Giao Le Xuan

Software Engineer · Hanoi, Vietnam · Open to remote

Backend engineer focused on search, retrieval, and the systems behind LLM agents. I like owning things end-to-end, from architecture to production, and I build Phileas, an open-source memory layer for LLM agents, in the open.

Experience

Software Developer · Qikify, Hanoi

Jun 2025 – Present
  • Designed, built, and shipped Bridz end-to-end: a multi-tenant customer-feedback platform (Laravel + Vue) replacing Canny across Qikify and Teeinblue (~3,000+ engaged users).
  • Built its core platform features: a vote-velocity trending algorithm, Brevo-backed notifications, and SSE-based real-time task streaming over Redis BLPOP.
  • Built a centralized Typesense search service indexing ~2–3M entities, owning the indexing pipeline and query/filter design.
  • Built a generic soft-delete / restore layer across nearly all customer-facing models, eliminating accidental-deletion data loss.
  • Implemented rate limiting on Shopify-storefront endpoints, using encrypted-header anonymous identity to harden anti-abuse.

Backend Developer Intern · PIP Vietnam Technology

Nov 2024 – Jan 2025
  • Built and maintained backend services in ExpressJS / TypeScript / MongoDB.
  • Designed REST APIs from product requirements.

Projects

Phileas

Python · MCP · MIT

Open-source local-first long-term memory for LLM agents

  • Local-first memory layer that any LLM reads and writes over MCP, so context survives across sessions and tools instead of resetting each conversation.
  • Model-agnostic hybrid retrieval over BM25, semantic vectors, and knowledge-graph search, re-ranked with a local cross-encoder; runs on-device with no external API key.
  • Designed and shipped solo, end-to-end: retrieval engine, MCP server, ingestion pipeline, and CLI, published to PyPI under MIT.
  • Used daily as my own working memory.

Education

Bachelor of Computer Science

Hanoi University of Science and Technology

Oct 2021 – Sep 2025

Skills

Languages
PHP, Python, JavaScript/TypeScript, SQL
Frameworks
Laravel, Vue
Data & search
PostgreSQL, Redis, Typesense; vector and graph stores
LLM systems
MCP, hybrid retrieval, embeddings and reranking
Infra
Docker, Linux, CI/CD, Cloudflare

Languages

Vietnamese
Native
English
Working proficiency