Administración de sistemas 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!

De 159,595 opiniones, los clientes califican nuestro System Administrators 4.87 de un total de 5 estrellas.
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    86 trabajados encontrados, precios en USD

    Estoy en la disposición para cualquier tipo de teletrabajo

    $250 (Avg Bid)
    $250 Oferta promedio
    1 ofertas

    El trabajo consiste en configurar 5 dominios que apuntan al servidor con sus virtual host, sus carpetas separadas, sus certificados ssl lestcript - que se renueven automáticamente con tarea cron, cuenta ftp para cada una de las carpetas para subir y actualizar las webs, configuración de un panel tipo hestia o similar, configuración de sus 5 bases de datos con usuario y contraseña, opción de phpmyadmin o similar para la gestión de las bases de datos. Configuración del firewall UFW de los puertos necesarios mail web bases datos ssl

    $208 (Avg Bid)
    $208 Oferta promedio
    13 ofertas
    copia de seguridad 13 horas left

    Solicitamos presupuesto para instalar una copia de plesk a otro plesk. La copia de seguridad es de unos 50 y pico gygabytes. El servidor actual tiene una ip compartida y 4 ips dedicadas, hay que dejarlo todo tal y como funciona en el servidor actual, ya que algunas webs tienen su ip dedicada, exclusivamente para ellas.

    $23 (Avg Bid)
    $23 Oferta promedio
    7 ofertas

    I need to modify and add phone systems so I am looking for experienced freelancers to help me out. The freelancers who apply need to include detailed project proposals, and they should have a full administrative access in order to be considered. Any experience working with CISCO Unified CM administration (Phone System) will be a huge plus.

    $22 (Avg Bid)
    $22 Oferta promedio
    2 ofertas

    I need someone to unblock and fix this for me wget --2023-03-29 05:59:47-- Resolving ()... , , , ... Connecting to ()||:443... connected. HTTP request sent, awaiting response... 403 Forbidden 2023-03-29 05:59:47 ERROR 403: Forbidden.

    $25 (Avg Bid)
    $25 Oferta promedio
    2 ofertas

    I have issues with the production server so I am looking someone to fix it asap. I have 2 different applications assigned to the the same carrier and carrier transfers calls simultaneously to both the ip, but right now as the call reaches fusion its disconnecting the call not allowing it to get transferred to asterisk server.

    $27 / hr (Avg Bid)
    $27 / hr Oferta promedio
    2 ofertas

    Hello! I'm having an issue with my server on AWS EC2 and I am looking for someone to help me resolve it. Since about 9 hours, my server is not reachable anymore. AWS status check failed and says "Instance reachability check failed". I haven't made any recent configuration changes to the server. The server was running for months without problems.

    $14 (Avg Bid)
    $14 Oferta promedio
    11 ofertas
    Mikrotik Rancid 6 días left
    VERIFICADO

    I need help with Mikrotik Rancid for configuration management. The purpose of this project is to use Rancid to help manage the Mikrotik devices connected to my network. This requires Rancid to be used on a Mikrotik device, rather than the other types of devices the software supports. The project does not require any modifications to the network architecture, so the work will focus on setting up the Rancid system. I am looking for someone well-versed in Mikrotik Rancid who can help me get the configuration management up and running quickly and efficiently.

    $98 (Avg Bid)
    $98 Oferta promedio
    5 ofertas
    proxmox setup 6 días left
    VERIFICADO

    I am looking for assistance setting up a Proxmox virtual machine. I already have a server but I don't have any specific OS in mind and would like to use the default settings. The goal is to set up a machine running Proxmox that is reliable and easy to manage. If the virtual machine requirements are met I would like it to be implemented in a way that optimizes performance and security. The ideal freelancer for this project should have experience setting up Proxmox virtual machines from the ground up and be familiar with security best practices and performance optimization techniques. It would also be beneficial to have experience dealing with operating systems that are compatible with Proxmox. If you think you have the relevant skillset and knowledge and would like to help with t...

    $2 - $5 / hr
    Sellado
    $2 - $5 / hr
    2 ofertas

    I'm looking for someone to assist with migrating information from my current Xneelo (Outlook) platform to G-suite to keep Outlook sync. I will not need any help setting up the users, emails and accounts as I have staff that can do that. Instead, I require assistance with migrating all email, calendar, and contact information from my Xneelo to G-suite. If you have experience performing such a task, I would be grateful for your help. We can handle the MX record changes, but would need advice on how to do it to make sure we have only a little bit of interruptions. It is only for 7 users.

    $144 (Avg Bid)
    $144 Oferta promedio
    13 ofertas

    Setup a site to site VPN configuration from local to Azure Cloud.

    $194 (Avg Bid)
    $194 Oferta promedio
    17 ofertas
    Remote desktop connection 6 días left
    VERIFICADO

    I'm looking for an experienced developer to help me set up a secure remote desktop connection. They need to be skilled in setting up RDP as this is the type of connection I need. This project does not involve access to any specific applications, nor do I need any extra collaboration tools enabled. They just need to help me securely set up the remote desktop connection. The developer must have experience with this type of work, as well as excellent problem-solving skills.

    $206 (Avg Bid)
    $206 Oferta promedio
    9 ofertas
    server management specialist 6 días left
    VERIFICADO

    I need frequent help to ensure the servers are always stable

    $150 (Avg Bid)
    $150 Oferta promedio
    35 ofertas
    Windows administrator 6 días left
    VERIFICADO

    I am looking for a Windows administrator to help me manage my small business environment. The role requires knowledge of software installation, particularly with Windows 10. The administrator would be responsible for setting up hardware and network administration, as well as providing technical solutions to companies. This is an exciting project that offers the opportunity to work with a wide range of technologies and to develop valuable skills. The successful candidate will have excellent interpersonal and problem-solving skills, as well as the ability to thrive in a fast-paced working environment.

    $22 / hr (Avg Bid)
    $22 / hr Oferta promedio
    41 ofertas
    AWS Lightsail shell command script 6 días left
    VERIFICADO

    We urgently need an AWS CLI script that will automatically find all Lightsail instances, and run shell commands on them. These are 3CX servers, and we just need to remove a couple files. But we have well over 100 servers to run them against. The script needs to go to each instance and run: cd /var/lib/3cxpbx/Instance1/Data/Http/electron/windows sudo rm -rf 3CX* Time is essential - happy to pay more for fast results.

    $689 (Avg Bid)
    $689 Oferta promedio
    40 ofertas

    I am looking for someone to install the NGU Mailman on a Linux Debian 11 web server. Specifically I need a fresh install of a specific version. Unfortunately, I do not have SSH/SFTP/SSL access to the server so please bear this in mind when applying for the job. Thank you in advance for your offer and I look forward to working with you.

    $23 (Avg Bid)
    $23 Oferta promedio
    3 ofertas
    plesk expert 6 días left
    VERIFICADO

    I am looking for a plesk control panel expert who can help us in different kind of tasks, along with our application developers

    $13 / hr (Avg Bid)
    $13 / hr Oferta promedio
    29 ofertas

    Need help creating a Drupal site on AWS.

    $2175 (Avg Bid)
    $2175 Oferta promedio
    58 ofertas

    I need help removing Kaspersky antivirus from my PC, which is running Windows 10. The virus has a password and I'm not sure how to remove it. I'm looking for a freelancer with the necessary experience to carry out the job. Specifics about the project include one-time configuration such as password removal and the successful freelancer should include details of their past work and experience in their application.

    $24 (Avg Bid)
    $24 Oferta promedio
    16 ofertas

    I need somebody to create a Cloud lab of Symantec Ghost Solution Suite 3.0 for 2 weeks only. And allow 10 users to access it Note: The bidder should have the setup files of Symantec Ghost Solution Suite 3.0 or later.

    $55 (Avg Bid)
    $55 Oferta promedio
    2 ofertas
    AWS URL 502 error need to fix 5 días left
    VERIFICADO

    AWS URL 502 error need to fix,

    $14 (Avg Bid)
    $14 Oferta promedio
    16 ofertas

    Need installation of free web server panel on linux GCP server Need to install cassandra database

    $91 (Avg Bid)
    $91 Oferta promedio
    11 ofertas
    Issues with a 40G network 5 días left
    VERIFICADO

    I had a 1Gb network which I upgraded recently to 40Gbps. I have DELL servers with ESXi7 installed. My issues. When I run iperf between two virtual machines, I get a bandwitch ranging from 6Gbits/sec to 10Gbits/sec. When I copy files with scp I getting a transfer speed of about 110-120MB/s which is very far from the theorical bandwitch of 1GB/s x 4 ~ 4G/s for a 40G network. Recently I discovered that encryption reduce transfer speed so, I setup FTP server. Transfer speed doubled with FTP. I got a transfer rate about 240-280 MB/s. I also updated MTU to 9000 on both hosts and VMs but transfer rates are still the same. My needs. I am looking for an Cisco/VMWare expert who can identify and solve the issue. I need 40G Network bandwidth as configured in Switch to be reflected in Virtual ma...

    $220 (Avg Bid)
    $220 Oferta promedio
    7 ofertas

    I am looking for someone to configure a Proxmox backup server to a TrueNAS connection using NFS. I already have a backup solution in place, but need to set up an NFS connection between the two servers. The person I am looking for must be knowledgeable and experienced in setting up and configuring Proxmox and TrueNAS servers. I need someone who can ensure that all the settings and services are configured correctly and securely, so that my data is backed up safely and reliably. If you have experience in this field, I would love to hear from you!

    $177 (Avg Bid)
    $177 Oferta promedio
    14 ofertas

    We have some production server running Apache2 web server with arund 100 virtual host per server. We want to be able to monitor the workload generated by each single virtual host in order to identify it a specific customer it is geneating too much load. We need help in order to properly configure apache and to activate monitoring tools so that we can achieve this goal. Wou'll NOT get access to production server so we need instruction on what to do. Thank you

    $180 (Avg Bid)
    $180 Oferta promedio
    19 ofertas
    Setup our new Windows Server 5 días left
    VERIFICADO

    Just Setup Standard Rules and directories. Setup up Inboud and Oubound Rules. Setup 5 Users. Setup the Printer Server Done

    $167 (Avg Bid)
    $167 Oferta promedio
    49 ofertas

    Would require one on one mentoring sessions on the mentioned devops tools on a regular or weekly basis

    $6 / hr (Avg Bid)
    $6 / hr Oferta promedio
    11 ofertas
    Cisco 1815 Configuration 5 días left
    VERIFICADO

    Hello, I have a Cisco 1815 AP and I need help converting it from CAPWAP to Cisco Mobility Express. Can you help with this? I think a firmware file is needed behind a Cisco Account

    $36 (Avg Bid)
    $36 Oferta promedio
    12 ofertas
    Create a mining pool 4 días left
    VERIFICADO

    I am seeking an experienced freelancer to create a secure and reliable mining pool for Kaspa, Dynex, Ergo, Monero, and Litecoin. I have already set up a VPS and domain, and the operating system is Ubuntu 18.04, which can be upgraded to 20.04 if necessary. The mining pool should have a user-friendly interface and a clear system, similar to , , or The mining pool should possess the following features: A user-friendly interface for miners A secure payment system Mining statistics and monitoring DDOS protection An automatic payout system An SSL certificate My budget for this project is $600 USD, but I am willing to negotiate. If you have experience in creating mining pools and can deliver a high-quality product within my budget and timeline, please submit your proposal along with your rele...

    $562 (Avg Bid)
    Destacado
    $562 Oferta promedio
    4 ofertas
    Consultor Especialista Mikrotik 4 días left
    VERIFICADO

    Requerimiento Obligatorio : Hablar Español Configurar Mikrotik Conocimientos requeridos Switch Vlan Trunk Vlans Walled Mangle NAT Filter Rules PPTP - L2TP Certificados Radius USERMAN USERMANAGER

    $133 (Avg Bid)
    $133 Oferta promedio
    8 ofertas
    Linux admin 4 días left
    VERIFICADO

    looking for someone can recover file deleted from server ASAP

    $14 / hr (Avg Bid)
    $14 / hr Oferta promedio
    7 ofertas
    Small Linux Project 4 días left
    VERIFICADO

    I am looking for a talented Linux professional to build a new product from an existing codebase. The project will involve customizing the existing codebase to include additional functionality. The timeline for the project is estimated to be less than 2 hours. this project is expected to be delivered quickly and cost-effectively, solid communication and high availability are both highly appreciated. If you think this could be the right opportunity for you, please get in touch. I look forward to working together.

    $22 (Avg Bid)
    $22 Oferta promedio
    4 ofertas
    Coupa Admin 4 días left

    Provide guidance on solution requirements, technical design, integration architecture, and solution recommendations. Perform administration of the Coupa instance.

    $9 - $15 / hr
    $9 - $15 / hr
    0 ofertas

    Configure, implement and demonstrate a working simulation of the following practical scenario implemented using all or some of the following tools. Virtual Machines, GNS3, Syslog, Observium & PFSense. devices in the above topology must be able to communicate with each other. Webservers should send their respective syslog traffic to the Kiwi Syslog Server. Company Router and Kiwi Syslog Server should pass their SNMP traffic to the Observium Server PfSense to Block all external traffic and allow Staff PC 1 to communicate with the DMZ Web Server.

    $335 (Avg Bid)
    $335 Oferta promedio
    9 ofertas

    Hi there! I am in need of someone who can help me configure new relic on my ec2 servers that are running Linux. I need help specifically with monitoring the transactions that occur on the servers, and the type of data that is important for me to monitor is error log analysis. need to monitor web server and chrons

    $19 (Avg Bid)
    $19 Oferta promedio
    5 ofertas

    I have Kali Linux on Virtual Box and need someone to install Security Onion onto the Virtual Box (File provided) also. Once Security Onion is done I need you to ping the Kali Linux and Security Onion together. Will provide a document with required setting

    $25 (Avg Bid)
    $25 Oferta promedio
    10 ofertas

    I need a windows 10/11 with the intel raid drivers so I don’t have to change the storage settings in bios. I would like to keep bios default with “RAID On”. Thanks,

    $40 (Avg Bid)
    $40 Oferta promedio
    2 ofertas

    Install graphics XRDP Add 4 users Install Google Chrome, Viber, Telegram, WhatsApp Price: $30 -- $50

    $110 (Avg Bid)
    $110 Oferta promedio
    4 ofertas
    Server setup 4 días left
    VERIFICADO

    FIVEM GTA5 ESX Script installation

    $15 / hr (Avg Bid)
    $15 / hr Oferta promedio
    10 ofertas

    HI, We are hiring a Linux sys admin to help us configure a digital ocean vps. We want our primary domain to be configured and n1 ans ns2 configured to point to our whm/cpanel vps so we can easily add more domains to our vps pointing to our name servers. Fairly basic tasks for an experienced sys admin. We can give you domain access for our primary domain. We want our primary

    $22 (Avg Bid)
    $22 Oferta promedio
    26 ofertas

    I am looking for assistance debugging an AWS Serverless app CDK, locally. As I have experience working with serverless architectures, I also need help with the deployment of this application on AWS. The project will require expertise in debugging, as well as familiarity with AWS services.

    $16 / hr (Avg Bid)
    $16 / hr Oferta promedio
    22 ofertas

    This is a code I got and the purpose is to sell web hosting and domains and I asked the creators to customize it for me so I could sell VMs (VPS/RDP) I wanted to use the Proxmox virtualizer and I wanted them to connect the Virtualizer APIs in my project for creating VMs and well the price was too expensive so that I could not pay for the service if there is someone who can help me with this the site is in php.

    $178 (Avg Bid)
    $178 Oferta promedio
    14 ofertas

    Looking for someone to install the latest curl impersonate on Ubuntu vps

    $97 (Avg Bid)
    $97 Oferta promedio
    23 ofertas

    Hello. I need some help with a new mautic instance. I mainly need help setting up chron tasks and making sure everything works properly.

    $14 / hr (Avg Bid)
    $14 / hr Oferta promedio
    18 ofertas

    Hello, I am looking for a people who can help me with installing the GUI on the ubuntu VPS and make it enable for me to access it via XDRP. It would be bonus if you have experience with hostwinds hosting service.

    $23 (Avg Bid)
    $23 Oferta promedio
    11 ofertas

    I am looking for someone to help set up our project's environment on AWS and GIT, as well as setting up nameserver settings. I already have an existing domain, and I need assistance with the nameserver configuration. The ideal freelancer will have experience working with AWS and GIT, as well as nameserver settings. Please include examples of past projects you have worked on. If your background meets our needs, please apply for this job and we look forward to reviewing your application. Thank you! I am not a developer. We currently have an AWS server and a github project folder. However, any changes I make to the information in AWS or GitHub are not being reflected on the server. I need advice and configuration from a developer who can identify and answer the problem.

    $57 (Avg Bid)
    $57 Oferta promedio
    28 ofertas

    Please see attached rejected mail header. For one customer we get "Message delivery to a customer failed an is returned with this a 554 MTA's poor reputation header " I think this relates to the from shows as the localhost IP address from our mail server as this looks wrong (see attached rejected mail header)? Our reputation is neutral and our server name and IP address are not blacklisted.

    $27 (Avg Bid)
    $27 Oferta promedio
    12 ofertas
    Looking for a Wireguard bug fixer 3 días left
    VERIFICADO

    Hey there, im looking for someone who could help me to make a bugfix on a Side by Side VPN. I have a Server in the Datacenter running opensense and i have a OpenWRT router at home. I would like to create a Side by Side connection between. Everything is setup, but i have somewhere a little config glitch and i can't find whats the problem. Are you able to help?

    $38 (Avg Bid)
    $38 Oferta promedio
    9 ofertas

    Hello, I am looking for a reliable and effective system administrator that can work on linux and windows servers. I have four servers (currently) and look for someone long term to help me. Some of the requirements: * set up servers * connect them to the correct domain * update keys * setup frequent backups Looking for an immediate start. MUST be able to demonstrate previous experience.

    $23 / hr (Avg Bid)
    $23 / hr Oferta promedio
    47 ofertas
    URL Redirection causing SEO issue 3 días left
    VERIFICADO

    I am looking for a Freelancer who can help me with an issue that I'm facing with my website. My website links are causing some SEO difficulties and I need help with URL redirection in order to improve the overall performance. Currently, the website's SEO is at an average status so I am interested in finding someone who can get my website links properly redirected in a way that will improve my website's rankings and drive more traffic to the site. We are using Cloudflare, that's means you need to have a good experience with Cloudflare to fix our problems.

    $13 / hr (Avg Bid)
    $13 / hr Oferta promedio
    7 ofertas

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