System Admin Jobs

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!

From 157,920 reviews, clients rate our System Administrators 4.87 out of 5 stars.
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    87 jobs found, pricing in USD

    I am a parent with four children. To better manage their daily time and schedules, especially their use of the internet, I am seeking a network engineer or developer to create a network management tool based on OpenWrt for me. For cost-effectiveness, I would like to know whether this tool can be implemented based on second-hand Linksys or Asus brand routers, or using Raspberry Pi, or if it is necessary to use an industrial computer to deploy this tool. The main functionalities of the tool are as follows: Creation of four separate Wi-Fi accounts, each requiring authentication upon connecting to the network. Parents can set a daily internet usage duration for each account. The default setting is 1 hour per day, but parents can adjust it. When an account reaches the daily internet usage limi...

    $491 (Avg Bid)
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    6 bids

    I am looking for a skilled developer who can help me solve an issue with dynamic subdomains on my VPS/Dedicated Server. Currently, the dynamic subdomains are not working and I am seeking someone who has experience with Node.js to help me resolve this issue. Server Environment: VPS/Dedicated Server Domain Name and Hosting Provider: Known Error Messages/Logs: Not available Ideal Skills and Experience: - Strong experience with Node.js - Familiarity with VPS/Dedicated Server environments - Ability to troubleshoot and solve technical issues quickly and efficiently.

    $26 (Avg Bid)
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    9 bids
    Install script on UBUNTU 22 6 days left
    VERIFIED

    The goal of this project is to install the script ,the script must be well installed with cronjob, SSL certificate , email ( I already have an account on name cheap), FFMEPG, After installation I'll do several tests.

    $29 (Avg Bid)
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    10 bids

    I am looking for a Freelancer to transfer my existing Let's Encrypt certificates from Apache on my Typo3 web server to HAProxy running on OPNSense for several domains. I already have the certificates and keys ready, so no generation is required. I am looking for someone with knowledge of both Apache and HAProxy to help me get this completed. Thank you for your interest in this project. Domains: , , , , , , , , , , , ,

    $521 (Avg Bid)
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    31 bids

    The deliverables will be to develop a Casual loop diagram along with a System map. Must be accessible using Microsoft software such as Word or PowerPoint. Must be available for multiple virtual meetings, through these meetings the information will be pulled to develop the system map and casual loop diagram to support in guiding through the transition Must be available from the week of June 19 to the last of September, bi weekly virtual meetings. Good presentation skills and experience and able to provide examples of your work is important

    $661 (Avg Bid)
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    9 bids

    We're hoping to upgrade our AWS instance from: - windows server 2012 r2 to windows server 2022 - to Not sure if this can be done in place. Is this something you can help us with?

    $339 (Avg Bid)
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    28 bids

    Hi All, I have purchased a new Server with OVH but the port is closed and SMTP mails are not accepting through the server. The IP is not blocked at their end. We need someone that can open the port for sending and receiving emails.

    $32 (Avg Bid)
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    10 bids

    HI, i need help of a freelancer to help me install OS online. the desired candidate must be available online to help me thank you,

    $7 / hr (Avg Bid)
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    12 bids
    ViciDial Config 6 days left
    VERIFIED

    I just installed Vici Dial on a Server, I have also Magnus Billing on an another Server which means I want now to make auto dailer so I fixed Vici Dial but I have never heard about this before so now need someone who can help me just to open users or what ever is needed to configure it.

    $57 (Avg Bid)
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    5 bids
    Flask API Server Issue 6 days left
    VERIFIED

    1. The issue is that when the client sends a post request to the API, it takes up to a few seconds for a response however the function itself executes in less than a second (issue occurs often when API is on idle and hasn't received a signal for a while) 2. Its ubuntu 18.04 running on wsgi as a system service on a lightsail server

    $116 (Avg Bid)
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    33 bids

    I want to create a linux server on google cloud with some security patches. install mysql install elasticsearch install bitcoin core install apache

    $11 / hr (Avg Bid)
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    23 bids

    I am looking for a freelancer who can help me set up a Ubiquiti server in my office with site-to-site VPN. Here's what you need to know: Network Setup: - We currently have 3 different branches in 3 cities. Our accounting software is based locally in City D, and we have satellite offices in City S & City A that need to be connected to City D Ubiquiti Products: - I am considering to purchase the unifi dream machine pro for all 3 locations. But am open to suggestions if you have a better idea. Purpose of Site-to-Site VPN: - The primary purpose of the site-to-site VPN is to connect remote offices. Ideal Skills and Experience: - Experience with Ubiquiti products and setting up site-to-site VPNs. - Knowledge of network configurations. Scope of work - I will set up the hardware at ...

    $237 (Avg Bid)
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    25 bids

    Seeking a skilled developer to configure multiple socks5 connections on an ASUS RT-AC68U router. The goal is to connect socks5 to separate Wi-Fi networks and enable broadcasting. Specific devices include Raspberry 4, ASUS RT-AC68U, ASUS GT-AX11000, GL-AXT1800 (Slate AX), and GL-AX1800 (Flint). Each socks5 should have its DNS set accordingly, and WEBRTC should reflect the IP of the socks5. The project must be completed before 4 june. Please provide a suitable price and address additional queries.

    $227 (Avg Bid)
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    4 bids
    postfix expert -- 3 5 days left
    VERIFIED

    I am currently utilizing two mail servers simultaneously. How can I configure the system to ensure that if the first mail server fails to find a valid mailbox or user associated with the recipient address, the email is automatically redirected to the second mail server? First server: postfix mailserver: Second server: Microsoft Office 365: I get this error when the user is not found in the mail server "Address not found Your message wasn't delivered because the address couldn't be found, or is unable to receive mail." To fix this, I used the transport file but it's not working correctly 1. I created a transport file for the following: [alex@] smtp:[] smtp: 2. I configured postfix to enable this transport file transport_maps = regexp:/etc/postfix/transport

    $27 (Avg Bid)
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    4 bids

    I'm looking for professionals with experience in nginx and HAProxy both installed on OPNSense. Please bid the project only if you have experience with these technologies installed on OPNSense (not linux) They are both already installed and working perfectly. The task is to establish a secure connection between them.

    $40 (Avg Bid)
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    2 bids
    Help config IIS WebDav 5 days left
    VERIFIED

    I need condig IIS in a windows server for WebDav. I need that you do it by TeamViewer or AnyDesk for I see how you do it. thanks you !

    $27 (Avg Bid)
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    8 bids

    Bioinformatics commands in mobaxterm app

    $144 (Avg Bid)
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    13 bids

    I need a freelancer to install software from on my dedicated Ubuntu Linux server. The successful freelancer should have experience in Linux server administration and be able to make the software work as soon as possible.

    $57 (Avg Bid)
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    17 bids

    ISE 3.2 configuration support for some task like policy profile for users, guest portal and BYOD configuration

    $94 (Avg Bid)
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    3 bids

    I am seeking the assistance of an AWS expert who can remotely assist me, preferably through a session using AnyDesk. Specifically, I require guidance in tuning the AWS load balancer to effectively manage load balancing and failover for a .NET Core application. Here are the specific requirements for the session: Receive guidance and documentation on seamlessly taking nodes out of the cluster without any impact or outage for users. Implement a swift failover mechanism in the event of a node outage, ensuring uninterrupted service for users. If you possess expertise in AWS and are experienced in configuring load balancers and managing failover scenarios, I would greatly appreciate your support. Please let me know your availability and preferred mode of communication for the remote session.

    $178 (Avg Bid)
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    16 bids

    I am in need of a Mikrotik router specialist who can assist me in adding a VPN to my WiFi network. I have a router (rb941) . I have already purchased a VPN service and my primary goal is to bypass geo-restrictions. Ideal Skills and Experience: - Experience with Mikrotik router configuration and setup - Knowledge of VPN setup and configuration - Familiarity with bypassing geo-restrictions - Excellent communication skills to explain the setup process in a clear and concise manner.

    $123 (Avg Bid)
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    20 bids

    Hi, I am looking for a WHM/Cpanel expert that can write a script (bash, API, ...) that will automate updating a wildcard SSL certificate on all subdomains. Situation: - I have a WHM/Cpanel server (WHM 110, Apache 2.4, AlmaLinux v8.8.0 or Centos 7.9) with root access - on the server, I have one website, - that website has 1000+ subdomains, such as , , , ... - the website and all the subdomains have a Wildcard SSL certificate installed for *. Problem: - I need to update the wildcard SSL certificate. Each subdomain needs to be updated manually, one-by-one, from the WHM user interface Solution: - I need a way to update the wildcard certificate for all the subdomains automatically so I don't have to do it manually Desired functionality: - I provide the old and new SSL certificate and...

    $78 (Avg Bid)
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    13 bids

    I am in need of a freelancer to install a DrayTek Vigor 2865AC Firewall for network security. I have no experience setting up firewalls, so I am looking for someone with expertise in this area. The installation will cover less than 10 devices, so it is a relatively small project. Ideal skills and experience for the job include: - Expertise in setting up firewalls - Knowledge of DrayTek Vigor 2865AC Firewall - Familiarity with network security protocols and best practices - Ability to troubleshoot and resolve any issues that may arise during installation

    $520 (Avg Bid)
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    17 bids

    network engineer ,router,switch,firewall,

    $33 / hr (Avg Bid)
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    41 bids
    Stackpath DNS 5 days left
    VERIFIED

    Create and configure a DNS on Stakpath for a new domain

    $26 (Avg Bid)
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    16 bids

    We are looking for a Perdoo OKR Consultant to help implement and guide our organisation's OKR program. Our current state is that the program is not implemented yet, however we do have specific goals in mind. Our team will need guidance and training from the consultant in order to ensure the successful implementation of our OKR program. As such, we need a consultant with the knowledge, expertise, and experience to work with us to ensure that our program is successful. The consultant would need to provide full consultation on the OKR process and provide guidance in all aspects of managing the program. This would include conducting strategy and goal setting sessions, offering advice and recommendations on best practices, delivering communication and training, tracking progress, coachin...

    $57 / hr (Avg Bid)
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    6 bids
    JasperReports Server scaling 5 days left
    VERIFIED

    As our business relies heavily on the JasperReports Server for reporting purposes, we need a freelancer to assist us in scaling the system in order to improve its performance. At the current usage level, medium, we require help specifically with load balancing to make sure that traffic and load times are at their optimal level. The main goal of scaling our JasperReports Server is to improve the performance, such that it is able to handle increased traffic without causing an inconvenience to our customers. We're looking for someone capable of understanding our current setup, working out what needs to be done to reach our goal, and actually implementing these changes to achieving successful scaling.

    $562 (Avg Bid)
    NDA
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    4 bids

    I am looking for a freelancer who can help me access shared files on a cloud-based storage via VPN from Windows computers. The goal is to update the files live via the internet. I am not sure about the VPN setup required, so I need recommendations. The ideal freelancer should have experience in VPN setup and be able to suggest the best one based on my needs. The following skills are required for this project: - VPN setup - Cloud-based storage - Windows OS If you have experience in this area and can provide quality work, please bid on this project.

    $113 (Avg Bid)
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    17 bids

    I am looking for a freelancer to help me with a simple task i need to redirect visitors to a new VPS without any downtime. can be done using host file or ip tables, i am not sure which one is better if bidder is experienced, we will continue on configuration of server

    $34 (Avg Bid)
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    21 bids

    I am looking for an experienced Splunk expert to help me set up a system for saving and monitoring network logs. The ideal candidate should be familiar with the following: - Splunk Enterprise - Network Security Monitoring - TCP/IP Protocols - Basic System Administration The project involves setting up a system to monitor more than 50 hosts/network devices, with both real-time monitoring and periodic analysis required. The system should be able to gather and analyze log data from various sources, including routers, switches, and servers. The primary tasks of the project include: - Setting up Splunk Enterprise on a server - Configuring data inputs for network logs - Creating dashboards and reports for real-time monitoring and periodic analysis - Setting up alerts and notifications for sp...

    $170 (Avg Bid)
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    13 bids
    VMWARE RESTORE 4 days left

    VM Started with an error, and reading online I deleted the snapshot files from snapshot manager, but now wm says it dosent find the vmdk file, I see all the vmdk files but as SEPARSE and FLAT extensions. they are all in the same datastore as they were, according to online reading I only need to rename, to have them boot again.

    $177 (Avg Bid)
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    21 bids
    Azure server setup -- 3 4 days left
    VERIFIED

    I am looking for an expert to help me set up a Virtual Machine on Azure with Windows operating system and Standard level of performance. The ideal candidate should have experience in Azure server setup and be knowledgeable in Virtual Machines. Specifically, I need someone who is proficient in: - Azure platform - Virtual Machines - Windows operating system The project will involve the following tasks: - Setting up a Virtual Machine on Azure - Configuring the operating system - Optimizing performance - Providing documentation and training if necessary The project deadline is two weeks, and I am willing to offer a competitive rate for the right candidate.

    $96 (Avg Bid)
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    27 bids

    I just installed Moodle for our school and I need help to learn the basics and setup the interface, the users, and a couple of lessons.

    $168 (Avg Bid)
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    38 bids

    More details: What is the make and model of your wireless card? Broadcom Is there a specific Ubuntu version you are using? Ubuntu 20.04 Are there any other related issues you're experiencing? Network connectivity issues

    $24 (Avg Bid)
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    11 bids

    the truenass stopover installation works with complete configuration and all the plugins and applications available for sharing photos, media, video, bakup all service 2 / creation of two vps centos 7 and panel centos server bind ip , domain ns1 ns2 hostname all 5 LATEST php version , nodjs , fmmpeg latest version , php and varniche , change port ssh 22 add other important fair image snashopt centos 7 working and ip ping, and after installing the centos panel ( CentOS WebPanel ) · everything and possible to do on the dedicated server !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! BUDGET 80$

    $134 (Avg Bid)
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    17 bids
    server admin configure VPS 4 days left
    VERIFIED

    I need admin tech to help me install a free CP on my new VPS, or use the current free CP my host already provided, and configure all the necessary configuration to help me optimize my server to the limits possible, mysql, php fmp, apache, etc.. i am hosting a cloud VPS, inter core CPU contact me for more information please

    $33 (Avg Bid)
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    28 bids

    I have a simple socket server and client on apache2 server. When i send a test request to https, It returns 502 proxy error. Max Budget 20$

    $24 (Avg Bid)
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    12 bids

    I am currently experiencing difficulties accessing a third party website from my digitalocean ubuntu server, and I believe it may be due to a Nameserver issue. I am looking for a freelancer who can help me resolve this issue. Skills and Experience: - Familiarity with digitalocean ubuntu server setup and configuration - Knowledge of Nameserver configuration and troubleshooting - Experience with domain registrar and updating Nameservers - Ability to diagnose and resolve server connectivity issues.

    $18 (Avg Bid)
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    15 bids
    Install Fusionpbx and setup 4 days left
    VERIFIED

    - Install fusionpbx - Setup Inbound/outbound SIP trunks - Setup 3 extns - Test softphones - Delivery

    $131 (Avg Bid)
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    8 bids

    Seeking a skilled developer to configure multiple socks5 connections on an ASUS RT-AC68U router. The goal is to connect socks5 to separate Wi-Fi networks and enable broadcasting. Specific devices include Raspberry 4, ASUS RT-AC68U, ASUS GT-AX11000, GL-AXT1800 (Slate AX), and GL-AX1800 (Flint). Each socks5 should have its DNS set accordingly, and WEBRTC should reflect the IP of the socks5. The project must be completed before 4 june. Please provide a suitable price and address additional queries.

    $878 (Avg Bid)
    $878 Avg Bid
    4 bids

    I am in need of a freelancer who can help me with repairing my Windows 10 PC. Unfortunately, I have tried various troubleshooting steps but they didn't work and I am still stuck at the boot screen. Specifically, I am stuck at the Windows logo. Before attempting any repairs, I need to back up my important files and data. Ideal Skills and Experience: - Proficient in Windows 10 repair and troubleshooting - Experience with data backup and recovery - Good communication skills and ability to explain technical issues in non-technical terms

    $12 (Avg Bid)
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    13 bids
    postfix expert 3 days left
    VERIFIED

    I am currently utilizing two mail servers simultaneously. How can I configure the system to ensure that if the first mail server fails to find a valid mailbox or user associated with the recipient address, the email is automatically redirected to the second mail server? First server: postfix mailserver: Second server: Microsoft Office 365: I get this error when the user is not found in the mail server "Address not found Your message wasn't delivered because the address couldn't be found, or is unable to receive mail." To fix this, I used the transport file but it's not working correctly 1. I created a transport file for the following: [alex@] smtp:[] smtp: 2. I configured postfix to enable this transport file transport_maps = regexp:/etc/postfix/transport

    $63 (Avg Bid)
    $63 Avg Bid
    6 bids
    AWS Hadoop 3 days left
    VERIFIED

    I am looking for a freelancer who can enable tunneling for Hadoop services on my AWS EMR cluster. The cluster configuration is custom, but I am not sure about the specifics. I need tunneling enabled for all Hadoop services, including HDFS, Hive, Pig, MapReduce, Spark, and Tez. My preferred method for enabling tunneling is SSH tunneling. Looking for someone who can get it done immediately Ideal skills and experience: - Experience with AWS EMR cluster configuration and management - Knowledge of Hadoop services and tunneling methods - Proficiency in SSH tunneling and other related technologies

    $16 / hr (Avg Bid)
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    17 bids

    I am looking for a skilled freelancer to resolve an OpenLiteSpeed issue on my Linux server. The issue is related to a PID that does not exist or is a zombie. Ideal Skills and Experience: - Expertise in OpenLiteSpeed server administration - Strong understanding of Linux server operating systems - Experience in troubleshooting server issues, particularly related to PIDs and zombies The freelancer should have experience in identifying and resolving configuration changes that may have caused the issue. Additionally, they should be able to provide clear communication throughout the project and deliver timely results.

    $18 / hr (Avg Bid)
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    10 bids
    Private project Nginx -- 2 3 days left
    VERIFIED

    Budget: 30 Dollars _ Read carefully my 't bid anonymously I am using shared web hosting. I am facing a problem due to run my subdomain. It shows " 403 Forbidden nginx/1.24.0" __ I think somewhere is permission or another problem.

    $25 (Avg Bid)
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    14 bids
    Private project Nginx 3 days left
    VERIFIED

    Budget: 30 Dollars _ Read carefully my 't bid anonymously I am using shared web hosting. I am facing a problem due to run my subdomain. It shows " 403 Forbidden nginx/1.24.0" __ I think somewhere is permission or another problem.

    $103 (Avg Bid)
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    14 bids

    Need to write multiple AWS severless functoins.

    $20 / hr (Avg Bid)
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    33 bids

    We are searching a Skilled sys admin what can virtualization Windows server and blue stack on it. Experience with shell script and Makro. Workflow in details I will send as soon I know how trustful and skilled you are.

    $1193 (Avg Bid)
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    12 bids

    I am in need of assistance configuring Cisco SSL VPN (Any Connect) on a CISCO2911/K9 router. I am unsure if I have the necessary licenses for Cisco AnyConnect and need someone to check for me. I require full remote support during the configuration process. The VPN will be used for both Windows and macOS devices. Ideal skills and experience for this job include: - Expertise in configuring Cisco SSL VPN (Any Connect) - Knowledge of Cisco2911/K9 router - Experience with licensing for Cisco AnyConnect - Ability to provide full remote support - Familiarity with both Windows and macOS devices.

    $96 (Avg Bid)
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    14 bids

    I have a website built on CodeIgniter 3 and MYSQL Database. There are 2800 pages on my website. The visitors per day are 5000 to 7000. I want to migrate this website from Hostgator Dedicated Linux Server to AWS Server. So I need an AWS Cloud Architect who will help me to migrate my website from Hostgator Dedicated Server to AWS Server. I also want that after the migration. The Cloud Architect will train me in troubleshooting and the steps he followed during the migration process.

    $601 (Avg Bid)
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    23 bids

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