I developed an AI-driven chatbot using Python and Retrieval-Augmented Generation (RAG) technology, combining semantic search with BM25 ranking to deliver precise, contextually relevant responses. By integrating OpenAI embeddings in Pinecone, the system ensures fast and accurate information retrieval. Parallel processing is used to run multiple search strategies simultaneously, enhancing efficiency and response speed.

For the demo below, I created a simple and clean UI using Streamlit. The chatbot reads data from several PDFs containing my LinkedIn profile and posts, enabling it to generate insights based on my professional experience and shared content. Key features of the application include intelligent query caching, efficient document processing, and a hybrid search approach that combines keyword matching and semantic understanding to provide sophisticated, user-friendly responses.

If the chatbot below not loaded, you can visit here https://ridwancard.streamlit.app/

I built the Smart Shortcut Panel, a Chrome extension that enhances your browsing experience by providing quick access to your favorite websites through keyboard shortcuts and a customizable floating panel. This extension dynamically appears on specific websites, displaying shortcuts relevant to the current domain, making it easy to navigate between related pages without needing to open bookmarks or type URLs. With the ability to configure up to 10 global keyboard shortcuts and organize them by domain, users can save time and streamline their browsing workflow.

Built using the latest Chrome Extensions API, Smart Shortcut Panel utilizes service workers for shortcut management, content scripts to display a movable panel, and encrypted storage to protect user data. The extension employs AES-GCM 256-bit encryption for premium data security, while its lightweight content script implementation ensures optimal browsing performance. With privacy in mind, all data is stored locally on the user's device, and the extension only requests the necessary permissions (storage, commands, activeTab), offering a seamless experience while keeping your browsing secure.

You can download Smart Shortcut Panel from the Chrome Store below:

As a Certified Ethical Hacker (CEH), I have identified multiple security vulnerabilities in government websites, including sensitive information disclosure, admin account takeovers, API endpoint exploits for extracting personal employee data, and password pattern analysis for potential breaches. One of my discoveries was acknowledged in the Hall of Fame of BPK (Supreme Audit Board of Indonesia). Due to confidentiality and institutional reputation, several of my other findings remain undisclosed.

I was a finalist in a national hackathon at the Indonesian Ministry of Finance, where I tackled critical challenges with innovative cybersecurity solutions. Additionally, I won a data analytics competition organized by the MoF-DAC (Ministry of Finance Data Analytics Community), where I applied advanced analytics techniques to enhance information security.