Senior Full-Stack Engineer (Director)

4 Staffing Corp
Newark, NJ
Job Description
Our client, a leading global investment technology organization, is seeking a Director-Level Full Stack Software Engineer to join a highly visible team responsible for building next-generation applications that support complex investment, analytics, and portfolio workflows.

Requirements

  • 10+ years of full-stack development experience, ideally within high-scale or data-intensive environments
  • Expert-level proficiency with React/Next.js, Node.js, TypeScript, and TurboRepo
  • Experience with GraphQL, REST APIs, and microservices
  • Strong command of HTML, CSS, JavaScript, CSS Modules, Storybook, and modern component libraries (e.g., Radix UI)
  • Hands-on experience with SQL/NoSQL databases (PostgreSQL, Graph DB, etc.)
  • Strong experience with Docker and deploying applications in AWS cloud environments
  • Solid understanding of UI/UX design principles and ability to collaborate with design teams
  • Proficiency with Git and enterprise version control workflows
  • Experience implementing token-based authentication and modern security patterns
  • Background in building scalable, high-availability applications
  • Experience writing unit, integration, and end-to-end tests across the full stack
  • Familiarity with automated testing frameworks such as Cypress, Test containers, and Vitest
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