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Cleaned and validated a messy CSV dataset, standardized dates and currency values, removed duplicates, flagged uncertain rows, and delivered a concise quality report.
The network for creativity
Join 1.25M professional creatives like you
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Creatives on Contra have earned over $150M and we are just getting started
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Messy sales CSV in, decision-ready report out: cleaning with a data-quality log, KPIs with month-over-month analysis, and an automated report with charts. Anomaly detection is baked into the report - outliers, revenue mismatches and MoM spikes are flagged where they happen, so it is not a pretty-but-blind dashboard. Every cleaning step is logged, so you can see exactly what was fixed, dropped, or flagged before any number reached a chart. Public code: github.com/jigonyoo/analytics-pipeline
💎 Luxury Retail Performance Dashboard
Description:
Built a professional Luxury Retail Performance Dashboard to help premium retail brands monitor sales performance, understand VIP customer behavior, compare store performance, and drive revenue growth through data-driven insights.
This dashboard provides a comprehensive overview of Premium Sales, VIP Customers, Product Performance, Store Comparison, Revenue Growth, and Customer Insights, enabling luxury retailers to identify high-performing products, evaluate store performance, analyze customer purchasing behavior, improve customer retention, and maximize profitability.
Developed using Microsoft Power BI, SQL, and Microsoft Excel, the dashboard features executive-level KPI cards, interactive visualizations, premium customer segmentation, sales trend analysis, store comparison reports, and dynamic performance metrics. It transforms complex retail data into actionable business intelligence, empowering organizations to deliver exceptional customer experiences and make strategic business decisions.
Key Features
💎 Premium Sales Performance Analysis
👑 VIP Customer Insights & Segmentation
🛍️ Luxury Product Performance Tracking
🏬 Store Comparison & Benchmarking
📈 Revenue Growth & Profitability Analysis
📊 Executive KPI Dashboard with Interactive Reports
Client Note
Looking for a customized Luxury Retail Performance Dashboard tailored to your business? I design premium, executive-level Business Intelligence dashboards that transform complex retail data into meaningful business insights. Every dashboard is customized to your business objectives, helping you monitor premium sales, understand VIP customer behavior, compare store performance, optimize product strategies, and accelerate revenue growth. If you're looking for a high-quality, professional dashboard that combines elegant design with actionable analytics, I'd be happy to build a solution that supports your business goals and delivers measurable value.
PolyLinq: Breaking Language Barriers in Gaming
PolyLinq is a multilingual platform built for gamers to connect, communicate, and play together regardless of the language they speak. The platform combines AI-powered translation with a modern gaming experience, enabling players to discover teammates, join communities, chat seamlessly, and participate in multiplayer experiences without language becoming a barrier.
I designed and built PolyLinq completely from scratch, taking the project from concept to a fully interactive prototype. Rather than relying on a single technology, I combined multiple low-code platforms with custom code to rapidly design, iterate, and implement the product while maintaining complete control over the user experience and functionality.
Throughout the project, I focused on creating realistic user journeys, intuitive navigation, consistent design, and production-ready interactions instead of static mock-ups. Every screen was designed to represent how a real product would function, from onboarding and player discovery to multilingual chat, community features, and gameplay workflows.
This project demonstrates how AI, thoughtful UX, and modern development workflows can come together to solve a real-world problem for the global gaming community. My goal was to build something that feels like a product people would genuinely use, not just a design concept.
Submission checklist,:
✅ Built entirely from scratch.
✅ Combined low-code tools with custom code.
✅ Designed and iterated from idea to interactive prototype.
✅ Multi-screen, fully navigable user experience.
✅ Focused on solving a real problem: language barriers in gaming.
✅ Shared the design process, iterations, and final prototype.
