karthik k

Full stack developer

Kuvi Networks

Mar 2025 - Feb 2026

Developed, deployed, and maintained end-to-end full-stack applications using React.js, Node.js, and PostgreSQL, managing the complete software development lifecycle from implementation to production deployment. Engineered full-stack features for the Guidebook and Store modules, streamlining self-service guest information and reducing guest support requests. Built a dynamic Guidebook system enabling hosts to manage and publish real-time guest information, including check-in instructions and local recommendations, achieving adoption across all onboarded host accounts. Delivered a scalable multi-user Store module supporting seller and customer workflows, improving transaction completion rates and overall platform usability. Architected scalable state management using Redux Toolkit (Slice pattern), reducing UI inconsistencies across complex asynchronous workflows and minimizing state-related bugs. Designed and maintained 20+ RESTful APIs using Node.js and Express with full CRUD operations, input validation, authentication, and centralized error handling to ensure reliable data flow across services. Authored and managed PostgreSQL database migrations for every feature release, ensuring version-controlled, reversible, and consistent schema updates across development and production environments. Contributed to product development during a period of approximately 840% MRR growth and 600% user growth, supporting the platform's rapid scale. Developed Roku TV app templates using BrightScript and XML, integrating backend APIs to deliver branded in-room guest experiences with real-time content on Roku devices.