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 167,189 reviews, clients rate our System Administrators 4.86 out of 5 stars.
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    89 jobs found, pricing in CAD

    I am experiencing issues with Active Directory 2016 replication in a topology that includes 10-50 domain controllers. The tasks that need to be performed include: - Diagnosing current replication problems. - Providing solutions to rectify replication issues. - Implementing troubleshooting practices to avoid future issues. The ideal freelancer for this task will have expert knowledge and experience in Microsoft Active Directory, specifically the 2016 version, and a deep understanding of domain controller topologies. They will be proficient in diagnosing and fixing replication issues and optimizing directory performance. A solid background in IT system administration is also essential for this job.

    $201 (Avg Bid)
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    22 bids

    I'm looking for a skilled individual to setup and configure a new server with CentOS 8 cPanel. The main purpose of this server will be to host websites. Key Responsibilities: - Install CentOS 8 with cPanel - Configure cPanel for website hosting - Ensure the server is properly secured Ideal Skills: - Proficiency in CentOS and cPanel - Experience in setting up and configuring servers - Strong background in web hosting Your role in this project is crucial, as the server will be used to run several client websites. Your expertise in server setup and security measures will be vital in ensuring optimal performance and reliability for our web hosting service. Please provide your relevant experience when bidding.

    $31 / hr (Avg Bid)
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    62 bids

    I have lost my old server I want to build a new one - setup WHM cPanel & migrate 2 website on it the website are on Python & laravel my Bud Get is 6 0 A u D

    $38 (Avg Bid)
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    30 bids

    Tasked with migrating our existing PHP/Apache project files and DB database from our live server to a new vendor server. This positions requires: - Working hands-on with Unix servers - Strong understanding of PHP 7.0, the version currently utilized on our live server - Familiarity with Apache 2.4, the version currently running on our live server - Capable of accurately inputting database credentials - Ensuring the project is fully functional on both web and mobile platforms Ideal candidate will exhibit expertise in server administration, specifically Unix. Familiarity with PHP 7.0 and Apache 2.4 is required. Knowledge of databases, particularly inputting credentials, is appreciated. Experience in ensuring cross-platform functionality on web and mobile applications is a huge plus.

    $154 (Avg Bid)
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    I'm in need of a professional who can optimize the storage of my VPS server running on the Intel operating system. The goal is to make sure there is enough space on ssd storage to migrate my website to other hosting provider Key Points: - Identify files that are not required and free some storage from the ssd disc so that the migration could be done

    $26 (Avg Bid)
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    We are seeking experienced Network Administrators to work on an undefined project. The specific tasks, operating systems and size of our network infrastructure has not been disclosed. If you have broad experience spanning several areas of network administration such as configuring routers, switches, troubleshooting network connectivity issues, implementing network security measures across various operating systems (Windows, Linux, MacOS) and network sizes, you might be the right fit. Please send us your proposals showcasing your comprehensive skills and versatility.

    $738 (Avg Bid)
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    I have a xenserver with four windows virtual machines. it is installed in a DELL server with RAID. A electricity failure damage the boot and got the grub rescue console. I load ubuntu from a usb and can see the lvm partition, but can copy. So I need some one to help me to copy the virtual disk to other xenserver instalation to load the fout virtual machines.

    $175 (Avg Bid)
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    15 bids

    I'm in need of a skilled professional to configure my Fusion PBX system to implement direct call routing. Key Requirements: - The system is currently cloud-hosted. Prior experience with cloud-hosted PBXs is a plus. - I have between 1-10 phone numbers that need to be set up for direct routing. So the Requirement is : You have to configure Inbound Calls using a Soft Switch and Route them to Outbound to an External Location. I am not familar with Fusion PBX UI, which is causing the Problem only. The ideal candidate for this project will have: - Relevant experience in configuring Fusion PBX systems. - Strong understanding of direct routing in PBX systems. - Prior experience with cloud-hosted PBX systems.

    $141 (Avg Bid)
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    will log on with me via team viewer, or other remote app and configure now please

    $55 (Avg Bid)
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    7 bids

    I'm seeking an experienced IT professional to provide support in setting up Office 365 and company email hosting. Requirements: - Domain name already exists. - Set up Office 365 for optimal use of Word, Excel, Outlook, and Teams. - Establish 1-10 professional, fully-functioning email accounts. Ideal Skills: - Previous work with IT setup for startups. - Familiarity with Office 365 and email hosting. - Fast, efficient, and thorough communication skills. A successful outcome would be seamless integration of Office 365 services as well as fully set-up, working email accounts for my company.

    $170 (Avg Bid)
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    37 bids

    For this project, the primary goal is to upgrade my Microsoft Windows Server 2008r2 to Windows Server 2022. - The main reason for the upgrade is to enable new features and functionality that are available in the latest Windows Server edition. - Particular emphasis will be placed on enhancements to the administrative tools and security of the system. - Specifically, I am looking for improvements in user management and further advancements to the server's security infrastructure. - It's ideal that potential freelancers have previous experience in Windows Server upgrades and have a proficient understanding of administrative tools and security protocol changes in Windows Server 2022. Your expertise in managing user access and advanced security features will be invaluable to ...

    $654 (Avg Bid)
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    I'm in need of a skilled professional to configure my Fusion PBX system to implement direct call routing. Key Requirements: - The system is currently cloud-hosted. Prior experience with cloud-hosted PBXs is a plus. - I have between 1-10 phone numbers that need to be set up for direct routing. The ideal candidate for this project will have: - Relevant experience in configuring Fusion PBX systems. - Strong understanding of direct routing in PBX systems. - Prior experience with cloud-hosted PBX systems.

    $122 (Avg Bid)
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    2 bids

    I am looking for an Asterisk/SIP expert to help me configure a SIP trunk. Specific tasks include: - Configuring the SIP trunk on my Asterisk server - Assisting with troubleshooting any issues that arise during the setup process Requirements: - Expertise in Asterisk and SIP configuration - Experience with setting up SIP trunks - Familiarity with troubleshooting Asterisk setups Additional information: - I already have a SIP provider - Ongoing maintenance assistance will be required after the SIP trunk has been configured.

    $179 (Avg Bid)
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    We are in need of a reliable server admin to oversee and manage an ongoing project on an as-needed, hourly basis. The server is running on Linux, and we are looking for someone who can handle server maintenance, software updates, security monitoring, and ensure HIPAA compliance. Key Responsibilities: - Server Maintenance: Routine maintenance tasks to keep the server running smoothly. - Software Updates: Ensuring all software on the server is up to date. - Security Monitoring: Regular monitoring of server security and timely response to any potential threats. - HIPAA Compliance: Ensuring the server is compliant with relevant regulations. Ideal Skills and Experience: - Proficiency in managing Linux servers - Experience in cPanel and CHM - Familiarity with Linode/Akamai Hosting and - Stron...

    $19 / hr (Avg Bid)
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    I need help to Update a Server with Centos 7, WHM and cpanel to Centos Stream 9, i Cant give SSH access, I need the necessary commands to do the migration here

    $63 (Avg Bid)
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    I'm in need of a highly skilled systems administrator well versed in Windows and Linux. The tasks I need assistance with are network management, regular system upgrades, and ongoing security monitoring. For this role, experience in: - Managing Office 365 - Managing Microsoft Intune - Managing the Windows Server - Making sure backups are running properly. - Testing backup restores - VMware server patch updates. - Implementing system upgrades on a regular basis would be highly ideal. Proactive, attention to detail and excellent problem-solving skills are key qualities I'm looking for in a professional for this task. This is a monthly job you will do within a specific time frame of the day.

    $666 (Avg Bid)
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    I need professional help to setup and configure a CentOS server. The server is meant for web hosting services and cPanel is the preferred control panel. Ideal qualifications would include: - Extensive experience in server setup and configuration - Proven skills in CentOS and cPanel - Aware of best practices for web hosting services Your responsibilities: - Install CentOS on the server - Setup the server for web hosting - Install and configure cPanel for use with the server

    $30 / hr (Avg Bid)
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    57 bids

    I'm in need of a skilled professional to configure my Fusion PBX system to implement direct call routing. Key Requirements: - The system is currently cloud-hosted. Prior experience with cloud-hosted PBXs is a plus. - I have between 1-10 phone numbers that need to be set up for direct routing. The ideal candidate for this project will have: - Relevant experience in configuring Fusion PBX systems. - Strong understanding of direct routing in PBX systems. - Prior experience with cloud-hosted PBX systems.

    $12 / hr (Avg Bid)
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    4 bids

    This project involves harnessing the power of AWS Redis cache system. As the ideal candidate: - You possess an in-depth understanding of AWS elasticache system. - You have experience building robust cache systems, particularly using Redis. - Proficiency in software development within the AWS ecosystem is crucial. The project's success hinges on effective integration of AWS services with a Redis cache system. Understanding the nuances of scaling, data persistence, and caching in a cloud environment will be beneficial. It's an opportunity to leverage your skills and make a significant impact. Your role will be essential to ensure optimized use of AWS resources and the stability of the cache system.

    $19 (Avg Bid)
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    9 bids

    I'm currently facing potential malware attacks causing unexpected slowdowns, particularly affecting my website load times. Hence, I'm in urgent need of a knowledgeable cyber security professional who can identify and rectify issues within my server files. Key Responsibilities: - Investigate the root cause for the slowdown of the website load times - Pinpoint potential malware in server files - Advance and fortify the security system to prevent future occurrences Ideal Skills: - Proficiency in cybersecurity - Solid understanding of server operations, particularly SQL - Experience in malware detection and prevention Your task: Use your expertise to bring back operational efficiency and bolster my domains server's security. If you can catch the malware predator and resto...

    $152 (Avg Bid)
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    I'm in need of an experienced Network Engineer to assist us in designing, implementing, and maintaining our network infrastructure. The primary goal is to ensure smooth operations and security of our network. Key Responsibilities: - Design and implement network solutions, with a particular focus on VPN (Virtual Private Network) setup. - Regularly maintain and optimize network infrastructure to ensure it meets our operational and security standards. - Troubleshoot and resolve network issues as they arise. Ideal Skills and Experience: - Proven experience as a Network Engineer, with a strong background in designing and maintaining network infrastructure. - Specific experience with VPN (Virtual Private Network) setup is highly desirable. - Deep understanding of networking protocols, TCP...

    $40 (Avg Bid)
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    12 bids

    Greetings! I am in need of a dedicated full-time system administrator in the field of Information Technology. The right candidate has a passion for managing, protecting, and upgrading system networks in an IT environment. Requirements: - Deep understanding of system administration and associated responsibilities - Proficiency in providing technical support and server maintenance - Experienced in diagnosing and resolving hardware, software, and networking issues - Ability to lead software and hardware installation and upgrade projects - Expertise in applying IT solutions that increase operational efficiency Experience: - Previous work in a similar role would be highly valued - Proven experience as a System Administrator, Network Administrator, or a similar role in an IT department Skills...

    $563 (Avg Bid)
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    14 bids

    I'm in need of an AWS expert to set up EC2 instances and S3 storage for my project. Key Responsibilities: - Implement EC2 Instances: - Please note that I haven't specified the exact requirements for the instances, so your experience and expertise in setting up versatile EC2 instances will be highly valued. - Configure S3 Storage: - I'll be storing various types of data on S3 - Documents, Images, and Videos. Your task will be to set up the storage in a way that is efficient, secure, and easily scalable. Ideal skills: - Proficiency in AWS services, particularly EC2 and S3 - Experience in setting up EC2 Instances to meet varying requirements - Expertise in configuring S3 Storage for different data types - Understanding of security and scalability best practices in AWS ...

    $100 (Avg Bid)
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    33 bids

    I'm seeking a knowledgeable AWS cloud engineer to help with my project. Your expertise will be vital, as I need assistance with either setting up a new AWS environment or optimizing an existing one. Ideal Skills and Experience: - Proven experience with AWS services, particularly EC2, S3, and VPC - Familiarity with both setting up and optimizing cloud environments - Ability to analyze and recommend improvements for cloud infrastructures - Strong communication skills and the ability to explain technical concepts to a non-technical audience Please provide examples of your past AWS cloud engineering work in your bid. Thank you!

    $134 (Avg Bid)
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    26 bids

    I'm currently facing difficulties with the recovery of Bacula backups on CentOS in a vnc session. The version of Bacula I am using is unspecified, so applicants should be experienced with various Bacula versions. Ideally, the freelancer should: - Be proficient in Linux, particularly CentOS - Have expertise in Bacula backup and recovery - Have experience working within vnc sessions Your primary task will be to help me locate and restore Bacula backups.

    $5752 (Avg Bid)
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    I'm looking for someone to assist me with setting up new DNS records to enable email services for my domain. The primary goal of this project is to make sure the domain is properly configured for email services. The ideal candidate for this job should have experience working with DNS records and email systems. It would be a plus if you have experience with the specific DNS service that I'm using.

    $49 (Avg Bid)
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    I'm in need of a specialist in MongoDB who can effectively troubleshoot and resolve configuration errors that I've encountered during its reinstallation on my Ubuntu Apache server. I'd appreciate bids from candidates who, at a minimum, possess the following qualifications: - Expertise in MongoDB installation, setup, and troubleshooting - In-depth knowledge of Ubuntu Apache server management - Strong experience in handling configuration-related issues - Bonus: Understanding of file path, authorization, and networking issues, as the specific type of configuration error wasn't determined Please be ready to detail your relevant experience and strategies for resolution. Thanks!

    $109 (Avg Bid)
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    I need a skilled professional who can create a Debian package (".deb") specifically targeted for the Ubuntu and Debian operating system. Key Requirements: - Creation of a Debian package specifically for Ubuntu - Understanding of Debian packaging standards Your role would involve compiling the source code and bundling it into a .deb package that can be easily installed on Ubuntu and Debian systems. Please only apply if you have prior experience with Debian packaging.

    $176 (Avg Bid)
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    20 bids

    I'm new to Azure networking and looking for an experienced professional to help me set up a virtual network. Key Requirements: - Establishing a virtual network on Azure - Enabling connectivity with on-premise networks Ideal Skills and Experience: - Proficient in Azure networking - Experience with setting up virtual networks - Knowledge of on-premise network connectivity - Excellent problem-solving skills to navigate my beginner-level questions

    $215 (Avg Bid)
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    33 bids

    need a person with Azure Network Engineer Associate certificate

    $228 (Avg Bid)
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    I'm currently running on Windows Server 2019 and am in need of a certified TruNAS professional to manage my network and join the Truenas to the domain. Your responsibilities will include the following: - Configuring and managing AD and/or the Truenas server side. - Ensuring seamless integration with existing infrastructure. You need to have hands-on experience with Windows Server 2019 and proficient skills with managing TruNAS networks. Full understanding AD protocols is paramount. Understanding the importance of system availability and data protection will be crucial to this role.

    $224 (Avg Bid)
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    Secure Email Account Creation 14 hours left
    VERIFIED

    I want to create a secure email account predominantly for sending and receiving emails. Requirements: - Capable of sending and receiving emails. - Needs a two-step verification process to enhance security. Ideal Candidate: The best fit for this project would be a developer well-versed in online security measures in addition to email systems.

    $8 / hr (Avg Bid)
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    I'm in need of an AWS expert to set up EC2 instances and S3 storage for my project. Key Responsibilities: - Implement EC2 Instances: - Please note that I haven't specified the exact requirements for the instances, so your experience and expertise in setting up versatile EC2 instances will be highly valued. - Configure S3 Storage: - I'll be storing various types of data on S3 - Documents, Images, and Videos. Your task will be to set up the storage in a way that is efficient, secure, and easily scalable. Ideal skills: - Proficiency in AWS services, particularly EC2 and S3 - Experience in setting up EC2 Instances to meet varying requirements - Expertise in configuring S3 Storage for different data types - Understanding of security and scalability best practices in AWS ...

    $380 (Avg Bid)
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    46 bids

    I'm in need of a skilled freelancer to help me with a specific task. Here's what you need to know: - The task primarily involves installing a Cloudflare certificate on a CentOS server running Apache. It's crucial to have a good understanding of both Apache and CentOS to successfully complete this task. - Having root access is essential, as it's required for the installation process. - I currently do not have any SSL/TLS installed on my server. The task specifically involves installing a Cloudflare certificate. Ideal skills for this job include: - Strong proficiency in Apache - Experience with CentOS - Prior experience installing Cloudflare certificates - Good knowledge of SSL/TLS protocols and practices - Ability to work with root access on servers Please only ap...

    $22 (Avg Bid)
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    I'm in need of expertise to manually install domain-validated SSL certificates for my domain and its five running ports of Node.js. The following outlines my requirements: - Install SSL certificates on each of the five Node.js ports manually. - The SSL certificate to install should be of 'Domain Validation' type. This project requires: - Strong knowledge and experience in SSL certificate installation. - Familiarity with Node.js and its ports.

    $23 (Avg Bid)
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    I already have postfix dovecot setup and looking for someone who can help on email forwarding on the same setup

    $16 (Avg Bid)
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    10 bids

    Install ssl certificate on centos 7 for domain

    $21 (Avg Bid)
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    As a cybersecurity officer, I'm seeking to significantly enhance the security measures of my server and cloud-based systems. Here are the project's requirements: - Implementing a zero trust network access on both system types to reduce the possibility of unauthorized access. - Proven experience on similar projects would be highly valued. - A particular focus is to be placed on uptime and reliability, as these systems are mission-critical. Ideal Skills & Experience: - Experienced cyber security professional - Deep understanding of zero trust network access - Proven track record with server and cloud-based systems - Excellent problem-solving capabilities in cybersecurity.

    $68 / hr (Avg Bid)
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    I described the error below in details. I'm sure the Server administrator can fix this issue in 1~2 hours. I'll pay $100 for this project. 1. I generated 2 csr files with command. openssl genrsa -out ~/certs/ 4096 openssl req -new -sha256 -key ~/certs/ -out ~/certs/ openssl genrsa -out ~/certs/ 4096 openssl req -new -sha256 -key ~/certs/ -out ~/certs/ 2. I got 2 swish certificates file from swish portal. I used one for singing and another for TLS communication between web system and swish platform. 3. I created p12 file from the reference. openssl pkcs12 -export -out -in -inkey 4. I used the following code. <?php $date = new DateTime(); $dateString = $date->format('Y-m-dTH:i:sZ'); $payload = [ "payoutInstructionUUID" => "...

    $53 / hr (Avg Bid)
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