• Led the design and development of the Cyber Unbound core MVP as Platform HOD. Developed REST APIs for integration with the CTFd instance running on a docker container with the platform’s NoSQL database.• Implemented JWT authentication for the platform along with Single Sign On (SSO) functionality for CTFd vetting instances.• Developed shadcn/ui data tables with pagination and dynamic querying api using url search params based searching to display query results on the company search dashboard.• Wrote scripts to ensure data consistency between the CTFd instance and platform database.• Integration with EmailOctopus API for emailing campaigns and building of SMTP service using nodemailer and Google’s SMTP servers to send mails to stakeholders.• Used debouncing and throttling to minimize API calls to the AWS Lambda function for searching by 43%.• Built out e2e web based CTF challenges including exploits like XSS, IDOR, SSRF, prototype pollution, etc. using Node.js, Express, React along with Express Handlebars, EJS and MySQL. Configured Nginx for port forwarding subdomain to respective challenge on AWS ec2 • Containerization of web challenges along with isolated docker networks using docker-compose and deployment on AWS EC2.• Had several discussions and feature reviews with the company's board members to gain industry insights while building a platform from scratch.