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softdevx15/README.md

👋 Hi, I'm Yucheng Jin

🚀 Senior Full-Stack & AI-Driven Developer
📍 Lewisville, TX | ✉️ [email protected] | 📱 +1 (325) 999-7679


🧠 About Me

I’m a Senior Full Stack Developer with over 10 years of experience designing, developing, and deploying scalable web applications, AI-powered solutions, and decentralized applications (dApps).

I specialize in bridging AI, modern web stacks, and cloud-native architectures to build intelligent, performant, and secure software. My expertise spans frontend and backend engineering, machine learning integration, and DevOps automation.

I’m passionate about staying ahead of emerging technologies—especially AI, LLMs, and Web3—to deliver innovative and future-ready solutions.


⚙️ Core Technical Expertise

Frontend:
React • Next.js • Vue.js • Angular • React Native • Electron.js • TailwindCSS

Backend:
Node.js • Express • NestJS • LoopBack • FastAPI • Django • Flask

AI / ML:
OpenAI API • Hugging Face • TensorFlow • NLP • Recommendation Systems

Database:
MySQL • PostgreSQL • MongoDB • Redis • DynamoDB • Firebase

DevOps & Tools:
Docker • Kubernetes • Jenkins • CI/CD Pipelines • AWS • GCP

Testing:
Cypress • Playwright • Selenium • React Testing Library

T3 Stack Expertise:
TypeScript • tRPC • Zod • TailwindCSS • Next.js


💼 Professional Experience

Senior Full Stack Engineer — Hoopla Digital

📅 May 2021 – July 2025

  • Spearheaded the redesign of the core system architecture using Vue.js and NestJS, improving scalability and reducing load time by 40%.
  • Migrated from a monolithic to a microservices architecture with Docker and Kubernetes, achieving zero downtime.
  • Developed AI-powered recommendation systems using OpenAI and Hugging Face, improving user engagement and retention.
  • Implemented LLM-based chatbots and assistants to streamline customer support and internal developer tools.
  • Built predictive analytics dashboards with Python and TensorFlow, reducing manual data analysis by 40%.
  • Led frontend optimization initiatives that reduced JavaScript bundle size by 20%.
  • Created tRPC + Zod type-safe API layers for Next.js apps, improving maintainability and reliability.

Full Stack Developer — BR Softech PVT. LTD.

📅 Dec 2017 – Apr 2021

  • Developed and deployed 25+ eCommerce websites and custom platforms using React.js and Node.js.
  • Led a 15-member web team to design and maintain scalable web applications.
  • Integrated crypto payment gateways and wallet authentication (MetaMask, WalletConnect) to enable Web3 commerce.
  • Designed APIs for real-time crypto price tracking and token-based loyalty systems.
  • Improved overall API performance by 25% through optimization and caching.

Software Engineer Intern — Movistar

📅 Dec 2015 – Nov 2017

  • Built a customer experience monitoring app adopted by 7 clients.
  • Improved overall code quality through structured reviews, reducing support tickets by 25%.
  • Developed RESTful web services that increased eCommerce sales by 50%.
  • Migrated legacy systems to Java + MySQL, enhancing scalability and performance.
  • Conducted data analysis to identify and mitigate business risks.

🎓 Education

B.S. in Computer Science
Hong Kong University of Science and Technology — May 2015


🧩 Recent Focus

  • 🤖 AI Integration — LLMs, chatbots, and recommendation systems
  • 🧱 Full Stack Type Safety — leveraging the T3 stack (TypeScript, tRPC, Zod, Next.js)
  • ☁️ Cloud-Native Architectures — Docker, Kubernetes, CI/CD automation
  • 🪙 Web3 — dApps, wallet integrations, and smart contract interactions

✨ “Building scalable systems that think, adapt, and deliver real impact.”

⭐ Feel free to follow or collaborate — always open to discussing AI-driven apps, modern web engineering, and Web3 innovation.

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