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3B Staffing LLC Logo
Senior Full Stack Engineer

3B Staffing LLC

 

McLean, VA, USA

Posted On: 15+ days ago
Experience: 5+ years
Availability: Onsite
Openings: 2
Category: Senior Full Stack Engineer
Tenure: No Preference/Any
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Description

You will own the full software development lifecycle, from architecture and design to deployment, testing, and maintenance. You will optimize system performance, resolve production issues, and deliver collaborative solutions with business stakeholders.

This role is on-site.

Responsibilities

  • Lead end-to-end software development including analysis, architecture, coding, automated testing, and deployment using security standards.
  • Analyze system performance, identify bottlenecks, and implement solutions to enhance application efficiency and scalability.
  • Partner with business stakeholders to gather requirements, leverage proof of concepts for technical decisions, and implement solutions with cross-functional teams.
  • Support applications across environments, resolve critical issues, and fulfill ad-hoc requests to ensure seamless business operations.

Required Skills

  • 5+ years of professional software development experience.
  • Strong proficiency in Java (8+), including I/O, Multithreading, Collections, Generics, and Lambda.
  • Strong database skills with RDBMS (MS SQL or PostgreSQL), advanced SQL queries, JOINs, and performance tuning.
  • Proficiency in Spring Core, MVC, Boot, Security, Data JPA, Dependency Injection, DAO, JTA, and JDBC.
  • Experience with HTML, JavaScript, CSS, jQuery, and Angular 9+.
  • Experience using Gen AI tools and AI Coding Agents (e.g., Claude Code, Codex) and Coding Agent enabled IDEs (e.g., VSCode, Amazon Kiro).
  • Proficiency in Docker containers and application lifecycle management.
  • Experience with CI/CD pipelines (JIRA, Jenkins) and REST/GraphQL APIs.
  • Knowledge of Design Patterns (MVC, Singleton, Facade, Factory, DAO, DTO), Hibernate ORM, Kafka streaming, AWS EKS, and Maven/Gradle.

Education

Any Graduate

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