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I will be your senior linux sysadmin for expert server repair and management
SysAdmin Senior
Senior Sysadmin & DevOps Engineer with over 8 years of experience in critical infrastructure.
Specialist in designing and optimizing high-performance environments (24+ cores/92GB RAM) and advance...
Level 2
Has met high performance criteria and has a proven track record for meeting client expectations.
About this Gig
Stop losing money and clients due to server downtime. Hire a Senior Professional.
With over 8 years of experience as a Senior Sysadmin and DevOps expert, I specialize in high-performance infrastructure, security, and business continuity. I don't just "fix" errors; I ensure your server is secure, lightning-fast, and reliable.
Whether you have a critical emergency or need a dedicated administrator to oversee your infrastructure, I provide enterprise-level solutions for VPS, Dedicated, and Cloud servers.
What can I do for you?
- Emergency Fixes: Resolve 502/504 Bad Gateway, SSL issues, DNS, and Mail delivery (SPF/DKIM/DMARC).
- Control Panels: Expert management of cPanel/WHM, Plesk, Coolify, and CWP.
- Performance: Advanced optimization of Nginx, Apache, Litespeed, PHP, and MySQL.
- Security & Hardening: Malware removal, Firewall (CSF/LFD) setup, and Imunify360 configuration.
- Modern Stack: Docker, n8n automation, Cloudflare WAF, and Python (uv) environments.
Why choose my service?
- Senior Expertise: 8+ years managing production environments for high-traffic e-commerce.
- Hardware Efficiency: I know how to squeeze maximum performance out of your CPU and RAM.
- Business First: I prioritize uptime
Server:
Apache HTTP
•
File server
•
Name server
•
DNS
•
Nginx
•
Web server
Operating system:
Linux
•
Unix
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.
Reviews
96 reviews for this Gig
| (93) | ||
| (2) | ||
| (1) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
B baresisllc
Repeat Client
United States
The best expertise in server issues and domain email migration. I can't say enough good things about Carlos. I will never use anyone else again for my technical issues and needs.
Up to $50
Price
1 day
Duration
Helpful?C chilangoeshop
Repeat Client
Mexico
Excelente …. Me complace recomendar al ing. Carlos ,
Up to $50
Price
1 day
Duration
Helpful?B braguscamp
Repeat Client
Spain
Nos hace muchos trabajos, y siempre está atento a cualquier problema que pasa en nuestra web.
Up to $50
Price
1 day
Duration
Helpful?F frann4
Repeat Client
Peru
Siempre es un placer trabajar con el
Up to $50
Price
4 days
Duration
Helpful?F frann4
Repeat Client
Peru
Muchas gracias Carlos, me ayuda a solucionar el problema con mi servidor, lo recomiendo al 100%
$50-$100
Price
10 days
Duration
Helpful?
Reviews
96 reviews for this Gig
| (93) | ||
| (2) | ||
| (1) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
B baresisllc
Repeat Client
United States
The best expertise in server issues and domain email migration. I can't say enough good things about Carlos. I will never use anyone else again for my technical issues and needs.
Up to $50
Price
1 day
Duration
Helpful?C chilangoeshop
Repeat Client
Mexico
Excelente …. Me complace recomendar al ing. Carlos ,
Up to $50
Price
1 day
Duration
Helpful?B braguscamp
Repeat Client
Spain
Nos hace muchos trabajos, y siempre está atento a cualquier problema que pasa en nuestra web.
Up to $50
Price
1 day
Duration
Helpful?F frann4
Repeat Client
Peru
Siempre es un placer trabajar con el
Up to $50
Price
4 days
Duration
Helpful?F frann4
Repeat Client
Peru
Muchas gracias Carlos, me ayuda a solucionar el problema con mi servidor, lo recomiendo al 100%
$50-$100
Price
10 days
Duration
Helpful?
