Nejat Hakan | Systems & Infrastructure Engineering
Welcome to the Knowledge Base
This platform is a hands-on, production-grade engineering reference dedicated to deterministic Linux systems, sovereign infrastructure, high-concurrency data architectures, and hardware-level computing.
Every modern backend application, distributed system, and data pipeline relies on an uncompromising substrate. The guides documented here focus on building, automating, and hardening that exact foundation across the full enterprise Linux spectrum (Debian, Ubuntu LTS, Arch Linux, Fedora, and openSUSE) using open-source technologies, rootless containerization (Podman & Systemd Quadlets), and modern API architectures: practical, reproducible, and stripped of ephemeral abstractions.
Core Engineering Domains
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About & Engineering Philosophy
Engineering profile, architectural principles, zero cloud lock-in philosophy, and professional background in sovereign systems engineering.
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Systems & Infrastructure
Deterministic Linux kernel architecture & host hardening, rootless Podman & Systemd Quadlets, enterprise setup guides (Debian, Ubuntu, Arch, Fedora, openSUSE),
nftables/WireGuard networking, and sovereign self-hosting. -
Software & Data Engineering
Polyglot systems programming (C, Rust, Go, Python, Java), modern Python web frameworks & APIs (FastAPI, Django, DRF, Flask), high-availability PostgreSQL 17 databases, and production data science & MLOps pipelines.
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Hardware & Sovereign Labs
Bare-metal Raspberry Pi 5 embedded engineering, PCIe NVMe boot, physical bus protocols (GPIO/I2C/SPI), read-only edge appliances & K3s clusters, and Tor-isolated Bitcoin Citadel node infrastructure.