Full stack Architect

Delta System & Software, Inc.; Jersey City (NJ); On-site; USD 140,000 - 220,000; Full time

Job summary

Delta System & Software, Inc. in Jersey City seeks a Lead Frontend Engineer to design high-performance web experiences using React and TypeScript, with backend Java Spring involvement.

You will own frontend architecture, mentor engineers, and partner with product teams to deliver scalable UI and microservices. The role emphasizes performance, accessibility, and secure client-side patterns, with a strong focus on modern tooling and DX improvement.

Qualifications

• 14+ years of professional software engineering experience with frontend focus.
• Expert React proficiency with hooks, context, and rendering behavior.
• Strong Java & Spring skills for backend microservices and API contracts.
• Must use AI-assisted tools to accelerate development and maintain secure practices.

Responsibilities

• Lead development of complex, user-facing web applications using React + TypeScript and front-end architecture.
• Develop microservices / API contracts (GraphQL/REST) with Java and Spring technologies and frontend-friendly patterns.
• Collaborate with UX/Product to translate designs into polished experiences with performance and accessibility in mind.
• Establish and evolve front-end standards: architecture, state management, routing, testing practices.
• Drive Core Web Vitals, bundle optimization, rendering strategies, caching, and observability.
• Implement rich UI features like real-time updates, offline-capable patterns, and robust forms.
• Ensure secure client-side patterns: safe auth flows, token handling, secure storage.

Skills

React Expert

TypeScript

Java Spring

Web Performance

Testing

Accessibility

AI-assisted Dev

Tools

Vite/Webpack

Babel/SWC

NPM/Yarn

Monorepos

Build pipelines

Job description

Lead the design and development of modern, high-performance web experiences using React and the broader front-end ecosystem. This role is front-end (React + TypeScript) 60% and backend (Java Spring) 40% focused skills to deliver cutting-edge UI & Microservices capabilities and set engineering standards.

Job responsibilities

• Lead development of complex, user-facing web applications using React + TypeScript, owning the front-end architecture and delivery approach.
• Develop microservices / API contracts (GraphQL/REST) using Java and Spring technologies and front-end friendly design patterns (pagination, filtering, error models).
• Partner with UX/Product to translate designs into polished experiences; influence requirements with feasibility, performance, and accessibility considerations.
• Establish and evolve front-end standards: component architecture, state management, routing, code conventions, and testing practices.
• Drive performance and quality: Core Web Vitals, bundle optimization, rendering strategies, caching, and runtime observability.
• Implement advanced UI capabilities such as rich data visualization, real-time updates, offline-friendly patterns, and robust form/workflow experiences.
• Ensure secure client-side patterns: safe auth flows, token handling guidance, secure storage, and protection against common web vulnerabilities.

Required qualifications, capabilities, and skills

• 14+ years professional software engineering experience with significant depth in front-end web development; experience leading projects and mentoring engineers.
• Expert-level React proficiency (hooks, component composition, context, rendering behavior, concurrency-related patterns where applicable).
• Strong Java and Java Spring skills to develop microservices / API contracts (GraphQL/REST) using Java and Spring technologies and front-end friendly design patterns (pagination, filtering, error models).
• Deep experience with modern front-end tooling: Vite/Webpack, Babel/SWC, npm/pnpm/yarn, monorepos (optional), and build/release pipelines.
• Strong CSS skills: responsive design, CSS architecture (CSS Modules, CSS-in-JS, or utility frameworks), theming, and consistent styling at scale.
• Advanced testing practices: Jest/Vitest, React Testing Library, Playwright/Cypress for E2E; test strategy ownership.
• Accessibility expertise: WCAG/ARIA, keyboard navigation, screen-reader considerations, and automated + manual a11y testing.
• Performance engineering: profiling, bundle splitting, SSR/CSR trade-offs, caching strategies, and Core Web Vitals optimization.
• API integration expertise with GraphQL and REST (schema-driven development, error handling, pagination, caching, and client state strategies).
• Security awareness for web apps: XSS/CSRF prevention, dependency hygiene, secure auth/session patterns (OIDC awareness a plus).
• Observability for the front end: client-side logging/metrics, error reporting, and debugging production issues.
• MUST: Proficiency using AI-assisted engineering tools (e.g., Claude Code, GitHub Copilot) to accelerate implementation, refactoring, test creation, and debugging—while validating correctness and adhering to secure handling practices.

Preferred qualifications

• Experience with SSR/meta frameworks: Next.js / Remix and SEO considerations.
• Experience leveraging a design system (Storybook, tokens).
• Experience with micro-frontend patterns and module federation (where relevant).
• Experience with visualization and rich UI: D3, Canvas/WebGL, advanced tables/grids, animation libraries.
• Familiarity with authentication integrations (OIDC/OAuth2) and enterprise SSO constraints.
• Proven track record modernizing legacy front ends and improving developer experience (DX).