Hire the Best System Administrators
in Spain

More than 3,000 reviews on G2
Rating is 4.5 out of 5.
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Salim S.

Alcala de Henares, Spain

$30/hr
5.0
33 jobs

With a Bachelor’s Degree and Diploma in computer science, numerous years of hands-on experience creating and implementing software applications, and the ability to troubleshoot and solve problems in a timely and accurate manner. My technical expertise includes cross-platform proficiency (Windows, Unix and Linux ); fluency in 13 scripting/programming languages (including C, C++,C#, Python, Visual Basic, Java, Perl and SQL); advanced knowledge of developer applications, tools, methodologies and best practices (including OOD, client/server architecture and self-test automation); Managing and Configuring Embedded Systems (Busybox) as well as IOT Devices such as Arduino, Raspberry PI, CubieBoard, Beaglebone, Intel Galileo and Intel Edison; Configuration management using Ansible. system virtualization using QEMU, Virtual Box, VMWare, XEN and Microsoft Hyper-V. I truly believe in continued education and research, and continue to seek new software and methods to assist with product development. I hope to bring my knowledge, and future knowledge to any organization i work in.

  • Amazon Web Services
  • Bash Programming
  • CentOS
  • Linux
  • Linux System Administration
  • Ubuntu
  • Splunk
  • DevOps
  • Ansible
  • Java
  • Python
  • Red Hat Enterprise Linux
  • Microsoft Power BI
  • Kubernetes
  • Deployment Automation
Joan C.

Calafell, Spain

$65/hr
5.0
149 jobs

Has your Linux server crashed? Or with CPU spikes? Or under DDoS attacks? I've been solving system crises 24/7 for over 25 years. Linux server/VPS management, performance, monitoring, and hardening; DDoS mitigation with ModSecurity and CSF firewall protection; email deliverability. #4 contributor worldwide on Spamhaus Threat Intelligence (100K+ threat monthly reports) and AbuseIPDB (1000K+ reports since 2025) - I identify cyber threats before they hit your servers, and I maintain real-time threat intelligence for global networks. #1 developer ranking on Stack Overflow Spanish (16K+ reputation) in 2022 with solutions trusted by thousands of developers. Skills: Linux Sysadmin, WHM/CPanel, HestiaCP, VestaCP, LAMP, LEMP, Varnish, Cloudflare, WordPress protection, hosting, PHP, MySQL, malware, webmaster, Apache, Exim, ModSecurity, CSF Firewall, networking, and security. Problems Solver and so on... My clients networks: OVH, Digital Ocean, Bluehost, Interserver, AWS, Linode, Google Cloud, GoDaddy, Hetzner, Hostinger, Contabo, Azure Microsoft, NetCup, NameCheap, AsmallOrange, BudgetVM, Comvive, DotBlock, FastHost, HostRocket, Liquidweb, and a long so on. Long experience. Since 1993 I've been working with computers for companies like IBM (12 years).

  • System Administration
  • Bash Programming
  • DNS
  • Linux System Administration
  • Network Security
  • System Security
  • LAMP Stack
  • LAMP Administration
  • LEMP Stack
  • Web Hosting
  • Cloudflare
  • WordPress Security
  • Website Security
  • Email Deliverability
  • PHP
  • cPanel
  • Email Security
  • Twitter/X Bootstrap
  • Internet Security
  • Web Service
Gustavo F.

Barcelona, Spain

$40/hr
5.0
6 jobs

IT System Administrator Expert in MDM, Cloud Solutions & IT Automation What I Bring: Proven success in managing large IT projects, including Jamf and Intune deployments. Expertise in Okta automation, improving user provisioning and role management. Skilled in creating and optimizing Jira Service Projects for better issue tracking and workflows. ️ Focused on proactive problem-solving to boost system efficiency and user satisfaction. What Drives Me: Always eager to tackle new challenges in dynamic IT environments, delivering solutions that make a difference.

  • System Administration
  • Google Workspace
  • JAMF
  • Microsoft Intune
  • Jira
Vadym A.

Valencia, Spain

$69/hr
5.0
223 jobs

I’m a Senior DevOps and Site Reliability Engineer with over 14 years of experience designing, automating, and maintaining scalable, scalable, secure, and highly available cloud infrastructures across AWS, Azure, and GCP, as well as hybrid on-prem environments. I help companies in e-commerce, fintech, and marketing technology migrate to the cloud, build robust CI/CD pipelines, and implement SRE-driven monitoring and automation. My focus is delivering measurable impact - improving reliability, accelerating delivery, and driving efficiency through automation, infrastructure-as-code, and cost optimization. Core Expertise • Cloud Platforms - AWS, Azure, GCP • Infrastructure as Code - Terraform, Ansible, Helm, CloudFormation • Containers & Orchestration - Docker, Kubernetes (EKS / AKS / GKE), Kustomize • CI/CD Automation - Jenkins, GitLab CI, GitHub Actions, Bitbucket Pipelines, ArgoCD • Monitoring & Observability - Prometheus, Grafana, ELK Stack, DataDog, New Relic • Security & Compliance - IAM, encryption, cost and access governance across multi-cloud and hybrid systems Certified AWS Solutions Architect and Certified Kubernetes Administrator. Let’s connect to discuss how I can help you build reliable infrastructure, speed up delivery, and reduce operational costs.

  • Amazon Web Services
  • Cloud Computing
  • Google Cloud Platform
  • System Monitoring
  • Microsoft Azure
  • Deployment Automation
  • DevOps
  • Kubernetes
  • Containerization
  • CI/CD
  • DevOps Engineering
  • Infrastructure as Code
  • Terraform
  • Jenkins
  • Ansible
Israel D.

Madrid, Spain

$60/hr
4.9
143 jobs

🔻 Upwork TOP RATED PLUS 🔻 ⭐⭐⭐⭐⭐“I have worked with Israel for a while now. As always, he is informative, follows my directions well and goes the extra mile to make sure his work is done to a high standard.” ⭐⭐⭐⭐⭐“I highly recommend Israel for any AWS tasks you might have. Anytime again. I am more than happy to work on further AWS tasks with Israel.” ⭐⭐⭐⭐⭐“Israel's ability to follow direction from a project manager was exemplary. His skills at server admin tasks and the technology required to complete the project was very good. Will be using him again in the future for similar projects.” I'm one of the highest-rated AWS SysOps freelancers on Upwork with numerous 5-star reviews, including overly positive feedback, and 100% of job success. I have helped many companies optimize their applications, make the leap and migrate to the cloud, increase the security of their infrastructure, and optimize the cost of deployed resources. I am a passionate and self-motivated system administrator with over 18 years of experience in Linux & Windows system administration. For the past 6 years, I have specialized in AWS and have worked on a variety of application migration and infrastructure design projects to the cloud. I am always ready to apply my experience and know-how. I hold the following official AWS certifications ✅ AWS Certified Solutions Architect ✅ AWS Certified SysOps Administrator ✅ AWS Certified Developer These are some of the projects I have successfully managed on AWS: ☁︎ High availability websites deployment: using EC2, Autoscaling, Elastic Beanstalk, EFS, RDS, CloudFront, ElastiCache, CodeCommit, CodePipeline, ALB/ELB, WAF ☁︎ Designed and built scalable, high-availability infrastructure for WordPress sites with millions of visits per month ☁︎ Applications migration to AWS ☁︎ Database migration to AWS: using RDS and Aurora ☁︎ Deploying Docker Containers on AWS with ECS, Fargate, and Elastic Beanstalk ☁︎ Connect On-Premises Data Center to AWS: using VPN tunnels, Ubiquiti routers, OpenVPN, and pfSense appliances ☁︎ Code management: using CodeCommit and CodePipeline for staging and production environments ☁︎ Cost optimization: analyzing in detail all infrastructure components and optimizing it to lower monthly cost ☁︎ VDI deployment: using Amazon Workspaces ☁︎ Mail server migration to Amazon Workmail ☁︎ Backup strategy for EC2 instances and EBS volumes to S3, Glacier or external storage ☁︎ Active Directory services: using AWS Directory Services, joining on-premises machines and EC2 instances to Active Directory I have experience with the following VPS providers, among others: Scaleway, Hetzner, Digital Ocean, Vultr, Dreamhost, Godaddy, Linode, 1&1, OVH... I am honest and reliable, always willing to go the extra mile and open to new knowledge. Feel free to contact me if you need anything not listed in my profile.

  • Amazon EC2
  • Amazon Web Services
  • Linux System Administration
  • Microsoft Exchange Server
  • OpenVPN
  • NGINX
  • Virtual Private Server
  • WordPress Migration
  • Mail Server Implementation
  • Proxmox VE
  • AWS Server Migration
  • High Availability and Disaster Recovery
  • Cloud Migration
  • AWS CodeDeploy
  • Amazon RDS
  • AWS CloudFront
  • Amazon Elastic Beanstalk
Daniel D.

Punta Umbria, Spain

$78/hr
5.0
23 jobs

I'm an IT professional with over a decade of experience in various industries of different sizes, from automotive to fintech, from startups to big enterprises. Specialised in AWS & Azure Cloud and a Microsoft Certified Azure Solutions Architect Expert. I utilise IaC (Terraform Cloud & Enterprise) and automate things using PowerShell/Python scripts. Leveraging APIs to interconnect applications. I have extensive experience in Microsoft Azure and Amazon Web Services, Identity and Access (IAM) management, Windows Server Administration, Hyper-V, AD, Azure AD, Office 365, Network administration, DNS, firewalls as well as Web Application Firewalls (WAF) such as Barracuda WAF. I'm proficient in Azure, AWS, Cloudflare, Jira, Confluence, Bitbucket, GitHub, Python, PowerShell, Okta, SailPoint IdentityNow, and Adaxes. Available for either short tasks or long-term projects.

  • System Administration
  • Amazon EC2
  • Amazon Web Services
  • Microsoft Active Directory
  • Windows Server
  • Microsoft Azure
  • Terraform
  • Python
  • AWS Systems Manager
  • Ansible
  • DevOps
  • AWS Lambda

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