Senior Full-Stack Engineer (Director)

4 Staffing Corp•Newark, NJ

21h•Hybrid

About The Position

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. This role is ideal for an engineer who thrives in an Agile environment, enjoys architecting scalable solutions, and is passionate about delivering exceptional user experiences.

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
US Citizen/Green Card holders only

Nice To Haves

Experience with Figma , ReactFlow, Redux, Jotai, and advanced design systems
Background in decomposing monoliths into microservices
Knowledge of authentication mechanisms and security best practices
Familiarity with Jira, Confluence, Bitbucket, Jenkins, and enterprise DevOps pipelines
Experience working within the SAFe Agile methodology
Bachelors degree in Computer Science, Engineering, Finance, Economics, or a related field
Experience using AI-assisted development workflows, including generating components from design systems
React/Redux, TypeScript, Node.js, D3
PNPM, SASS/CSS3, HTML5, JSX, ES6
Jest/Vitest, Cypress, Testcontainers
NGiNx and AWS cloud services
Strong grounding in React fundamentals (components, hooks, lifecycle)
Understanding of authentication, authorization, SSL, and other modern security concepts

Responsibilities

Design, develop, and enhance custom UI components and full-stack features aligned with project requirements
Work within modern AWS-based development environments, including CLI and sandbox/local setups
Build high-quality front-end applications using React, TypeScript, and modern design systems
Collaborate with Tech Leads, Product Owners, and Business Analysts to transform business needs into scalable, production-ready applications
Balance multiple initiatives and workstreams in a fast-paced environment
Research emerging technologies, build proofs of concept, and help guide architectural decisions
Deliver intuitive and elegant user interfaces using Material Design & MUI
Participate in the creation of personas, user scenarios, wireframes, prototypes, and high-fidelity UI mockups
Ensure solutions meet business goals through user testing, performance validation, and continuous improvement

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