Web Development
Responsive web solutions using the latest technology
We accurately understand customer requirements and provide web solutions that are continuously improved through user testing, starting from minimal features and rapid development.
Key Features
Latest frameworks like React, Next.js, Vue.js
Responsive design for all devices
SEO optimization and performance improvement
Security enhancement and maintenance
Development Process
Requirements analysis and technology stack selection
MVP feature definition and design
Rapid prototype development
User testing and feedback collection
Continuous improvement and feature expansion
Web Development Project Cases
Successfully completed 29 web/app development projects
Multilingual support chatbot for foreign residents
2025.01 ~ present
Problem
Demand for automating foreign-resident inquiries at government programs and local authorities was rising, but counseling resources per language were short.
Solution
Built a multilingual chatbot on GPT-4 and RAG, integrating public-data APIs and OAuth login, with improvement features driven by user logs.
Results
Within 3 months of the pilot: 1,200+ sessions / 75%+ auto-response rate / 40% less counseling staff time.
Tech Stack
Political leaning analysis platform
2025.01 ~ 2025.08
Problem
Voters found it hard to compare policy information or judge where they stood.
Solution
Built a GPT-based conversational survey algorithm, a RAG system over a pledge database, and an automatic report generator.
Results
1,500+ participants / 8,000+ social shares / 42% return rate.
Tech Stack
RAG system over public data
2025.06 ~ 2025.07
Problem
Policy information was scattered across many local-government sites, leaving it hard for foreign residents to reach.
Solution
A RAG chatbot wired to public databases, FAISS vector search, and automatic categorization of the data.
Results
83% accuracy / responses within 2.5 seconds / 4.7 user satisfaction.
Tech Stack
Automated AI investment analysis
2025.02 ~ 2025.03
Problem
Individual investors struggled to read financial statements and data on their own.
Solution
A GPT-based financial data analyzer wired to finance APIs (DART, ECOS), visualized on a Streamlit dashboard.
Results
85% less analysis time / 30% better accuracy in picking stocks.
Tech Stack
Marketing content automation
2025.05 ~ 2025.08
Problem
Too few hands for social content production, and running several platforms was a burden.
Solution
GPT-based content generation with trend crawling, a FastAPI backend, and a real-time WebSocket module.
Results
85% less production time / 80+ pieces published automatically per month.
Tech Stack
Healthcare meal-planning app
2025.06 ~ 2025.08
Problem
Designing personalized meal plans and tracking target nutrients was hard.
Solution
A GPT-4 meal recommendation model on a Supabase backend, integrated with a Next.js front end.
Results
400+ MAU / 4.6 user satisfaction / 72% retention.
Tech Stack
Tourism data analysis system
2025.07 ~ 2025.08
Problem
Tourist data was hard to analyze and use region by region.
Solution
A recommendation engine on public data, dashboard visualization, and automatic regional reports.
Results
Policy analysis reports automated / 50% faster decision-making.
Tech Stack
AI personality test MVP
2023.10
Problem
Lightweight tools for analyzing user tendencies were scarce.
Solution
A real-time test page combining TensorFlow.js with a GPT prompt model.
Results
5,000+ participants / 93% test completion rate.
Tech Stack
Education platform mobile app
2024.12 ~ 2025.08
Problem
The education service was hard to reach on mobile and payment was inconvenient.
Solution
Native iOS/Android apps with booking, payment and reviews, Firebase push, and map search.
Results
4,000+ MAU / 4.4+ app rating / booking completion up 30%.
Tech Stack
Corporate tax automation system
2025.01 ~ 2025.08
Problem
Handling electronic tax invoices involved a lot of manual work, wasting time and money.
Solution
A NestJS backend with a Next.js front end, Selenium-based collection from Hometax, and a unified database.
Results
Processing time down 90% / 25+ corporate customers acquired.
Tech Stack
Ad recommendation platform MVP
2025.09 ~ in progress
Problem
Matching advertisers with media was inefficient, and revenue was hard to manage.
Solution
URL analysis, recommendations from public data, QR tracking, and an admin panel.
Results
Beta in operation / CTR expected to improve 2.2×.
Tech Stack
Marketing dashboard for education institutions
2025.03 ~ 2025.08
Problem
Marketing performance was tallied by hand for each institution.
Solution
A GA4-integrated dashboard with an AI recommendation engine, deployed on AWS.
Results
Conversion up 20% / marketing efficiency up 35% / monthly reports automated.
Tech Stack
Mentoring match platform
2025.06 ~ 2025.08
Problem
Matching mentors and mentees ran without a system.
Solution
Next.js with Prisma, Toss payments integration, and a review and rating system.
Results
80+ mentors / 40+ matches per month / 95% payment success rate.
Tech Stack
Local program application platform
2025.05 ~ 2025.07
Problem
Applying for local experience programs was an inefficient process.
Solution
Next.js application management with an admin dashboard and booking features.
Results
Application process simplified / processing speed up 70%.
Tech Stack
Motivation tracking app
2025.03 ~ 2025.06
Problem
Users set goals and managed routines without any structure.
Solution
React Native with a NestJS and Prisma backend, an admin dashboard, and Docker CI/CD.
Results
800+ MAU / 85% test coverage.
Tech Stack
Partner management website
2024.10 ~ 2024.12
Problem
Registering and approving partners was handled manually.
Solution
A PHP website with partner registration and review management.
Results
40+ partners / approval time cut 60%.
Tech Stack
Portfolio website
2024.08 ~ 2024.12
Problem
There was no good platform to show project records and materials.
Solution
A Next.js portfolio wired to a CMS with map API integration.
Results
3× online exposure / quote inquiries up 45%.
Tech Stack
STAR-T MVP development platform
2024.06 ~ 2025.10
Problem
Keeping many projects on one consistent structure inside the education platform was hard.
Solution
Next.js 14 with TypeScript, Tailwind CSS, Docker and Framer Motion, deployed on Vercel.
Results
40 portfolio pieces unified / development speed up 60%.
Tech Stack
Commerce content automation
2025.06 ~ 2025.07
Problem
Producing commerce review content was mostly manual, so output stayed low.
Solution
Affiliate APIs, a blog review crawler, GPT content generation, and automated CMS upload.
Results
50+ pieces published automatically per month / 40% lower operating cost.
Tech Stack
Talent data collection system
2025.01
Problem
Gathering candidate data from each hiring platform was manual and inefficient.
Solution
Multi-platform crawling with a Flask dashboard and automated filtering and export.
Results
800+ candidate records collected automatically / 90% less time writing reports.
Tech Stack
Unified social analytics dashboard
2025.05 ~ 2025.07
Problem
Performance data sat in each social platform and was hard to analyze together.
Solution
Social API integration, a Streamlit dashboard, and a scheduler for automatic collection and visualization.
Results
2,500+ data points unified per month / reporting automated / insights reached 3× faster.
Tech Stack
Education institution data dashboard
2025.04
Problem
Operating metrics lived in spreadsheets, so real-time monitoring was impossible.
Solution
A Streamlit real-time dashboard wired to MySQL with Analytics API integration.
Results
Real-time data visualization / 50% better management efficiency.
Tech Stack
Local business data crawler
2023.06 ~ 2023.07
Problem
Local business information was organized by hand, which ate into analysis time.
Solution
Map-service crawling, spreadsheet automation, and packaging as a PyInstaller tool.
Results
2,000+ local records collected automatically / 70% less field research time.
Tech Stack
Partner prospect data collection
2025.09
Problem
Finding prospective partners meant repeating the same searches and data entry.
Solution
A web crawler with contact and domain extraction, and automatic CSV cleanup.
Results
400+ partner records gathered / 60% less time writing partnership proposals.
Tech Stack
Trend collection and content automation pipeline
2025.05 ~ 2025.06
Problem
Trend research and content production were manual, so the pace stayed slow.
Solution
Crawl Reddit, Threads and TikTok → GPT summaries → automatic card news → automated distribution with Make.
Results
Content planning time down 80% / 70 pieces generated automatically per week / CTR up 2.7×.
Tech Stack
Multilingual website development
2025.04 ~ 2025.05
Problem
For a service aimed at users in several countries, UX and language quality fell short.
Solution
A Next.js multilingual site with next-intl and a structured way to manage translation data.
Results
Time on site up 2.5× / bounce rate down 30% / better multilingual SEO.
Tech Stack
Partner onboarding website
2024.06
Problem
Onboarding partners ran over email, which was inefficient.
Solution
A PHP-based partner registration and approval system.
Results
Registration steps cut 60% / 30+ partners acquired.
Tech Stack
Savings app landing page
2023.08 ~ 2023.10
Problem
Acquiring new users and building brand awareness both fell short.
Solution
An interactive design with animation-driven CTAs, linked to an event page.
Results
8,000+ downloads / brand searches up 3×.
Tech Stack
Interactive web content
2023.06
Problem
Static pages kept visitors for too short a time.
Solution
Applied animation effects and strengthened interactive elements.
Results
400+ visitors / average time on page up 2.8×.
Tech Stack
Why Choose STAR-T?
High-performance websites using the latest technology stack
Perfect responsive design on all devices
Improved search engine exposure through SEO optimization
Enhanced security and stable service provision
Scalable architecture design
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We provide the best solutions based on 29 successful web development experiences
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