I will diagnose and fix any linux, cpanel, nginx, dns and more
Gig Summary
SysAdmin Senior
Level 2
Has met high performance criteria and has a proven track record for meeting client expectations.
About this Gig
Is your server down, are your emails landing in spam, or is your website showing 502 Bad Gateway errors? Stop losing money and clients.
I am a Senior Sysadmin and DevOps Expert with over 8 years of experience managing high-performance, production-grade infrastructure. I don't just apply temporary patches; I deploy permanent, enterprise-level solutions to ensure your server is secure, lightning-fast, and 100% reliable.
Whether you are facing a critical server emergency or need a dedicated administrator to scale your architecture, I provide elite support for VPS, Dedicated, and Cloud environments.
️ WHAT I CAN DO FOR YOU:
- Emergency Troubleshooting: Instant fixes for 502/504 Bad Gateway errors, Nginx/Apache crashes, and SSL certificate failures.
- Email Deliverability Mastery: Stop your emails from going to spam. Complete configuration of SPF, DKIM, DMARC, and precise DNS routing.
- Control Panel Management: Deep technical expertise in cPanel/WHM, Plesk, Coolify, and CWP.
- Advanced Performance Tuning: Squeezing maximum hardware efficiency from your CPU/RAM by optimizing Nginx, LiteSpeed, PHP-FPM, and MySQL.
- Security & Hardening: Malware removal, strict Firewall (CSF/LFD) configuration
Server:
Apache HTTP
•
File server
•
Name server
•
DNS
•
Nginx
•
Web server
Operating system:
Linux
•
Unix
•
Other
My Portfolio
FAQ
How do you ensure that the server won't crash again?
I perform Root Cause Analysis (RCA). I don’t apply temporary fixes; instead, I optimize resources (RAM/CPU) and implement security hardening. With 8 years of experience, my goal is to ensure the total stability and continuity of your business—not just a quick fix.
Do you manage a complete infrastructure on Proxmox?
Yes. I perform bare-metal deployments, configure ZFS/LVM storage, set up virtual networks, and implement high availability (HA). I manage containers (LXC) and virtual machines (VM), ensuring a professional, scalable virtualization environment with backups.
My server is slow during periods of high traffic. Can you optimize it?
Yes. I configure the stack (Nginx, PHP-FPM, MySQL) and Linux kernel parameters. I have experience with high-performance servers (24+ cores) capable of handling thousands of concurrent requests by optimizing the use of physical resources to prevent overload.
Which Linux distributions and environments are you familiar with?
Expert in AlmaLinux 8/9, Debian, and Ubuntu. I manage cPanel/WHM, Plesk, CWP, Coolify, and CyberPanel. I also work in panel-less environments managed entirely via the terminal, as well as with Docker and n8n automations for efficient workflows.
Is it safe to give you root access to my server?
Professional ethics are the foundation of my career. I recommend granting temporary access and revoking it once the task is complete. My top priority is absolute confidentiality. As a Senior Sysadmin, I follow strict protocols to ensure the integrity of your data and that of your clients.
Do you offer monthly management services?
Yes. For clients seeking peace of mind, I offer proactive plans that include 24/7 monitoring, security updates, external backup management, and priority support. If you’re looking for a long-term technology partner, contact me for a customized plan.
101 reviews for this Gig
| (97) | ||
| (3) | ||
| (1) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
C chilangoeshop

Mexico
Ongoing collaborationExcelente , muchas gracias
$50-$100
Price
5 days
Duration
T Seller's Response
Helpful?M marketingweb08

Argentina
Ongoing collaborationTrabajo con Carlos hace bastante, cada vez que tengo un problema con los servidores lo soluciona en poco tiempo, tiene amplio conocimiento y se sigue perfeccionando, lo recomiendo 100%. Saludos. Nicolas.
$50
Price
3 days
Duration
Helpful?P 
panthercolorllc

Ecuador
Gran profesional técnico. Su experiencia en el diagnóstico y ayuda en nuestros servidores fue de gran ayuda. Trabajo limpio, y con total dominio del backend. recomendado. Esperamos seguir solicitando sus servicios técnicos,
$50
Price
9 days
Duration
Helpful?T 
timo_stephan

Germany
It was the first time for me working with Carlos. He has a lot of experience and gives daily updates on the project which I really like. I can recommend him if you look for someone who knows how to do DevOps work.
$600-$800
Price
8 days
Duration
Helpful?M marketingweb08

Argentina
Ongoing collaborationExcelente profesional, muy recomendable. Saludos. Nicolas.
$200-$400
Price
2 weeks
Duration
Helpful?
101 reviews for this Gig
| (97) | ||
| (3) | ||
| (1) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
C chilangoeshop

Mexico
Ongoing collaborationExcelente , muchas gracias
$50-$100
Price
5 days
Duration
T Seller's Response
Helpful?M marketingweb08

Argentina
Ongoing collaborationTrabajo con Carlos hace bastante, cada vez que tengo un problema con los servidores lo soluciona en poco tiempo, tiene amplio conocimiento y se sigue perfeccionando, lo recomiendo 100%. Saludos. Nicolas.
$50
Price
3 days
Duration
Helpful?P 
panthercolorllc

Ecuador
Gran profesional técnico. Su experiencia en el diagnóstico y ayuda en nuestros servidores fue de gran ayuda. Trabajo limpio, y con total dominio del backend. recomendado. Esperamos seguir solicitando sus servicios técnicos,
$50
Price
9 days
Duration
Helpful?T 
timo_stephan

Germany
It was the first time for me working with Carlos. He has a lot of experience and gives daily updates on the project which I really like. I can recommend him if you look for someone who knows how to do DevOps work.
$600-$800
Price
8 days
Duration
Helpful?M marketingweb08

Argentina
Ongoing collaborationExcelente profesional, muy recomendable. Saludos. Nicolas.
$200-$400
Price
2 weeks
Duration
Helpful?
