Hire the Best System Administrators

Clients rate our System Administrators
Rating is 4.8 out of 5.
4.8/5
Based on 4,237 client reviews
Izhar H.

Karachi, Pakistan

$40/hr
5.0
21 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
Ehteshamuddin M.

Phoenix, Arizona

$25/hr
4.5
74 jobs

🎯 100% Refund If I set the wrong expectations and can’t deliver. No questions asked. Top-Rated Plus, Upwork Top 1 Percent, Highly recommended. What do I offer: 1- 100% work satisfaction 2- 24/7 Support 3- On-time delivery 4- Enterprise quality 5- 15 Days of free support after completion of the project Cloud Architect with 10+ years of DevOps experience, specializing in scalable, platform-agnostic cloud infrastructures. Proven track record in high-scale environments. Proficient in Infrastructure as Code, automation, and scripting, with expertise in CI/CD, Cloud Services, and Infrastructure Automation. Skilled in building, deploying, and managing applications on AWS, GCP, Azure, and OCI, with a focus on robust monitoring and observability. ➜ Zazmic Inc, San Francisco, CA • Automation Tools: Terraform, Ansible • Cloud Platforms: GCP • Containerization: Docker, Helm charts • CI/CD: GitLab CI • Monitoring: HPA, Cloud Armour • Databases: Different kinds of databases on GCP ➜ Tripleseat, Concord, Massachusetts • Cloud Platforms: Azure, GCP • Containerization: Docker • CI/CD: Azure Pipelines, Azure DevOps • Monitoring: Grafana, Prometheus ➜ Century Communities, Inc., Greenwood Village, CO • Cloud Platforms: AWS, Oracle Cloud • Automation Tools: Lambda functions, Ansible • Containerization: Docker, AWS ECS, EKS • CI/CD: CircleCI, GitHub Actions, AWS CodePipeline • Monitoring: CloudWatch, CloudFront ➜ Summary: • Proficient in Kubernetes, I architect and manage clusters to facilitate agile and scalable application deployment. • Skilled in Infrastructure as Code (IaC), I employ Terraform, Ansible, and Chef to automate configuration and ensure uniform environments. • With hands-on experience in CI/CD pipeline creation and maintenance using Jenkins, GitLab CI, and Azure DevOps, I ensure the efficient and reliable delivery of software products. • Possessing a robust background in Linux/UNIX system administration, including expertise in managing RHEL environments. • Armed in scripting with Bash and Python to streamline automation processes and optimize operational efficiency. • Good Know how of monitoring and logging tools such as Elasticsearch, CloudWatch, Prometheus, and Grafana, enabling proactive monitoring of infrastructure and application health. • Experienced in VMware virtualization, proficiently managing VMs, executing V-motion operations, and maintaining Snapshots. • Adaptable to fast-paced 24/7 production environments, providing responsive on-call support, including weekends. • Successfully deployed and managed scalable microservices on Kubernetes clusters across GCP and AWS platforms. • Expertise extends to migrating on-premises workloads to the cloud, focusing on performance optimization and cost efficiency. • Possess proactive problem-solving and troubleshooting skills essential for maintaining high-quality production environments. • Strong communication and collaboration abilities, facilitating effective bridging of the gap between development and operations teams. ➜ Tools: Git, Ansible, AWS CloudFormation, ELK, GitLab, GitLab CI/CD, Terraform, Docker Compose, Grafana, Telegraf, CircleCI, Traefik, Amazon CloudWatch, Amazon Elastic Container Service (Amazon ECS), GitHub, VPN, AWS Fargate, Amazon CloudFront CDN, AWS IAM, Amazon Virtual Private Cloud, Docker Swarm, NGINX, Puppet, Jenkins, Amazon EKS, Amazon Simple Queue Service, RabbitMQ, Celery, TeamCity, Nagios, Makefile, AWS CodeDeploy, Confluence, AWS CodeBuild ➜ Platforms: Linux, Docker, Amazon Web Services, AWS Elastic Beanstalk, Amazon EC2, Kubernetes, AWS Lambda, Windows, Apache Kafka, JVM, Heroku, Azure, WordPress, New Relic, Windows Server, Google Cloud Platform, Blockchain, Rancher ➜ Storage: Amazon Aurora, Amazon S3, MySQL, MongoDB, InfluxDB, Redis, On-premise, Amazon DynamoDB, Redis Cache, Elasticsearch, MySQL, Databases, PostgreSQL ➜ Languages: Python, Bash, Java, PHP, Markdown, Go, JavaScript, SQL, TypeScript ➜ Frameworks: Flask, Django, Windows PowerShell, .NET, Serverless Framework ------------------------------------------------------------------------------------------------------ #CloudArchitect #DevOps #Kubernetes #Terraform#Azure #GCP #Docker #CI_CD #InfrastructureAsCode #CloudMigration #DevOpsEngineer #Automation #CloudInfrastructure #Microservices #CloudSecurity #NetworkSecurity #AWSCloud #AzureCloud #Serverless #AWSLambda #AzureDevOps #GitLabCI #GitHubActions #Linux #Unix #Bash #Python #GoLang #Java #Git #Ansible #Jenkins #NGINX #ApacheKafka #Databases #SQL #MySQL #PostgreSQL #MongoDB #Redis #DynamoDB #CloudStorage #S3 #CloudWatch #BackendInfrastructure #WebInfrastructure

  • 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
Inderjit S.

Toronto, Canada

$60/hr
4.8
241 jobs

I am a Cloud Solutions Architect & DevOps Engineer with over 16 years of IT experience, certified in AWS, Azure, GCP, CompTIA Security+, and Kubernetes (CKA). I specialize in designing, automating, and managing scalable, secure, and cost-optimized infrastructures for startups, enterprises, and MSPs. My approach combines Cloud Architecture, DevOps automation, and AI-driven workflows, leveraging tools like ChatGPT , Claude and OpenHands to design modern applications, automate processes, and accelerate development cycles. This enables businesses to improve efficiency, reduce downtime, and scale confidently. Core Competencies Cloud Architecture & Migration AWS, Azure (AKS, App Services, AI/ML), GCP, Rackspace, DigitalOcean Hybrid and multi-cloud solutions VMware ESXi, Hyper-V, Proxmox, VSAN migrations DevOps & Automation CI/CD: Jenkins, Azure DevOps, GitHub Actions, AWS CodePipeline Infrastructure as Code: Terraform, CloudFormation, ARM templates Containers: Docker, Kubernetes (CKA-certified) Workflow automation using N8N and Cursor AI AI-assisted development using ChatGPT and Claude for pipeline optimization, scripting, and application design AI/ML & AIOps AWS SageMaker, Lambda, Rekognition, Azure Cognitive Services Monitoring: Datadog, Dynatrace, Splunk, ELK AI-driven automation and incident remediation LLM-based automation using ChatGPT and Claude Security & Compliance IAM: Okta, Keycloak, Auth0, Azure AD, JumpCloud Compliance: SOC 2, PCI DSS Security: VPNs, SSL/TLS hardening, firewalls Systems & Tools Windows Server (2012–2022), Linux (Ubuntu, CentOS, RHEL) Web servers: IIS, Nginx, Apache, Tomcat, Node.js Databases: MySQL, PostgreSQL, MSSQL What I Deliver Cloud migration and architecture design across AWS, Azure, GCP End-to-end DevOps implementation with CI/CD, IaC, and automation AI-powered workflows using ChatGPT, Claude, N8N, and Cursor AI Monitoring, observability, and auto-remediation solutions Secure and compliant infrastructure design 24/7 infrastructure support, incident management, and disaster recovery Cost optimization through right-sizing and scaling strategies Why Clients Work With Me 16+ years of hands-on experience in cloud and infrastructure Certified across AWS, Azure, and GCP Strong expertise in integrating AI tools (ChatGPT & Claude) into real-world DevOps and automation workflows Proven track record with startups, SMEs, and enterprise clients Flexible availability across US, Canada, Europe, and APAC time zones Strong communication and collaboration skills Let’s Build Smarter, Faster, and More Secure If you’re looking for a Cloud Architect & DevOps Engineer who can combine cloud expertise with AI-driven automation (ChatGPT + Claude+OpenHands) to design scalable systems and modern applications, let’s connect. I can help you streamline operations, optimize costs, and accelerate innovation while ensuring reliability and security.

  • Microsoft Azure
  • Linux System Administration
  • Firewall
  • Amazon EC2
  • DevOps
  • Windows Administration
  • Kubernetes
  • Web Hosting
  • VMware Administration
  • CI/CD
  • Single Sign-On
  • Managed Services
  • Infrastructure as Code
  • Cloud Computing
  • Docker
Svetozar B.

Belgrade, Serbia

$35/hr
5.0
5 jobs

Systems Administrator specializing in Linux, VMware, Hyper-V, Windows Server, Oracle databases, infrastructure troubleshooting, security incident response, virtualization, and production systems support. I help businesses investigate security incidents, recover compromised systems, harden infrastructure, stabilize production environments, and resolve complex Linux, Windows, virtualization, and hosting issues. My experience includes: ✔ Security incident response & malware remediation ✔ Server hardening & security auditing ✔ SSH, access control & authentication hardening ✔ VMware & Hyper-V virtualization ✔ Windows Server administration ✔ Linux systems administration ✔ Oracle Database administration & troubleshooting ✔ Infrastructure troubleshooting & performance analysis ✔ RAID, storage & recovery diagnostics ✔ VPS, dedicated server & hosting environments ✔ Backup & disaster recovery support ✔ PowerShell & Bash automation ✔ Email, DNS & server migrations ✔ Monitoring, stability & capacity planning Recent projects include security incident response and malware remediation across 155+ WordPress websites, Hyper-V VM scaling and performance stabilization, RAID recovery diagnostics on HPE servers, Linux/WHMCS migrations, Oracle environment troubleshooting, mail infrastructure troubleshooting, and production environment recovery. I focus on identifying root causes quickly, minimizing downtime, and delivering practical, production-ready solutions for critical systems and business infrastructure.

  • System Administration
  • Windows Server
  • Oracle Database Administration
  • Linux System Administration
  • Bash
  • System Monitoring
  • System Automation
  • Deployment Automation
  • Troubleshooting
  • Microsoft Hyper-V Server
  • Virtualization
  • VMware vSphere
  • VMware ESX Server
  • Microsoft Windows PowerShell
  • Cybersecurity Management
  • Information Security
  • Malware Removal
  • WordPress Security
  • Incident Response Plan
  • Network Security
Kirti P.

Ahmedabad, India

$39/hr
4.6
22 jobs

Whether you're starting fresh or trying to fix what's already there, I help teams build modern, scalable, user-friendly business solutions using the Microsoft ecosystem. With 18+ years of experience and a Microsoft MVP award in Business Applications, I specialize in: ✔ Full-cycle SharePoint development (intranet portals, project hubs, HR platforms) ✔ Enterprise-grade Power Apps and Power Automate solutions from scratch ✔ Seamless Power BI dashboards that drive decision-making ✔ Smart Microsoft Teams & Copilot automation ✔ Robust Azure & Graph API integrations ✅ What I Deliver 🆕 Fresh Builds (From Concept to Launch): ✔ SharePoint Online/2019/2016 solutions — tailored to your business model ✔ Custom Power Apps (Canvas, Model-Driven, Portals) integrated with Teams and Dataverse ✔ Full-stack Power BI solutions — including embedded dashboards and real-time metrics ✔ Teams + Power Automate + Copilot setups for smart team collaboration and automation ✔ New implementations of Microsoft 365 from zero — governance, security, rollout strategy 🛠 Rescue & Modernization Projects: ✔ Migrating or fixing poorly built SharePoint environments ✔ Replacing Excel/email/manual processes with streamlined Power Platform solutions ✔ Cleaning up messy Power Apps & flows ✔ Redesigning old portals for performance and user experience 🎯 Tech Expertise SharePoint (2010–2019, Online) | SPFx | Power Platform Power Apps | Power Automate | Power BI | Microsoft Teams | Copilot Dataverse, Azure Functions, Logic Apps, Graph API .NET, C#, React, Angular, JavaScript, jQuery SQL Server, NoSQL, Azure/AWS 🎓 Credentials 🥇 Top Rated Plus by Upwork 🥇 100% Job Success 🥇 Microsoft Most Valued Professional (MVP) 🥇 Microsoft Certified Trainer (MCT) 🥇 Microsoft Certified Professional (MCP) 🥇 Microsoft Certified SharePoint expert 🥇 Microsoft Certified: Power Platform App Maker Associate 🥇 Microsoft 365 Certified: Teams Administrator Associate 🥇 Microsoft Certified: Power Platform Fundamentals 🥇 Microsoft 365 Certified: Fundamentals 🥇 Microsoft Specialist: Programming in HTML5 with JavaScript and CSS3 🥇 Microsoft Certified Technology Specialist: SQL Server 2008, Implementation and Maintenance 🔍 Who I Work With Industries I’ve helped: 🏥 Healthcare, 🏗 Construction, 🎓 Education, 💼 Legal, 📦 Manufacturing, 💻 Tech Startups Stakeholders I collaborate with: CIOs, Project Managers, IT Admins, HR Leads, Operations, SMEs 🤝 Let’s Work Together If you need: 📝 A complete SharePoint/Power Platform build 📝 Migration from legacy systems 📝 Automation across Microsoft 365 📝 A real partner to architect the solution, not just code it Send me the problem you're trying to solve — even if it's messy, half-baked, or unclear. I’ll tell you how I’d approach it, what it'd cost, and what it'd take. 📨 Let's connect and build something Great.

  • Microsoft SharePoint
  • Microsoft SharePoint Administration
  • Microsoft SharePoint Designer
  • Microsoft SharePoint Development
  • Microsoft Power Automate
  • Microsoft 365 Copilot
  • Microsoft Power Automate Administration
  • Microsoft PowerApps
  • Office 365
  • Bot Development
  • React
  • Angular
  • Automated Workflow
  • Microsoft Office SharePoint Server
  • Microsoft Certified Professional
  • Microsoft Azure
  • Microsoft Certified Information Technology Professional
  • Document Management System
  • Microsoft Power BI
  • Microsoft Power BI Development
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

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