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DenisCS
@denis_cloud
IT Systems Specialist, Email Deliverability and DNS Authentication
Spanien
Englisch, Spanisch, Katalanisch
Über mich
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.
Kompetenzen
DenisCS
offline •
Meine Dienstleistungen
E-Mail-Management
I will fix email deliverability, spf, dkim, dmarc, and dns records
Arbeitserfahrung
Systems Administrator - Microsoft 365
Enterprise Technology • Vollzeit
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.
Full Stack Developer
Council • Vollzeit
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.
