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I’m a senior full-stack engineer with 10+ years of experience designing, developing, and maintaining enterprise web applications, cloud-native platforms, and AI-powered solutions. I enjoy working across the full software lifecycle—turning requirements into scalable systems, building intuitive user experiences, and delivering reliable backend services and APIs. Since 2020, I’ve contributed to PKSHA Technology’s flagship AI products, including PKSHA LLM and AI agent platforms. In these roles, I’ve built scalable frontends with modern JavaScript frameworks, developed backend microservices with Java/Python/Node.js, and helped integrate large language models into production systems for tasks like document analysis, knowledge retrieval, customer support automation, and business workflow execution.…I’m a senior full-stack engineer with 10+ years of experience designing, developing, and maintaining enterprise web applications, cloud-native platforms, and AI-powered solutions. I enjoy working across the full software lifecycle—turning requirements into scalable systems, building intuitive user experiences, and delivering reliable backend services and APIs. Since 2020, I’ve contributed to PKSHA Technology’s flagship AI products, including PKSHA LLM and AI agent platforms. In these roles, I’ve built scalable frontends with modern JavaScript frameworks, developed backend microservices with Java/Python/Node.js, and helped integrate large language models into production systems for tasks like document analysis, knowledge retrieval, customer support automation, and business workflow execution.

Kaito Kobayashi

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

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I’m a senior full-stack engineer with 10+ years of experience designing, developing, and maintaining enterprise web applications, cloud-native platforms, and AI-powered solutions. I enjoy working across the full software lifecycle—turning requirements into scalable systems, building intuitive user experiences, and delivering reliable backend services and APIs. Since 2020, I’ve contributed to PKSHA Technology’s flagship AI products, including PKSHA LLM and AI agent platforms. In these roles, I’ve built scalable frontends with modern JavaScript frameworks, developed backend microservices with Java/Python/Node.js, and helped integrate large language models into production systems for tasks like document analysis, knowledge retrieval, customer support automation, and business workflow execution.…I’m a senior full-stack engineer with 10+ years of experience designing, developing, and maintaining enterprise web applications, cloud-native platforms, and AI-powered solutions. I enjoy working across the full software lifecycle—turning requirements into scalable systems, building intuitive user experiences, and delivering reliable backend services and APIs. Since 2020, I’ve contributed to PKSHA Technology’s flagship AI products, including PKSHA LLM and AI agent platforms. In these roles, I’ve built scalable frontends with modern JavaScript frameworks, developed backend microservices with Java/Python/Node.js, and helped integrate large language models into production systems for tasks like document analysis, knowledge retrieval, customer support automation, and business workflow execution.

Available to hire

I’m a senior full-stack engineer with 10+ years of experience designing, developing, and maintaining enterprise web applications, cloud-native platforms, and AI-powered solutions. I enjoy working across the full software lifecycle—turning requirements into scalable systems, building intuitive user experiences, and delivering reliable backend services and APIs.

Since 2020, I’ve contributed to PKSHA Technology’s flagship AI products, including PKSHA LLM and AI agent platforms. In these roles, I’ve built scalable frontends with modern JavaScript frameworks, developed backend microservices with Java/Python/Node.js, and helped integrate large language models into production systems for tasks like document analysis, knowledge retrieval, customer support automation, and business workflow execution.

Skills

Experience Level

Expert

Expert

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Intermediate

Work Experience

Senior Full Stack Engineer at PKSHA Technology

February 1, 2024 - April 1, 2026

Contributed to the design and development of PKSHA LLM and AI agent platforms, building scalable AI applications for enterprise needs such as customer support automation, internal knowledge retrieval, document analysis, and task/workflow execution through natural language interactions. Implemented scalable frontends using React, Next.js, Angular, TypeScript, and modern JavaScript; developed backend services and reusable REST APIs/microservices using Java, Python, and Node.js. Collaborated with AI researchers and machine learning engineers to integrate LLMs into production systems, ensuring reliable inference and efficient request processing. Participated in system architecture reviews and implemented asynchronous processing and background job execution for document indexing, batch analysis, and workflow automation. Optimized performance through caching strategies, database query improvements, and API response time tuning, using PostgreSQL, MongoDB, and Redis. Managed cloud deployments

Senior Full Stack Engineer at Rippling

November 1, 2020 - January 1, 2024

Worked on cloud-based workforce management software supporting HR, payroll, benefits, identity management, and IT operations for businesses of all sizes. Developed customer-facing web applications using React, TypeScript, and modern JavaScript; built backend services with Node.js and Java for payroll, employee management, and authentication systems. Designed and maintained RESTful APIs used by internal services and third-party integrations, collaborating with cross-functional teams to implement new product features. Improved performance by optimizing frontend rendering, backend services, and database interactions. Participated in Agile development (sprint planning, code reviews, and technical discussions), supported cloud deployments on AWS, and maintained code quality via unit/integration testing and peer reviews.

Full Stack Developer at Concentrix

July 1, 2016 - February 1, 2020

Developed responsive web applications using Angular, React, JavaScript, HTML5, and CSS3. Built backend services and REST APIs using Java, PHP, and ASP.NET; designed and maintained relational databases using MySQL and PostgreSQL. Enhanced existing enterprise applications by implementing new features and resolving production issues. Collaborated with senior developers across the software development lifecycle, assisting with application testing, debugging, and performance optimization. Participated in Agile ceremonies, code reviews, and continuous improvement initiatives.