Vijay Thumar

Frontend Developer

Simform Solutions

Dec 2021 - Present

Built and maintained scalable React and Next.js applications with reusable component libraries, delivering pixel-perfect UI aligned to design specifications across multiple client projects. Integrated secure RESTful and GraphQL APIs with JWT-based authentication and role-based access control (RBAC) covering Student, Evaluator, and Admin roles on a credentialing platform. Developed serverless backend functions in Node.js on AWS Lambda, integrating third-party analytics APIs for real-time data flow without server management overhead. Implemented OAuth2/OIDC authentication flows using AWS Cognito and Auth0, ensuring secure, standards-compliant user authentication across enterprise applications. Deployed and integrated cloud-native AWS infrastructure (S3, EC2, Cognito, CloudFront CDN, RDS, Lambda), owning frontend-to-infrastructure integration end-to-end. Managed complex application state using Redux Toolkit and Context API, reducing boilerplate and improving UI responsiveness and maintainability. Optimized application performance through lazy loading, code splitting, and Webpack/Vite build tuning, improving initial load times across large-scale apps. Engineered a dynamic PDF generation system using pdf-lib and built interactive data dashboards using D3.js and Recharts, translating complex datasets into actionable insights. Mentored junior developers through code reviews, enforcing shared standards using ESLint, Prettier, and Husky across team codebases. Leveraged AI coding agents (Claude Code, GitHub Copilot, Cursor) for component generation, test writing, and API exploration while reviewing output for accuracy, security, and maintainability. Contributed to architecture and design-system decisions in agile sprints with designers, backend engineers, QA, and product managers.