In 2021, Indonesia generated 21.88 million tons of waste, with 42.23% coming from households. However, more than 50% of the population are still reluctant to sort waste because they consider it troublesome and pointless, making recycling processes difficult for waste managers. Waste separation is crucial for protecting the environment while also opening economic opportunities from household waste.

Awareness through education and solutions is needed to increase public understanding of the importance of sorting waste into categories, namely organic and inorganic. This waste separation, besides being beneficial for environmental sustainability, also facilitates waste managers or businesses involved in waste reuse to meet all their operational needs. Thus, waste can become a source of income instead of ending up wasted in landfills.

We present an e-commerce website that helps the community and businesses view waste as something valuable. This platform facilitates buying and selling of used materials and recycled products, provides education, and rewards users through a points system to make waste management more practical and beneficial.

The main goal of this service is to increase awareness and responsibility among the public regarding the importance of waste management and sorting. Additionally, the platform offers opportunities for individuals to earn extra income by selling valuable waste. For businesses or industries, this service helps meet the demand for recycled raw materials more easily, while providing clear access to trusted recycled waste suppliers.

After the brainstorming phase, our team proceeded to the development stage, starting with design stages including wireframes, creating a design system, high fidelity, and finally the prototype. Next, we moved on to UI slicing using React Js, where the dev team, including myself, performed UI slicing according to the previously designed layouts. Once partially completed, we proceeded to backend development and data integration via API.

This was the final project in the independent study program, where we gained extensive hands-on experience. Although it hasn’t reached the deployment stage yet, we successfully delivered satisfying results, earning recognition as one of the best teams in terms of business ideas and project progress compared to other teams.

The Re4Cash project produced a prototype marketplace for buying and selling second-hand goods, recycled waste, and handmade products. Although it has not yet reached the deployment stage, our team successfully completed key phases from design planning, prototyping, UI slicing with React Js, to backend integration through API. With these achievements, our team was selected as one of the top candidates in the independent study program due to relevant business ideas and satisfactory development progress.

Through this project, my team and I gained valuable experience, both technically and non-technically. We learned to translate real-world problems into digital solutions, deepen fullstack development skills from design systems to API integration, and also enhance time management, communication, and team collaboration skills. This experience further strengthened my understanding of building end-to-end applications while working effectively in a real project team.

• Programming Language: Javascript, Node Js

• Framework: React Js, Express Js

• Other Technologies: HTML, CSS, Axios, Redux

• Database & ORM: MySQL