System Admin Jobs

I’m looking for a Europe-based freelance IT engineer who can design, install, and maintain a reliable Local Area Network focused on routers and switches. The cabling is already in place, so I need someone who can come in, assess the existing environment, recommend any additional hardware if required, configure everything for optimal performance, and make sure the network scales easily as our headcount grows. Once the core is live I’d like occasional proactive maintenance and rapid, on-call troubleshooting when issues pop up. Familiarity with the major enterprise switch and router vendors is essential, and I’m happy to work with you on firmware standards, VLAN segmentation, and best-practice documentation. Deliverables I expect: • Detailed implementation plan (inclu...

I’m rolling out a new Local Area Network in several European offices and need the Wi-Fi layer deployed end-to-end. The scope centres on network setup and ongoing maintenance, with a focus on installing, configuring, and optimising access points so every workspace enjoys seamless coverage. You will start with a short remote planning call where I provide floor plans and current cable routes. From there, you’ll advise on access-point counts, placement, channel planning, and any controller requirements, then be hands-on on site (or coordinate local hands) to mount, patch, and bring the APs online. I’m happy to work with whichever enterprise hardware you’re most comfortable with—Cisco, Aruba, Ubiquiti UniFi, or similar—as long as the final network meets roam...

Our production file-share runs on AlmaLinux with Samba and I’m seeing sluggish transfer speeds that vary wildly across mixed file types. I’ve ruled out basic network congestion, so the bottleneck is almost certainly in the current Samba configuration. Here’s what I need: • Pinpoint and eliminate any configuration errors that could be throttling throughput. • Tune and related system parameters for consistently fast transfers of both large binaries and many small documents (the workload is truly mixed). • Document each change, why it was made, and the performance delta observed after the adjustment. Acceptance criteria: after your tweaks, average transfer speeds for a representative mixed-file batch must meet or exceed gigabit-line expectations,...

deployment, maintenance, evolution (Wi-Fi coverage extensions, commissioning of phone lines, etc) and site dismounting. ●will maintain, install, and extend wired and WiFi IP networks. This will mainly consist in: ● Participating site surveys (checking materials localization in various place in the camp) ● installing WiFi access points ● installing new switches or routers ● installing and plugging RJ45 wires ● installing and repairing Optical Fibber ● Implementation of the planned network structure ● Attaching APs and setting up a radio connection ● PRC support and implementation technician shall be skilled in: ● In networks installation (cf details in R22) ● Electrical tests (Earth resistivity, Ground Continuity) ● Optical fiber splicing or repairing – Optional ● IP...

I’m ready to move an existing site onto fresh infrastructure and need someone who can jump on a live screen-share with me right away. The work is entirely remote and centres on two providers—DigitalOcean and Vultr—running on dedicated instances. Here’s what has to happen during the session: • Spin up the new droplet / bare-metal node, harden it, and install the essential web stack. • Migrate the current website from its old environment with zero data loss and minimal downtime. • Point and verify DNS so the domain resolves correctly once propagation finishes. The operating system has not been finalised; I’m leaning toward Ubuntu, but I’m open to quick guidance if another distro makes more sense for performance or security. I’l...

Title: Developer Needed to Build Monitoring Platform Using EZVIZ API / SDK (Fixed Price Project) Description Hello, My name is Alex. I run a security company operating a monitoring center. We have many EZVIZ cameras (model H9C) installed across multiple client sites. Currently, these cameras are installed without any NVR on the client sites. We access them remotely using EZVIZ PC Studio, which is mainly designed for home or small installations and not suitable for professional monitoring. Important note: EZVIZ H9C cameras do not provide RTSP streams, so the system will likely need to use the EZVIZ Developer Platform (Cloud API / SDK). What we want to build We want a centralized monitoring platform where our operators can monitor cameras from many different sites. Ideally, the sys...

I need someone based in Russia who can walk me through, and if required remotely execute, the full setup of a VPS that will physically reside on Russian soil. My priority is simply getting the server online and production-ready; once it is running smoothly I will maintain it myself. We will start by choosing a reliable Russian provider, spinning up the VPS, and installing the usual stack (Linux + either Nginx or Apache, plus SSL, firewall hardening and basic monitoring). You will also take care of the initial configuration so the site loads over its domain the moment I point the DNS. Russian-specific compliance requirements, if any, should be covered as part of the setup. Deliverables • Active Russian-based VPS with root access handed over • Web server, SSL, firewall an...

Project Overview We are the team behind BookLover (), an audiobook streaming platform currently entering its production phase. To support the platform’s infrastructure, we have already provisioned a dedicated server with Hetzner, fully owned and controlled by our company. We are looking to establish a collaboration with a DevOps / Infrastructure services company that can take responsibility for the initial infrastructure setup, and potentially provide ongoing infrastructure management and monitoring. Our goal is to ensure that the platform runs on a secure, scalable and professionally managed server environment, capable of supporting large media libraries and streaming workloads. Infrastructure Details Server: Dedicated server (Hetzner) Operating System: Ubuntu Linux Primary u...

deployment, maintenance, evolution (Wi-Fi coverage extensions, commissioning of phone lines, etc) and site dismounting. ●will maintain, install, and extend wired and WiFi IP networks. This will mainly consist in: ● Participating site surveys (checking materials localization in various place in the camp) ● installing WiFi access points ● installing new switches or routers ● installing and plugging RJ45 wires ● installing and repairing Optical Fibber ● Implementation of the planned network structure ● Attaching APs and setting up a radio connection ● PRC support and implementation technician shall be skilled in: ● In networks installation (cf details in R22) ● Electrical tests (Earth resistivity, Ground Continuity) ● Optical fiber splicing or repairing – Optional ● IP...

I want my Ubuntu server configured as an OpenVPN host that lets me and a small team (fewer than ten users) connect securely from anywhere. The goal is straightforward: reliable, encrypted remote access without having to worry about manual key generation, firewall tweaks, or routing issues each time we add a new device. Here’s what I expect at the end of the job: • OpenVPN installed and running on my existing Ubuntu server (latest LTS). • User-friendly client configuration files or .ovpn bundles for up to ten devices, plus a quick guide so I can generate more later if needed. • Firewall and IP forwarding rules adjusted so traffic is tunneled safely while the rest of the server’s services keep working as they do now. • Basic security best practices ap...

We are looking for an experienced digital marketing and SEO professional to improve our website performance, optimize social media presence, and position our brand at the top of local market searches on Google and AI-powered search platforms.

CXUS Consulting is seeking an experienced SAP Basis consultant to set up a Technical Development & Testing (TDD) system of SAP S/4HANA 2025 on Google Cloud Platform (GCP). This is a three-client landscape (DEV/TST/PRD) optimized for embedded PP/DS functionality Scope of Work: System Setup & Installation Provision GCP VM and storage (consultant to recommend sizing) Install OS, HANA 2.0 DB, and SAP S/4HANA 2025 (latest support pack) Apply all pre-requisite and mandatory OSS notes Client Setup Three clients: DEV (100), TST (200), PRD (400) Activate PP/DS embedded with relevant Fiori apps Configure transport routes (DEV → TST → PRD) Integration Readiness CIF setup and RFC destinations configured Data Load Load pre-configured master and transactional data for PP/DS and ...

I need an expert to configure FreeRADIUS to act as a proxy. Requirements: - Support for PAP/CHAP authentication protocols. - Proxy to an LDAP backend for authentication. - Handle username and password user information. Ideal Skills and Experience: - Proficient in FreeRADIUS configuration. - Experience with LDAP integration. - Knowledge of PAP/CHAP protocols.

My cPanel-hosted domain is being blocked by Gmail with a 550-5.7.26 “authentication required” bounce. I have full DNS-zone access and need an expert to diagnose and correct the records so every check passes. Here are the exact protocols that must be fixed: • SPF • DKIM • DMARC Scope of work • Audit current DNS entries in cPanel/WHM and at the registrar. • Create or adjust the TXT/CNAME records for the items above, ensuring proper alignment. • Propagate changes and run live tests (e.g., Google Postmaster Tools, MXToolbox) until Gmail accepts the messages. • Provide a short hand-over note explaining what was changed and why. Acceptance criteria A test email from my domain must reach a Gmail inbox without errors, showing &ldqu...

Migrate CRM from Shared Hosting To VPS I’m ready to leave the limitations of shared hosting and run my CRM on a fresh VPS. All files, databases, custom modules, and SSL certificates need to make the trip with zero data loss and the briefest possible downtime. I will give you full access to both environments as well as any existing backup utilities. Here’s what success looks like to me: * a verified backup of the current CRM instance * a clean import on the VPS with correct database connections, file permissions, and SSL in place * basic security hardening (firewall rules, fail2ban or equivalent) * DNS or A-record switch once the new instance passes testing * a short walkthrough or written notes so I can repeat routine maintenance You should be comfortable with cPan...

I had NordVPN running smoothly on my new Ubuntu laptop for the first few days, but after tweaking some network settings on the machine the VPN refuses to reconnect. I would like someone to: • diagnose what I changed in Ubuntu’s network stack that is blocking NordVPN, • put those settings back into a clean, working state (command-line or NetworkManager), • verify that my home router is forwarding traffic or configured correctly so the VPN handshake is not being blocked, and • give me a short walkthrough so I understand how to avoid breaking things again. The job covers both the laptop and the router. We can work over a screen-share or SSH, whichever you prefer, as long as you explain each step. Experience with Ubuntu 22.04, NordVPN CLI/App, iptables or ufw,...

I need someone to connect to my AWS server over TeamViewer (or another live remote-control session) and create a new FTP user in the existing vsftpd setup. The server is running Nginx; the underlying OS wasn’t recorded, but you will see it once connected. What I need done: • Add a new FTP account that is locked to a single directory I will specify. • Ensure the account has read-and-write permissions inside that path while being unable to navigate elsewhere (proper chroot / jail). • Restart or reload vsftpd safely and confirm the user can log in, upload, download, and list files from an FTP client. I’ll provide the AWS console access, the directorypath, and TeamViewer credentials. Please be comfortable working live while I watch and able to explain what ...

I am rebuilding my virtual-infrastructure from the ground up and want an expert hand beside me while I do it. The core of the job is a Proxmox VE cluster that must run natively on IPv6 and use Ceph for shared storage. In parallel, three OPNsense firewalls need an in-depth configuration: one sits at the edge, the other two protect separate internal networks. Once the base is stable I also want help installing and tuning Univention Corporate Server and the Inuvika OVD platform inside the cluster, with proper DNS and certificate management throughout. Scope of work • Configure the Proxmox cluster, bring up IPv6 networking on all nodes, and integrate a Ceph pool that Proxmox can use for VM/CT storage. • Hard-en and document the OPNsense setup (rules, VLANs, routing, dual-stac...

I need an experienced infrastructure engineer to help me move my Fintech application off its current host and onto a server stack that is both noticeably faster and cost-efficient. My priorities are low-latency transaction handling, high uptime, and a predictable monthly bill. I am open to any major cloud vendor—LINUX, AWS, Google Cloud, Azure, or an equally robust alternative—provided the final choice can give me the best mix of performance and price. Here’s what I expect: • A short cost-vs-performance comparison of the leading options, with clear reasoning for the recommended platform. • A detailed migration plan that avoids downtime for end users. • Full execution of the migration, including configuration of security groups, autoscaling, backups, ...

Extensive DevOps Experience: Having 2 years of experience in AWS EC2, AWS S3, AWS IAM, RDS, Kubernetes, Docker, Terraform, and Ansible focused on building scalable and reliable infrastructures. Production Support Experience: Having 3 years of experience as a production support engineer on software applications. Automation & Efficiency: Skilled in automating deployment processes with Ansible and optimizing cloud setups for performance and cost savings. AWS: Cloud service platforms to deploy, manage, and scale infrastructure and services. CI/CD & Security Proficiency: Strong understanding of CI/CD pipelines and cloud security, with a proven record of reducing costs and ensuring successful project rollouts. Continuous Development & Innovation: Committed to learning new te...

We need a new junior-level developer with good experience in wireshark, GNS3 and other network installations We need work at low budget and for long term

The process requires significant technical expertise in server management, Java, database administration, and cloud services. Project Deliverables Server Deployment: Hybrid database approach Distributed Cluster We must separate: Edge Layer (Ingress + WebSocket) Application Layer (Spring Boot Core) Stateful Data Layer (Cassandra, PostgreSQL, Redis) Media + Search + Observability WebRTC Stack • Infrastructure: Are you planning to deploy on a our server • Version: need the latest official Signal Server (Java-based) • Customization : rebrand the app or simply run a private instance Configuration & Customization: Set up config .yml for production Optional branding or private instance configuration ________________________________________ Core System Requirements The offi...

Key Responsibilities: • Provide day-to-day onsite IT support for Desktops/Laptop, and peripherals. • Troubleshoot OS-related (Windows 10/11) and basic networking. • Handle software installation, configuration, patching, and updates. • Provide first-level support for MS Office 365 (Outlook, Teams, SharePoint Online). • Support users with Active Directory (AD) activities. • Diagnose HW problems and escalate to vendor. • Basic support for mobile devices, VC/AV equipment, and network port activation (I/O to end-point). • Coordinate with remote teams or OEMs for specialized support cases. This is onsite role for Hyderabad ________________________________________ Technical Skills Required: • Experience in Windows 10/11, desktop/laptop hardware troubl...

After uploading a fresh set of files and reorganising the entire site structure on my Amazon Lightsail instance, every URL—including the homepage—now returns a 404. Nothing else on the server was changed, so I suspect the issue sits with the web-server configuration, .htaccess rules, or the Lightsail networking/DNS settings. Here’s what I need: • Diagnose why all pages are throwing 404s. • Correct the root cause—whether that’s a VirtualHost mis-match, missing index file, wrong document root, or rewrite rule conflict. • Verify the fix by showing the site loads normally over HTTP / HTTPS. • Send me a concise summary of what you changed so I can track it for future deployments. You’ll have full SSH access to the Lightsail instanc...

Project Title: Full Issabel 5 PBX Deployment: Installation, Trunks & Extensions Project Overview I am seeking a VoIP specialist to perform a complete installation of Issabel 5 on an AlmaLinux 8 cloud instance. Beyond the base installation, the freelancer will configure the initial telephony architecture, including SIP trunks for external connectivity and internal extensions for users. Detailed Scope of Work 1. Server Installation & Hardening Perform a clean installation of Issabel 5 on AlmaLinux 8 using the official net-install script. Configure Fail2ban and firewall rules to block unauthorized SIP and SSH attempts. Set secure passwords for the Linux root, MariaDB, and Issabel web admin. 2. SIP Trunk Configuration Connect the PBX to my chosen VoIP provider using a SIP trunk....

I need an expert to help recover database files from AWS EC2. Skills and experience needed: - Strong background in AWS, especially EC2 - Expertise in data recovery processes and tools - Experience with various database types on EC2 - Problem-solving skills and attention to detail - Ability to work within budget and timeline Please provide relevant experience and approach in your bids.

I have just opened a brand-new Leaseweb account and want to make sure everything is configured correctly before I begin hosting production workloads. At this stage nothing has been provisioned, so I need someone who knows their way around the Leaseweb control panel to walk me through the complete setup, spin up the first server, apply sensible security hardening, and leave me with clear notes on what was done and why. Typical touch-points will include picking the right plan, deploying an instance, setting up user access, SSH / RDP configuration, firewall rules, monitoring basics, and any tweaks you consider best practice for performance and reliability. I’m open to either Windows or Linux images, so your recommendation here will be welcome. The job is primarily about the initial se...

I need a complete, self-hosted email solution for a small business that I’ll be running on a Linux server (Ubuntu or CentOS—whichever you feel is best for the chosen stack). The key objective is to move away from third-party providers and gain full control over our mail, security, and data compliance. The specific mail-transfer agent is still open: Postfix, Exim, Mailcow or another proven alternative can be used, as long as the end result is stable, secure, and straightforward to maintain. What I expect from you: • A production-ready mail server configured with SMTP, IMAP/POP3, spam and virus filtering, DKIM, SPF, DMARC, and valid SSL/TLS certificates. • Simple webmail access and clear instructions so that I can add domains, users, and aliases without touching...

I need a skilled professional to install Windows Server 2025 and configure RDP and VPN. The VPN should allow multiple user connections. Requirements: - Install Windows Server 2025 - Configure Remote Desktop Protocol (RDP) - Set up VPN for multiple user connections Ideal Skills & Experience: - Extensive experience with Windows Server installations, especially 2025 - Strong knowledge of RDP and VPN configurations - Networking expertise to ensure secure and efficient multiple user connections

I need Ubuntu Desktop installed on my HP desktop. The installation should be smooth, especially considering my graphics card. Requirements: - Install Ubuntu Desktop - Handle graphics card setup during installation Ideal Skills and Experience: - Experience with Ubuntu installations - Familiarity with HP desktops and various graphics cards - Troubleshooting skills for any installation issues Please ensure the OS is ready to use post-installation.