Kristian Hans Onjala Full-Stack Engineer / Cofounder / STEM Mentor
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ViaziLink

A mobile platform connecting potato farmers directly with buyers and exposing real-time market prices.

  • AgriTech
  • Mobile
  • Marketplace

Tech Stack

K Kotlin J Jetpack Compose F Firebase Auth C Cloud Firestore H Hilt D DataStore C Coil

Build Highlights

  • Jetpack Compose UI for mobile-first farmer and buyer workflows.
  • Firebase Authentication and Cloud Firestore for access control and marketplace data.
  • Hilt, DataStore, and Coil for dependency injection, local preferences, and image handling.

Overview

Project overview

ViaziLink was built to reduce reliance on middlemen by giving farmers and buyers a direct digital channel.

Problem

What it solves

Potato farmers often lacked direct buyer access and transparent pricing, reducing income reliability.

Build

Implementation details

What I worked on

  • Built Android product flows for farmer and buyer journeys in Kotlin.
  • Worked on authentication, cloud-backed data handling, and marketplace interaction design.

Technical implementation

  1. 01

    Jetpack Compose UI for mobile-first farmer and buyer workflows.

  2. 02

    Firebase Authentication and Cloud Firestore for access control and marketplace data.

  3. 03

    Hilt, DataStore, and Coil for dependency injection, local preferences, and image handling.

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