System Administrators Untuk Diupah
Menunjukkan 211 hasil
Freelancers Ditaja
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I started with BeOS in 2002, because of a friend, who showed me something other than Windows, Always I worked repair PC & Laptops. Now I have more 10 years of experience in Server Linux. I can manager servers dedicated, servesr VPS, servers shared, etc. Setup and management you server; Apache/Nginx/Tomcat. SMTP...I started with BeOS in 2002, because of a friend, who showed me something other than Windows, Always I worked repair PC & Laptops. Now I have more 10 years of experience in Server Linux. I can manager servers dedicated, servesr VPS, servers shared, etc. Setup and management you server; Apache/Nginx/Tomcat. SMTP Postfix, POP/IMAP Dovecot. FTP Vsftpd, Proftpd, Pure-ftpd-mysql. Dns Bind9, dnsmasq. File Server & printer Samba (dc-ac). Network administrator: isc-server-dhcp, openvpn, etc. Install and renew SSL certicate. All services on cloud; AWS, Azure, etc. Also website and E-mail migrations. ALL panels and web managers. Management all Linux distributions. Setup, security and optimization your server. __________________________ VERY IMPORTANT!!! “Hi I'm Matias, someone is trying to impersonate me, this account is the only one active and verified by freelancer! I DON'T USE ANY OTHER MEANS OF CONTACT, ONLY FREELANCER CHAT!” ----------------------------------------- kurang
Upah MaTGaPa
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engkarimismail engkarimismail
$50 USD / jam
✅Senior Network & System Engineer | Security|VOIP✅Malaysia✅ About Me I am an experienced IT professional with expertise in server administration, networking, virtualization, and security. My skill set spans managing server operating systems, configuring directory services, implementing DNS/DHCP solutions, and deploying virtualization platforms. I have a strong background in...✅ About Me I am an experienced IT professional with expertise in server administration, networking, virtualization, and security. My skill set spans managing server operating systems, configuring directory services, implementing DNS/DHCP solutions, and deploying virtualization platforms. I have a strong background in firewalls, scripting, containerization, and database management. Additionally, I specialize in mail servers, backup systems, and cloud technologies. With advanced networking skills, including Cisco routing, VLAN management, VoIP/IP telephony, and penetration testing, I am well-equipped to handle complex IT infrastructures. I am dedicated to delivering reliable solutions, ensuring data integrity, and enhancing system performance. ✅Send me now 24/7 Availability Unlimited Revisions Fast Response ✅ Server Operating Systems Windows Server (2003 to 2024) | Ubuntu | CentOS | Debian | RHEL ✅ Directory Services Active Directory | OpenLDAP ✅ DNS and DHCP Windows Server DNS | DHCP | Linux DNS | DHCP ✅ Virtualization Microsoft Hyper-V | VMware ESXi | vCenter | Proxmox VE ✅ File Servers IIS FTP | proftpd | FileZilla | FTP Server | Samba ✅ Web Servers Apache | NGINX | Microsoft IIS ✅ Scripting and Automation PowerShell scripting | Bash scripting ✅ Containers Docker | Windows Subsystem for Linux (WSL) ✅ Backup Systems Veeam Backup | Iperius Backup | UrBackup ✅ Mail Servers Mailcow | Microsoft Exchange (2000–2019) | MailWizz | Postfix | EXIM ✅ Database Servers MySQL | PostgreSQL | MariaDB ✅ Firewalls and Security MikroTik | PFSense | Cisco Firewalls ✅ Networking Skills Cisco Routing and Switching | VLANS | OSPF | VoIP and IP Telephony | Network Penetration Testing Access Control Lists (ACLs) Security (MITM Attack Mitigation) ✅ Recovery Services Password recovery for accounts and routers | Disaster recovery planning ✅ VOIP Service Freepbx | freeswitch | CME | IP TELEPHONY | 3CX SYSTEMS ✅ Cloud Service AWS, DigitalOcean, Hetzner, Azure, Google Cloud Platform, IBM Cloud, Oracle Cloud, Alibaba Cloud, Contabo, Seva kurang
Upah engkarimismail
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With years of experience in web development and server management, I bring a wealth of expertise to the table. Whether you're a budding entrepreneur, a small business owner, or an established enterprise, my skills and dedication are at your service.With years of experience in web development and server management, I bring a wealth of expertise to the table. Whether you're a budding entrepreneur, a small business owner, or an established enterprise, my skills and dedication are at your service. kurang
Upah sabdsouza
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About me I have worked over 20 years at IT and telecom companies in the following positions: IT support, system administrator, applications administrator, and monitoring administrator expert. I am "System Administration and IT Infrastructure Services" certified I follow KISS methods. I understand the OSI layer. With...About me I have worked over 20 years at IT and telecom companies in the following positions: IT support, system administrator, applications administrator, and monitoring administrator expert. I am "System Administration and IT Infrastructure Services" certified I follow KISS methods. I understand the OSI layer. With me, it is easy to set up systems. I am not picky about what systems to use, but I do have experience with what to use. I know the following operating systems + distros: Debian, Ubuntu, Gentoo, SUSE, Red Hat, CentOS, Rocky Linux, AlmaLinux, Arch Linux, FreeBSD, NetBSD, OpenBSD, Sun Solaris, plus MS Windows servers I also know the following systems: * Web servers: Apache, Nginx, Lighttpd, Litespeed, Hiawatha. * Java web servers: Tomcat, Jrun, JBoss * Javascript: Node.js, npm * Proxy systems: Haproxy, Varnish, Squid. DB servers: MySQL (and forks, including MariaDB), PostgreSQL * Mail systems: Postfix, Exim, Dovecot, and implementing DKIM, SPF, MX, and DMARC * Monitoring systems: Nagios, Zabbix, Cacti, Grafana * SMS: SMSC, Kannel * DNS: Bind, Djbdns, Dnsmasq. * VPS: VMware, Hyper-V, Proxmox, bhyve, KVM, Xen, OpenStack... * Containers: Docker, Podman, LXC, jail, Kubernetes * High Computing: OpenHPC, SLURM, MPI, and related * Cloud providers: AWS, DigitalOcean, Azure… I troubleshoot easily My knowledge does not stop here. Let's chat Please see my reviews of my previous works PS! As bonus, with my bid, you will get one week of free support for work done kurang
Upah servermaster
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Senior Systems & Security Engineer with 15+ years in enterprise-grade IT. I design, harden, and operate high-availability infrastructure, and I streamline delivery with automation and clean processes. My focus: reliability, security, and clear documentation—so changes are low-risk and handovers are...Senior Systems & Security Engineer with 15+ years in enterprise-grade IT. I design, harden, and operate high-availability infrastructure, and I streamline delivery with automation and clean processes. My focus: reliability, security, and clear documentation—so changes are low-risk and handovers are effortless. Strengths: Infrastructure architecture & operations (Linux/Windows, virtualization, networking) Security hardening, identity & access, monitoring/observability Automation & DevOps practices (CI/CD, config management, IaC) Migrations and upgrades with minimal downtime Concise runbooks, risk-aware planning, and stakeholder-friendly communication Certifications: CompTIA Security+, Microsoft MCSE/MCSA/MCITP Languages: English (C2), German (C1), native Romanian Location: Germany • NDA-friendly • Reliable and responsive kurang
Upah iosifpeterfi
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kashifnadeem86 kashifnadeem86
$60 USD / jam
Azure Solutions Architect Expert & DevOps EngineerPakistanAzure Solutions Architect Expert & DevOps Engineer I’m a certified Azure Solutions Architect and DevOps Engineer with over 10 years of experience in designing, deploying, and automating secure, scalable, and high-performance infrastructures across Azure, AWS, and other platforms. ✅ Certifications: ✅ AZ-400:...Azure Solutions Architect Expert & DevOps Engineer I’m a certified Azure Solutions Architect and DevOps Engineer with over 10 years of experience in designing, deploying, and automating secure, scalable, and high-performance infrastructures across Azure, AWS, and other platforms. ✅ Certifications: ✅ AZ-400: Designing and Implementing Microsoft DevOps Solutions ✅ AZ-305: Azure Solutions Architect Expert ✅ AZ-104: Azure Administrator Associate ✅ Azure DevOps Assessment (Score: 18473) ☁️ Cloud Expertise ✅ Microsoft Azure Networking & Security: Azure Front Door, Application Gateway, Load Balancer, VNet, NSG, VPN Gateway, Private Endpoints, DNS Management Compute & Containers: Azure Virtual Machines, Azure Kubernetes Service (AKS), Azure Container Instances (ACI), Azure Functions App Services & Integration: Azure Web Apps, Azure Logic Apps, Azure API Management, Azure DevOps (CI/CD Pipelines) Data & AI: Azure SQL Database, Blob Storage, Azure AI Services, Azure Batch Identity & Access: Azure Entra ID (Azure AD), B2B/B2C Identity, Hybrid AD Join, Role-Based Access Control (RBAC) Governance & Monitoring: Azure Policies, Resource Graph, Cost Management, Azure Monitor, Log Analytics ✅ AWS Cloud Compute & Containers: EC2, RDS, EKS, Lambda, Lightsail Networking & Security: VPC, IAM Policies, SES, Route 53, CloudWatch, Load Balancing, CloudFront Storage & DevOps: S3, ECR, Backup Solutions, Serverless Architectures ✅ Other Cloud Platforms Google Cloud Platform (GCP): Infrastructure setup and VM provisioning DigitalOcean, Vultr, OVH, Hetzner: DNS management, resource provisioning, LAMP/LEMP stacks, firewalls ☁️ DevOps, IaC & Automation Infrastructure as Code (IaC): Terraform, ARM Templates, Ansible, Puppet, Chef Automation & Scripting: PowerShell, Bash, Python, Chocolatey, GitHub Actions, Azure Automation CI/CD: Azure DevOps Pipelines, GitHub Actions (YAML & Classic) Containers & Orchestration: Docker, Kubernetes, LXC Patch Management & Hardening: Windows, RHEL, Ubuntu ☁️ Open Source App Hosting Matrix Synapse: Federation setup, homeserver deployment, authentication integration Keycloak: SSO and OIDC integration with Jitsi, Nextcloud, etc. Web Hosting: Apache, Nginx, Plesk, cPanel, Webmin Applications: Odoo, Nextcloud, Plainpad, FrePPLe Mail Servers: Postfix, Dovecot for secure org-wide or bulk email DNS & Domains: BIND, Cloudflare, Namecheap DNS APIs ✅ If you’re looking for a reliable engineer who can build, secure, and automate cloud-native and hybrid infrastructures — let’s connect and make your systems future-ready. kurang
Upah kashifnadeem86
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I have 7 years of experience deploying and maintaining a wide range of systems and services. My expertise includes: ✅ Server Operating Systems: Windows Server 2003 to 2024, Ubuntu, Debian, RHEL, CentOS. ✅ Directory service: Active Directory, OpenLDAP. ✅DNS, DHCP: Windows Server DNS, DHCP and Linux DNS, DHCP...I have 7 years of experience deploying and maintaining a wide range of systems and services. My expertise includes: ✅ Server Operating Systems: Windows Server 2003 to 2024, Ubuntu, Debian, RHEL, CentOS. ✅ Directory service: Active Directory, OpenLDAP. ✅DNS, DHCP: Windows Server DNS, DHCP and Linux DNS, DHCP services. ✅ Virtualization: Microsoft® Hyper-V, VMware Hypervisors (ESXI, vCenter), Proxmox, VirtualBox. ✅ Cloud Computing Platforms: AWS Amazon Web Services, Microsoft®, Google Cloud Platform(GCP). ✅ Self-Hosted Clouds: NextCloud, OwnCloud, Seafile. ✅ File servers: IIS FTP, proftpd, FileZilla FTP Server, SAMBA. ✅ Web servers: IIS, APACHE, NGINX ✅Scripting: PowerShell scripting, Bash Scripting ✅Containers: DOCKER, Windows Subsystem for Linux (WSL). ✅Backup Systems Veaam Backup, Iperius Backup, UrBackup. ✅ Mail servers: POSTFIX, EXIM, Microsoft Exchange 2000 to 2019, QMAIL ,Zimbra ,Mail Enable , SmarterMail, hMail. ✅ Database servers: MySQL, PostgreSQL ✅ Firewalls: Windows firewall,ISA/Forefront TMG, MikroTik, PFSense, Zywall and other Routers; ✅ Data Storage Systems: Netapp, FAS, EMC, VNX; ✅NAS: FreeNAS, TrueNAS ,Synology, QNAP, Buffalo ✅ Monitoring ZABBIX, CACTI, NAGIOS ✅ Hosting Panels: WHM-cPanel, PLESK, CyberPanel, aaPanel Why Choose Me? ✅24 hours availability ✅Unlimited revisions ✅Fast response Microsoft® Certified ** MCSA | MCSE | MCT ** kurang
Upah AZTURK1
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I design and build high-availability, production-grade infrastructure for SaaS platforms, hosting providers, and enterprise systems. With 20+ years of hands-on experience, I help businesses deploy scalable, secure, and cost-efficient systems using Proxmox, Kubernetes, and cloud platforms like AWS & Azure. I specialize...I design and build high-availability, production-grade infrastructure for SaaS platforms, hosting providers, and enterprise systems. With 20+ years of hands-on experience, I help businesses deploy scalable, secure, and cost-efficient systems using Proxmox, Kubernetes, and cloud platforms like AWS & Azure. I specialize in solving complex infrastructure challenges — from building full cloud platforms to fixing critical production issues under pressure. kurang
Upah mrkimoz
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We are a Canadian-Ukrainian team of highly professional IT specialists (software developers, designers, system administrators and Internet marketers) with more than 20 years expertise. OUR MAIN SPECIALIZATIONS: 1) WEB DEVELOPMENT & SOFTWARE DEVELOPMENT 1.1) FRONT-END: HTML, HTML5, CSS3, Bootstrap, TailwindCSS ...We are a Canadian-Ukrainian team of highly professional IT specialists (software developers, designers, system administrators and Internet marketers) with more than 20 years expertise. OUR MAIN SPECIALIZATIONS: 1) WEB DEVELOPMENT & SOFTWARE DEVELOPMENT 1.1) FRONT-END: HTML, HTML5, CSS3, Bootstrap, TailwindCSS 1.2) JAVASCRIPT: JavaScript, ES6+, Typescript, Node.js, MEAN, MERN, MEVN, Angular, React.js, Vue.js, Nuxt.js, Next.js, Gatsby.js, jQuery 1.3) BACK-END 1.3.1) LAMP (Linux, Apache, MySQL, PHP) including Symfony, Laravel, Yii, Zend, CodeIgniter, CakePHP 1.3.2) Python (Python, Django, Flask, FastAPI) 1.3.3) .NET stack technologies (C#, ASP.NET, .NET Core) 1.4) OPEN SOURCE SOLUTIONS 1.4.1) E-commerce Platforms: Shopify, Magento, WooCommerce, Prestashop, OpenCart, BigCommerce, Shopware, osCommerce 1.4.2) CMS: WordPress, Drupal, Joomla, TYPO3 etc. 1.4.3) CRM: SuiteCRM, SugarCRM 2) MOBILE DEVELOPMENT 2.1) Android native development: Java, Kotlin 2.2) iOS native development: Swift, Objective-C 2.3) Cross platform development: Flutter, React Native, Ionic 3) DESIGN 3.1) Website Design (UI (User Interface), UX (User Experience) etc.) 3.2) Graphic Design (Creative Design, Digital Design, Advertisement Design etc.) 3.3) Corporate Identity (Brand Boooks, Business Cards, Logos, LetterHeads etc.) 4) INTERNET MARKETING 4.1) Social Media Marketing (Linkedin, Xing, Facebook, YouTube, Instagram etc.) 4.2) SEO (SEO Copywriting, SEO Auditing, White Hat SEO) 4.3) PPC Marketing (Google Adwords, Google Ads, Facebook Ads, YouTube Ads, Instagram Ads etc.) 4.4) Email Marketing 5) MANAGED SERVICES 5.1) 24/7 TECHNICAL SUPPORT 5.2) SYSTEM ADMINISTRATION SERVICES Our team of high qualified System Administrators have huge experience with technologies covering: - different distributions of OS Linux, Unix and MS Windows Server systems; - different types of virtualization (ProxMox, Virtuozzo, OpenVZ, KVM, XEN, VMware, Hyper-V); - VPN/DNS/IPTables/Firewalls/web servers/mail servers configuration and tuning etc.; - cloud solutions (AWS, MS Azure, Google Cloud, Alibaba Cloud, OVHcloud, DigitalOcean, Linode etc.). 6) HOSTING SERVICES provided by our hosting subdivision under trade mark "TanHost" 6.1) Cloud based solutions (e.g. configuration and technical support of Private Clouds); 6.2) Сollocation services, the providing for rent dedicated and VPS/VDS (virtual servers); 6.3) Shared Hosting; 6.4) Domain names registration services; 6.5) SSL Certificates. 7) EMBEDDED SYSTEMS 7.1) Embedded software development 7.2) Internet of Things (IoT) 7.3) Microcontrollers programming 7.4) Arduino microcontrollers programming OUR CREDO: Reputation – is above anything else! We help our customers to grow success and we grow together with our customers! We are flexible to meet our clients' needs. We make it simple... kurang
Upah tangramua
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Preferred Freelancer with 8+ years of experience ⭐ Top 1% Freelancer Web developer specializing in solving technical problems fast. ▶ What I Fix & Build ➡️ WordPress (bugs, speed, security, migrations) ➡️ Full-stack web apps (MERN/React/Next.js) ➡️ Frontend (HTML, CSS, JavaScript, responsive design) ➡️ Backend...Preferred Freelancer with 8+ years of experience ⭐ Top 1% Freelancer Web developer specializing in solving technical problems fast. ▶ What I Fix & Build ➡️ WordPress (bugs, speed, security, migrations) ➡️ Full-stack web apps (MERN/React/Next.js) ➡️ Frontend (HTML, CSS, JavaScript, responsive design) ➡️ Backend (PHP, Node.js, databases) ➡️ IT & server issues (configuration, deployment) ➡️ Performance optimization & malware removal ▶ Why Work With Me - 50 projects with 5.0★ rating - 100% on-time delivery and 96% on-budget - Fast response and clear communication - Permanent fixes not temporary patches - Reliable support after project delivery Available for urgent projects. Let's solve your technical challenges efficiently kurang
Upah kerolosgerges
