Sistemski administrator Jobs

My Zimbra installation has suddenly started dropping messages in both directions—nothing is reliably coming in or going out. I’m looking for someone who can jump straight into troubleshooting mode, sift through the logs, queues, and MTA settings, and pinpoint why messages are stalling or disappearing. Key details you should know: • The problem affects both inbound and outbound mail, so I suspect it could be DNS-related (SPF, DKIM, DMARC), queue corruption, or a misbehaving transport rule. • I have root and admin access ready for you as soon as we begin. • The goal is a clean bill of health: messages accepted, queued, and delivered without delay, with clear documentation of what was fixed so I can avoid a repeat. Deliverables 1. Root-cause analysis w...

I’m ready to launch a 10-seat outbound call centre and need a VICIdial professional who can take the project from zero to live calls. Your mission is to install and fully configure the latest stable version of VICIdial, optimise the server environment, integrate reliable SIP trunks that allow CLI override, and verify everything with live-call tests. Server and hosting I do not yet have hardware in place, so I’ll rely on your guidance. My preference is to run the system on a VPS; please specify the exact CPU, RAM, storage and bandwidth you consider safe for 10 simultaneous agents. If you feel a dedicated machine would offer clear advantages, outline those too and I’ll weigh the trade-offs. Core tasks • Fresh installation of the latest stable VICIdial release &...

We are looking for a freelance Infrastructure Engineer to provide onsite support at a client location for a one-day infrastructure activity. You will be the onsite engineer, working closely with a remote technical team that will handle configurations and validation. Responsibilities Rack, stack, cable, and power on infrastructure equipment including servers, switches, firewalls, desktops, and printers as per provided documentation Patch network and IT equipment following diagrams and instructions Connect console and management cables to enable remote access for the engineering team Perform basic health checks on desktops, laptops, and printers Verify network connectivity and test printing services Coordinate with the remote team throughout the activity Provide a brief end-of-day ha...

I own and I’m ready to let it go to the right buyer. I need a digital marketing sales professional who can actively pitch this premium asset to startups, established companies, and digital marketing agencies that will immediately grasp its value. The assignment is straightforward: identify qualified prospects, reach out through cold calls, targeted email sequences, and social media touchpoints, then move interested parties through the funnel until an offer is on the table. Every conversation should spotlight the domain’s outstanding SEO potential, instant brand recognition, and perfect market relevance for India’s booming search marketing scene. Core deliverables • Curated prospect list with decision-maker contact info • Outreach copy (email templates, call s...

I need the official open-source Java backed of our project deployed, configured, and ready for continuous delivery. The source code is stable; what’s missing is a production-grade environment that handles build, test, and roll-out with minimal manual touch points. And the job you have to do requires experience in the following tasks: Here is the flow I have in mind: 3-VPS hybrid DB with Cassandra/PostgreSQL/Redis, RabbitMQ + WebSockets, Docker, CI/CD, HTTPS endpoint, and APM). 1. Hybrid database approach Distributed Cluster. 2. Containerize the application with Docker and automate builds via Maven or Gradle. 3. Primary Databases for Chat History Cassandra (NoSQL) 4. Secondary Databases PostgreSQL (for users Metadata) on the codebase’s data model. 5. Backed Language: Sp...

I need help migrating DNS records and clearing my OneDrive system. DNS Migration: - Records: MX, CNAME, and TXT - Ensure minimal downtime, migrate GoDaddy to Ionos, and point GHL and WIX there. -SSL certificate for multiple domains on Ionos OneDrive Cleanup: - Delete unaccessible accounts - Give access to teams to existing accounts and future ones - We need moving to an exchange server; we need everyone on 365 accounts Experience in DNS management and OneDrive is essential. Please include relevant experience in your application. Backup knowledge is a plus.

My TrueNAS Scale box is already built, online, and accessible on my network. The next step is getting Plex installed cleanly—and I would like to start there before we move on to Nextcloud or Tailscale. Here’s what I need from you: • Install Plex on TrueNAS Scale, preferably using whatever method you feel is most stable for long-term maintenance (official app catalog, TrueCharts, Docker, etc.). • Configure it so that I can reach the server remotely with my existing Plex account. NAT rules or Tailscale can be part of the solution as long as remote streaming works reliably outside my LAN. • Point Plex to the media datasets already created on the pool, set the correct permissions, and verify libraries scan without errors. • Confirm hardware transcoding ...

I need a skilled network engineer to spend one full day at my client’s office acting as our hands-on field resource while my remote team drives the configuration work. Your focus will be the physical layer: • Rack and securely mount the new servers, switches, and firewalls exactly as outlined in our build guide. • Dress network and power cabling so everything is neat, labeled, and easy to trace. • Power up each device, connect the console or management interfaces, and confirm our remote team can reach them. • Run quick health checks—simple pings, basic connectivity tests, and a printer test page—to verify the environment is live. • Make sure every desktop and laptop joins the network without issues and that all printers can produce a clea...

I need a reliable, experienced Network Engineer to be my hands on the ground for a full working day at our client’s office. My remote team will handle all configuration; your role is purely physical deployment, basic testing, and real-time feedback so we can finish the build in one visit. You will arrive with the step-by-step build guide already in hand, rack and mount the servers, switches, and firewalls, dress the power and network cabling neatly, attach console or management leads, then power everything up so we can start configuring from afar. While we work remotely, you will run quick ping and connectivity checks, confirm that each desktop or laptop grabs an IP and reaches the internet, and send a printer test page to be sure the print queue is alive. Deliverables (end of day)...

I need a redesign the way I reach an on-prem Windows Server hosted in the United States from India. The goal is simple: have my thick-client application open as if it were local, with its required drive mapping intact, and without the painful lag I experience today through a traditional VPN + Remote Desktop session into a Hyper-V VM. I have chosen Microsoft Azure as the platform and may involve options such as Azure Virtual Desktop, Azure VPN Gateway, ExpressRoute, or any combination you feel will best deliver the lowest possible round-trip latency while preserving security. I am open to your architectural recommendations provided they keep the mapped drive requirement functional and transparent to the application. When you respond, focus on your experience delivering similar low-latency...

I have a fresh Proxmox installation that now needs to be turned into a production-ready virtualization cluster. The end goal is straightforward: host several public-facing services while keeping administration simple and repeatable. Scope of work • Provision 4-6 Ubuntu-based guests (mix of KVM VMs or LXC containers—whichever fits best per role). • Produce three reusable gold images: Web server template, Database server template, and Mail server template. Each must boot cleanly, auto-configure the network via DHCP or static values I supply, and be ready for apt updates. • Expose HTTP/HTTPS and SSH to the internet. You may rely on Proxmox built-in firewall, iptables/nftables, or an nginx/HAProxy reverse proxy—whichever you judge safest. All inbound rules sho...

I'm looking for someone who understands how to configure a GL-iNet GL-MT6000 (Flip 2) router to connect to and work through a foreign VPN. I need to understand what settings to use, which provider/hosting provider to use, and which package to choose to connect the VPN to the router. I also need to understand how to resolve potential leaks, stress testing, and so on. After connecting the router and installing the VPN, I need to make sure there are no issues that could reveal my current location, and that everything works reliably.

I need help getting a fresh Proxmox installation ready to host between four and ten Linux-based virtual machines. The physical server already has power and network in place; what’s missing is a clean, production-ready configuration. Here’s what I expect: • Install and update the latest stable Proxmox VE • Create 4–10 Linux VMs (Ubuntu preferred unless you suggest a better fit) with optimized CPU, RAM and storage allocations • Configure secure networking so each VM can reach the internet while remaining isolated from one another, and set up a reliable tunnel (WireGuard is ideal) for remote administration • Apply basic hardening: user roles, firewall rules, backups to an external target, and monitoring alerts • Provide concise documentatio...

I'm seeking an experienced DevOps engineer to set up AWS for my e-commerce application. The project involves initial setup only. Key Tasks: - Server Configuration on Amazon Linux - Database Setup - Security and Monitoring Setup Ideal Skills and Experience: - Strong expertise in AWS services - Experience with Amazon Linux - Knowledge in database management and security protocols - DevOps tools familiarity (e.g., Terraform, Ansible) - E-commerce application deployment experience is a plus Looking forward to your proposals!

I'm looking for an experienced Minecraft server setup specialist to create a robust server for more than 50 players. The server should include the following custom modes: oneblock, realm, and lifesteal. Key Requirements: - Setup of oneblock, realm, and lifesteal modes - Configuration for over 50 concurrent players - Ensure server stability and performance - Provide guidance on server management Ideal Skills and Experience: - Expertise in Minecraft server setup and configuration - Experience with custom game modes - Knowledge of server optimization for high player counts - Strong problem-solving skills and reliability Please share your relevant experience and approach to this project.

I’m looking to partner with an experienced IT consulting team that can take ownership of my organisation’s core infrastructure. The immediate priorities are a clean network setup and reliable, ongoing server maintenance. Here’s what I need: • Assess our current topology, then design and implement an optimised network architecture (switches, routers, firewall, VLANs, redundancy, basic security hardening). • Review existing physical and virtual servers, carry out any required remediation, and establish a proactive maintenance schedule that keeps performance and uptime high. • Produce clear documentation and brief knowledge-transfer sessions so my in-house staff can follow day-to-day procedures. If your company has a proven track record in network ...

Necesito ayuda para configurar el acceso de AWS S3 en mi aplicación Plane que está desplegada en un servidor Hetzner con arquitectura ARM64 (aarch64). Contexto: Tengo una aplicación Plane (self-hosted) corriendo en un servidor ARM64 Tengo un bucket S3 en AWS (región eu-south-2) llamado "coolify-tools" La aplicación muestra el error: "Access to the bucket 'coolify-tools' is forbidden. Check permissions" Ya tengo configurados IAM users, roles, policies y un Trust Anchor en IAM Roles Anywhere Lo que necesito: Diagnosticar por qué Plane no puede acceder al bucket S3 Configurar correctamente las credenciales de AWS en Plane (Access Keys o IAM Roles Anywhere) Verificar que los permisos de IAM están correctame...

deploying the official open-source backend components and integrating them with various third-party services for full functionality. • mainly our requirements our own infrastructure Self-Hosted with Custom Instance public rebranded messaging app. • Only people who have previously studied and worked on production-style Signal server architecture and structure should communicate • Those who have not previously studied and worked on production-style Signal server architecture and structure should not submit bid proposals. • The official source code is open-source and available on GitHub. • You only need to deploy and configure the Signal server only. The process requires significant technical expertise in server management, Java, database administrat...

Deseo contar con un servidor de correo Carbonio Community funcionando sobre Ubuntu. El VPS ya está provisionado con una instalación limpia de Linux; tu misión es: • Instalar la última versión estable de Carbonio Community, dejarla operativa con los servicios necesarios (webmail, calendarios, contactos, ActiveSync si corresponde) y crear un dominio de prueba para verificar el envío y la recepción. • Aplicar una configuración básica —puertos, certificados TLS, ajustes de DNS como SPF, DKIM y DMARC— para que el correo se entregue sin problemas de reputación. • Endurecer la instalación con foco específico en la seguridad del servidor de correo: reglas de firewall acordes, protecci&...

I’m running a Debian server and need the system language switched from its current setting to Ko-kr. Your task is to: • Reconfigure the server’s locale so all system messages, man pages, and default environment variables use Ko-kr. • Verify the change persists after a reboot and is applied for both root and regular SSH sessions. • Provide a brief set of commands or a script so I can repeat the process on future servers if needed. Please work directly on Debian, avoid disrupting running services, and share a short confirmation (e.g., output of locale and localectl) once the change is complete.

I have a GPU instance with RTX 4090 and need to configure a setup for create videos

I have a fresh Ubuntu 22.04 VPS ready and I want a fully working Open Tibia server running version 13.x or newer. I am happy to go with either Canary or TFS—whichever you feel will get us to a stable, live server fastest. My own attempts stalled mainly at the client-connection stage, so the critical piece for me is having at least one client (official Tibia or OTClient, I am flexible) connect reliably to the server once it is online. What I need from you: • Compile or install the chosen engine on the VPS, configure it, and verify it boots without errors. • Walk me through the minimal config changes so I understand what was done. • Provide a working client package—or clear instructions for obtaining and patching one—that logs straight into the serve...

I’m looking for an online tutor based in India who can guide me through intermediate-level administration of both Linux and Windows Server environments. On the Linux side I want practical, session-based coaching in system administration, security and firewall management, and shell scripting. For Windows Server, the focus should be Active Directory management, server configuration and deployment, plus security and patch management. Each topic needs to be demonstrated live, with time for me to replicate the steps on my own lab machines during or immediately after the call. We can meet on Zoom or Google Meet for 2–3 hours a week, preferably evenings or weekends. Deliverables • A structured lesson plan that maps out the sequence of sessions • Recordings or sess...

Necesito implementar encriptación de datos en un servidor Linux para proteger exclusivamente archivos y documentos. Mi objetivo es contar con una solución sencilla y funcional que deje los ficheros cifrados en reposo sin complicar el resto del sistema. Lo que espero recibir: • Revisión rápida del entorno (distro y versión) y selección de la herramienta adecuada — por ejemplo LUKS, GPG o eCryptfs. • Guía paso a paso (o script básico) para instalarla, configurarla y probarla. • Instrucciones claras para añadir nuevos archivos al volumen/contenedor cifrado y para realizar copias de seguridad igualmente protegidas. • Documento breve con comandos clave y cómo revertir cambios si fuera ne...

We need an expert Odoo + DevOps engineer to migrate our existing Odoo 18 environment from to a Quebec-based private cloud. This project involves strict compliance, hardened security, and zero-data-loss migration. What You’ll Do Provision production & staging servers in Quebec Harden Ubuntu (firewall, Fail2ban, SSH, auto security updates) Deploy Odoo 18 Enterprise with Nginx, SSL/TLS, secure headers Configure PostgreSQL (encryption, tuning) Migrate database, filestore, and ~13 modules from Ensure full functionality across Accounting, CRM, HR, Sales, Inventory, Website, Manufacturing, etc. Implement encrypted daily backups (30-day retention) Provide DR and technical documentation Support testing and final production cutover Experience working in environments aligned with: Law...