Jeff Jin
Sr Fullstack Software Engineer
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Shenyang, China
https://github.com/codevet210
@miracleowner210
jeffj9616
Profile
Senior Full-Stack Software Engineer with 10+ years of hands-on experience designing, developing,
and deploying scalable, high-performance applications across backend, frontend, Web3, and AI
domains. Adept at building solutions from concept to production, with a strong emphasis on clean
architecture, maintainability, and performance. Continuously driven by curiosity and a passion for
emerging technologies, I stay ahead of industry trends and thrive on turning complex, ambitious
ideas into reliable, impactful software products.
Professional Experience
Founding Engineer
MatiLabs.ai
Developed a cutting-edge AI-driven platform for business analysis and
investment aid, utilizing Python, FastAPI, OpenAI, React/NextJS and
Angular12+.
Oversaw the deployment of multiple microservices to AWS Lambda,
managing cloud storage solutions such as Egnyte, Box, Microsoft
OneDrive, and SharePoint.
Designed various Jupyter notebooks for business analysis tasks, including
stock screening, due diligence, teaser summaries, and dataset creation.
Built Microsoft Addins and an email webhook handling service to
enhance user experience.
11/2024 – 07/2025
United States
Lead Developer
TRIM Agency
Full-Stack Development Expertise: Led and developed multiple full-stack
web applications using TypeScript, React/Next.js/Angular/Vue,
Node.js/Express/NestJS, Python/Django/Fastapi, Php/Laravel and RoR,
transforming business ideas into production-ready platforms.
AI & Cloud-Powered Solutions: Designed and deployed a GenAI-powered
business efficiency tool using Python, LangChain, Azure OpenAI, and
FastAPI, integrated with AWS ECS, DynamoDB, and WebSockets for realtime updates.
Third-Party API Integrations: Integrated complex third-party services
including Stripe, Dwolla, Plaid, QuickBooks, Auth0, and developed
productivity tools like a Slack bot using Harvest, Asana, and BotKit.
01/2022 – 09/2024
United States
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Project Leadership & Monorepo Architecture: Led frontend/backend
development on key projects like Epicure, StreamOS, Dashreel, and Evstry,
utilizing tools like Nx and Turbo for mono repo management, boosting
developer efficiency and code consistency.
Engineered and maintained Web3 applications with smart contract
support on Bitcoin and Ethereum platforms using Web3.js, Ethers.js, and
Solidity.
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Full Stack Developer
Sho.ai
Frontend Development for AI-Powered Brand Platform: Played a key
role in building the beta version of a brand management system using
TypeScript, React/Next.js, and integrated AI technologies.
UI Component System & Design Consistency: Developed a reusable
component library with Radix UI and Tailwind CSS, documented using
Storybook to ensure design consistency and developer efficiency.
Collaborative Web Application Delivery: Worked closely with the team to
deliver a polished, high-quality frontend experience for a startup brand
design tool, focusing on performance and accessibility.
Production-Ready Frontend Deployment: Built and optimized the
production frontend, deploying seamlessly on Vercel for fast and reliable
performance.
CMS Integration with AI Backend: Integrated dynamic content
management features with the AI-powered backend, enhancing the
platform’s flexibility and user experience.
09/2021 – 04/2022
United States
Full Stack Developer
5Loyalty
Cross-Platform Feature Development: Enhanced a SaaS platform for
both web and mobile using React and Ionic, delivering new features to
improve functionality and user experience.
Microservices Integration: Integrated and optimized several
Python/Django/DRF-based microservices to boost performance and
scalability.
Admin Panel Improvements: Upgraded the admin panel to streamline
supplier and client management using Django, improving operational
efficiency.
POS System Implementation: Implemented a secure and reliable POS
system to handle customer payments directly within the application.
01/2021 – 10/2021
United Kingdom
Software Developer
STL PRO.INC
Automation Development: Built and managed automation processes
using Python and Node.js to streamline dropshipping operations and
boost efficiency.
Admin Panel Enhancements: Maintained and enhanced the dropshipping
admin panel with Django, introducing new features to improve usability
and functionality.
Chrome Extension Development: Created multiple Chrome extensions to
scrape merchant and product data from e-commerce platforms, delivering
actionable insights.
01/2019 – 02/2021
United States
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Proxy Management: Handled various proxies, including Luminati, to
bypass captchas and maintain uninterrupted automation workflows.
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Full Stack Developer
Wutzu
Frontend Development for E-commerce Platforms: Led the
development of responsive web and mobile applications for B2B and B2C
users using Firebase, focusing on intuitive UI/UX for both merchants and
customers.
Merchant & Product Management Interface: Took ownership of the B2B
management system's frontend, enabling seamless onboarding of
merchants and efficient product uploads.
Dynamic Product Handling: Developed user-facing tools supported by
backend Python scripts integrated with Firebase, Algolia, and Google Cloud
Storage for real-time product management.
Real-Time Order Tracking Integration: Implemented interactive frontend
components to display real-time order status updates by integrating
multiple services and third-party APIs.
MVP Launch with No-Code Tools: Contributed to rapid MVP development
by blending frontend coding with no-code frameworks to accelerate
delivery without compromising quality.
10/2017 – 12/2018
United Kingdom
Software Developer
Shenyang HONGDI Technology
Hands-on Experience in development: Attended in several web and
mobile app developments in local company using various languages and
frameworks
AI and Machine Learning Projects: Contributed to machine learning and
data science projects
Local Library Management System: Developed local library management
system solely using Php/Laravel
10/2014 – 08/2017
Shenyang, China
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Education
Bachelor's Degree in Computer Science
University of Science and Technology of China
References
Moyi Dang, CEO, MatiLabs.ai-Timothy Hasse, CEO, TRIM Agency-Matthew Brown, Product Owner, Wutzu-Michael Machiah, CTO, Sho.ai-
04/2010 – 09/2014
Skills
Backend
Node/Express/NestJS
Python/Django/DRF/FastAPI/Flask
Php/Laravel
Ruby/Rails
Java/Spring
C#/ASP.NET
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Frontend
Typescript/React/NextJS, Angular12+, Vue
HTML/CSS, TailwindCSS, Scss
AntDesign, MaterialUI, RadixUI, ShadCn
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Database
Relational-postgresql, mysql, sqlite
NonRelational-mongodb
ORM-typeorm, prisma,sqlalchemy, alembic,
Eloquent ORM
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Clouding
AWS(ec2, ecs, lambda, s3, sqs,
dynamodb,elastic-search)
Firebase, Heroku, Supabase
Google Cloud Platform
Microsoft Azure(Onedrive, Addins, Blob
Storage, AzureOpenAI)
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Other
Machine Learning and Data Science
Blockchain(Smart Contracts, Ethereum,
Web3)
No-code framework: Bubble.io
Snowflake and Matillion
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Projects
https://wallet.bigiwallet.io/
Crypto wallet supporting for bitcoin and ethereum network
Perfect system for send/receive, swap, transaction, ticket system of token
Tech stacks: Typescript/React, Supabase, Ether.js, Web3.js
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https://www.gocrew.jp
Team collaboration tool with GenAI and safe data management system using GEN AI
Developed backend integrating with python langchain and Microsoft azure open ai and fastapi
utilizing prompt engineering, data connectors with LLM
Deployed AWS ECS and stored chat history on aws dynamo db, real time updates on chat using
websocket
Tech stacks:Python/FastAPI/LangChain/GenAI/Prompt Engineering, Angular13/React/Next, AWS
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http://evstry.com/
Backend: PHP 8.x, Laravel 10
Auth: Auth0 OAuth2 / OpenID integration for user management
Blockchain Payments: Ethereum payment integration using Web3 PHP SDK
Frontend: Blade templating
Database: MySQL 8.x
Payments: MetaMask wallet interaction, transaction confirmation hooks
Others: Laravel Passport for API token management if needed
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https://sho.ai
Content management system for articles and brand generating system
AI integrated branding manage system
Build reusable elements and cms pages
Tech stacks: Typescript/React/Next, Stitches, RadixUI, Node/Express, Wysiwyg, Vercel
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https://workwelltogether.co
Judge team work ability using psychological method
Recommend system using artificial intelligence
Tech stacks: Python/Django/DRF/Pandas/Scikit-learning, Typescript/React/Ionic
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https://streamos.io
Automate payment using dwolla, quickbooks, plaid and stripe
Developed solid backend for handling integration of multiple 3rd party libraries using
Typescript/Express that are deployed on aws ecs
Managed user interface for real time updates using Typescript/NextJS and Firebase Realtime
Database
Tech stacks:Typescript/React/Next, Node/Express, AWS, Dwolla, Stripe, Plaid, Quickbooks
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