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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!

Από 160,421 αξιολογήσεις, οι πελάτες αξιολογούν τους System Administrators με 4.88 από 5 αστέρια
Πρόσλαβε System Administrators

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    82 δουλειές που βρέθηκαν, με τιμές EUR
    Help me with Exim -- 4 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Hey how are you doing? I have something on Exim to achieve, it is somewhat advanced, please don't waste my time....!!!.. Start your bid with "I have experience with Exim ::D" Budget Fixed Thanks

    €12 / hr (Avg Bid)
    €12 / hr Μέση Προσφορά
    3 προσφορές
    Network ENGINEER REQUIRED(PERSON MUST BE FROM IRELAND) 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    We're looking for Network Engineer level1 in Dublin, Ireland. This is an onsite job and person must be there in Dublin Duration: 1 year l, full time Start: ASAP Languages Required: English Valid work permit and CCNA certificate is required. Key Responsibilities: • To liaise with customers to troubleshoot and resolve faults, and act as an internal point of escalation for technical issues • Pro actively handle customer queries by keeping them fully informed of progress, ensuring that requests are answered/fulfilled to the customer's complete satisfaction in each and every instance • Act as an interface with service suppliers, ensuring that incidents which need to be passed to them for resolution are done so professionally with a view to rapid response a...

    €1791 - €1990
    Τοπικό
    €1791 - €1990
    0 προσφορές
    link nameservers to ip address 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I got a new server and now need to link domain with ip address in nameserver, can u help me?

    €2 / hr (Avg Bid)
    €2 / hr Μέση Προσφορά
    9 προσφορές
    i need some one to install one code on my server 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Hello, I'm looking for someone to install and configure a npm code on my server. I do not need hosting services, however, I do need installation and configuration services for this project. It is a relatively simple project and should not require too much of your time. If you are confident that you can get this job done properly, I would really appreciate your help. Thanks, [Client Name]

    €11 (Avg Bid)
    €11 Μέση Προσφορά
    6 προσφορές
    Configure VPN for server from scratch 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I want to configure my server to be access from VPN. I need to set up a VPN connection between host device and external computer. The project includes: Installing VPN Client software configuring VPN on Sophos XG Firewall Setting up RDP for remote access.

    €111 (Avg Bid)
    €111 Μέση Προσφορά
    3 προσφορές
    Mobile & Static Proxy 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    We have many IP address. can you help us create proxy

    €23 / hr (Avg Bid)
    €23 / hr Μέση Προσφορά
    3 προσφορές

    [Tue Mar 21 12:20:02.612599 2023] [core:error] [pid 7535:tid 140570269751040] [client 3.142.198.44:36950] AH00124 : Request exceeded the limit of 10 internal redirects due to probable configuration error. Use 'LimitInternalRecu rsion' to increase the limit if necessary. Use 'LogLevel debug' to get a backtrace., referer: http://3.142.198.44 .

    €11 (Avg Bid)
    €11 Μέση Προσφορά
    4 προσφορές
    Certificado SSL en VPS 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Hola, necesito poner un certificado SSL en un VPS, por favor persona que hable español para mejor entendimiento.

    €26 (Avg Bid)
    €26 Μέση Προσφορά
    12 προσφορές

    I'm dreaming of owning a Minecraft server for players from all over the world (and it would be very nice to have some income from it but not needed), but I simply lack the knowledge to get started. Could anyone help me get started with this pretty big job?

    €2078 (Avg Bid)
    €2078 Μέση Προσφορά
    20 προσφορές
    Limpieza de kinsing en Ubuntu 20 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    ¡Hola! Estoy buscando a alguien que pueda ayudarme a resolver un problema de malware de nombre Kinsing en mi servidor. El servidor ha sido infectado con un virus y necesito a alguien con experiencia en seguridad informática para eliminar el malware y asegurarse de que mi servidor esté protegido contra futuros ataques. El candidato ideal tendría experiencia en la detección y eliminación de malware, así como en la configuración de medidas de seguridad para prevenir futuros ataques. También debería estar disponible para comenzar a trabajar en el problema de inmediato. Si crees que tienes las habilidades y la experiencia necesarias para ayudarme con este problema, por favor contáctame para que podamos discutir má...

    €49 (Avg Bid)
    €49 Μέση Προσφορά
    6 προσφορές
    Seting up CWP and transferring data from Directadmin to CWP 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Have directadmin but need to install CWP on new server and transfer data from directadmin to CWP server

    €212 (Avg Bid)
    €212 Μέση Προσφορά
    17 προσφορές
    Windows Server 2012 rebuild raid without losing data 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I want to rebuilt RAID without losing data because it shows unassigned drives as per the attached

    €123 (Avg Bid)
    €123 Μέση Προσφορά
    4 προσφορές
    RDP on Azure disabled 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    The RDP client on my Azure VM has become disabled. There are steps that need to be followed as suggested by Microsoft but as I haven't done this before I'd prefer to have someone who knows what they are doing follow those steps. If you have a rating > 4.9 and proven previous experience get in touch. Payment for the milestone will occur once the VM can be reached by RDP again. Thanks for your time.

    €72 (Avg Bid)
    €72 Μέση Προσφορά
    23 προσφορές
    Apache Fineract Expert 6 μέρες left

    We need to configure Fineract, Localise the solution and also train my team on solution. If you have excellent experience working with Apache Fineract and have training and configuration experience on the platform, please let me know.

    €697 (Avg Bid)
    €697 Μέση Προσφορά
    1 προσφορές

    I have a hosted client machine running ubuntu 18.04 LTS. I have installed wireguard and set it up as a client. I installed wireguard on another hosted 18.04 LTS machine and set up as a server. The two machines successfully connected with a handshake and traffic was passing. I then set up a new hosted server (with the same host) and wanted to move the wireguard server to this machine, so repeated the setup process following the same instructions I previously used. I updated all relevant keys on client and server. No matter what I do I cannot get a handshake connection from client to server and no traffic will flow. I need someone to debug my setup and check what is going wrong.

    €45 (Avg Bid)
    €45 Μέση Προσφορά
    7 προσφορές
    Need consultation with Ubiquiti Unifi Expert 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I have a Ubiquiti Unifi network and need some assistance, happy to pay for consultation time

    €15 / hr (Avg Bid)
    €15 / hr Μέση Προσφορά
    9 προσφορές

    For this project I'm looking for a VERY competent consultant on Windows systems and (maybe) on ethical hacking. Standard approach is not useful! My customer has outsourced the management of his network and now there are relationship difficulties. Security client management (in my opinion) was handled very-very-very well but now my customer has no grant to do nothing. The customer client is Windows 10 Enterprise 21H2 - Experience Pack 120.2212 Actual landscape: - His windows user is not local machine Administrator. - The local disk is encrypted via BitLocker (booting from the outside therefore does not allow reading the data) - BIOS has a password, not known by my customer. - You cannot install unauthorized applications, not inserted into "Software Center". - If you try to ...

    €213 (Avg Bid)
    €213 Μέση Προσφορά
    9 προσφορές
    DB installation 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I am looking for a freelancer to install a MySQL database on my server. I am looking for someone with experience in setting up databases, and I need a database administrator to manage the server after installation. I have a server setup and ready to go, and I need an experienced developer to get the job done quickly and efficiently. If you are confident in your skills and have extensive knowledge in setting up, administering, and managing databases, then I would like to hear from you.

    €120 (Avg Bid)
    €120 Μέση Προσφορά
    73 προσφορές
    Help me with Exim -- 3 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Hey how are you doing? I have something on Exim to achieve, it is somewhat advanced, please don't waste my time....!!!.. Start your bid with "I have experience with Exim ::D" Budget Fixed Thanks

    €20 (Avg Bid)
    €20 Μέση Προσφορά
    4 προσφορές
    Need Linux help. 5 μέρες left

    I have a project based on snort. I need help in that. I will share the details in chat. No companies please.

    €14 (Avg Bid)
    €14 Μέση Προσφορά
    7 προσφορές
    AWS ECS Help 5 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I am deploying containers on AWS ECS and can't get the ELB to successfully healthcheck. I see a gateway timeout. I need help with: CloudFormation ECS Fargate ELB RDS I would like to solve the problem by screen sharing.

    €45 / hr (Avg Bid)
    €45 / hr Μέση Προσφορά
    16 προσφορές
    Engineer for Jenkins 5 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I am looking for a DevOps Engineer with expert experience in Jenkins and advanced understanding of related technologies. The Engineer I'm looking for should be knowledgeable in the integration, deployment and management of large, multi-functional systems, combined with expertise in design, automation, coding and scripting. They should have experience in orchestrating solutions within cloud environments and have a good understanding of the underlying infrastructure, configuration and operations. The engineer should be organized and have the ability to juggle multiple tasks simultaneously. The expert I'm seeking must have extensive knowledge in Jenkins. This includes but is not limited to a strong understanding of Jenkins pipeline development, user management, and project config...

    €11 / hr (Avg Bid)
    €11 / hr Μέση Προσφορά
    6 προσφορές

    For this project I'm looking for a VERY competent consultant on Windows systems and (maybe) on ethical hacking. Standard approach is not useful! My customer has outsourced the management of his network and now there are relationship difficulties. Security client management (in my opinion) was handled very-very-very well but now my customer has no grant to do nothing. The customer client is Windows 10 Enterprise 21H2 - Experience Pack 120.2212 Actual landscape: - His windows user is not local machine Administrator. - The local disk is encrypted via BitLocker (booting from the outside therefore does not allow reading the data) - BIOS has a password, not known by my customer. - no boot his laptop via USB - You cannot install unauthorized applications, not inserted into "Software C...

    €207 (Avg Bid)
    €207 Μέση Προσφορά
    12 προσφορές

    We're looking for IT desktop support level1(onsite) in Tallin, Estonia Duration: 3 weeks Contract: full time (freelance) Start: 4 april to 28 april Skill Required: End user computing Windows installation Software installation MS office 365 Service now ticketing tool SCCM Active Directory Laptop imaging Hardware troubleshooting network printer installation Valid work permit is Required. Salary: 60 euros per day.

    €138 (Avg Bid)
    €138 Μέση Προσφορά
    2 προσφορές

    I'm looking for someone to help me setup up two of the same MUNBYN model printers. I need to connect them both to the same computer and I don't need any assistance with any other peripheral devices (scanners, etc.). I'm looking for someone who is experienced with setting up printers, configuring networks, and troubleshooting printer issues. If you have the necessary printing capabilities and the expertise to help me out, please let me know. Thanks!

    €16 (Avg Bid)
    €16 Μέση Προσφορά
    25 προσφορές
    V P N Expert 5 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    V P N Expert needed Your job is to install v2ray, trojan, vmess and other vpn protocols on digital ocean servers To create admin panel so we can create users and subscriptions

    €15 / hr (Avg Bid)
    €15 / hr Μέση Προσφορά
    4 προσφορές
    linux project -- 2 5 μέρες left

    Develop a Replicator on a Single Switched lan. that's Divide a large task into multiple small tasks and assign it to a different machine on the LAN. If Interested Message me for more Details

    €84 (Avg Bid)
    €84 Μέση Προσφορά
    3 προσφορές
    linux project 5 μέρες left

    Develop a Replicator on a Single Switched lan. that's Divide a large task into multiple small tasks and assign it to a different machine on the LAN. If Interested Message me for more Details

    €85 (Avg Bid)
    €85 Μέση Προσφορά
    3 προσφορές
    cPanel Server not Sending Emails via 3rd Party SMTP settings 5 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I have moved to a new server installed cPanel sites are working but sites have 3rd party SMTP settings that were working on previous server but on that server its not working I have disabled CSF Firewall and testing all settings in cPanel that I know but still failed to send emails via 3rd party SMTP service. Need someone who can fix that on anydesk

    €26 (Avg Bid)
    €26 Μέση Προσφορά
    10 προσφορές
    Linux VAPT within network 5 μέρες left

    Linux VAPT within network . Educational purpose and understanding

    €153 (Avg Bid)
    €153 Μέση Προσφορά
    9 προσφορές
    cpanel issue unable to give user db peromissions 5 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    we have an issue on cpanel related to db , unable to give permissions at all ! note : work is from anydesk only you can not restart , delete or do anything that may cause offline to our servers !

    €25 (Avg Bid)
    €25 Μέση Προσφορά
    28 προσφορές

    Immediate Start We are seeking a highly motivated and experienced Desktop Support Administrator with 2-5 years of hands-on experience working with Windows technologies, such as Servers and Office 365. The successful candidate will provide technical support and assistance to our growing organization, ensuring the smooth operation of our IT infrastructure. This role will be performed remotely, working from home in the Central Standard Time (CST) time zone. Responsibilities: Provide technical support for end-users, including troubleshooting and resolving issues related to hardware, software, and network connectivity Administer and maintain Windows servers and Office 365 applications, ensuring optimal performance and system availability Monitor and respond to help desk requests in a timely ...

    €682 (Avg Bid)
    €682 Μέση Προσφορά
    12 προσφορές

    We are a web hosting company that provides shared hosting, reseller hosting, VPS hosting, and dedicated servers. We are looking to hire a full time Operations Coordinator. As Operations Coordinator, it will be your duty to ensure the smooth, day to day operation of our web hosting company, so this may include both support/systems administration and also sales/admin related functions, and overseeing the support team. Training will be provided for any admin/sales/billing related functions, but you should be expected to have technical understanding of the technologies encompassing web hosting (i.e. Linux, cPanel, etc). This is a remote position. You may work from anywhere in the world as long as you have a stable and reliable Internet connection. So you can get an idea of where our remote...

    €1227 (Avg Bid)
    €1227 Μέση Προσφορά
    45 προσφορές

    - Tome en consideración la dirección IP asignada por su instructor LA IP ES: - Realice un esquema de direccionamiento IP en base a los requerimientos presentados para cada VLAN y enlace entre routers. Puede realizarlo a mano o en archivo digital - Implemente la configuración básica de los dispositivos de red - Implemente servicios de VLAN en los routers correspondientes - Implemente los diferentes tipos de InterVLAN que den solución y comunicación a cada sistema autónomo de la red - Implemente una ruta estática para comunicarse con el router ISP. Necesito un breve avance para el martes 21/03/2023 pero concluir el ejercicio el sábado 25/03/2023. Realizar la practica mediante estos videos de ejemplos; ADJUNTO UNA IMAGEN D...

    €25 (Avg Bid)
    €25 Μέση Προσφορά
    7 προσφορές

    Need help to install Knime on my linux server. It can be Debian, ubuntu of Centos. I need the instruction on how to install it. It is an all or nothing project, so please place a bid if you have done it before. Questions, suggestion or comments are welcomed. IF you know a better alternative Knime, we can also consider

    €14 / hr (Avg Bid)
    €14 / hr Μέση Προσφορά
    8 προσφορές
    mining service server 4 μέρες left

    installation linux ubuntu private server to connect multiple asics on this server for solo mining 1-doge coin et ltc en dual 2 bitcoin 3-qwerty coin server live stats of méning

    €382 (Avg Bid)
    €382 Μέση Προσφορά
    8 προσφορές
    Email Server with 2FA Anti Spam and Anti Spoofing 4 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Hi greetings. We are looking for someone to either make an email server with Hard Spam Fail, Anti Spam, Anti Spoofing and Scanned Attachments or we have an open source panel which has rainloop email system so they can develop in it.

    €483 (Avg Bid)
    €483 Μέση Προσφορά
    18 προσφορές
    DrChrono admin 4 μέρες left

    Administration of 2 DrChrono instances. Building and maintaining products. Building and updating reports. Providing leadership best practice guidance.

    €42 / hr (Avg Bid)
    €42 / hr Μέση Προσφορά
    6 προσφορές
    Hostgator Server Migration 4 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    We need to migrate from one server on host gator to new server on host gator.

    €100 (Avg Bid)
    €100 Μέση Προσφορά
    52 προσφορές
    proxy fastapi setup to domain 3 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    proxy fastapi setup to domain when enter /api_ap its redirect to 8000 port ubuntu apache

    €14 (Avg Bid)
    €14 Μέση Προσφορά
    5 προσφορές
    I need to Ubuntu expert 4 μέρες left

    Please help to login Ubuntu 14 and access desktop and files for my study. Screen is coming blank and I don't understand

    €22 (Avg Bid)
    €22 Μέση Προσφορά
    11 προσφορές
    nginx config to work like a proxy -- 2 4 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    server A to redirect requests to server B without traffic being on server A and server B to accept only from server A

    €38 (Avg Bid)
    €38 Μέση Προσφορά
    12 προσφορές

    I have ubuntu 18.04.6, running Exim as a mail server, and I can not receive or get an email. The server is sending emails to unknown emails. Exim version 4.90_1 #2

    €124 (Avg Bid)
    €124 Μέση Προσφορά
    7 προσφορές
    proxy fastapi setup to domain fast soon 4 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    proxy fastapi setup to domain when enter /api_ap its redirect to 8000 port ubuntu apache

    €23 (Avg Bid)
    €23 Μέση Προσφορά
    4 προσφορές
    proxy fastapi setup to domain fast 4 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    proxy fastapi setup to domain when enter /api_ap its redirect to 8000 port ubuntu apache

    €26 (Avg Bid)
    €26 Μέση Προσφορά
    3 προσφορές
    proxy fastapi setup to domain -- 2 4 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    proxy fastapi setup to domain when enter /api_ap its redirect to 8000 port ubuntu apache

    €19 (Avg Bid)
    €19 Μέση Προσφορά
    3 προσφορές
    aws configuration for Laravel and asterisk 3 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    i have laravel app that is managing user and apis . now i want someone who help me to in aws configuration for Laravel and SIP server asterisk ( user mapping with device)

    €44 (Avg Bid)
    €44 Μέση Προσφορά
    5 προσφορές
    Trophy icon AWS (Server installations 3 μέρες left

    AWS (Server installations AWS PostgresSQL AWS flutter flutter build apk flutter build iso flutter build web =========== I have a Flutter project to setup

    €9 (Avg Bid)
    Εγγυημένος
    Operation system 3 3 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Hello freelancers, I am looking for help with a project I'm launching for an operation system 3. For this project, the specific operation system that needs to be used is Linux. In order to be considered for this project, prospective freelancers must include their past work in their applications. Additionally, only read-only access should be required from the designated freelancers. Feel free to contact me if you have any further questions about the project, and thank you for your time!

    €128 (Avg Bid)
    €128 Μέση Προσφορά
    10 προσφορές

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