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3B Staffing LLC Logo
Senior Full Stack Engineer

3B Staffing LLC

 

McLean, VA, USA

Posted On: 30+ days ago
Experience: 5+ years
Availability: Hybrid
Openings: 2
Category: Senior Full Stack Engineer
Tenure: No Preference/Any
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Description

Job Description

Responsibilities

  • End-to-end software development including analysis, planning, architecture, design, development, automated testing, deployment, and maintenance using industry best practices and security standards.
  • Performance optimization - analyze system performance, identify bottlenecks, and implement solutions to enhance application efficiency and scalability.
  • Collaborative solution delivery - partner with business stakeholders to gather requirements, leverage proof of concepts for technical decisions, and implement solutions with cross-functional teams.
  • Production support and maintenance - support applications across environments, resolve critical issues, and fulfill ad-hoc requests to ensure seamless business operations.

Required Qualifications

  • 5+ years of professional software development experience.
  • Strong proficiency in Java (Java 8 or above) including I/O, Multithreading, Collections, Generics, Lambda.
  • Strong database skills with very good understanding of RDBMS (MS SQL or PostgreSQL) and ability to write advanced SQL queries with thorough understanding of JOINs and performance tuning.
  • Experience with Gen AI tools and AI Coding Agents (e.g., Claude Code, Codex).
  • Experience using at least one Coding Agent enabled IDE (e.g., VSCode, Amazon Kiro).
  • Strong analytical skills and ability to communicate ideas effectively.
  • Open minded and motivated team player.
  • Proficiency working with Docker containers and understanding of application lifecycle management.
  • Ability to use a CI/CD pipeline (e.g., JIRA, Jenkins) to deploy applications.
  • REST API Web Services and GraphQL API query language.
  • Strong proficiency in Spring Core, MVC, Spring Boot, Spring Security, Spring Data JPA, Dependency Injection, DAO, JTA, JDBC.
  • Proficiency in HTML, JavaScript, CSS, jQuery, Angular 9 or above.
  • Experience with Apache Tomcat, Jetty Server.
  • Experience with Maven, Gradle, JUnit/Mockito, Cucumber.
  • Knowledge of Design Patterns like MVC, Singleton, Session, Facade, Factory, DAO, DTO.
  • Proficiency in XML technologies and XML parsers, as well as JSON technologies.
  • Experience with ORM framework Hibernate.
  • Experience with streaming technology Kafka.
  • Experience with AWS EKS

Education

Any Graduate

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