About Joya Systems

Mature approach for new challenges.

Joya Systems illuminates the black art of Linux and Windows driver development.

For over 20 years, engineers comprising the core of Joya Systems have tackled some of the toughest problems in the windows driver development industry. Our organization has the unique expertise to deliver what is often thought to be technically impossible or close to it all while making things simple for administrators and end-users to manage and interact with.

Check out some of our past driver development projects.

The Firm

Joya Systems is a boutique kernel engineering consultancy. We were founded on the premise that Windows kernel development and related systems-level domains — Linux kernel development, macOS system extensions, firmware — represent a category of engineering where depth matters more than breadth. A general-purpose software firm can write application code; very few can correctly design a Windows file system minifilter, debug a race condition in a production StorPort miniport, or port a security agent from Windows to Linux without introducing new failure modes. We stay focused on this narrow vertical specifically because that focus is what makes the difference between a driver that ships and a driver that causes Blue Screens in the field.

Over the course of more than 200 completed driver projects, we have worked across every major Windows driver framework: WDM, KMDF, UMDF, NDIS, WFP, the minifilter model, and StorPort. Our engineers have shipped production drivers for storage vendors, security companies, gaming platforms, medical device manufacturers, and industrial hardware vendors. The "200+ projects" figure is not a marketing number — it represents a body of experience that covers the failure modes, edge cases, and compatibility problems that are nearly impossible to anticipate without having seen them in the field.

What distinguishes Joya Systems from most Windows consulting firms is cross-platform kernel capability. Most firms specialize in one operating system. Our team has genuine production depth in Windows, Linux, and macOS kernel development — the same engineers who write Windows minifilter drivers also write Linux eBPF programs and macOS Endpoint Security extensions. This matters to companies building security products, storage systems, and infrastructure software that must run on multiple platforms, because a single firm can own the kernel layer across all three without a handoff between specialists who do not share a common technical vocabulary.

Our team is made up of engineers who write production kernel code, not consultants who manage engineers who write production kernel code. Jose Flores founded the firm after years of working at the deepest levels of the Windows kernel ecosystem, including contributing to the development of one of the industry's most respected kernel-mode debuggers. See our management bios for individual profiles, and our past projects for a representative sample of completed work.