System Administrators para contratar
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Freelancers patrocinados
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Hi, I am a Linux System Administrator with over 10 years of expertise in web hosting, and malware remediation. I specialize in deploying, managing, and securing server infrastructures across various cloud platforms, ensuring high availability, performance, and security. Technical Expertise: Operating Systems: ✅...Hi, I am a Linux System Administrator with over 10 years of expertise in web hosting, and malware remediation. I specialize in deploying, managing, and securing server infrastructures across various cloud platforms, ensuring high availability, performance, and security. Technical Expertise: Operating Systems: ✅ Linux Distributions: Debian, Ubuntu, CentOS, RedHat, Fedora, AlmaLinux Cloud Platforms: ✅ AWS, Google Cloud, Azure, Alibaba Cloud, IBM Cloud, OVH, Linode, DigitalOcean, Vultr, Scaleway Web & Application Servers: ✅ Apache, Nginx, LiteSpeed, IIS Databases: ✅ MySQL, MariaDB, PostgreSQL, Amazon Aurora Mail Servers & Systems: ✅ Zimbra, Postfix, Dovecot, iRedMail, Sendmail ERP & CRM Solutions: ✅ Odoo, vTiger, Dolibarr, SugarCRM, SuiteCRM, YetiForce, ERPNext E-Learning & Video Conferencing: ✅ BigBlueButton (BBB), Greenlight, Jitsi Meet, Moodle LMS, Chamilo LMS, Open edX, Scalelite Control Panels & Hosting Management: ✅ cPanel/WHM, DirectAdmin, ISPConfig, Webmin/Virtualmin, CWP, Plesk, VestaCP, HestiaCP CMS & E-Commerce Platforms: ✅ WordPress, Joomla, Drupal, Magento, OpenCart, PrestaShop Development & Web Frameworks: ✅ PHP (Laravel, CodeIgniter, Zend) Cybersecurity & Compliance: ✅ Web Security: OWASP Top 10, Burp Suite, PCI DSS Compliance I am passionate about optimizing server performance, securing web environments, and delivering seamless hosting solutions tailored to business needs. Let's connect and discuss how I can contribute to your projects! Thanks & Regards, Sarath menos
Contratar sktricks
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About me I have worked over 20 years at IT and telecom companies at 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 OSI layer. With me is...About me I have worked over 20 years at IT and telecom companies at 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 OSI layer. With me is easy to setup systems. I am not picky about what systems to use but i do have experience what to use. I know following operating systems + distros: debian, ubuntu, gentoo, suse, redhat, centos, rocky linux, almalinux and arch linux, freebsd, netbsd, openbsd, sun solaris plus ms windows servers. I also know following systems: Web servers: Apache, Nginx, Lighttpd, Litespeed, Hiawatha. Javascript: nodejs,npm Java web servers: Tomcat, Jrun, Jboss Proxy systems: Haproxy, Varnish, Squid. DB servers: MySQL (and forks, including MariaDB), PostgreSQL Mail systems: Postfix,exim,dovecot.. and implementing: DKIM, SPF, MX, 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, lxc, jail, kubernetes Cloud providers: AWS, Digitalocean, Azure.. My knowledge does not stop here. I troubleshoot easily. Let's chat Please see my reviews of my previous works.. PS! With my bid you will get one week free support for work done menos
Contratar servermaster
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touhidecevw touhidecevw
$60 USD / hora
Network & System Specialist|CCNP|Fortinet|RHCE|CEHBangladesh✅As a highly skilled and experienced network and system administrator with over 11 years of expertise, I hold notable certifications such as CCNP, CCNA, RHCE, and Certified Ethical Hacker (CEH) . I have established myself as an accomplished network, system, and security engineer, capable of delivering complete...✅As a highly skilled and experienced network and system administrator with over 11 years of expertise, I hold notable certifications such as CCNP, CCNA, RHCE, and Certified Ethical Hacker (CEH) . I have established myself as an accomplished network, system, and security engineer, capable of delivering complete solutions for designing, configuring, automating, and managing network and system projects. My proficiency in using simulation software such as Packet Tracer and GNS3, as well as real-life network and system devices, make me a valuable asset for any project. My few hands-on experiences is : ✅Network Design by MS Visio, Cisco packet tracer, GNS3, and EVE-NG ✅Netacad CCNA and CCNP packet tracer Labs activities, projects design and solution ✅Cisco routers, switches, FTD, FMC, and ASA firewalls. ✅WatchGuard, Palo Alto, CheckPoint Firewall, SonicWall, Fortigate, pfSense, OPNsense, Huawei firewalls. ✅Unifi Enterprise Fortress Gateway, Ubiquiti UDM Pro, Unifi Cloudkey, USG UniFi Firewall , Security Gateway, Switch, and AP devices ✅ Netgear, Huawei, Aruba switch, DrayTek router, TP-Link and others vendor wireless router configurations. ✅Cisco, Tp-Link, Aruba, Fortinet, Ubiquiti, Planet, Huwei switch configurations. ✅MikroTik Routers and switch configuration ✅ SNMP monitoring configuration: Observium, Librenms, Cacti, Nagios core ✅ Cloud Administrator: Azure, AMAZON AWS , Google GCP, OVH Cloud and Digital Ocean, Contabo ✅Hyper-V, VMware ESXi, VMware Workstation, VirtualBox, KVM, and Proxmox. ✅Ubuntu, Red Hat, CentOS, Debian, openSUSE, and Kali Linux distributions. ✅Windows server administration , Active Directory management, Exchange Server administration, DNS configuration ✅Servers: HP Proliant Servers, Dell/EMC Servers, IBM ✅VLSM/subnetting of small to large enterprises ✅VLANs, Inter-VLAN routing, VTP, CDP, Ether-Channel(LACP, PAGP) ✅DHCP, NAT/PAT configuration and IP helper address ✅static and Dynamic Routing protocols (RIP, OSPF, EIGRP, BGP) configuration ✅Layer-3 Redudent/backup links Using HSRP, VRRP ✅Port security, ACL( access list) configuration ✅Network troubleshooting and optimization ✅VPN Configuration Expert (GRE , SSL, IPSEC, PPTP, OpenVPN & DMVPN) ✅Network automation script for any Cisco and FortiGate devices using python ✅Overlay Networks VPN Expertise: Proficient in configuring and managing various overlay network VPNs, including ZeroTier, Tailscale, WireGuard, SoftEther VPN, Netbird , Netmaker, OpenVPN Cloud, I, Twingate and PeerVPN for secure, scalable, and decentralized networking, enabling seamless remote access, team collaboration, and encrypted communications across distributed systems. ✅Cisco Duo: MFA, 2FA, SSO, Identity Security Integration, Windows Logon, RDP, Microsoft AD, VPN Authentication. menos
Contratar touhidecevw
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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 menos
Contratar iosifpeterfi
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I bring over 15 years of extensive experience in the fields of system administration and DevOps, making me a seasoned professional in managing and optimizing IT infrastructures. With a strong foundation in virtualization technologies, I excel in creating efficient and scalable virtualized environments. My expertise...I bring over 15 years of extensive experience in the fields of system administration and DevOps, making me a seasoned professional in managing and optimizing IT infrastructures. With a strong foundation in virtualization technologies, I excel in creating efficient and scalable virtualized environments. My expertise extends to a wide range of Linux systems, and I am well-versed in handling various distributions, ensuring their stability, security, and performance. I have a proven track record of successfully deploying web applications, guaranteeing smooth and reliable online experiences for users. One of my core strengths lies in managing system updates and applying security patches promptly, reducing vulnerabilities and minimizing downtime. My commitment to network security is unwavering, and I implement robust measures to protect data and maintain the integrity of systems. Furthermore, my proficiency in Cisco networking solutions allows me to design, configure, and troubleshoot complex network infrastructures, ensuring seamless connectivity and optimal performance. Additionally, I have a solid understanding of <b> HPE (Hewlett Packard Enterprise) </b>equipment, enabling me to efficiently manage and maintain these devices to meet organizational needs. With my extensive knowledge, practical experience, and dedication to staying updated with the latest industry trends, I am well-equipped to contribute significantly to any organization's IT operations, ensuring they run smoothly, securely, and efficiently. menos
Contratar rupa37
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kashifnadeem86 kashifnadeem86
$60 USD / hora
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. menos
Contratar kashifnadeem86
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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. menos
Contratar sabdsouza
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programmatis programmatis
$100 USD / hora
A Curated Approach to Digital TransformationUnited StatesWe don’t just build websites—we engineer digital assets designed to compound value, scale intelligently, and elevate market position. Our work is for leaders who value precision, refinement, and results—not shortcuts. From funded startups to established NASDAQ-listed enterprises, we help transform ideas into digital...We don’t just build websites—we engineer digital assets designed to compound value, scale intelligently, and elevate market position. Our work is for leaders who value precision, refinement, and results—not shortcuts. From funded startups to established NASDAQ-listed enterprises, we help transform ideas into digital assets that scale and endure. Core Services ● Fractional CTO Consulting – Clear, executive-level guidance on technology decisions and digital strategy. ● Custom Web Development & Architecture – Secure, scalable platforms built with accuracy and purpose. ● Organic Market Authority (SEO) – Data-driven strategies to capture high-value opportunities and establish authority. ● Ongoing Stewardship & Maintenance – Continuous oversight to keep digital assets secure, optimized, and competitive. Our Approach Every engagement begins with discovery: understanding your goals, your market, and the challenges ahead. We bring together precision engineering and strategic foresight to deliver solutions tailored to your business—intelligent, resilient, and built for lasting advantage. Why Programmatis Programmatis does not chase trends or mass-produce websites. We build assets—digital properties that compound value and attract opportunities. Our team works directly with you, providing clarity where others add noise, and delivering outcomes measured in growth and competitive edge. If your goal is to build more than a website—if you want a digital asset that creates lasting competitive advantage—we’re ready to make it real. menos
Contratar programmatis
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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 ** menos
Contratar AZTURK1
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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... menos
Contratar tangramua
