This site is a notebook of engineering problems that only show up once systems grow. It spans embedded firmware and hardware constraints, data ingestion, cloud backends, and the trade-offs that survive real production use.https://jobenas.com/https://jobenas.com/blog/concurrency-does-not-imply-complexity/https://jobenas.com/blog/concurrency-does-not-imply-complexity/Why RTOS abstractions hide memory costs on constrained systemsFri, 16 Jan 2026 00:00:00 GMThttps://jobenas.com/blog/how-generalizations-fail-under-growth/https://jobenas.com/blog/how-generalizations-fail-under-growth/Why variability in systems is not the problem, but their placement isTue, 17 Feb 2026 00:00:00 GMThttps://jobenas.com/blog/localized-ownership-and-why-debugging-breaks-down-at-scaled/https://jobenas.com/blog/localized-ownership-and-why-debugging-breaks-down-at-scaled/How diffuse responsibility makes debugging complex systems challengingThu, 29 Jan 2026 00:00:00 GMThttps://jobenas.com/blog/when-responsibility-boundaries-disappear-in-embedded-systems/https://jobenas.com/blog/when-responsibility-boundaries-disappear-in-embedded-systems/How unchecked growth can erode firmware architectureTue, 20 Jan 2026 00:00:00 GMThttps://jobenas.com/blog/when-duty-cycling-exposes-the-seam-between-powered-and-reliable/https://jobenas.com/blog/when-duty-cycling-exposes-the-seam-between-powered-and-reliable/Low power modes surface readiness assumptions that steady state systems quietly satisfy.Mon, 12 Jan 2026 00:00:00 GMThttps://jobenas.com/blog/cutover-is-where-systems-show-its-flaws/https://jobenas.com/blog/cutover-is-where-systems-show-its-flaws/Why system optimization works for the steady state but not for transient states.Tue, 23 Dec 2025 00:00:00 GMThttps://jobenas.com/blog/if-it-can-break-you-its-part-of-your-system/https://jobenas.com/blog/if-it-can-break-you-its-part-of-your-system/IoT systems break at the boundary between components, and why indirect responsibility is criticalFri, 26 Dec 2025 00:00:00 GMThttps://jobenas.com/blog/multi-network-considerations/https://jobenas.com/blog/multi-network-considerations/When multiple networks are required by an IoT solution explicit contracts are requiredFri, 02 Jan 2026 00:00:00 GMThttps://jobenas.com/blog/semantic-ingestion/https://jobenas.com/blog/semantic-ingestion/Generic platforms break when meaning is inferred from structure. Here’s what survives growth.Fri, 19 Dec 2025 00:00:00 GMThttps://jobenas.com/blog/when-networks-dont-own-device-state/https://jobenas.com/blog/when-networks-dont-own-device-state/Why control planes at the network level are not a design decision but a critical component.Fri, 09 Jan 2026 00:00:00 GMThttps://jobenas.com/blog/i-treat-my-ais-context-window-like-a-production-system/https://jobenas.com/blog/i-treat-my-ais-context-window-like-a-production-system/Long-running systems need maintenance loops. Logs rotate, caches expire, databases compact. Your AI agent's context window is no different, but almost nobody treats it that way.Wed, 25 Mar 2026 00:00:00 GMThttps://jobenas.com/blog/why-i-gave-my-ai-agent-memory-without-vectors/https://jobenas.com/blog/why-i-gave-my-ai-agent-memory-without-vectors/Long-lived AI agents degrade not from missing context, but from uncontrolled accumulation. This is how I built a memory and compression system that protects attention instead of maximizing retrieval.Wed, 04 Mar 2026 00:00:00 GMThttps://jobenas.com/blog/when-toolchain-seems-rot/https://jobenas.com/blog/when-toolchain-seems-rot/How small upstream changes quietly broke a once-viable STM32 workflow, and why generic toolchains decay without explicit bridges.Mon, 22 Dec 2025 00:00:00 GMThttps://jobenas.com/blog/i-built-a-voice-assistant-that-answers-my-phone/https://jobenas.com/blog/i-built-a-voice-assistant-that-answers-my-phone/How I built a personal voice assistant that registers as a SIP extension on my PBX, handles phone calls with speech recognition and natural TTS, and costs nothing to run.Wed, 15 Apr 2026 00:00:00 GMT