Kuthadi Arun

Results-oriented Full Stack JavaScript Developer with 5+ years of hands-on experience delivering robust, scalable, and user-friendly web and mobile applications across HRTech, FinTech, and SaaS industries. Proficient in front-end technologies including React.js, Next.js, Redux Toolkit, Tailwind CSS, and TypeScript, with strong back-end expertise using Node.js, Express.js, AWS Lambda, and serverless architecture. Adept at building and maintaining cloud-native solutions on AWS with components like API Gateway, Cognito, DynamoDB, S3, and CloudWatch, ensuring performance, scalability, and cost efficiency. Skilled in designing secure authentication systems using OAuth 2.0, JWT, and AWS Cognito, with experience in implementing RBAC, multi-role access control, and identity federation for enterprise-grade security. Proven ability to architect modular UI libraries and component systems using Storybook, Material-UI, and Tailwind CSS, ensuring consistency, reusability, and design-system alignment. Experienced in managing real-time data interactions via WebSocket’s and building interactive dashboards and notifications for operational visibility and enhanced user engagement. Strong command of testing strategies and CI/CD with tools like Jest, Cypress, GitHub Actions, and Vercel, ensuring code quality, deployment efficiency, and reduced downtime. Demonstrated success in migrating monolithic apps to microservices/serverless, leading to improved maintainability and a 30%+ reduction in infrastructure costs. Well-versed in Agile methodologies, sprint planning, and cross-functional collaboration, with experience mentoring junior developers and reviewing code for best practices and performance optimization. Passionate about performance tuning, accessibility, and clean code practices using tools such as Lighthouse, ESLint, Sentry, and CloudWatch for observability and continuous improvement.

• Infosys Certification – Python Programming
• React Advanced Concepts – Udemy

🎯 Key Accomplishments

1. Customer Support Portal at T-Mobile (2025 – Present)

Led front-end development of a global, real-time Customer Support Portal using React.js, Redux Toolkit, and AWS Lambda, serving thousands of users daily.

Improved resolution time by implementing WebSocket-based live ticket updates, enhancing real-time responsiveness for support agents.

Enhanced security by integrating OAuth 2.0, JWT, and AWS Cognito with role-based access control (RBAC) and federated identity.

Boosted release efficiency by setting up CI/CD workflows with GitHub Actions and Vercel, achieving zero-downtime deployments and automated rollbacks.

2. Client Dashboard Platform at T-Mobile

Built a fully responsive subscription management and billing insights dashboard with React.js, Redux Toolkit, and Chart.js.

Implemented Stripe integration for secure payments and automated billing workflows.

Developed drag-and-drop analytics widgets, improving usability and customer engagement.

3. HR Information System (HRIS) at Techno Techie Software (2020 – 2023)

Engineered a full-featured HRIS managing payroll, leave, attendance, and employee data, deployed on AWS Lambda, API Gateway, and DynamoDB.

Automated HR document generation (offer letters, payslips) using PDFKit and Puppeteer, reducing manual workload by 60%.

Migrated monolithic applications to serverless architecture, cutting infrastructure costs by 30%+.

Designed reusable UI component libraries with Material-UI and Tailwind CSS, ensuring scalable and theme-consistent design.

4. Cloud & DevOps Contributions

Instrumented observability with AWS CloudWatch and Sentry, enabling proactive monitoring and resolving 90% of production bugs within SLA.

Implemented performance optimizations (lazy loading, caching, Lighthouse audits), reducing page load times and improving accessibility scores.

5. Leadership & Mentorship

Mentored junior developers at T-Mobile in clean code practices, performance tuning, and security-first development, raising overall team delivery quality.

Actively participated in Agile ceremonies, sprint planning, and cross-functional collaboration, ensuring timely feature delivery.

• Member, IEEE Computer Society
• Contributor, Open-Source Projects on GitHub (React.js, Node.js, AWS serverless tools)
• Participant, AWS User Group – Cloud Native Development Community
• Graduate Member, Rivier University Computer Science Alumni Network

• Open-Source Contributions: Active contributor to GitHub projects related to React.js, Node.js, and AWS serverless frameworks.
• Professional Interests: Cloud-native development, DevOps automation, scalable front-end architecture, and performance optimization.
• Achievements: Migrated enterprise systems from monoliths to serverless, achieving a 30%+ cost reduction; automated HR workflows reducing manual effort by 60%.
• Community Involvement: Regular participant in AWS User Groups, JavaScript meetups, and coding hackathons.