywords
Java DevelopmentC# (.NET Core) DevelopmentPostgreSQL Database ManagementSpring Boot FrameworkAngular / React Development

ATS Keywords

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Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills
Software DesignSoftware DevelopmentImplementationAPI IntegrationMicroservices ArchitectureCode Quality PracticesUser Interface DevelopmentConcurrent Development WorkflowsSource Code Control (Git)Database Applications
Soft Skills
CollaborationMentoringProblem SolvingInnovative ThinkingCommunication
Tools & Technologies
HibernateSpring MVCWindows EnvironmentGit
Industry Keywords
Software Development Life CycleCBP Background InvestigationU.S. CitizenshipComputer Science DegreeInformation Management Systems

Tech Stack

Tools & technologies
AngularHibernateJava.NETPostgresReactSDLCSpringSpring BootSpringBoot

About the role

Key responsibilities & impact
  • Design, develop, and maintain custom software and database applications for both legacy and modernized systems
  • Work collaboratively on a product team
  • Contribute to all phases of the software development life cycle
  • Support code quality practices and mentor junior team members
  • Provide innovative solutions to complex technical problems
  • Actively participate in release and sprint planning, testing, and retrospectives

Requirements

What you’ll need
  • Must be a U.S. citizen
  • Ability to pass CBP background investigation
  • College degree (B.S.) in Computer Science, Software Engineering, Information Management Systems or a related discipline OR equivalent professional experience
  • At least seven (7) years related technical experience in software design, development and implementation in a Windows Environment
  • Demonstrated professional experience with Java / C# (.NET Core), Hibernate, PostgreSQL, Spring MVC, Spring Boot, Angular / React
  • Ability to implement new features by transforming mockups into fully functional user interfaces integrated with API enabled microservice built on Spring-boot/Java or C# (.NET Core) based backend
  • Experience with source code control systems and concurrent development workflows (Git preferred)

Benefits

Comp & perks
  • 40lK matching
  • Customized health plans
  • Dental and vision insurance
  • Life insurance
  • Short and long term disability coverage
  • Incentives program to recognize exceptional behavior
  • Competitive base salaries