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Mickey Liu

@mickeyliu

Senior software engineer specializing in scalable AI platforms, distributed systems, and cloud-native services that automate workflows.

United States

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What I'm looking for

I’m looking to build cloud-native, distributed AI systems and agent workflows end-to-end—strong reliability, observability, and measurable impact. I want to ship practical RAG/LLM solutions that reduce manual effort and scale safely.

I’m a Senior Software Engineer with 10+ years of experience building scalable AI platforms and cloud systems across fintech, enterprise SaaS, and social media. I focus on turning complex AI workflows into reliable, production-ready systems.

At Notion, I helped build autonomous AI agent infrastructure for multi-step task execution across documents, databases, and integrations. I implemented multi-LLM pipelines (GPT-4, Claude 3, Gemini), routing work for research, summarization, and workflow automation—reducing manual effort by ~25%.

I design RAG pipelines that combine vector search (FAISS/pgvector) with workspace knowledge retrieval, powering document Q&A and contextual meeting summarization. I also build backend services in Python and Golang plus TypeScript/Node.js APIs, and I deploy pipelines on AWS using EC2, S3, and RDS.

Earlier, I built LLM orchestration for AI recruiting agents, and I contributed to Twitter Spaces’ backend infrastructure for real-time audio at massive scale. I bring strong distributed systems and observability practices to every stack—so the systems perform under load and stay maintainable.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Notion

Apr 2024 - Present (1 year 11 months)

Contributed to building autonomous AI agent infrastructure for multi-step task execution across Notion documents, databases, and integrations. Implemented multi-LLM execution pipelines (GPT-4, Claude 3, Gemini) and RAG using FAISS/pgvector, reducing manual effort by ~25% and improving answer accuracy by ~30%.

Retrieval Augmented Generation (RAG)Faiss Pgvector Python Golang React TypeScript Dashboards

Senior Software Engineer

Moonhub

Jan 2023 - Jan 2024 (1 year)

Built multi-LLM orchestration pipelines for AI recruiting agents integrating GPT-4, Claude 3, and Gemini to automate candidate research, summarization, outreach drafting, and hiring workflows. Developed LLM-powered candidate intelligence and RAG features, improving sourcing efficiency by ~35% and response accuracy by ~30%.

Orchestration Retrieval Augmented Generation (RAG)Python Golang Vector Search

Senior Software Engineer

Twitter

Jan 2021 - Jan 2023 (2 years)

Contributed to backend infrastructure powering Twitter Spaces with real-time audio conversations across millions of concurrent users. Designed distributed services (Scala/Java/Python), optimized streaming pipelines with Kafka and Redis (reducing message latency by ~30%), and implemented live speech-to-text using ASR models (Wav2Vec2 and Conformer).

Distributed Systems Scala Java Python Real Time Event Orchestration Kafka Redis Kubernetes

Software Engineer

Appzen

Nov 2018 - Jan 2021 (2 years 2 months)

Developed enterprise finance dashboards for AI-flagged expense report review, audit results, and invoice processing workflows. Built performant React/TypeScript UI with Redux and deployed event-driven AWS processing services, reducing manual finance review by ~40%.

React TypeScript Redux Document Processing