Facilitated knowledge sharing sessions on fundamental back-end engineering concepts and provided guidance to 8 teams participating in the PENS FEST 2022. The following essential back-end topics were covered:• Utilizing UML and ER Diagrams to establish well-structured databases• Implementing Rest API for efficient web application development• Designing robust authorization and authentication systems within the back-end• Applying Greedy algorithms to solve scheduling problems• Seamlessly integrating back-end applications across various domains, including front-end and mobile platforms

• Streamlined HR and payroll management for Bandung-based food business by developing a new system to read the new employee attendance format. The system was built using full-stack Laravel, and it helped the HR team to manage more than 40 outlets faster and simpler than the previous system.• Designed and implemented APIs to user management system for Obgyn Clinic using Ruby on Rails and Google Cloud Platform. The APIs included user authentication and email verification, and they made it possible for the Obgyn Clinic app to scale to meet the needs of a growing user base.• Created and developed all user management CRUD systems in Obgyn Clinic's front-end app using ReactJS. The CRUD systems made it easy for users to create, read, update, and delete their accounts, and they helped to improve the overall user experience of the app.

• Built a deep learning model called KAMI that can classify 8 Indonesian foods with their recipe and nutrition facts using Python and TensorFlow. The model was trained on a dataset of over 1600 images, and it achieved an accuracy of 74.7%.• Designed and implemented an API for the deep learning model using Flask. The API made it possible for users to easily access the model's predictions.• Created an image classifier user interface in the front-end side using Tailwind CSS. Streamlined the user interface for users to classify images of Indonesian food.

• Created a web-based application called Prakind that helps vocational and college students to apply for internships to a specific company or institute. The application was built using Laravel and ReactJS, and it features a user-friendly interface that simplifies the students to find and apply for internships.• Concieved and implemented the back-end system, including REST API, database design, and roles & permissions. The back-end system is secure and scalable, and it makes it easy for students to interact with the application.• Collaborated with the front-end team to design and implement the user interface. The user interface is intuitive and easy to use, and it makes it easy for students to find and apply for internships.