Stuck at "requirements definition"?
"We want to try the latest AI (MCP, etc.), but can't find a vendor who handles everything from infra to app…" "Requirements are fuzzy, we never reach a quote, and the project won't move…" "We labored over a spec, yet users saw the result and said 'this isn't what we wanted'…"
Worn out managing high-uncertainty projects? Escaping the thick-spec ritual, and using the strengths of a dedicated engineer who covers everything from infrastructure to app, here's a case of building and validating a prototype (PoC) in record time.
1. The real walls that trouble a PM (Before)
A client planned a system using "MCP (Model Context Protocol)," where AI links with external tools and acts autonomously. But the project manager hit these walls:
- The limit of multi-vendor management — It needs cloud infra, containers, API development, and AI knowledge. Assigning specialists for each and reconciling requirements — the "vendor control" load weighed heavily on the PM.
- "Requirements" never end — With cutting-edge tech, nobody knows the "right answer," and they really wanted to proceed flexibly while researching. But typical vendors insisted "we can't quote until the spec is fixed."
- The "this isn't what we wanted" rework risk — Having been burned before — months fixing a spec only to be told "not what we needed" — they feared repeating the failure.
2. Our proposal: full-stack × rapid PoC
We proposed a "rapid PoC" that frees the PM from document drudgery.
① Full-stack that removes "vendor control" — We cover everything from cloud infra build to app release. The "telephone game" and "coordination meetings" between domains drop to zero, slashing the PM's management load while we implement at overwhelming speed.
② Agree with a "prototype" instead of a spec — In just one week we built a prototype that actually works with AI. Letting stakeholders touch it directly drew out intuitive feedback, and we course-corrected agilely.
3. Smooth progress, and focus on the PM's real value (After)
The client's PM gave us happy screams: "It's amazing it takes shape even while exploring" and "You're so fast we can barely keep up."
- Consensus became dramatically smoother — Fixing the spec while touching the "real working thing" early removed perception gaps and eradicated rework risk.
- Focus on the PM's true job — value creation — Free from vendor coordination and meaningless documents, they could concentrate on "what is the core feature we truly need."
4. Cost and timeline
- Development (PoC): from approx. ¥300,000 (varies by requirements)
- Duration: 1 week (ultra-short)
The biggest cost driver isn't the engineer's hourly rate — it's slow decisions from the "telephone game (coordination)" and "over-engineering" from layered subcontracting. "The one who hears your problem" is "the one who sets up the infra and writes the code." With no one in between, even cutting-edge projects take shape while we research together.
Project not moving forward?
"We want to try the latest AI, but don't know where to start…" — PMs, please reach out. As your "tech department" covering infra to app, we'll turn your idea into a "working thing" at top speed.