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システム係

下手 晴男 (Haruo Shimote)

Data Engineering AWS / BI Process Improvement AI-Driven Development

As your organization's own “systems department”

The name “System Kakari” (システム係, roughly “the systems person”) reflects the idea of an outside engineer who supports your business and its systems as if he were a member of your team. I spent a total of 11 years at Amazon Japan, moving from IT Support Engineer to BI Engineer to Data Engineer, and went independent in 2026.

During those years I covered a wide range of work — building and running both on-premises and cloud infrastructure, data pipelines, BI, and web/desktop application development — and contributed to major cost savings through process improvement and automation. Today, as a sole proprietor, I join client teams under time-and-materials or fixed-scope (contract development) agreements and see projects through from design and implementation to incident response and stable operations. I also use AI-driven development in my everyday work.

Engagement Terms

Contract types
Both time-and-materials and fixed-scope (contract development). I go deep on one project at a time, handling everything from design to operations.
Availability
Fully remote; five days a week preferred. Three to four days a week is possible if needed.
Main areas
Web application backends, data pipelines, AWS data platforms and BI, and workflow automation / improvement tools.
Note
I carefully assess projects in areas that directly compete with my former employer Amazon, or where reuse of its internal methods could be suspected.
Consult

Do any of these sound familiar?

  • A 16-bit pixel-art engineer visits a workplace struggling without in-house IT staff

    No IT person on staff.

    Hiring one is hard, and you don't know who to turn to

  • 16-bit pixel art of a limited budget being split into small implementation steps

    The budget is limited.

    You wonder whether it can really be done for this amount

  • 16-bit pixel art of an independent engineer catching a small request turned down by a development company

    Development companies turned you down.

    “Too small a project,” they say. Or you had something built, and it didn't work out

  • 16-bit pixel art of ongoing operations and maintenance, not build-and-forget

    You want more than “build it and walk away.”

    You want a partner you can keep relying on for operations and maintenance

Leave those worries to System Kakari (システム係).

A former Amazon engineer (11 years in total) personally handles everything from the first conversation to development and stable operations. The initial consultation is free.