Nexa Engineering
Get on the ground, cut the excess, change the business.
Starting with sales. Your dedicated engineer.
The latest technology is available to anyone now. The only question left is what you use it for. We focus on systemizing sales — from where every deal stands to what to do next — and carry the design, the build and the running of it end to end.
WHY
Why does DX fail?
"Our IT is behind the times" — that isn't the reason. The sheets, the tools: what you already have running is enough.
What's missing is somewhere to settle what all of it is for.
Does any of this sound familiar?
The wall of requirements
"Come back with your requirements," they said. You decided them desperately — without ever being able to name the real problem.
Don't know where to start59%（IPA DX Trends 2025）
A system no one uses
You paid a lot to roll it out, yet the people on the ground say "Excel is faster." Nobody touches it.
Not adopted on the ground41%（Gron 2026）
Visualization, and nothing more
The numbers show up. But to "so what do we do next?" — it gives no answer.
DX produced no results / failed64%（Gron 2026）
The cause of failure is neither technology nor budget.
WHAT
What's the real problem?
Most failures come from deciding "what to build" before defining "what the problem is."
Only "what to build" gets fixed while the problem stays vague, and after completion comes "this isn't what we wanted" — the order is reversed. We build a working prototype first, and while touching it on the ground we discern "what the real problem is" before deciding what to build out.
Reverse the order.
- Requirements
- Development
- ("not what we wanted")
- Prototype
- Test on the ground
- Design & build
A working thing first — before requirements.
And you keep the tools you already use.
Most "systems nobody uses" begin the moment the tools people knew were taken away. Instead of replacing them, we leave your sheets and tools where they are and connect them from behind.
HOW
How we deliver
Embed and dig out the problem
Work operations together on the ground, reconcile the gap between management and the ground, narrow to the one or two that matter. (~1–2 weeks)
Ship a working prototype
Minimal docs, full use of the latest tech to build fast. We hand it over on the ground in a week and check direction by touching it together. (~1 week)
Release small, improve while in use
Don't wait for perfect. Release with the minimum necessary features, then keep improving based on feedback as people on the ground use it.
NOW
AI erased the gap.
Technology used to carry a value called lead time. Whoever learned it first, whoever adopted it fastest, won.
That lead time is gone.
The latest marketing theory, the financial models, the architecture — a one-person company in Kumamoto and a large corporation in Tokyo now get them on the same day, at nearly the same quality.
Technology no longer sets anyone apart. What still does is whether you can decide what to use it for.
Where the difference lives has moved.
- A lead time in technology
- First to adopt wins
- Everyone holds the technology at once
- What you use it for is what sets you apart
We spend the first one to two weeks on the ground because that is the only place a difference is left to find.
So we narrowed down to systemizing sales.
It is tied directly to revenue, so the effect can be checked in numbers. It eats more of an owner's time than anything else. And the customers you let slip are invisible while it is happening. As an order of operations, we think this is where to start.
WORKS
One offering on the banner.
What sits on this page is the work we are furthest inside. Everything else we help with is in the service list.
COLLABORATION — with Hashira Consulting
Sales systems: from run by people, to driven by AI.
A marketing strategist (400+ companies supported) and an AI-driven engineer systemize your sales, customer management and marketing end to end — design, implementation, operation. AI runs the system; you focus on judgment and your customers.
- Hashira Consulting / Okage-juku
- What it's for (the axis)
- Nexa Engineering
- How it gets done (the technology)
Technology alone doesn't set a direction. An axis alone doesn't move. We hold both in the same hands — plenty of firms have one of them; almost none have both.
Traditional SFA
AI is just one feature bolted onto the app. People operate the SFA and AI only handles a slice — its real capability goes unused.
AI takes the lead. You just talk to it, and it masters the entire SFA.
First, let us see where the work happens.
We won't bring a proposal deck. It's fine to come saying "we failed once" or "we don't know what the problem is." Based in Kumamoto, we help small and midsize companies from finding the problem to software development and improvement — together.