System Administration is a skilled job that requires expertise and reliability. A System Administrator takes care of the operations, maintenance and enforcement of a computer/information systems network, server and applications for clients. Improving performance, security and stability of the system are integral parts of their job. They also have to handle software upgrades or the installation of new hardware, and will provide guidance, technical support, and training to users.

For most organizations, be it large companies or small businesses, System Administration is absolutely essential in keeping their day-to-day operations running smoothly. This is because they need someone with the technical expertise to manage, maintain and keep their computer networks functioning properly.

Here’s some projects that our expert System Administrator made real:

  • Network setup
  • Security configuration & monitoring
  • Vulnerability & security audit
  • Server installation & maintenance
  • Troubleshooting & error rectification
  • Software upgrade & installation
  • Database backup & restoration
  • Performance optimization

In today’s digitally driven world, it is no surprise why System Administrators are in such demand. They are a reliable resource for organizations who want professionals who can handle operations both smoothly and efficiently. Companies now have no choice but to set aside a budget for hiring System Administrators – even if it means going digital and finding one on Freelancer.com.

At Freelancer.com, we understand how important it is for you to have qualified professionals working on your projects. We also understand that you may not always have the capacity or budget to hire one full time – this is why you should consider looking intoFreelancer.com where you can find quality System Administrators with different levels of experience in your area at an affordable price. Whether its a short term or long term project, our System Administrators will be up for the task anytime!

Now that you know how important it is to have an expert System Administrator working on your business’s IT systems, we invite you to post your own project on Freelancer.com and hire an experienced professional today!

148,049レビューから、クライアントは System Administrators 4.9/5個の星で評価します。
System Administrators を採用する

System Administration is a skilled job that requires expertise and reliability. A System Administrator takes care of the operations, maintenance and enforcement of a computer/information systems network, server and applications for clients. Improving performance, security and stability of the system are integral parts of their job. They also have to handle software upgrades or the installation of new hardware, and will provide guidance, technical support, and training to users.

For most organizations, be it large companies or small businesses, System Administration is absolutely essential in keeping their day-to-day operations running smoothly. This is because they need someone with the technical expertise to manage, maintain and keep their computer networks functioning properly.

Here’s some projects that our expert System Administrator made real:

  • Network setup
  • Security configuration & monitoring
  • Vulnerability & security audit
  • Server installation & maintenance
  • Troubleshooting & error rectification
  • Software upgrade & installation
  • Database backup & restoration
  • Performance optimization

In today’s digitally driven world, it is no surprise why System Administrators are in such demand. They are a reliable resource for organizations who want professionals who can handle operations both smoothly and efficiently. Companies now have no choice but to set aside a budget for hiring System Administrators – even if it means going digital and finding one on Freelancer.com.

At Freelancer.com, we understand how important it is for you to have qualified professionals working on your projects. We also understand that you may not always have the capacity or budget to hire one full time – this is why you should consider looking intoFreelancer.com where you can find quality System Administrators with different levels of experience in your area at an affordable price. Whether its a short term or long term project, our System Administrators will be up for the task anytime!

Now that you know how important it is to have an expert System Administrator working on your business’s IT systems, we invite you to post your own project on Freelancer.com and hire an experienced professional today!

148,049レビューから、クライアントは System Administrators 4.9/5個の星で評価します。
System Administrators を採用する

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    20 見つかった仕事

    We are looking for a Robotics Technical Support Specialist to support a space robotics project from November 2026 through December 2027. This is a full-time contract role, Monday-Friday, 9:00 AM-5:00 PM Central Time. The ideal candidate has a strong software background and experience troubleshooting robotics or technical software environments, particularly Linux/Ubuntu, Docker, and ideally ROS 2. Responsibilities: Troubleshoot software, Linux/Ubuntu environments, and containerized workflows. Diagnose issues, identify root causes, and provide practical technical solutions. Support Docker and Docker Compose workflows. Troubleshoot system, driver, configuration, and integration issues. Work closely with robotics engineers and document solutions as needed. Requirements: Master’s...

    $108750 Average bid
    地方 特集
    $108750 平均入札額
    8 入札

    I need an experienced desktop support engineer who can jump in and keep our Windows workstations running smoothly. Most of the calls for help will involve installing or repairing software—chiefly Microsoft Office and our chosen antivirus package—and fixing those stubborn moments when the machine drops off the network. You’ll connect to the user’s PC, diagnose the cause, resolve it, and then leave a brief record of what was done so the issue doesn’t resurface. Key deliverables: • Correct installation or repair of requested applications • Restored network connectivity with root-cause identified • Short, clear post-session summary for my records Comfort with Windows 10/11 administration tools, registry edits, Group Policy, and solid TCP/...

    $9 / hr Average bid
    $9 / hr 平均入札額
    3 入札
    AWS to BinaryLane Migration
    5 日 left
    認証済み

    I have two SaaS sites running on AWS (EC2 + RDS + S3) that I now want moved to BinaryLane () . Both stacks are fairly standard—no exotic networking or custom AMIs—so this should mainly be a clean lift-and-shift and a bit of re-wiring. Scope of work • Spin up equivalent BinaryLane instances, copy the codebases, databases, SSL certificates and cron jobs, and confirm the apps are fully functional on their new hosts. • Point the DNS once we’ve run smoke tests and I give the green light. • Leave all image and document storage on AWS S3; update the apps so they continue to read/write to the same buckets without any broken links. • Recommend and integrate a cost-effective transactional email solution (Amazon SES, SendGrid, Mailgun—whichever you feel gi...

    $318 Average bid
    $318 平均入札額
    200 入札

    I need help fixing a software problem on my Windows computer. The issue is with the operating system. Ideal Skills and Experience: - Expertise in troubleshooting Windows operating system issues - Experience with system recovery, repair, or reinstalling Windows - Knowledge of handling software conflicts and system errors Please provide a detailed plan and estimated time for completion.

    $399 Average bid
    $399 平均入札額
    99 入札
    Suse Linux Database Server Fix
    4 日 left
    認証済み

    I'm looking for an expert to troubleshoot issues with my Suse Linux database server. The server doesn’t run properly and needs immediate attention. Key Requirements: - Diagnose and fix performance issues - Ensure server stability and reliability Ideal Skills and Experience: - Proficient in Suse Linux - Strong background in database server management - Experience in troubleshooting system performance issues

    $132 Average bid
    $132 平均入札額
    79 入札

    Looking for freelance IT support projects involving desktop and laptop troubleshooting, Windows installation and configuration, Microsoft 365 support, Active Directory user management, software installation, system troubleshooting, and remote technical support. Available for short-term projects and ongoing remote IT support.

    $4 / hr Average bid
    $4 / hr 平均入札額
    22 入札

    Ich plane, einen neuen Windows Server 2022 VPS aufzusetzen und den Remote Desktop Services (RDS)-Zugriff einzurichten. Ziel ist es, bis zu zehn Mitarbeitenden einen stabilen, sicheren Zugang zu ihrer Arbeitsumgebung bereitzustellen, damit sie von unterwegs auf unsere firmeneigenen, maßgeschneiderten Business-Anwendungen zugreifen können. Was ich konkret benötige • Installation und Grundkonfiguration von Windows Server 2022 auf dem vorhandenen VPS • Aktivierung und Lizenzierung der Remote Desktop Services • Anlegen der Benutzerkonten (1–10) und Zuweisung der passenden Berechtigungen • Einrichtung unserer individuellen Business-Software innerhalb der RDS-Sitzungen • Sicherheits-Hardening (Gruppenrichtlinien, Firewall-Regeln, MFA-Optione...

    $23 / hr Average bid
    $23 / hr 平均入札額
    20 入札

    I am rolling out a new IP-based CCTV network that must protect both indoor and outdoor areas of our facility. The job begins with a full site survey—virtual walk-throughs and existing floor plans are available—to map optimal camera positions, cabling routes, and NVR locations. Because the entire backbone will run on Ethernet, you will need to size and specify PoE switches, storage capacity, and any wireless bridges needed for hard-to-reach exterior zones. Once the bill of materials is approved, I expect you to handle or oversee physical installation, perform all network configuration (subnetting, VLANs, port-forwarding for secure remote viewing), and fine-tune the VMS so live and archived footage streams smoothly from every camera. Acceptance criteria • Complete cove...

    $159 Average bid
    $159 平均入札額
    18 入札

    I am moving our production DNS from a Windows-based server to a fresh Debian instance running Bind9. The new host needs to be fully authoritative for all current zones, so I will rely on you to extract every record from the Windows server, import them into Bind-compatible zone files, and validate that the answers match bit-for-bit before cut-over. Once the zones are in place, I also want DNSSEC enabled with a properly generated Key Signing Key (KSK) and Zone Signing Key (ZSK) for each zone. Please configure automatic key rollover and publish the DS records I will provide to my registrar. The goal is a seamless switchover with zero client disruption and clean validation on tools like dig +dnssec, dnsviz, and Verisign’s DNSSEC debugger. Deliverables • Debian 12 server with Bind9...

    $134 Average bid
    $134 平均入札額
    51 入札

    I have a concise trial assignment that will let me confirm your KiCad skills before moving into steady collaboration. Please install my “Rounder for Tracks v3.2” plugin, run it on a PCB containing angled traces, and confirm the tool rounds each track properly. Work through the various plugin settings so I can see how thoroughly you explore its behaviour. Deliverables I expect: • A brief report outlining the steps you followed, the settings you tried, and whether the results matched your expectations. • Clear, high-resolution screenshots showing the board before and after each test case. • Honest, actionable feedback on usability issues, bugs, or enhancement ideas. Solid KiCad experience and a practical grasp of PCB layout are essential, along with clear com...

    $416 Average bid
    $416 平均入札額
    19 入札

    Sorry, I had to create a new project because the content has changed so much. We have a freshly configured root server with a fresh installation of BigBlueButton on it. An unsuccessful initial migration from Rocket LMS is now to be carried out on this server and, where necessary, fully configured (logo, colour schemes, payment system, etc.). The installed BigBlueButton on the root server also have to be configured to be intergrated completely with the LMS. Once everything is running smoothly, SuiteCRM should be installed and hold a short session to guide our staff through the new environment: how to launch BBB rooms, update branding assets and ensure that future updates will not overwrite the customised work. In general, the following tasks need to be carried out: • Migration fro...

    $166 Average bid
    $166 平均入札額
    254 入札

    I am rolling out FortiNAC across a 40-user environment and need an experienced hand to configure it so we immediately raise our security posture. The main objective is crystal clear: enhance overall network security. Here is what I need achieved: • Build and refine access-control policies that automatically grant or deny connectivity based on user role and device posture. • Segment the network so that computers and laptops, mobile devices, and a growing mix of IoT equipment each sit in the right security zone with least-privilege access. • Complete the full FortiNAC setup: appliance or VM provisioning, switch/WLAN integration, 802.1X configuration, guest onboarding, and testing of enforcement actions. • Provide concise documentation and a quick-reference guide...

    $461 Average bid
    $461 平均入札額
    23 入札
    Cisco ASA Cleanup & Tuning
    2 日 left
    認証済み

    Cisco ASA working through ASDM to tidy up and optimize my current firewall pair. The firewalls are already in active-standby high-availability mode, and we use SSL VPN for remote access. Here is what I want done: • Audit existing Access Rule, NAT rule and Service-Policy, rename them, group them logically, and delete anything that is redundant or obsolete. Environment SSL VPN to connect to LAN (working) Internal servers accessible from out for website (2)-working CCTV to be accessible from outside-working Cloud subnet accessible from LAN and VPN subnets for RDP (not working) Confirm two ASA in HA mode (active-standby) Recommend any improvements This is production ASA, so credentials cannot be shared, need to work via shared screen

    $44 Average bid
    $44 平均入札額
    16 入札
    Update My Linux Server
    1 日 left
    認証済み

    I'm seeking an experienced Linux system administrator to update my Linux server to the latest version. Requirements: - Update the Linux operating system and any necessary software or services Ideal Skills and Experience: - Proficient in Linux server management - Experience with system updates and maintenance - No downtime is required, as there are no critical applications running

    $287 Average bid
    $287 平均入札額
    181 入札

    Our production systems run on a dedicated PostgreSQL database server that needs ongoing, professional management to keep performance high and downtime at zero. I need an experienced PostgreSQL administrator to take charge of routine upkeep, monitoring, and rapid incident response so the team can stay focused on product development. Scope of work You’ll handle version updates, configure and verify automated backups, watch key metrics, fine-tune queries and indexes when bottlenecks appear, and strengthen security by keeping roles, permissions, and network rules tight. The server is Linux-based and accessed via SSH; fluency with psql, pgAdmin, and common monitoring stacks (Prometheus, Grafana, or similar) will make the job straightforward. Deliverables • Initial health audit ...

    $109 Average bid
    $109 平均入札額
    174 入札
    Secure Omada VPS Deployment
    1 日 left
    認証済み

    I am ready to launch a fresh Ubuntu-based VPS that will host the TP-Link Omada Cloud SDN Controller, and I want the environment to be production-ready from day one. Your task is to install the latest Omada software, tune the underlying Ubuntu system, and lock everything down with an intermediate security posture: firewall rules, automated updates, and a proven intrusion-prevention layer (e.g., Fail2Ban or similar). Once the controller is up, I will also need a concise document that shows: • every step you took during installation and hardening, • all credentials or certificates generated, • and a clear, vendor-agnostic backup strategy (where to store the archives, how often to run them, and the exact commands or scripts). Feel free to recommend S3, rsync to anoth...

    $202 Average bid
    $202 平均入札額
    93 入札

    My home network has been compromised. I need an expert to: - Diagnose security breaches - Identify and remove unauthorized devices - Secure my Wi-Fi and connected devices - Provide guidance on protecting myself from future attacks Ideal Skills & Experience: - Strong background in cybersecurity - Experience with home network security - Ability to explain technical concepts clearly - Trustworthiness and professionalism Please help me regain control of my digital life. I do suspect that the individual may have used something like apple buisness or cisco technologies to gain complete access and control over everything I do on a daily basis. Including revoking my access to my own information. I need someone who can look beyond the curtain and really understand that it is not just the dev...

    $432 Average bid
    $432 平均入札額
    34 入札
    NordVPN Setup on Asus RT-BE88U
    19 時間 left
    認証済み

    I need my Asus RT-BE88U running smoothly with NordVPN so every computer and streaming device in the house automatically tunnels through the VPN and lets us bypass geo-restrictions without killing speed or breaking normal web use. Here’s what I’m after: • Load the correct NordVPN OpenVPN or WireGuard configuration files on the router, including any manual DNS settings needed to stop leaks. • Make sure only the computers and streaming boxes go through the VPN while other gadgets (phones, IoT, printers) can stay on the regular WAN if that keeps things faster. • Verify that Netflix, BBC iPlayer, Hulu and similar region-locked services open as if we’re in the chosen country. • Provide a quick screen-share walk-through so I can tweak or add servers la...

    $22 Average bid
    $22 平均入札額
    14 入札

    I need an experienced Ubiquiti engineer to set up and configure Unifi Access Points on the ceiling. Key tasks include: - Initial setup and configuration of Unifi Access Points - Designing optimal placement and connectivity - Access control Ideal skills and experience: - Expertise in Ubiquiti products, especially Unifi - Strong networking knowledge - Experience with ceiling-mounted installations Looking for someone who can ensure a robust and reliable network setup. Please provide relevant experience in your bids.

    $19 / hr Average bid
    $19 / hr 平均入札額
    20 入札
    Mailcow Server Setup Coaching
    5 時間 left
    認証済み

    I have a fresh Ubuntu server with full root SSH access and a registered domain that still needs its DNS records. I want to install Mailcow-dockerized from scratch and would like you to guide me step-by-step in real time—screen sharing while I run each command myself. Together we will: • Deploy and update the Mailcow stack on Ubuntu. • Create and publish all required DNS records (A, MX, SPF, DKIM, DMARC, PTR) for the domain. • Secure the installation with Let’s Encrypt certificates. • Verify outbound and inbound mail flow, ensuring messages reach major providers’ inboxes without spam flags. • Leave clear notes so I can maintain the server and add future domains or users on my own. We’ll consider the job complete when webmail ...

    $10 / hr Average bid
    $10 / hr 平均入札額
    57 入札

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