J-Tech Japan, Inc. – SASAL, INC

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Future-Proofing Growing Businesses with Agile, Cloud-Native Global Software Solutions
Your Strategic Tech Partner for Global Growth
J-Tech Japan, Inc. is a specialized software development firm that acts as the extended engineering team for ambitious startups and SMEs. Operating across key technological hubs in New York, Tokyo, and Oslo (Norway), our reach strategically spans the Americas, Asia, and Europe. This tri-regional footprint creates a powerful synergy with SASAL’s global network across the US, UK, and Japan. Through this close partnership, we provide unparalleled agility, enabling our clients to rapidly deploy digital solutions and scale their businesses seamlessly in any market worldwide.
Enterprise-Grade Technology, Scaled for You
As a recognized member of the prestigious "Microsoft for Startups" program, we specialize in making top-tier Microsoft Azure and C# technologies accessible to SMEs. We understand that growing companies cannot afford to accumulate technical debt. By utilizing Domain-Driven Design (DDD) and modern serverless architectures, we build secure, highly efficient applications that fit your current budget while being ready to scale instantly as your business expands.
Build on a Rock-Solid Foundation with "Sekiban"
For growing businesses, scaling fast often leads to fragile systems and data inconsistencies. To solve this, we developed Sekiban, our proprietary open-source Event Sourcing and Command Query Responsibility Segregation (CQRS) framework. Built on Azure Cosmos DB, Sekiban records every data change as an indestructible sequence of events. For your business, this means:

Zero Data Loss: Complete traceability and auditability from day one, ensuring your data is always accurate and compliant.
Pain-Free Scaling: An architecture designed to handle sudden spikes in traffic without breaking.
Smart Insights: The ability to trace back any past state of your system, giving you deep insights to make better business decisions.

End-to-End Solutions for the Modern Workforce
We don't just build backends; we deliver complete digital experiences. From custom iOS and Android applications to comprehensive web platforms, we turn your ideas into reality. Furthermore, as a remote-first, globally distributed company ourselves, we deeply understand the needs of modern teams—which led us to create "Koos," our own virtual office SaaS designed to boost collaboration for borderless workforces.

Whether you need to build a new platform from scratch, rescue a struggling legacy system, or expand your digital presence internationally, J-Tech Japan provides the technical backbone to accelerate your journey.