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.

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Operations dashboard with queues and account metrics

Casos & Marca Personal

How I built systems with 20, 50 or 100 automated accounts

What changes between 20, 50 and 100 accounts, and what keeps the system stable.

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Developer terminal session for secure SSH access

Infra & DevOps

How to give clients SSH access without exposing your server

Safer SSH patterns for client access, traceability and stable operations.

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CTO & Product

Fractional CTO: when to hire one and what they should deliver

Know when part-time technical leadership is enough, what a fractional CTO should own and which outcomes justify the investment.

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Scraping & Leads

How to extract public emails and phone numbers from listings without losing quality

How to extract public contact data from listings without turning your lead pipeline into a noisy cleanup job.

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Scraping & Leads

Ethical scraping: what data to extract and what limits to respect

Ethical scraping collects the minimum justified data through a stable, rate-limited and traceable process.

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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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Infra & DevOps

Docker in production: when it helps and when it complicates

Use Docker when repeatable artifacts and dependency isolation solve real deployment problems, with ownership for security and operations.

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Applied AI

DGX Spark AI: how agents can save the repetitive work of 3 or 4 people

How DGX Spark changes the cost of running internal AI agents and which company workflows to automate first.

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Cases & Personal Brand

From developer to CTO: mistakes I made and lessons learned

Becoming a CTO means shifting from producing code to producing decisions, systems, ownership and business outcomes.

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Scraping & Leads

How to detect duplicates, spam, and junk leads in scraping

How to clean scraped leads before they pollute your CRM, dashboards, and outbound workflows.

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Mobile Automation

How to design work queues for mobile bots

How to build mobile bot queues that assign devices safely, recover predictably and leave a useful audit trail.

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Laravel & Backend

How to design clean Laravel APIs for mobile apps

How to build Laravel APIs that mobile teams can trust under version changes, background jobs and real production traffic.

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