Weekend Frontend Developer Jobs in Massachusetts

Job Title: Fullstack Frontend Engineer   
Job Location: Hartford ,CT
Job Type: Contract 

Job Description:  

• Develop and maintain React and Angular components for retirement account dashboards contribution workflows and investment portfolio interfaces 

• Implement responsive accessible user interfaces following WCAG 21 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 applicationwide 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 D3js Recharts and Chartjs for financial data presentation 

• Implement client side and server-side rendering patterns using Nextjs for optimal performance and SEO 

• Contribute to performance optimization efforts including code splitting lazy loading and bundle size reduction 

• Work with Nodejsbased BFF services to support frontend data aggregation and transformation needs 

• Implement Realtime features using WebSockets and Socketio 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 OAuth2OIDC best practices 

• Collaborate with designers' backend engineers and product teams to deliver compliant usercentric features 

• Participate in code reviews learning from senior engineers to improve code quality and technical skills 

• Maintain technical documentation for components and features developed 

Required Skills and Experience 

• 35 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 

• Solid TypeScript and JavaScript ES6 skills with understanding of modern language features and type safety 

• Experience with state management libraries Redux Zustand or React Context 

• Handson 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 Chartjs or D3js 

• Exposure to Nextjs for SSRSSG implementations and understanding of rendering strategies 

• Working knowledge of modern CSS including CSSinJS CSS modules Tailwind CSS or SCSS 

• Familiarity with build tools and bundlers Webpack Vite or similar toolchains 

• Understanding of Nodejs for building simple BFF services or middleware components 

• Experience with Realtime communication using WebSockets or Socketio 

• Knowledge of web accessibility standards WCAG 21 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 OAuth2OIDC 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 

• Understanding of responsive design MobileFirst development and cross browser compatibility 

Preferred Qualifications 

• Experience in fintech banking 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 CICD pipelines and automated deployment processes 

• Familiarity with frontend monitoring tools Sentry LogRocket Dynatrace RUM 

• Understanding of performance profiling using Chrome DevTools and Lighthouse 

• Technical Stack 

• Frameworks React 18 Angular 12 Nextjs 13