Senior Software & AI Engineer with extensive experience designing and building scalable backend systems, AI-driven platforms, and workflow automation solutions. Expert in Python, Node.js, cloud-native architectures, and modern data pipelines, with a strong focus on reliability, performance, and real-world AI adoption. Proven ability to bridge complex engineering systems with business goals, collaborate across teams, and deliver high-impact, production-ready solutions.

Yamauchi Kouhei

PRO
5.0 (1 review)

Senior Software & AI Engineer with extensive experience designing and building scalable backend systems, AI-driven platforms, and workflow automation solutions. Expert in Python, Node.js, cloud-native architectures, and modern data pipelines, with a strong focus on reliability, performance, and real-world AI adoption. Proven ability to bridge complex engineering systems with business goals, collaborate across teams, and deliver high-impact, production-ready solutions.

Available to hire

Senior Software & AI Engineer with extensive experience designing and building scalable backend systems, AI-driven platforms, and workflow automation solutions. Expert in Python, Node.js, cloud-native architectures, and modern data pipelines, with a strong focus on reliability, performance, and real-world AI adoption. Proven ability to bridge complex engineering systems with business goals, collaborate across teams, and deliver high-impact, production-ready solutions.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
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Language

Japanese
Fluent
English
Advanced

Work Experience

Remote AI Software Engineer at SENPEX
July 1, 2025 - Present
Designed and deployed autonomous agent-based AI systems to automate complex workflows, reducing processing time for key business processes by 20%. Developed and optimized AI services using ML models and frameworks like LangChain and transformers, improving predictive analytics accuracy and scalability by 30%. Collaborated with cross-functional teams to productionize AI solutions, improving system performance and reducing real-time data processing errors by 15%. Implemented agentic architectures enabling autonomous reasoning and interaction, reducing manual intervention by 25% in client-facing workflows. Monitored production AI solutions to ensure 99.9% uptime during critical periods. Engineered end-to-end agent orchestration pipelines enabling autonomous task delegation and scalability. Implemented RAG (Retrieval-Augmented Generation) pipelines with vector databases to boost response accuracy for knowledge-intensive tasks. Designed fault-tolerant microservices with robust monitoring an
Senior Software Engineer at Money Forward
October 1, 2023 - June 1, 2025
Designed and implemented microservices and APIs to integrate AI-driven financial tools, resulting in a 25% improvement in data processing efficiency and a 10% increase in user satisfaction. Collaborated with data scientists and engineers to build scalable ML models that enhanced product features, contributing to a 15% increase in customer retention. Led the development of agent-based workflows to automate financial data processing, reducing manual processing times by 30% and enabling faster client transactions. Integrated generative AI solutions that improved automation of customer support processes, cutting response times by 20% and increasing engagement. Implemented cloud-based solutions on AWS and GCP, optimizing deployment processes and reducing infrastructure costs by 12% through efficient resource management. Built automated evaluation and benchmarking tools for LLM outputs, improving model reliability. Integrated AI systems with existing enterprise APIs and data sources, enablin
Senior Software Developer at Daiso Higashihiroshima
April 1, 2020 - September 1, 2023
Led the backend development of enterprise applications, incorporating machine learning models to enhance product recommendations and increase sales conversions by 18%. Utilized frameworks like AutoGen and Bedrock to develop agentic systems for automating inventory management, resulting in a 15% reduction in stockouts and improved supply chain efficiency. Collaborated with teams to implement intelligent automation, boosting operational efficiency and reducing manual data entry by 25%. Developed and deployed microservices for cloud-based applications, improving system performance and reducing downtime by 10%. Designed and maintained CI/CD pipelines for AI services, ensuring safe rollouts and continuous delivery of model updates. Conducted performance tuning on large-scale pipelines, increasing throughput by 25%. Mentored junior and mid-level engineers on AI system design, agentic workflows, and scalable infrastructure patterns.
Junior ASP.NET Developer at Marunouchi Innovation Partners Co., Ltd.
October 1, 2018 - March 1, 2020
Developed and maintained ASP.NET applications, contributing to a 15% reduction in system bugs and improving overall software stability. Integrated third-party services into SaaS offerings, improving scalability and reducing API latency by 12%. Gained foundational skills in coding, deployment, and system architecture, helping streamline development processes and boost team productivity. Collaborated with QA teams on unit and integration testing, ensuring reliable application behavior before release. Documented architectural patterns, best practices, and operational guidelines for AI systems, and developed reusable internal frameworks for agent-based applications, reducing development time for new features by 30%.

Education

Bachelor's Degree in Computer Science at Shizuoka University
January 1, 2014 - January 1, 2018

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Financial Services, Retail, Professional Services
    paper Project Manager of Enterprise Automation System

    I built Enterprise Automation System for Senpex from scratch from infrastructure, developing, and deploying.

    uniE621 Project Manager of Enterprise Automation System
    I built Enterprise Automation System for Senpex from scratch from infrastructure, developing, and deploying.
    uniE621 Project Manager of Enterprise Automation System
    I built Enterprise Automation System for Senpex from scratch from infrastructure, developing, and deploying.
    uniE621 Project Manager of Enterprise Automation System
    I built Enterprise Automation System for Senpex from scratch from infrastructure, developing, and deploying.