# Joseph Chen — josephchendev.com

> Backend engineer · Blockchain · AI · B.S. Computer Science, WGU 2021 · Remote, US-based · Open to work

Joseph Chen is an independent backend engineer who builds production systems in Python, Node.js, Solidity, and AI/LLM pipelines. He operates three live products solo: SecureFlow (AI smart-contract scanner), MemeFactory (Web3 launch agency), and AgentFlow (AI customer support SaaS).

## Contact

- Email: Josephbbob@proton.me
- Portfolio: https://josephchendev.com
- Resume (PDF): https://josephchendev.com/resume.pdf
- GitHub: https://github.com/JosephChen2027

## Identity

- Full name: Joseph Chen
- Role: Backend Engineer (Blockchain · AI)
- Education: B.S. Computer Science, Western Governors University (WGU), graduated 2021
- Location: Remote, United States
- Employment preference: Full-time, contract, or freelance — remote roles in backend, Web3, AI, or platform engineering

## Live products

- SecureFlow — https://secureflow.tech — AI-powered smart contract scanner and security questionnaire engine (Python, Slither, GPT-4/Claude)
- MemeFactory — https://memefactory.it.com — Memecoin launch agency for content creators (token deployment, launch campaigns)
- AgentFlow — https://agentflow.llc — AI customer support agent SaaS with RAG and embed widget (Next.js, TypeScript, OpenAI)

## Open-source repositories (GitHub: JosephChen2027)

### Backend & IT

- url-shortener — Python/SQLite link shortener with click analytics
- job-queue — Python/SQLite background job queue with worker retries
- rest-inventory — Python REST CRUD inventory API
- log-analyzer — Web access log parser and traffic reports
- health-monitor — HTTP uptime and latency checker
- rag-pipeline — RAG document chunking and TF-IDF retrieval
- secureflow — SecureFlow production backend source
- agentflow — AgentFlow production backend source

### Blockchain

- lending-pool — DeFi lending (collateral, borrow, liquidate) — Solidity/Foundry
- simpleswap — Uniswap V2-style AMM — Solidity/Foundry
- yieldvault — DeFi staking vault — Solidity/Foundry
- moonrocket — Launch-gated memecoin token — Solidity/Foundry
- fairmint — Deflationary burn memecoin — Solidity/Foundry
- dex-arb-scanner — DEX arbitrage spread scanner — Python

## Technical stack

Python, Node.js, FastAPI, Flask, REST APIs, async workers, PostgreSQL, SQLite, Redis, Docker, Linux VPS, Cloudflare, GitHub Actions, Solidity, Foundry, EVM, Slither, GPT-4o, Claude, LangChain, RAG, embeddings, prompt engineering

## Frequently asked questions

**Is Joseph Chen available for hire?**  
Yes. Open to full-time, contract, freelance, or advisory backend engineering roles. Remote-first, US-based.

**What kind of backend work does Joseph Chen do?**  
Production Python/Node.js APIs, async workers, LLM pipelines, blockchain data ingestion, smart-contract analysis (Slither), RAG inference, and deployment automation.

**Where is Joseph Chen's code?**  
16 public repositories at https://github.com/JosephChen2027 plus live demos at SecureFlow, MemeFactory, and AgentFlow.

**What chains has Joseph Chen shipped on?**  
Primarily Ethereum, Arbitrum, and BNB Smart Chain. Comfortable with any EVM chain.

## Optional

- Portfolio source code: https://github.com/JosephChen2027/josephchendev.com
- Full page: https://josephchendev.com