You will get AI-Built Codebase Rescue — From Vibe Code to Production-Ready Architecture

Junkyu J.Status: Offline
Junkyu J.

Let a pro handle the details

Buy Generative AI services from Junkyu, priced and ready to go.
Junkyu J.Status: Offline
Junkyu J.

Let a pro handle the details

Buy Generative AI services from Junkyu, priced and ready to go.

Project details

Built your app with AI but struggling to maintain, debug, or scale it? You're not alone. AI tools like Cursor, Copilot, and Claude can generate working code fast — but without proper architecture, the result is often fragile, untestable, and impossible to extend.

I take AI-generated codebases and transform them into production-grade systems that you and your AI tools can maintain long-term.

What you get:
 • Codebase audit with a clear report on issues, risks, and priorities
 • Clean Architecture restructuring so changes don't break unrelated features
 • Test coverage for core business logic
 • AI-ready documentation (CLAUDE.md / cursor rules) so your AI tools understand the codebase
 • Handoff package so you or another developer can continue without guesswork

13 years of software development experience focused on system architecture. I think in terms of pipelines, tradeoffs, and failure modes — not just features. I build things so another engineer can pick them up.
AI Algorithms
Large Language Model
AI Applications
AI Content Creation, AI Mobile App Development, AI-Generated Code
AI Development Language
Python
AI Tools
GitHub Copilot
AI Models
ChatGPT, GPT-4
What's included
Service Tiers Starter
$500
Standard
$3,000
Advanced
$10,000
Delivery Time 3 days 21 days 56 days
Number of Revisions
123
AI Model Integration
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Batch Normalization
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Database Integration
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Detailed Code Comments
Image Upscaling
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MLOps
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Model Deployment
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Model Documentation
Model Monitoring
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Model Testing & Optimization
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Model Tuning
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Natural Language Processing
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NLP Tokenization
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Pre-Training
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Prompt Engineering
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Setup File
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Source Code
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Frequently asked questions

Junkyu J.Status: Offline

About Junkyu

Junkyu J.Status: Offline
AI Mobile Architect | Claude/GPT on iOS | 14 yrs Production Engineer
Goyang-si, South Korea - 7:30 am local time
I build production AI features for iOS — Claude and OpenAI/GPT pipelines, on-device CoreML, and the architecture that keeps them stable as you scale.

14 years building production apps across banking (Shinhan Bank), logistics (Daehan Tongwoon), public transit (Singapore SMRT, 4.4★), and consumer products (Insaticon, #3 Entertainment, 100K DAU).

What I bring beyond code:
• AI integration — Claude API, OpenAI/GPT, on-device CoreML, RAG flows for mobile, and AI-assisted development workflows
• Architecture that survives growth — clean layers, testable modules, no rewrites when your team doubles
• App Store navigation — direct experience with reviewer communication and sensitive-category approvals
• Data engineering background — Kafka real-time ETL, BigQuery KPI automation (not typical for an iOS engineer)

I work through written documentation — clear specs, async updates, structured PRs. This keeps projects on track across time zones.

Currently available 30+ hrs/week.

Steps for completing your project

After purchasing the project, send requirements so Junkyu can start the project.

Delivery time starts when Junkyu receives requirements from you.

Junkyu works on your project following the steps below.

Revisions may occur after the delivery date.

Codebase audit

review architecture, identify issues, deliver written report with priorities

Refactoring

restructure code, add tests, create AI-ready documentation

Review the work, release payment, and leave feedback to Junkyu.