Nexa Engineering
Get on the ground, cut the excess, change the business.
Your dedicated engineer.
We don't stop at visualization. Starting from a working prototype before requirements, we design all the way to the "next move" on the ground. Bringing the benefits of IT to regional SMEs with overwhelming speed and price.
WHY
Why does DX fail?
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.
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.
WORKS
Selected work
Here are a few cases actually running on the ground.
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.
See Sales Systemization, End to EndSee the Hashira SFA caseTraditional 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.