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!

A partir das avaliações de 142,304, os clientes avaliam nosso System Administrators 4.9 de 5 estrelas.
Contratar System Administrators

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!

A partir das avaliações de 142,304, os clientes avaliam nosso System Administrators 4.9 de 5 estrelas.
Contratar System Administrators

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    16 trabalhos encontrados

    My Elasticsearch cluster has suddenly started returning blank responses. I’ve confirmed the indices and mappings are intact, so I’m convinced the fault lies in the current network configuration, even though nothing has been modified recently on my end. I need someone who understands routing, firewalls, and the way Elasticsearch nodes communicate over TCP/HTTP to jump in, trace the packets, and pinpoint the bottleneck. You should be comfortable running curl queries, checking transport and HTTP ports, reviewing DNS or load-balancer rules, and adjusting any mis-configured security groups or firewall rules if we discover them. The task ends when queries to the cluster return the expected JSON instead of an empty payload and you can clearly explain the root cause so I can avoi...

    €101 Average bid
    €101 Média
    18 ofertas

    I’m rolling out a new Wide Area Network and need a skilled network engineer who can take charge of the hardware side: rack-mounting, cabling, initial firmware loads, interface mapping and full device configuration. The logical design is already settled, so the priority is to translate that plan into a clean, production-ready build. You’ll be working with enterprise-grade routers, edge firewalls and layer-3 switches. Expect to: • Apply the agreed addressing scheme, routing protocols and VLAN structure directly on the gear • Integrate ISP hand-offs, test throughput and fail-over paths • Harden the devices with best-practice security settings and up-to-date images • Produce a concise hand-over package—running configs, topology diagram and rollback...

    €6 / hr Average bid
    €6 / hr Média
    12 ofertas

    I am investigating a series of Kubernetes issues inside my AWS EKS cluster while, in parallel, tightening overall protection for our Windows environment. At the EKS level I need clear, actionable troubleshooting that pinpoints why certain pods occasionally lose connectivity and how that behaviour cascades through the wider network. Packet-flow analysis, security-group review and any recommended Calico or CNI tweaks are all on the table; the end goal is a concise set of steps I can reproduce to keep the cluster healthy and resilient. On the workstation side my priority is “Sécurisation de postes de travail Windows et de réseau informatique”. The focus rests on our standard desktops and laptops (no Windows servers in scope right now). I want a straightforward harde...

    €18 / hr Average bid
    €18 / hr Média
    29 ofertas
    Configure USA VPN Router
    5 dias left
    Verificado

    I need my brand-new router set up with an OpenVPN tunnel that terminates in the United States so I can log in to my employer’s systems from Colombia. My minimum connection requirements are 40 Mbps download and 14 Mbps upload once the VPN is running; anything slower will not be workable for my remote-desktop software. Here is what you should know before we start: • Preferred protocol: OpenVPN (this is non-negotiable). • Config files: I don’t have any yet, so you will need to create or source them for a reliable U.S. endpoint. • Router management is done through a Windows interface. Deliverables 1. Working OpenVPN configuration installed on the router, showing a U.S. public IP. 2. Verified speed test screenshots proving at least 40 / 14 Mbps while conne...

    €138 Average bid
    €138 Média
    64 ofertas
    Windows Cloud Server Security
    4 dias left
    Verificado

    Looking for a company that can do managed services for servers, cloud for Windows and security. Professionals who monitor, manage, and optimize the servers, cloud, and networks — ensuring performance, security, and complete management for dedicated servers including VM's. our servers are generally issue free. we just need to make sure someone is watching since we cannot. So during our working hours if anything is slowing things down or server has speed issues or anything we will need someone to be on it, look and advise and fix and then update us and document it. I need this service on 3 servers hosted in the cloud to be watched. Of course regular maintenance, checks during our off hours, backups, monitoring & stuff like that will need to happen on a regular basis. ...

    €400 Average bid
    €400 Média
    48 ofertas

    Our small nonprofit needs reliable, on-call technical support focused exclusively on Windows machines. Day-to-day we handle most routine tasks ourselves, but when new software has to be installed or an existing program suddenly refuses to cooperate, productivity grinds to a halt. I’m looking for a patient, detail-minded professional who can step in remotely, diagnose issues quickly, walk staff through clean installations, and resolve troubleshooting tickets without disrupting our mission-critical work. Typical scenarios include: • Installing licensed applications, updates, or patches on Windows 10/11 desktops and a few laptops. • Fixing installation failures, missing dependencies, or lingering registry remnants after uninstalls. • Clarifying best-practice settings...

    €378 Average bid
    €378 Média
    37 ofertas
    Lifetime Free Windows VPS Needed
    3 dias left
    Verificado

    I am looking for someone who can supply a permanent Windows-based VPS or RDP account that never incurs a fee. The machine must offer at least 4 GB RAM, 200 GB or more of storage, and a full-duplex 1 Gbps connection. I will be running light-to-medium desktop applications on it and using it as a secure data-storage node, so consistent performance and uptime are essential. Because I access the machine remotely, please have standard remote-access tools already enabled and ready to go the moment you hand over the credentials. No credit-card activation, hidden renewal, or pay-as-you-go arrangement can be involved; I need a truly cost-free, always-on server that will stay online 24 / 7 for the lifetime of the hardware or service. Deliverables • Fully operational Windows VPS / RDP login...

    €23 Average bid
    €23 Média
    6 ofertas

    Need an experienced freelancer for E-commerce Store Management and Product Listing. ​Key Responsibilities: ​Upload products manually or in bulk with accurate details ​Write SEO-friendly product titles and descriptions ​Set up prices, categories, SKU, and variants (color/size) ​Optimize product images and resize as per store requirements ​Looking for accurate work with fast

    €194 Average bid
    €194 Média
    82 ofertas

    Projektausschreibung: Einmalige Migration einer Windows-Infrastruktur (Hyper-V) zu Linux Projekttitel: Freelancer / IT-Consultant für Migration von Windows-Umgebung (Hyper-V) auf Linux-Basis gesucht Einsatzort: Magdeburg / Hybrid (Remote & Vor-Ort-Einsätze nach Absprache) Projektdauer: Projektabhängig (einmaliges Migrationsprojekt) Start: Nach Vereinbarung Projektbeschreibung: Für ein anstehendes Migrationsprojekt bei einem Endkunden suchen wir einen erfahrenen IT-Infrastruktur-Spezialisten (m/w/d) mit tiefgehenden Kenntnissen in der Windows- und Linux-Welt. Das Ziel ist die Ablösung bzw. Migration einer bestehenden Windows-Server-Umgebung hin zu einer performanten und zukunftssicheren Linux-Infrastruktur. Die Migration soll ohne hohe Ausfallzeiten in ...

    €464 Average bid
    Local
    €464 Média
    22 ofertas

    I have an upcoming Azure administration interview and I’d like focused, one-on-one coaching to sharpen the areas that matter most: Azure infrastructure management, monitoring and security, and Azure DevOps. My current skill set sits at an intermediate level—I work with Azure regularly but need help turning day-to-day know-how into concise, interview-ready answers. I’m looking for a coach who can: • Walk through real-world scenarios and white-board style discussions that map directly to those three domains • Spot and close any knowledge gaps quickly • Provide actionable feedback after each session so I can keep refining between meetings If you use tools such as Azure Portal, Azure CLI, ARM/Bicep, Azure Monitor, Security Center or DevOps pipelines ...

    €4 / hr Average bid
    €4 / hr Média
    5 ofertas

    Day-to-day reliability and fast release cycles are critical for my product team, and our entire stack runs on AWS. I need an experienced DevOps engineer who can seamlessly discuss architecture details in both Mandarin and English while tightening our deployment automation and infrastructure management processes. The work centres on: • Designing or refining an end-to-end deployment pipeline on AWS. • Translating existing manual or semi-manual build steps into Infrastructure-as-Code and repeatable automation. • Establishing clear monitoring, alerting, and logging so issues surface before users notice. • Producing concise documentation and a hand-over walkthrough in both languages so future team members can pick up where you leave off. You’ll interact directly with...

    €19 / hr Average bid
    €19 / hr Média
    106 ofertas

    **Title: Looking for an AWS / DevOps Engineer for Website & CRM Deployment, Security, and Ongoing Support** I'm looking for an experienced AWS / DevOps engineer to help us take over and manage an existing business infrastructure consisting of multiple websites and a CRM hosted on AWS. The websites and CRM are being developed using Claude Code, and the code is close to deployment. We need someone who can guide us through the existing infrastructure, establish a reliable deployment process, and help us manage it independently. **Scope of work:** - Audit the existing AWS infrastructure and document the architecture. - Review IAM permissions, access security, networking, and secrets management. - Help establish development, staging, and production environments. - Configure or impro...

    €81 Average bid
    €81 Média
    65 ofertas
    Design AWS Service Architecture
    21 horas left
    Verificado

    I’m revamping my stack and need a clear, production-ready architecture on AWS. The core of the design must revolve around EC2, S3, and Lambda, with EC2 instances configured for auto-scaling, load balancing, and reliable backup-and-recovery. I want every decision—from instance sizing and Auto Scaling Groups to S3 bucket policies and Lambda triggers—captured in a diagram and accompanying documentation so I can hand it straight to my DevOps team. Here’s how I picture the engagement working: • Architecture blueprint: a high-level diagram (Visio, Lucidchart, or ) that shows VPC layout, subnets, security groups, Auto Scaling Groups, Elastic Load Balancer, backup flow, S3 storage tiers, and Lambda integrations. • Implementation notes: brief, step-by-step guid...

    €28 Average bid
    €28 Média
    38 ofertas

    # URGENT – Senior DevOps / Full-Stack Developer | Paid Technical Audit Within 24–48 Hours | NEVIE-GLOBAL Project: NEVIE-GLOBAL – France & United Kingdom IMMEDIATE START REQUIRED – PAID AUDIT – MAXIMUM 48-HOUR DEADLINE We are urgently seeking an experienced, reliable Senior DevOps / Full-Stack Developer to take over and finalize an existing technical deployment and integration project. NEVIE-GLOBAL operates through two companies in France and the United Kingdom. Our websites are already developed or partially deployed. We do NOT want to rebuild everything from scratch. We need a professional capable of rapidly analyzing our existing infrastructure, identifying technical blockers, completing the remaining integrations, and preparing both websites for f...

    €50 Average bid
    €50 Média
    24 ofertas

    I’m expanding a GoHighLevel-based business with sites and need a dedicated partner who can own both the SEO roadmap and the everyday admin work inside GHL. The immediate mission is to push our pages up the rankings. My biggest pain point is on-page SEO, and phone registrations so you’ll start by reviewing content, keywords, meta-tags and internal links across the whole site builder. From there, we’ll map new keyword clusters, adjust page structures for better crawlability, and monitor results through GHL analytics and Search Console & SE Ranking. Content creation is part of the job. You’ll draft and publish fresh blog posts, polish product and service descriptions, and fine-tune landing pages so every piece lines up with our target phrases. I move fast, so th...

    €324 Average bid
    €324 Média
    140 ofertas

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

    €92695 Average bid
    Destacado
    €92695 Média
    37 ofertas

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