Hire the Best System Administrators

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4.8/5
Based on 4,237 client reviews
Izhar H.

Karachi, Pakistan

$40/hr
5.0
22 jobs

Experienced System Administrator with comprehensive expertise in managing, maintaining, and optimizing complex IT infrastructures. Specialized in enterprise-level server administration, cloud computing, and implementing robust security solutions. Committed to delivering reliable, scalable, and cost-effective IT solutions that align with business objectives. --- CORE COMPETENCIES -- System Administration: - Windows Server Administration (2012/2016/2019/2022) - Linux Server Management (RHEL, CentOS, Ubuntu, Debian) - Active Directory, DNS, DHCP, Group Policy Management - User Account Management and Access Control - System Performance Tuning and Optimization -- Cloud Infrastructure: - Amazon Web Services (AWS) - EC2, S3, RDS, VPC, IAM - Microsoft Azure - VMs, Storage, Azure AD, Networking - Google Cloud Platform - Compute, Storage, Networking - Cloud Migration and Hybrid Cloud Implementation - Cost Optimization and Resource Management -- Virtualization & Containerization: - VMware vSphere, ESXi, vCenter - Microsoft Hyper-V - Docker and Kubernetes - Container Orchestration and Management - Virtual Machine Deployment and Maintenance -- Network Administration: - Network Configuration and Troubleshooting - Firewall Configuration and Management - VPN Setup and Administration - Load Balancing and High Availability - Network Security and Monitoring --- TECHNICAL EXPERTISE - Operating Systems: Windows Server, Linux (Multiple Distributions), Unix, macOS - Database Systems: MySQL, PostgreSQL, Microsoft SQL Server, MongoDB, MariaDB - Web Servers: Apache, Nginx, IIS, Tomcat, LiteSpeed - Monitoring Tools: Nagios, Zabbix, Prometheus, Grafana, DataDog, New Relic - Backup Solutions: Veeam, Acronis, Bacula, AWS Backup, Azure Backup - Automation Tools: Ansible, Terraform, PowerShell, Bash Scripting, Python - Security Tools: Firewall Management, SSL/TLS, VPN Technologies, Security Auditing - Collaboration: Microsoft Exchange, Office 365, Google Workspace --- SERVICES PROVIDED -- Infrastructure Setup & Configuration - Server deployment and initial configuration - Network architecture design and implementation - Storage solution setup (SAN/NAS/DAS) -- Maintenance & Support - 24/7 system monitoring and alerting - Regular maintenance and updates - Performance optimization and troubleshooting - Incident management and resolution -- Cloud Services - Cloud migration planning and execution - Multi-cloud environment management - Cloud cost optimization - Disaster recovery setup -- Security Implementation - Security assessment and hardening - Backup and recovery strategy - Compliance management - Access control and authentication -- Documentation & Reporting - System documentation and runbooks - Regular performance reports - Capacity planning reports - Incident and change management documentation --- PROJECT EXPERIENCE - Successfully managed IT infrastructure for organizations ranging from startups to enterprises - Implemented high-availability solutions achieving 99.9% uptime SLA - Executed seamless cloud migrations with zero data loss - Designed and deployed disaster recovery solutions - Automated routine tasks reducing manual intervention by 70% - Optimized infrastructure costs resulting in 30-40% reduction in IT expenses --- PROFESSIONAL APPROACH -- Planning & Analysis - Thorough assessment of current infrastructure - Identification of improvement opportunities - Strategic planning aligned with business goals -- Implementation - Methodical deployment following best practices - Minimal disruption to business operations - Comprehensive testing and validation -- Support & Optimization - Proactive monitoring and maintenance - Continuous improvement initiatives - Regular performance reviews and optimization --- CERTIFICATIONS & QUALIFICATIONS - Microsoft Certified: Azure Administrator Associate - AWS Certified Solutions Architect - CompTIA Server+ and Network+ - ITIL Foundation Certified - Red Hat Certified System Administrator (RHCSA) --- AVAILABILITY & TERMS -- Engagement Types: - Hourly consultations - Fixed-price projects - Monthly retainer agreements - Emergency support services -- Communication: - Daily status updates - Weekly progress reports - Available via Upwork messages, email, Slack - Video conferencing for meetings -- Working Hours: - Flexible schedule across time zones - Emergency support available 24/7 - Response time within 2-4 hours -- WHY WORK WITH ME: Proven Track Record: Extensive experience managing diverse IT environments Reliable & Responsive: Quick turnaround times and consistent communication Cost-Effective Solutions: Focus on ROI and operational efficiency Security-First Approach: Emphasis on data protection and compliance Documentation: Comprehensive documentation for all implementations Knowledge Transfer: Training and support for your team Contact me today to schedule a consultation and take the first step toward optimizing your IT infrastructure.

  • System Administration
  • Domain Migration
  • Microsoft Outlook
  • Desktop Support
  • Windows Administration
  • Microsoft Azure
  • Microsoft Office
  • Office 365
  • Technical Support
  • Fortinet
  • Firewall
  • VMware Administration
  • Virtual Desktop Infrastructure
  • Microsoft Azure Administration
  • VPN
Mark R.

Missoula, Montana

$95/hr
4.6
381 jobs

I have 16+ years experience and I save you time & money with my meticulous work & advice for going forward. I've worked for individuals, businesses, startups and 501(c)(3) non-profits. Skills and experience include: • All aspects of WordPress, including PHP, jQuery, HTML and CSS, Genesis and custom themes, Bootstrap CSS and Javascript, and Advanced Custom Fields (ACF), SMTP and forms • DNS: configuration of all DNS records A, AAAA, CNAME, TXT, etc. at all DNS providers. SPF, DKIM and DMARC record configurations to ensure email deliverability for email providers such as Google Workspace and Office 365, and third-party email services such as Constant Contact, MailChimp, Hubspot, Klaviyo, Keap/Infusionsoft, etc. • Cloudflare: WAF firewalls and security, page rules and rate limiting, DNS configurations, SSL setup, country blocks, static hosting. • Technical SEO: Yoast and All in One SEO, XML sitemaps and the Google Search Console and Analytics. • Linux server administration (Ubuntu, AlmaLinux, Debian): Apache Nginx Litespeed, MySQL/MariaDB, PHP configurations, security and performance, Let's Encrypt SSLs. • Paid Memberships Pro setup and customizations. • Web hosts: WP Engine, Linode, Cloudways, Digital Ocean, Liquid Web, Kinsta, Pantheon (git), Flywheel, Pressidium and Amazon AWS. • Migrations from Joomla, ExpressionEngine, Drupal, Hubspot, TypePad, Movable Type, Blogger, Wild Apricot, and migrations from "plain" PHP & MySQL sites.

  • Linux
  • Ubuntu
  • Page Speed Optimization
  • MySQL
  • Firewall
  • Linux System Administration
  • WooCommerce
  • Theme Customization
  • Internet Security
  • WordPress
  • Cloudflare
  • PHP
  • Database Optimization
  • HTML5
Jaydev D.

London, United Kingdom

$30/hr
4.8
54 jobs

Most organizations already have Microsoft 365. What they often don't have is a well-structured system behind the way work actually gets done. That usually shows up as approvals running through email, processes living in spreadsheets, documents without proper version control, and teams spending time on work that should largely run itself. That's typically where I get involved. I work with organizations to design and build Microsoft 365 solutions that bring proper structure to internal operations - built on SharePoint, Power Apps, Power Automate, and Power BI. I've been doing this for over 10+ years, working with organizations across the UK and Europe - operational teams, regulated environments, enterprise business functions. The work spans SharePoint Online, SharePoint On-Premises, and the Power Platform depending on what the situation calls for. The kind of work I do most: Building Power Apps that replace spreadsheet-based processes with proper business applications. Designing approval workflows in Power Automate with clean routing logic, escalation handling, and audit trails. Setting up SharePoint environments that are structured for the long term - right permissions, right architecture, right governance from the start. Building Power BI dashboards that give operational teams actual visibility into what's happening. Delivering document management systems where documents go through proper lifecycle stages before they're published. Setting up SharePoint intranets and employee portals that connect properly with Teams and Outlook. Connecting Microsoft 365 to external systems through REST APIs and custom integrations. Building AI-powered automation using AI Builder for things like invoice processing and document data extraction. Projects I'm regularly brought in for include document control and approval systems, procurement and purchase order workflows, capital project authorization, employee onboarding and HR self-service, inspection and compliance management, resource and room booking, operational reporting, and multi-level approval systems across Finance, Operations, and Executive functions. I don't typically get involved in single-task work. Most of the time a business process has grown beyond what email and spreadsheets can handle, or an existing system wasn't built properly and needs rethinking. That's the kind of problem I work on. The way I approach it is practical and architecture-led - clean data structures, maintainable logic, clear permissions, and a solution that the business can actually manage and build on going forward. If that sounds like what you're dealing with, I'm happy to take a look at what you have and talk through what a properly built solution would look like.

  • Microsoft SharePoint
  • Microsoft Power Automate
  • Microsoft PowerApps
  • Microsoft Power BI
  • Business Process Automation
  • Microsoft SharePoint Development
  • Office 365
  • Document Management System
  • Solution Architecture
  • REST API
  • Microsoft Teams
  • Enterprise Architecture
  • Intranet Architecture
  • Microsoft Windows PowerShell
  • Microsoft 365 Copilot
  • Business Applications Development
  • Microsoft SharePoint Administration
  • Process Improvement
  • Microsoft Azure
  • Microsoft SharePoint Designer
Nevin D.

Chalakudy, India

$20/hr
4.9
802 jobs

I'm Nevin Davis, I have a degree and diploma in Computer Science and Engineering. I'm a redhat certified engineer with 8 years of experience as a server administrator. My strengths and skills are:- * Well knowledge in AWS, Google Cloud, Azure... etc * Sound knowledge in Linux/Unix like operating system. * Deep knowledge in cPanel/WHM. * Familiarize with Plesk, Interworx, Website Panel, Webmin, Directadmin, CyberPanel, HestiaCP. * Automated installation of Red Hat Enterprise Linux. * Network configuration and troubleshooting. * Server hardening. * Managing partitions and file systems. * Managing flexible storage with LVM. * User Management & Administration. * Managing selinux. * Basic creation and troubleshooting on scripting like Shell/Perl. * Installing and managing softwares. * Managing installed services. * Kernel re-configuration & parameter tuning. * Installation of patches and packages. * File sharing with FTP. * NFS configuration & administration. * Job Scheduling and Automating process using CRON. * XEN, OpenVZ virtualization. * RAID * Idera Back up server management. * Familiarize web servers- Apache, Litespeed, Nginx. * Deep knowledge in SolusVM. * Migration. * SSL Cert generation, installation. * IPMI, KVM console management. * Billing Module Management(whmcs,vision,osticket) * VPS, Shared and Dedicated server Management * Monitoring (Nagios) & troubleshooting with performance related issues. * Installation of Antivirus and Troubleshooting with virus related issues.

  • WordPress
  • cPanel
  • OpenVZ
  • Domain Migration
  • Red Hat Administration
  • WHMCS Development
  • SSL
  • Linux System Administration
  • CentOS
  • Web Host Manager
Muhammad Umer A.

Lahore, Pakistan

$25/hr
5.0
35 jobs

Hi, I’m Umer, a 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗣𝗹𝘂𝘀 𝗗𝗲𝘃𝗢𝗽𝘀 & 𝗖𝗹𝗼𝘂𝗱 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 𝘄𝗶𝘁𝗵 8+ 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗺𝘂𝗹𝘁𝗶-𝗰𝗹𝗼𝘂𝗱 experience helping global companies design, automate, and secure their IT infrastructure across AWS, Azure, and Google Cloud Platform (GCP). I specialize in building scalable, secure, and automated cloud environments — from provisioning to deployment, monitoring, and maintenance. Whether you’re a startup migrating to the cloud, or an enterprise seeking DevOps automation and security hardening, I deliver results that last. 🧩 𝗪𝗵𝗮𝘁 𝗜 𝗗𝗲𝗹𝗶𝘃𝗲𝗿 ☁️ Cloud: Azure & AWS & GCP 🐳 Containers & Orchestration: Docker, Docker Compose, Kubernetes (EKS) 🚀 CI/CD Pipelines: GitHub Actions, Jenkins, AWS CodePipeline, CircleCI 🏗️ Infrastructure as Code: Terraform, AWS CloudFormation, CDK 📈 Monitoring & Observability: CloudWatch, Prometheus, Grafana 💻 Scripting & Automation: Bash, Python ☁️ Automated deployments for Node.js, Python, PHP, .NET, React, and microservices and more. Automation Agentic AI & DevOps Engineer | CICD | Docker | Container | Hardening | Linux | Ansible | Cloud Engineer | AI | Claude code | VPS | Azure | AWS | GCP | Pipelines | Ubuntu | Kubernetes | Deployments Automation | Workflow Automation 🌐 Who I’ve Worked With Over the past 7 years, I’ve supported top organizations across the US and UK, remotely managing and scaling multi-cloud infrastructures. 🇺🇸 𝗣𝗿𝗮𝗰𝘁𝗶𝗰𝗲 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻𝘀 – 𝗥𝗲𝗺𝗼𝘁𝗲 (𝗨𝗦𝗔) 🇺🇸 𝗡𝘂𝗰𝗹𝗲𝘂𝘀 𝗥𝗖𝗠 – 𝗥𝗲𝗺𝗼𝘁𝗲 (𝗨𝗦𝗔) 🇺🇸 𝗩𝗼𝘂𝗰𝗵 – 𝗥𝗲𝗺𝗼𝘁𝗲 (𝗨𝗦𝗔) 🇬🇧 𝗖𝗮𝗿𝗲𝗡𝗖𝘂𝗿𝗲 𝗟𝗼𝗻𝗱𝗼𝗻 – 𝗥𝗲𝗺𝗼𝘁𝗲 (𝗨𝗞) 🇺🇸 𝗣𝗿𝗶𝗼𝗿𝗶𝘁𝘆𝗫𝘁𝗿𝗮𝗖𝗮𝗿𝗲 – 𝗥𝗲𝗺𝗼𝘁𝗲 (𝗨𝗦𝗔) 🇺🇸 𝗚𝗿𝗲𝗮𝘁 𝗟𝗮𝗸𝗲𝘀 𝗠𝗕𝗣𝗠 – 𝗥𝗲𝗺𝗼𝘁𝗲 (𝗨𝗦𝗔) 🔐 𝗖𝗹𝗼𝘂𝗱 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆 & 𝗖𝗼𝗺𝗽𝗹𝗶𝗮𝗻𝗰𝗲 IAM policy design and least-privilege access Firewalls, WAFs, SSL/TLS, encryption, and key management Security auditing, hardening, and patch management SPF, DKIM, DMARC configuration for secure mail delivery Compliance readiness: HIPAA, GDPR, SOC-2 (best practice enforcement) 🖥️ 𝗦𝘆𝘀𝘁𝗲𝗺 & 𝗦𝗲𝗿𝘃𝗲𝗿 𝗔𝗱𝗺𝗶𝗻𝗶𝘀𝘁𝗿𝗮𝘁𝗶𝗼𝗻 Linux (Ubuntu, CentOS, Debian) — setup, monitoring, performance tuning Windows Server (AD, DNS, DHCP, Group Policy) Virtualization: Proxmox VE, VMware, Hyper-V, VirtualBox Web & application hosting on Nginx, Apache, IIS, LAMP, LEMP, Caddy 📊 𝗠𝗼𝗻𝗶𝘁𝗼𝗿𝗶𝗻𝗴, 𝗕𝗮𝗰𝗸𝘂𝗽 & 𝗟𝗼𝗴𝗴𝗶𝗻𝗴 Prometheus, Grafana, ELK, Loki, CloudWatch, Azure Monitor Real-time alerting and resource monitoring Backup, replication, and failover configuration to minimize downtime 🖧 𝗡𝗲𝘁𝘄𝗼𝗿𝗸𝗶𝗻𝗴 & 𝗜𝗧 𝗦𝘂𝗽𝗽𝗼𝗿𝘁 Network design, VLANs, VPNs, MikroTik, Cisco routers Office 365 & Google Workspace setup, email relays, proxy servers Helpdesk & remote support for system troubleshooting and optimization 🌟 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲 Top Rated Plus with 100% client satisfaction and $10K+ earnings 7+ years of multi-cloud DevOps experience with proven client results Expertise across both Linux and Windows ecosystems Reliable, transparent, and solution-oriented approach Focused on security, scalability, and performance 📈 Let’s Build and Automate Your Cloud Looking for a DevOps Engineer, Cloud Engineer, or System Administrator who can design, automate, and secure your infrastructure across AWS, Azure, or GCP? Let’s collaborate to make your systems faster, safer, and more efficient. I take pride in long-term partnerships built on quality, communication, and reliability. 📩 𝗠𝗲𝘀𝘀𝗮𝗴𝗲 𝗺𝗲 𝘁𝗼𝗱𝗮𝘆 — 𝗹𝗲𝘁’𝘀 𝘁𝘂𝗿𝗻 𝘆𝗼𝘂𝗿 𝗶𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲 𝗴𝗼𝗮𝗹𝘀 𝗶𝗻𝘁𝗼 𝗿𝗲𝗮𝗹𝗶𝘁𝘆.

  • DevOps
  • Microsoft Azure
  • System Hardening
  • Linux
  • GitHub
  • Infrastructure as Code
  • DevOps Engineering
  • Kubernetes
  • AI Agent Development
  • Amazon Web Services
  • Containerization
  • Automation
  • Cloud Computing
  • Docker Compose
  • CI/CD
  • Claude
  • Google Apps Script
  • Google Workspace
  • Odoo
Ehteshamuddin M.

Phoenix, Arizona

$45/hr
4.5
78 jobs

I build and run Production Infrastructure on AWS, GCP, Azure and on-prem. Most of my work the last few years has been Kubernetes (EKS, GKE, AKS, and bare metal RKE2 with Rancher) and getting that infrastructure through compliance audits: HIPAA, SOC 2, PCI DSS, NIST 800-53. 10+ years in DevOps. Top Rated Plus, 100% Job Success. 𝙎𝙤𝙢𝙚 𝙧𝙚𝙘𝙚𝙣𝙩 𝙥𝙧𝙤𝙟𝙚𝙘𝙩𝙨 𝙩𝙤 𝙜𝙞𝙫𝙚 𝙮𝙤𝙪 𝙖𝙣 𝙞𝙙𝙚𝙖 𝙤𝙛 𝙬𝙝𝙖𝙩 𝙄 𝙖𝙘𝙩𝙪𝙖𝙡𝙡𝙮 𝙙𝙤: Built an on-prem RKE2 cluster from scratch for a company preparing for SOC 2 and HIPAA. Rancher for management, Cilium with WireGuard for encrypted pod traffic, GPU nodes for their ML workloads, Longhorn for storage, Velero for backups, ArgoCD for deployments. Also enforced SSO through Entra ID on every cluster and SSH access point because their auditors required it. Took a healthcare data platform through HIPAA hardening on AWS. ECS Fargate, Aurora PostgreSQL, private subnets, TLS everywhere, proper secrets handling. Phase one was making it work, phase two was making it pass an audit. Different skill sets, I do both. Modernized AWS infrastructure for a holding group running four brands. Moved everything to ECS Fargate and Aurora Multi-AZ, set up blue-green deployments, CloudFront in front. Midway through we found a security breach in their GitHub org and I handled the full remediation across every repo. Fixed a production Aurora MySQL performance problem that had their app timing out during peak hours. Root cause was tmp table spill to disk. Tuned it, added a reader, no downtime. I also do a lot of unglamorous work that keeps things running: CI/CD pipelines (GitHub Actions, GitLab CI, ArgoCD), Terraform for everything, monitoring with Prometheus and Grafana, cost cleanup, VPN and networking issues, database migrations. Industries I know well: Healthcare (HIPAA is second nature at this point), Fintech and Payments (PCI DSS), and B2B SaaS. 𝙒𝙝𝙖𝙩 𝙮𝙤𝙪 𝙜𝙚𝙩 𝙬𝙤𝙧𝙠𝙞𝙣𝙜 𝙬𝙞𝙩𝙝 𝙢𝙚: Infrastructure that is written down in code, documented, and reproducible. I answer messages fast and I will tell you upfront if something is a bad idea or if I am not the right person for it. Send me your project details and current setup. I will give you an honest read on scope and effort before you spend anything.

  • Kubernetes
  • Terraform
  • Docker
  • DevOps
  • Google Cloud Platform
  • Amazon Web Services
  • Cloud Computing
  • Cloud Architecture
  • CI/CD
  • Microsoft Azure
  • DigitalOcean
  • HIPAA
  • SOC 2
  • Ansible
  • Python
  • Data Warehousing & ETL Software
  • Django
  • Linux System Administration
  • AWS CloudFormation
  • Git

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