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Senior Back-End Engineer

3B Staffing LLC

Senior Back-End Engineer



Location: Denver, CO or NYC (On-site)

Workplace Type: On-site
GC and USC


Overview


We're looking for a talented and dedicated Senior Back-End Developer focused on low-latency, real-time application development to join a high-performing engineering team. This is a chance to work on complex, mission-critical systems in a fast-paced, high-throughput environment.

Responsibilities

  • Design, develop, test, deploy, and maintain scalable, high-performance backend applications using Java.
  • Participate in the complete software development lifecycle including design, implementation, testing, and production support.
  • Translate business and technical requirements into well-architected backend solutions.
  • Collaborate closely with global teams including product managers, architects, and other developers.
  • Perform code reviews and contribute to software design and architecture discussions.
  • Provide documentation and ongoing support for deployed systems.
Experience Required
  • 7+ years of hands-on development in Java , with strong expertise in Spring , Spring Boot , RESTful APIs , and Microservices architecture.
  • Proficiency in SQL and experience with relational databases .
  • Knowledge of Maven , Git , JUnit , and test-driven development practices.
  • Familiarity with CI/CD pipelines , Linux , and Bash scripting .
  • Understanding of security protocols such as SAML , encryption , certificates , and web security best practices .
  • Exposure to JSON , web services , and working within Agile/DevOps environments .
  • Nice to have: Experience with Keycloak and OpenSearch .
  • Strong analytical and problem-solving skills, with the ability to thrive in high-performance teams.
  • Bachelor's degree in Computer Science, Information Systems, or related field-or equivalent work experience.
Vacancy posted 17 hours ago
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