Senior Full-Stack Engineer (Director)
4 Staffing CorpNewark, New Jersey, United States
Posted January 5, 2026
Full Time
About the Company
4 Staffing Corp is a global staffing and recruitment firm that specializes in placing high‑skill professionals across IT, finance, engineering, and manufacturing sectors, including ERP, cybersecurity, SAP, Salesforce, and AI/ML solutions. Leveraging a proprietary candidate‑to‑job matching platform built by recruiters and IT experts, the company maintains a database of tens of thousands of pre‑qualified candidates, enabling rapid, high‑quality placements through contingency, contract, temp‑to‑perm, and RPO services. With more than two decades of experience and a worldwide affiliate network, 4 Staffing emphasizes long‑term relationships, integrity, and customer‑centric service rather than short‑term gains. Its entrepreneurial culture encourages open communication and continuous improvement, ensuring that both clients and candidates receive a personalized, value‑driven experience.
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
