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denis_cloud

DenisCS

@denis_cloud

IT Systems Specialist, Email Deliverability and DNS Authentication

Spain
English, Spanish, Catalan
About me
Hi, I'm Denis, an IT and Systems Administrator specializing in email infrastructure, DNS configuration, and cloud platforms. I help businesses and entrepreneurs secure their email ecosystems, solve spam/bouncing issues, and implement proper authentication protocols (SPF, DKIM, DMARC) across Microsoft 365, Google Workspace, and major DNS providers like Cloudflare, GoDaddy, and Namecheap. Focused on fast turnarounds, reliable communication, and secure setups.... Read more

Skills

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denis_cloud
DenisCS
Offline • 

See my services

Email Management
I will fix email deliverability, spf, dkim, dmarc, and dns records
From$15 / projectMore details

Work experience

Enterprise_Technology

Systems Administrator - Microsoft 365

Enterprise Technology • Full-time

Aug 2025 - Present • 1 yr 2 mos

Autonomous administration of Microsoft 365, Entra ID, and Active Directory environments for 250+ users. Responsible for workstation lifecycle management, corporate network diagnostics (LAN/Wi-Fi/VPN), DNS configurations, and root cause analysis via system logs and SQL queries.

Council

Full Stack Developer

Council • Full-time

Oct 2022 - Jan 2023 • 3 mos

Developed a custom web application for municipal election management using HTML, CSS, JavaScript, PHP, and MySQL. Implemented core features for data handling, reporting, and secure database interactions, ensuring high performance and data integrity.