Front End Engineer with Strong React.JS

Front End Engineer – React.JS, React 18, Angular 12, Nextjs 13 Location: Hartford, CT (Hybrid – 3 days) – Only locals Duration: Contract About Smart IT Frame At Smart IT Frame, we connect top talent with leading organizations across the USA. With over a decade of staffing excellence, we specialize in IT, healthcare, and professional roles, empowering both clients and candidates to grow together. Role Summary Join our frontend engineering team to build intuitive, high‑performance user interfaces for enterprise retirement platforms serving millions of customers. As a Junior Frontend Engineer you will develop React and Angular applications, implement modern UI patterns and contribute to delivering secure, accessible financial applications. This role offers hands‑on experience with cutting‑edge frontend technologies, state management, performance optimization and secure coding practices within a regulated financial environment. Key Responsibilities Develop and maintain React and Angular components for retirement account dashboards, contribution workflows and investment portfolio interfaces Implement responsive, accessible user interfaces following WCAG 2.1 AA standards ensuring usability for all customers Build reusable UI components and integrate them into design systems for consistency across applications Implement state management solutions using Redux, Zustand or React Context for application‑wide data handling Integrate APIs using Axios, React Query, SWR and Apollo Client for efficient data fetching and caching Develop data visualization components using AgGrid Community Edition, D3.js, Recharts and Chart.js for financial data presentation Implement client‑side and server‑side rendering patterns using Next.js for optimal performance and SEO Contribute to performance optimization efforts including code splitting, lazy loading and bundle size reduction Work with Node.js‑based BFF services to support frontend data aggregation and transformation needs Implement real‑time features using WebSockets and Socket.io for live market updates and notifications Write comprehensive unit and integration tests using Jest, React Testing Library and Cypress Follow secure coding practices to prevent XSS, CSRF and other vulnerabilities in customer‑facing applications Implement authentication and authorization flows following OAuth2/OIDC best practices Collaborate with designers, backend engineers and product teams to deliver compliant, user‑centric features Participate in code reviews and learn from senior engineers to improve code quality and technical skills Maintain technical documentation for components and features developed Required Skills and Experience 3–5 years of professional frontend development experience building production web applications; exposure to web analytics implementations Strong proficiency in React, including hooks, Context API and component lifecycle with practical production experience Working knowledge of Angular, including components, services, RxJS and dependency injection Experience with state management libraries Redux, Zustand or React Context Hands‑on experience with data fetching libraries React Query, SWR, Axios or Apollo Client for GraphQL integration Proficiency with React Router for client‑side routing and navigation Experience implementing data visualization using AgGrid Community Edition, Recharts, Chart.js or D3.js Exposure to Next.js for SSR/SSG implementations and understanding of rendering strategies Working knowledge of modern CSS including CSS‑in‑JS, CSS modules, Tailwind CSS or SCSS Familiarity with build tools and bundlers Webpack, Vite or similar toolchains Understanding of Node.js for building simple BFF services or middleware components Experience with real‑time communication using WebSockets or Socket.io Knowledge of web accessibility standards WCAG 2.1, including semantic HTML, ARIA attributes and keyboard navigation Understanding of frontend security best practices including XSS prevention, CSRF protection and secure authentication patterns Familiarity with OAuth2/OIDC authentication flows and JWT token handling Experience with testing frameworks Jest, React Testing Library, Cypress or Playwright Proficiency with Git version control and collaborative development workflows Preferred Qualifications Experience in fintech, banking or retirement services or regulated financial environments Familiarity with compliance requirements ERISA, SEC and their impact on frontend development Understanding of GraphQL schema design and query optimization Experience with component libraries and design systems using Storybook Knowledge of progressive web apps (PWA) and service workers Exposure to CI/CD pipelines and automated deployment processes Familiarity with frontend monitoring tools Sentry, LogRocket, Dynatrace and RUM Understanding of performance profiling using Chrome DevTools and Lighthouse Employment Details Senior Level: Associate Employment Type: Contract Job Function: Analyst 📩 Apply today or share profiles at deighton@smartitframe.com Referrals increase your chances of interviewing at Smart IT Frame LLC by 2x. 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