hiro-dev-lab

hiro-dev-lab is the portfolio site of an individual IT engineer named hiro who provides freelance-style services in web application and business system development. The engineer works full-stack using Java, Python, and TypeScript, handling requirements definition, design, development, testing, and operations with a particular strength in backend development.

The process begins with a consultation where hiro helps clients organize requirements from the user and operator perspectives. He then moves to design and development using a full-stack approach that covers frontend, backend, and infrastructure. This one-person operation handles everything from authentication and payment integration to data visualization and external API connections.

One specific service offered is the development of AI systems that embed generative AI into web services or business flows. This includes RAG-based document search, AI chatbots, and text generation to automate tasks like information extraction and report writing. The site also lists work in data engineering alongside these AI capabilities.

The business has been operating since 2021 when hiro transitioned from eight years as a local government employee to an IT engineer. He has since participated in five system development projects, taking on roles such as project manager and database administrator. His experience spans from 2011 to the present, covering everything from subsidy procedures to full-stack development.

The technology stack explicitly includes Java, Python, and TypeScript for both frontend and backend development. Frontend tools mentioned are React and Next.js, while backend frameworks include Spring and Django. Database options range from SQL and PostgreSQL to Oracle, and infrastructure tools involve AWS, Linux, Docker, and Git.

Clients can get started by contacting hiro-dev-lab via the contact form on the website. The site accepts inquiries for system introductions, web application development, AI implementation, and business commission development support. Even if requirements are not yet solidified, hiro offers to organize them from the user and operator viewpoints.

The business serves clients who need web applications and business systems, ranging from membership and customer management systems to inventory and reservation management. It also targets organizations looking for AI integration, such as internal document search or inquiry response chatbots. The scope includes everything from small personal projects to larger business system developments.

The site lists several completed works including an AI quote estimation system, a system to increase Google reviews, and a campsite reservation system. Other examples include a fruit picking reservation system and a case management system. These projects demonstrate a range of capabilities from simple web production to complex AI integrations.

The official website of hiro-dev-lab is hiro-dev-lab.xyz.

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