System Administrators For Hire
Showing 84 results
Sponsored Freelancers
-
Hire engkarimismail
engkarimismail engkarimismail
$50 USD / hour
✅Network|Voip|Cloud|Security|SysAdmin|DevOps|Mail✅MalaysiaNanoq LLC is a U.S.-registered software engineering and IT consulting company delivering web, mobile, cloud, AI, infrastructure, and cybersecurity solutions. We develop scalable web applications, mobile apps, SaaS platforms, APIs, admin systems, e-commerce solutions, booking platforms, and AI-powered applications...Nanoq LLC is a U.S.-registered software engineering and IT consulting company delivering web, mobile, cloud, AI, infrastructure, and cybersecurity solutions. We develop scalable web applications, mobile apps, SaaS platforms, APIs, admin systems, e-commerce solutions, booking platforms, and AI-powered applications using technologies including Flutter, Laravel, React, Node.js, Python, FastAPI, Vue.js, Firebase, MySQL, PostgreSQL, MongoDB, Docker, AWS, and Google Cloud. Our capabilities also include cloud architecture, DevOps, Linux and Windows infrastructure, networking, VoIP, cybersecurity, system migration, deployment, automation, and ongoing technical support. We focus on secure architecture, clean development, scalability, clear communication, and production-ready delivery. less -
Hire iosifpeterfi
CompTIA Security+ and Microsoft MCSE/MCSA/MCITP certified, with 15+ years of experience, 100+ delivered projects, and a 4.9 Freelancer rating across 101 reviews. I help businesses build, improve, and maintain software and infrastructure they can rely on. Clients usually come to me when they need someone who can take...CompTIA Security+ and Microsoft MCSE/MCSA/MCITP certified, with 15+ years of experience, 100+ delivered projects, and a 4.9 Freelancer rating across 101 reviews. I help businesses build, improve, and maintain software and infrastructure they can rely on. Clients usually come to me when they need someone who can take ownership—not just complete isolated technical tasks. I help launch new platforms, modernize existing systems, improve reliability and performance, automate operations, and solve problems that are slowing the business down. My focus is always the outcome: stable systems, smoother operations, less downtime, easier maintenance, and a setup that can grow with the business. I'm based in Germany and communicate fluently in English (C2), German (C1), and Romanian (native). I also operate my own hosting infrastructure, which can be useful for development, staging, testing, and deployment when a project needs it. You can expect clear communication, realistic commitments, and dependable follow-through. I'm also available after delivery for ongoing development, maintenance, monitoring, improvements, and long-term technical support. If you need someone experienced who can take responsibility for the technical side and stay involved long-term, I'd be glad to help. less -
Hire touhidecevw
touhidecevw touhidecevw
$60 USD / hour
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. less -
Hire rupa37
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. less -
Hire andrewkor27
I’m a Python Automation Developer specializing in AI solutions, API integrations, web scraping, bots, custom automation and desktop applications. I help businesses eliminate repetitive manual work, connect different platforms, collect and process data, and build reliable Python tools that save time and reduce...I’m a Python Automation Developer specializing in AI solutions, API integrations, web scraping, bots, custom automation and desktop applications. I help businesses eliminate repetitive manual work, connect different platforms, collect and process data, and build reliable Python tools that save time and reduce errors. 🔹 What I can help you with: • Python scripts and custom automation • AI and OpenAI API integrations • REST API development and third-party API integration • Web scraping and data extraction • Browser automation with Selenium / Playwright • PyQt, PySide, Tkinter and CustomTkinter Desktop Applications • Telegram and Discord bots • Excel, CSV, JSON and database automation • FastAPI, Flask and Django backend development • Data processing and transformation • Scheduled tasks and workflow automation • Existing Python script debugging and improvement • AI-powered chatbots and business tools I have 10+ years of software development experience and have worked with backend systems, APIs, databases, cloud services, automation, and AI/ML technologies. My approach is simple: understand exactly what you need, build a clean and reliable solution, test it properly, and provide code that is easy to maintain. Whether you need a small Python script, an API integration, a scraping tool, an AI-powered application, or a complete automation workflow, I’m ready to help. Send me your requirements and I’ll suggest the simplest and most practical way to build it. less -
Hire samnangy4
I’m a multidisciplinary Software Engineer and Digital Solutions Specialist focused on Web, Mobile, AI, Data, Automation, Design, and Digital Media. I help businesses and individuals turn ideas into practical, polished digital products—from websites and mobile apps to AI solutions, dashboards, automation workflows,...I’m a multidisciplinary Software Engineer and Digital Solutions Specialist focused on Web, Mobile, AI, Data, Automation, Design, and Digital Media. I help businesses and individuals turn ideas into practical, polished digital products—from websites and mobile apps to AI solutions, dashboards, automation workflows, visual content, and modern user experiences. My technical experience includes Python, FastAPI, React.js, Next.js, Node.js, TypeScript, Flutter, PostgreSQL, REST APIs, Docker, Excel automation, databases, and modern deployment workflows. I can help with: • Full-stack web development • Mobile app development • SaaS and business applications • AI integrations and automation • API development and third-party integrations • Admin panels and dashboards • Data cleaning, Excel automation, reporting, and visualization • Database design and management • WordPress and e-commerce • UI/UX and responsive interface improvements • Graphic and digital design • Video editing and multimedia content • Testing, debugging, optimization, and existing-project fixes I focus on clean implementation, attention to detail, clear communication, and maintainable solutions. Whether the project is technical, creative, or combines both, I adapt my workflow to the specific requirements. If you have a web, mobile, AI, automation, data, design, or digital-media project, send me the details and I’ll help you determine the right approach. less -
Hire dwinurhadi
I have been working with network devices and system admin for the past few years and have great experience with them. I am ready to be hired and start working on your projects today. ~regards | Cisco Expert Routing Switching | | VMware Expert | Juniper Router | HCNA Huawei | | Fortinet NSE1 NSE2 NSE3 | | PFSense...I have been working with network devices and system admin for the past few years and have great experience with them. I am ready to be hired and start working on your projects today. ~regards | Cisco Expert Routing Switching | | VMware Expert | Juniper Router | HCNA Huawei | | Fortinet NSE1 NSE2 NSE3 | | PFSense Advanced | FreeBSD Advanced | Mikrotik MTCNA MTCWE | Palo Alto Expert | | Docker | Docker Compose | Nomad | Kubernetes | Ansible Expert | Terraform | Scripting Automation | WebServer Nginx and Apache Expert | | MySQL Tune High Performance | Indexing | Tune Up | | Github Action | Gitlab Pipelines Expert less -
Hire amiteshojha
Certified Server & Cloud Architect with 15+ years of strong hands-on experience in designing, managing and optimizing IT infrastructure across multi-cloud environments. Expert in AWS, Oracle Cloud (OCI), Azure, Google Cloud, DigitalOcean along with Linux, UNIX, Windows, VMware and OpenStack. Strong experience in...Certified Server & Cloud Architect with 15+ years of strong hands-on experience in designing, managing and optimizing IT infrastructure across multi-cloud environments. Expert in AWS, Oracle Cloud (OCI), Azure, Google Cloud, DigitalOcean along with Linux, UNIX, Windows, VMware and OpenStack. Strong experience in Oracle Apps, databases and enterprise IT services. Certified AWS Cloud Architect Professional and Generative AI certified for AWS and Oracle Cloud (OCI), with hands-on experience in AI model deployment, cloud-based AI infrastructure, automation using AI tools and integrating AI services with cloud platforms. Strong experience in application development and production-ready deployments including eCommerce platforms (Magento, WooCommerce, Shopify etc), WordPress, PHP-based applications and custom web solutions. Specialized in end-to-end setup from development to production, including CI/CD pipelines, scaling, security hardening and high availability architecture. Expert in Cloudflare setup, CDN configuration, WAF implementation, firewall security and protection against DDoS and web attacks. Strong experience in production-grade email server setup and deliverability including DKIM, DMARC, SPF, RBL, spam filtering and secure mail flow configuration. Expert in cloud architecture, setup, configuration and high-level infrastructure design for scalable and secure environments. Strong expertise in IT cost optimization, improving performance, reducing cloud billing and ensuring best utilization of resources. Expert in troubleshooting live production issues, server failures and cloud problems with proper RCA and quick resolution. Extensive experience in migrations including servers (Linux/Unix/Windows), websites, applications, databases (Oracle, MySQL, PostgreSQL, MongoDB) and mail systems like Zimbra, Exchange, Office 365, cPanel, Plesk and more. Experienced in network security, firewall setup, vulnerability assessment and securing infrastructure against cyber threats. Hands-on experience with DevOps tools like Jenkins, Terraform, Ansible, Prometheus and Grafana for automation and monitoring. Strong experience with hosting panels like cPanel/WHM, Plesk, DirectAdmin, ISPConfig, Webmin, Virtualmin and others. Worked on monitoring and management tools like Nagios, Cacti, Zenoss and other enterprise solutions. Certified RHCE, RHCSA, RHCVA, OpenStack, Oracle Cloud (OCI) Professional and Mirantis Cloud certified. Expert in Active Directory, Microsoft Exchange and Windows server environment setup, migration and management. I believe in delivering reliable, scalable and production-ready solutions with strong security and proactive support. AS AN ENGINEER, I BELIEVE NOTHING IS IMPOSSIBLE TO IMPLEMENT. In addition to this, I look forward to working on your projects in your budget. less -
Hire emilesd617
Hello, I can start immediately and can dedicate to your project full-time, 40+ hrs/week during your working time. I've 8+ years of experiences and specialized in C#, VB, .Net, Devexpress, JavaScript, Node.js, React, Next.js, Mobx, GraphQL, Neo4j, Tailwind CSS, SCSS, GPT, TypeScript, API integration, etc. I'm an...Hello, I can start immediately and can dedicate to your project full-time, 40+ hrs/week during your working time. I've 8+ years of experiences and specialized in C#, VB, .Net, Devexpress, JavaScript, Node.js, React, Next.js, Mobx, GraphQL, Neo4j, Tailwind CSS, SCSS, GPT, TypeScript, API integration, etc. I'm an excellent English speaker/communicator with good collaboration experience. Looking forward to discussing more details. Best regards. Emile. less -
Hire turkia18
am an Operations, Business Development, and IT professional with hands-on experience in SAP Business One, SQL, Windows Server, data analysis, and business operations. I help businesses improve operations, develop workflows, solve technical problems, analyze data, and build practical solutions that improve efficiency...am an Operations, Business Development, and IT professional with hands-on experience in SAP Business One, SQL, Windows Server, data analysis, and business operations. I help businesses improve operations, develop workflows, solve technical problems, analyze data, and build practical solutions that improve efficiency and business performance. My experience includes SAP Business One reporting and SQL queries, business development and process improvement, Microsoft SQL Server, Windows and Windows Server troubleshooting, system and network administration, remote support, data analysis, financial and operational reporting, supplier and bank reconciliation, inventory, purchasing, and POS-related workflows. I focus on understanding the business problem, identifying the root cause, and delivering practical, accurate, and reliable solutions. I am available for SAP Business One, SQL, business development, process improvement, Windows/IT support, data analysis, reporting, and operational improvement projects. less
