esedark
technical dark workspace with laptop and coding screens

blog / notes / systems / operations

Posts, field notes and technical ideas with commercial intent.

This is where I publish about DevOps, CTO work, SaaS, automation, bots, infra, AI, OpenClaw, MCP and real systems.

DevOps
systems, infra, delivery

architecture, execution and operational thinking.

SaaS
product and business

building products that can validate, sell and scale.

AI
agents and tooling

practical AI, automations and technical leverage.

latest posts

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Startup team reviewing technical strategy and product roadmap

CTO & Product

CTO as a Service in Spain: complete guide for startups

What CTO as a Service means, when a startup needs it, how much it costs and how to hire technical leadership without creating dependency.

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Network infrastructure dashboard used to review stable mobile proxy sessions

Instagram & Proxies

4G mobile proxy for Instagram: a stable setup to reduce footprints

A defensible Instagram network setup reduces accidental cross-account signals through isolation, consistency, bounded workflows and useful evidence.

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Applied AI

AI for customer service: architecture, costs and risks

Customer service AI needs controlled knowledge, tool permissions, measurable quality and reliable escalation—not just a model connected to a chat box.

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Instagram & Proxies

Mobile proxies for Instagram: common mistakes that block accounts

A mobile proxy changes network routing, but it cannot repair inconsistent identity, excessive activity, poor session handling or non-compliant automation.

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CTO & Product

How to prioritize features when everything seems urgent

Prioritize features with a visible scoring model, small validation steps and explicit capacity for reliability work.

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Mobile Automation

How to connect ADB to multiple Android devices

Treat every Android device as an addressed, monitored resource; never rely on whichever phone ADB finds first.

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Mobile Automation

Mobile automation: when to use real phones and when to use emulators

Use emulators for fast, repeatable coverage and real phones for hardware, network and production fidelity; most serious systems need both.

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Instagram & Proxies

4G proxies for Instagram: what to check before paying a provider

Evaluate a 4G proxy provider by its network, session controls, measurable capacity, traceability and acceptable-use terms—not by vague promises.

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Scraping & Leads

Playwright vs Puppeteer for modern web scraping

Playwright offers broader browser automation; Puppeteer remains a focused choice for Chrome-centric scraping. Architecture matters more than the library.

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CTO & Product

How to estimate software development without fooling yourself

Reliable software estimates expose scope, assumptions and uncertainty instead of presenting an invented deadline as certainty.

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Applied AI

RAG for business explained: what it is and when to use it

RAG connects a language model to controlled business documents so answers can use current evidence, permissions and citations.

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Mobile Automation

How to build an Android phone farm for automation

A reliable Android phone farm treats every device as a measurable worker with controlled access, queued jobs and explicit recovery procedures.

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