RAG/Search Engineer (AI Search Quality Improvement) - ContractEnglish summary from Japanese

株式会社HOKUTO

✓ Detailed

Salary

単価8,000-15,000円/時

Location

フルリモートワークフルリモート勤務

Job Type

Outsourcing, Side Jobs, Freelance

Apply on HERP

Role summaryEnglish summary from Japanese

English summary for screening — check the original posting before applying.

HOKUTO is seeking a contract RAG/Search Engineer to improve the quality and speed of their AI search function, which assists medical professionals by searching the latest medical literature. This role is crucial as the company scales and focuses on enhancing product quality and maintainability.

Must-haves

Experience designing and implementing RAG pipelines
Experience operating and tuning Vector Databases (e.g., pgvector)
Experience designing and implementing Hybrid Search
Experience with re-ranking methods
Development experience in Python or TypeScript
Experience using LLM APIs (e.g., Google Gemini, OpenAI, Anthropic)
Experience operating cloud services (AWS/GCP)
Business level Japanese or higher

Nice-to-haves

Experience with NLP/search in the medical/healthcare domain
Experience using AI agent frameworks (e.g., Mastra, LangChain, LlamaIndex)
Experience building quantitative evaluation foundations for search quality
Experience building and maintaining environments for generative AI utilization

About the Company

株式会社HOKUTO

Headquarters

150‐0002 東京都渋谷区渋谷一丁目12番2号クロスオフィス渋谷311

Founded

2016-03

Visit Website

Posted5/14/2026

Sourceherp

RAG/Search Engineer (AI Search Quality Improvement) - ContractEnglish summary from Japanese

Role summaryEnglish summary from Japanese

Must-haves

Nice-to-haves

About the Company

Tech stack

Work style

Other notes