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Leo Martinez

Python developer building async backends with FastAPI, Celery distributed tasks, and high-throughput data processing pipelines.

Location Madrid, Spain Joined Joined on 

Work

Backend Engineer & Python Specialist

Notes from a 2 AM On-Call: browser-use Agent Silently Dropping Sessions Under Concurrent Load

Notes from a 2 AM On-Call: browser-use Agent Silently Dropping Sessions Under Concurrent Load

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3 min read

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Why Your Async FastAPI Server Dies Under Real SSE Load

Why Your Async FastAPI Server Dies Under Real SSE Load

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4 min read
Building Async Financial Agents with FastAPI: Connection Pool Exhaustion and SSE Stream Recovery

Building Async Financial Agents with FastAPI: Connection Pool Exhaustion and SSE Stream Recovery

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4 min read
Notes from a 2 AM On-Call: LangChain Streaming Breaks Under FastAPI Load

Notes from a 2 AM On-Call: LangChain Streaming Breaks Under FastAPI Load

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2 min read
Integrating Hermes Agent into FastAPI: Async Tool Execution and Response Streaming

Integrating Hermes Agent into FastAPI: Async Tool Execution and Response Streaming

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3 min read
Swapping LLM Providers in Production FastAPI Without Rebuilding Your Async Pipeline

Swapping LLM Providers in Production FastAPI Without Rebuilding Your Async Pipeline

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4 min read
Async Python FastAPI Integration with ComfyUI's WebSocket API

Async Python FastAPI Integration with ComfyUI's WebSocket API

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3 min read
Dissecting Open WebUI's FastAPI Architecture: SSE Streaming and Multi-Provider Routing

Dissecting Open WebUI's FastAPI Architecture: SSE Streaming and Multi-Provider Routing

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3 min read
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