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Senior Full-Stack Developer

ION Group

$170,000 - $200,000
Sep 22, 2025
New York, NY, US
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Advancing the client's agenda in the financial services industry by developing and maintaining scalable software solutions and end-to-end system integrations.

Requirements

  • Proficient in Java (versions 8-21), with strong command of Lambdas, Streams API, and functional programming principles.
  • Experience in backend development using Spring frameworks (Core, MVC, Security, Data).
  • Working knowledge of JavaScript for UI interaction or scripting tasks.
  • Proficiency in at least one additional language such as Python or Scala.
  • Experience working with relational databases like Oracle or PostgreSQL.
  • Comfortable deploying to and working with App/Web servers such as Tomcat or JBoss.
  • Experience developing infrastructure-as-code and cloud-native applications.

Responsibilities

  • Develop and maintain scalable software solutions and end-to-end system integrations.
  • Design and implement clean, efficient, and reusable interfaces aligned with industry best practices.
  • Extend and enhance existing products and services through development, testing, and implementation of new features.
  • Collaborate with cross-functional teams to build and automate cloud infrastructure.
  • Integrate automated deployments into CI/CD pipelines to streamline software delivery.
  • Conduct root cause analysis and data investigations to support reporting, diagnostics, and performance optimization.

Other

  • Some understanding of the financial services sector.
  • Proven track record of independent work, team collaboration, and client relationship management.
  • A dynamic, collaborative, and challenging work environment.
  • Opportunities for growth and professional development within a global organization.
  • Exposure to cutting-edge technologies in the fintech domain.