Backend & Systems Engineer with an architecture-first mindset.

I design and build software across the stack, from low-level implementation details to distributed system boundaries.

Interested in concurrency, distributed systems, networking, infrastructure, and performance engineering.

Currently exploring Vulkan and eBPF, with a focus on systems-level behavior and observability.

↓ Contact

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Profile & Analytics

Engineering Focus Backend Systems: Java, Spring Boot, API design, concurrency, persistence, and service boundaries. Distributed Systems: service communication, routing, consistency, fault isolation, and scalability trade-offs. Systems Programming: C, C++, Rust, memory management, low-level tooling, and system behavior. Infrastructure: Linux, containers, Kubernetes, CI/CD, object storage, and edge infrastructure. Performance: concurrency models, CPU/memory behavior, I/O, profiling, and bottleneck analysis.

GitHub Activity

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Selected Engineering Work

	SPM — Site Package Manager A package management ecosystem built around a custom C++ parser, edge infrastructure, and distributed package storage. Architecture Compiler: C++17 lexer/parser producing structured package manifests. Edge Gateway: Cloudflare Worker handling request validation and package publishing. Write Path: spm-cli → GitOps → Worker → R2 Read Path: Extension → Local Cache → Edge Cache → R2
	GateBridge A lightweight Java gateway focused on service routing, concurrency, and cluster communication. Architecture Concurrency: virtual-thread based request handling on modern JDKs. Routing: dynamic traffic forwarding between connected nodes. Control Plane: interactive terminal interface for routing and event inspection. Network Flow: Clients → GateBridge → Nodes

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Architecture Interests

┌──────────────────────────────────────┐
│             Application              │
│                                      │
│  API Design · Concurrency · Domain   │
└──────────────────┬───────────────────┘
                   │
                   ▼
┌──────────────────────────────────────┐
│         Distributed Systems          │
│                                      │
│ Communication · Routing · Consistency│
│           Failure Boundaries         │
└──────────────────┬───────────────────┘
                   │
                   ▼
┌──────────────────────────────────────┐
│            Infrastructure            │
│                                      │
│ Linux · Containers · Networking      │
│             Storage · I/O            │
└──────────────────┬───────────────────┘
                   │
                   ▼
┌──────────────────────────────────────┐
│               System                 │
│                                      │
│ Memory · CPU · Kernel · Hardware     │
└──────────────────────────────────────┘

I am particularly interested in how decisions at one layer propagate into the others.

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Technologies & Tools

Category	Technologies
Languages
Backend & Frameworks
Data & Messaging
Infrastructure
Currently Exploring

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Contact & Connect

Watashi00 Backend & Systems Engineer Always exploring new technologies and paradigms, with a constant focus on how systems are designed, implemented, measured, and scaled.