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I'm Saburo Hayashi, an AI-focused full stack engineer with over 9 years of experience designing and shipping agentic AI systems in production. I specialize in building multi-layer AI architectures, tool-driven agents, and RAG pipelines grounded in real-world data. I lead end-to-end development for customer-facing AI assistants, creative intelligence platforms, and trading analytics, backed by microservices, real-time ingestion, and scalable cloud infrastructure. I combine frontend, backend, data, and deployment skills to own products from concept to production.…I'm Saburo Hayashi, an AI-focused full stack engineer with over 9 years of experience designing and shipping agentic AI systems in production. I specialize in building multi-layer AI architectures, tool-driven agents, and RAG pipelines grounded in real-world data. I lead end-to-end development for customer-facing AI assistants, creative intelligence platforms, and trading analytics, backed by microservices, real-time ingestion, and scalable cloud infrastructure. I combine frontend, backend, data, and deployment skills to own products from concept to production.

Saburo Hayashi

Full Stack Developer, AI Engineer, Web Developer, +2

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I'm Saburo Hayashi, an AI-focused full stack engineer with over 9 years of experience designing and shipping agentic AI systems in production. I specialize in building multi-layer AI architectures, tool-driven agents, and RAG pipelines grounded in real-world data. I lead end-to-end development for customer-facing AI assistants, creative intelligence platforms, and trading analytics, backed by microservices, real-time ingestion, and scalable cloud infrastructure. I combine frontend, backend, data, and deployment skills to own products from concept to production.…I'm Saburo Hayashi, an AI-focused full stack engineer with over 9 years of experience designing and shipping agentic AI systems in production. I specialize in building multi-layer AI architectures, tool-driven agents, and RAG pipelines grounded in real-world data. I lead end-to-end development for customer-facing AI assistants, creative intelligence platforms, and trading analytics, backed by microservices, real-time ingestion, and scalable cloud infrastructure. I combine frontend, backend, data, and deployment skills to own products from concept to production.

Available to hire

I’m Saburo Hayashi, an AI-focused full stack engineer with over 9 years of experience designing and shipping agentic AI systems in production. I specialize in building multi-layer AI architectures, tool-driven agents, and RAG pipelines grounded in real-world data.

I lead end-to-end development for customer-facing AI assistants, creative intelligence platforms, and trading analytics, backed by microservices, real-time ingestion, and scalable cloud infrastructure. I combine frontend, backend, data, and deployment skills to own products from concept to production.

Skills

Experience Level

Expert

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Intermediate

Language

Javanese

Advanced

Work Experience

Full Stack AI Software Engineer at Vidmob

February 1, 2025 - January 1, 2026

Architected an Agentic Creative Intelligence System linking ad creative signals to performance outcomes. Designed a multi-layer AI data architecture (Memory, Vector Knowledge, Structured Metrics) enabling reliable agent reasoning and analytics at scale. Implemented RAG pipelines over onboarding/docs and routed numeric/categorical analysis through MongoDB, with new schema for creative analysis (emotion, tone, hook type, CTA, value props, scene count) and structured vibe tagging for filtering. Enabled agentic actions via structured outputs (ranked insights, correlations, next-step recommendations) for automated reporting and workflows. Grounded responses in retrieved context to reduce hallucinations and built fallbacks when confidence is low.

Software Engineer at SumatoSoft

August 1, 2019 - February 1, 2021

Developed e-commerce platforms using a microservice-based, event-driven architecture; designed backend services and event flows to decouple domains, improving reliability and scalable components. Built interactive data visualization dashboards for client insights and delivered full-stack features across multiple client projects with an emphasis on clean service boundaries and reusable APIs.

Software Engineer at InPost

September 1, 2016 - June 1, 2019

Developed internal logistics and parcel management systems for high-volume operations. Built frontend applications with pixel-perfect UI and accessibility; implemented backend services in PHP and Node.js, integrating multiple internal systems and third-party services for end-to-end parcel flows. Optimized performance and designed APIs/data models for large-scale transactional and tracking data.