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Lenny Lin
Mid-Level Full-Stack Software Engineer specializing in cloud, distributed systems, and LLM apps
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About
Built and owned a hackathon project (Gritto) with a Python/FastAPI backend that routes user text through a sequence of Gemini agents to produce structured JSON outputs. Has hands-on production deployment experience using Docker/Docker Compose, GitHub Actions CI/CD, AWS App Runner, MongoDB, and secrets management (Doppler + migration to AWS Secrets Manager), plus implemented a chat-like experience via multiple HTTP requests when SSE wasn’t viable.
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Key Strengths
- End-to-end ownership of a FastAPI backend (architecture, implementation, debugging, deployment)
- Designing LLM agent pipelines to return structured/JSON outputs with explicit schemas
- Pragmatic debugging of serialization issues (datetime to JSON) in agent contexts
- Production deployment automation with Docker, GitHub Actions, and AWS App Runner
- Secrets migration/refactor from GitHub Secrets to AWS Secrets Manager with minimal code changes
- Designing CI/CD workflows across multiple services and environments (staging vs production)
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