Sola is a Japan-based software & AI development company. We help overseas companies enter the Japanese market and build systems tailored to Japan — handled end-to-end by our in-house team, from requirements definition to AI development and operations, with close, English-friendly communication.
No fixed requirements yet? That's fine — we support you from the planning stage.
A rough estimate is welcome too.
NDA available. No pushy sales.
Challenges we solve
For overseas companies, projects often stall not from a lack of technology, but from communication gaps, unclear context, and partners who can't own the whole thing. Sola's in-house team — covering requirements through development — addresses the root cause.
It's hard to find a Japan-based partner who can own the full build and communicate clearly in both English and Japanese.
→ One in-house team owns your build end-to-end, in English and Japanese.
Language and cultural gaps cause the delivered system to drift away from what you actually intended.
→ You talk directly with the engineers — no middle layers, no drift.
Compliance, public-sector procurement, and local operations that off-the-shelf tools and overseas teams can't easily handle.
→ We handle Japanese compliance, procurement and operations in-house.
Generic packages force your team into workflows that don't match Japanese business practice.
→ Tailor-made development that fits how your business actually runs in Japan.
Why Sola
Because our in-house team handles everything, you get a fast start, intent and context preserved through design and build, and direct communication throughout. The three things that matter most in custom development, delivered together.
We assign the most suitable in-house engineers immediately. Fast to start, and flexible at recovering or reinforcing projects in progress.
One in-house team owns requirements through design and build, keeping the intent and context intact. Operations and maintenance can continue on request.
No intermediary vendors — we work directly with your team, in English and Japanese, and are comfortable embedding as part of it.
Capabilities
From application development to infrastructure, AI, and operations — all end-to-end. We deliver tailor-made development matched to your needs.
Web, mobile, VR/AR and games — business systems built from scratch to your requirements.
Cloud design and build on AWS / Azure / GCP, on-premise servers, networking, and platform migration.
Requirements support, PM/PMO, AI-driven development and adoption, and modernization.
Operations and maintenance for infrastructure and applications, system migration, security operations and CSIRT.
AI-driven development
We implement tailor-made AI for your use case — image recognition, demand forecasting, internal knowledge search and more. Our R&D team validates emerging and niche technologies through prototypes, with real-world deployment in mind. With Local AI that runs on closed or on-premise networks, we also support AI adoption for security-sensitive government and enterprise environments.
Why we're trusted
Government bodies and major enterprises in Japan have trusted us with complex, large-scale development and operations. Here are the facts, straight.
Most of our work comes from clients who come back — ten relationships have lasted 10+ years, the longest 15 years and counting.
We bid directly on public-sector tenders and handle everything in-house. We can also help overseas companies propose to Japanese government even without a local entity.
Apps, infrastructure, AI and security — covered by our in-house engineers and R&D team, reducing multi-vendor coordination.
We work online with clients across Japan, and visit on-site when needed (travel charged separately). Local presence is not required to start.
Common situations
You're entering the Japanese market — or proposing to the public sector — but have no engineering presence in Japan.
Gaps in understanding, weak project management, and a lack of recovery options stalled progress.
You want to validate advanced or niche technology, but it's hard to staff the right engineers in-house.
Highly specific operations don't fit generic packages, forcing awkward workarounds on your team.
How we work
How to engage
We propose the best approach for your scope and scale. For clear-cut needs, our own services get you live quickly; for complex or large-scale builds, hand it over from the requirements stage. By entrusting the responsibility for your systems, security and data protection to a dedicated team, you can focus on your core business — with better quality and speed than doing it in-house. Not sure which fits? That's a welcome conversation too.
If the use case is clear, our own services get you live fast and affordably.
※ Sola is an official Nextcloud partner.
Security and data-protection responsibility, handed to specialists. End-to-end, from requirements to operation.
※ Cost depends on the features, scope and schedule. We staff a small, flexible team to your requirements. A system tailored to your business can take from a few months to over a year from requirements to launch. Selecting your expected budget (or "undecided") in the form makes our proposal smoother. "Just want a ballpark" is welcome too.
Budget guide
Costs vary with requirements, scale and integrations — but these ranges help you set expectations before a consultation. Custom development typically starts from around ¥1M.
| What you're building | Typical range | Main cost drivers |
|---|---|---|
| Small web app / business tool | ¥1M–3M | Screens, users, external integrations |
| Tailor-made business system | ¥3M–10M | Scope, permissions & reporting complexity, legacy integration |
| Core / large-scale system | ¥10M+ | Business coverage, availability & security, migration difficulty |
| Mobile app | ¥3M–10M+ | iOS/Android, server-side features, design scope |
| AI prototype / validation | ¥0.5M–5M | Validation scope, data readiness, path to production |
| Infrastructure / cloud migration | Varies | Architecture, migration volume, allowable downtime |
Ranges are general guidance only; we give you a concrete ballpark after a free consultation.
FAQ
Custom development, infrastructure renewal, AI adoption, technical validation, and Japan market entry — we'll tailor a proposal to your needs. Start with a free consultation, or just a rough estimate.
