Justin Chen · New York, NY
AI Software
Engineer
I build LLM-powered products — document pipelines, trading agents, and AI web apps — from prototype to production on AWS.
Python · TypeScript · Claude API · FastAPI · AWS CDK · Next.js
01 / About
Engineer at the intersection of LLMs and production systems
I'm Justin — a software engineer who specializes in turning large language models into reliable, shippable products. I build intelligent document-processing pipelines, design scalable AWS cloud architectures, and create AI-powered web apps: multi-tenant SaaS platforms with real-time data, and automated evaluation systems built on Claude and other LLM providers.
I like the hard part — the seam where language models meet real production engineering. Beyond full-time work, I also take on select freelance and consulting projects for teams and local businesses looking to ship AI features.
02 / Work
Selected work
A few projects that show how I take LLM-powered systems from idea to production.
Cura
AI résumé tailoring
AI-powered résumé platform that generates job-specific résumés from a master profile using the Claude API — with intelligent content curation, keyword optimization, inline AI suggestions, and PDF parsing via Claude Vision.
Alpaca Trading Agent
Algorithmic trading system
End-to-end algorithmic trading system in Python on the Alpaca REST/WebSocket API, deployed to AWS EC2 as a persistent systemd service with a Dash monitoring dashboard and an agentic CI/CD pipeline running Claude Code in rootless Podman containers.
Predict-Market-Bot
Multi-LLM prediction markets
Automated prediction-market trading system scanning Kalshi and Polymarket, using a multi-LLM ensemble (Anthropic, OpenAI, Gemini) and XGBoost with Kelly-criterion position sizing. Deployed as microservices on AWS EC2 with Prometheus/Grafana observability.
03 / Stack
Tools I build with
Languages
Frameworks
Cloud & Infra
AI / LLM
04 / Experience
Where I've worked & studied
Experience
Software Engineer
Jefferies Group LLC · Jersey City, NJ
- Consolidating and automating finance and HR data pipelines from Oracle PeopleSoft to Snowflake using Claude Code and Snowflake Openflow.
Software Engineer
The Evaluation Company · New York, NY
- Built LLM-powered document-processing pipelines integrated with Salesforce and AWS EC2, automating transcript evaluation and data extraction for 200+ daily cases and reducing vendor costs by $93K/month.
- Deployed AWS CDK infrastructure for a multi-access portal; implemented CI/CD, RDS, S3, ElastiCache, and ECS/App Runner with full networking and security configuration.
- Built a FastAPI backend with SQLAlchemy ORM and async task processing via ARQ and Redis for multi-LLM document classification and PDF generation workflows.
Software Engineering Intern
Colgate-Palmolive · Piscataway, NJ
- Developed shopping cart and mini-cart components in AngularJS and TypeScript, resolving 25+ Jira tickets and improving UX across desktop and mobile.
Education
Stevens Institute of Technology
Master of Engineering · Computer Engineering
Hoboken, NJ
Stevens Institute of Technology
Bachelor of Engineering · Computer Engineering
Hoboken, NJ
05 / Contact
Let's build something
Open to full-time roles and available for select freelance and consulting projects. The fastest way to reach me is email.