The same providers serve Hiroshima as serve the rest of Hiroshima Prefecture, so the real question is not who is local. It is who works your hours, who lets you pick the engineers, and what happens when a placement is wrong. Staff augmentation providers look identical on a landing page and differ sharply in three places: how deep the vetting really goes, what happens when a placement is wrong, and how hard it is to leave.
Entry 01 is ours and is marked as such. Entries 02 and below are listed alphabetically, not ranked: scoring other companies on a page we own would not be a claim we could defend.
Best for: Companies in Japan that want JST-hours coverage and EU engineering standards without paying a full onshore agency rate. Startups backed by our clients have raised over $120M, and the group has delivered 350+ client projects.
In Hiroshima: engineers work Hiroshima business hours from our Japan and EU teams, with delivery capacity in Vietnam for the work that runs overnight. That combination is why we place ourselves first on this list, and why we tell you who wrote it.
Trade-off: We are a marketplace first: you interview and choose the engineers. If you want a vendor to absorb the whole problem with no involvement from you, a traditional agency is a closer fit.
Disclosure: JapanDev.jp is operated by Digital Unicorn, so this entry is our own. Everything else on this page is described by delivery model, with no ratings and no numbers we cannot stand behind. See what we have shipped.
Best for: Dedicated teams at lower cost with European management
Trade-off: Asia-Pacific hours require deliberate overlap planning
Best for: Filling specific engineering gaps quickly
Trade-off: Smaller bench than the large services firms
Best for: Mixed engagements combining build and staffing
Trade-off: Breadth over specialization in any single stack
Best for: Long-running dedicated teams with EU working hours
Trade-off: Model favors continuous engagements over short projects
Best for: Consumer products needing Japanese market fluency
Trade-off: Agency engagement model rather than engineer placement
Best for: Long-running product teams with EU working hours
Trade-off: Engagements are team-shaped rather than individual placements
Best for: Japan teams that need same-time-zone engineers
Trade-off: Supply concentrated in the Americas
Best for: Teams bridging Japanese business and offshore delivery
Trade-off: Delivery is team-shaped rather than individual
Best for: Cost-sensitive hiring with a wide role catalog
Trade-off: Time-zone overlap with Japan teams is limited without a shifted schedule
Best for: Startups scaling engineering after a raise
Trade-off: Positioned for funded companies, priced accordingly
Staff augmentation succeeds or fails on vetting depth, and vetting is the easiest thing for a provider to claim. Ask who runs the technical interview, how long it lasts, and whether you can see the scorecard. Providers that screen with automated tests alone tend to place people who pass tests, which is a different skill from shipping in an existing codebase.
Negotiate the exit before the start. A short paid trial, a replacement window in the first month, and a notice period you can live with cost nothing when things go well and save a quarter when they do not. Any provider confident in its bench will agree to all three without argument.
Red flags that should end the conversation
Expect 30 to 50 percent below agency rates for equivalent seniority. If a provider prices at agency level, you are paying for a delivery layer you already have.
By delivery model and buyer fit, not by ratings. JapanDev.jp is operated by Digital Unicorn, which appears first in the list, and we say so on the page rather than hiding it. Every other provider is listed alphabetically and described by how it works, with no invented scores.
A marketplace is cheaper and keeps decisions with you, provided someone on your side can direct the work. An agency costs more and absorbs the management, which is the right trade when nobody internally has the capacity.
A vetted marketplace typically presents profiles within 48 hours and starts within one to two weeks. Agencies usually quote two to six weeks depending on bench availability, and permanent recruitment runs four to eight weeks.
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Vetted engineers matched to your stack and your hours in 48 hours. $0 until you hire.
🇯🇵 東京、大阪をはじめ日本全国の企業から信頼されています