【Secret Computation】Fullstack Engineer【LLM】

LLM, NLP, Voice Processing | Data Science, Data Engg | Web, Mobile App (Frontend / Backend)

Location	Shibuya-ku, Tokyo
Company	A startup providing secret-calculation-based data security and AI architecture design technology. Owns unique strength such as inter-business data linkage while keeping data secret. Year of foundation: 2016 Capital: JPY 100M Workforces: 40+
Job Description	1. Implementation of the web service infrastructure for the company's own secret computation p roducts and contracted projects under development 2. Development of React/TypeScript front-end and FastAPI/Python back-end 3. Data modeling/search infrastructure development using PostgreSQL, Qdrant, and OpenSearch 4. Design and operation of LLM/RAG system using OpenAI and Azure OpenAI ecosystem 5. Implementation of privacy-preserving ML inference pipeline using homomorphic cryptograph y libraries (CKKS/TFHE, etc.) 6. Microservice operation with Docker/Kubernetes, CI/CD with GitHub Actions + Terraform 7. Member code review, test automation, performance monitoring
Requirement	Must have: - 3+ years of web application development experience (front + back end) - Working experience with React / TypeScript or similar SPA frameworks - Experience of developing APIs in Python such as FastAPI - Experience with RDBMS (PostgreSQL) and Docker container operations - Team development experience using Git/GitHub - Experience with AWS development (EKS/ECS, RDS, Lambda, etc.) Nice to have: - Microservice design and operation with Kubernetes - Experience in implementing vector and full-text search engines such as Qdrant / OpenSearch - Experience in building RAGs for LLM - Experience with homomorphic cryptography libraries - Experience in building CI/CD
English Level	Business level
Japanese Level	Daily conversational level or higher
Employment Type	Permanent

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