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I started with BeOS in 2002, because of a friend, who showed me something other than Windows, Always I worked repair PC & Laptops. Now I have more 10 years of experience in Server Linux. I can manager servers dedicated, servesr VPS, servers shared, etc. Setup and management you server; Apache/Nginx/Tomcat. SMTP Postfix, POP/IMAP Dovecot. FTP Vsftpd, Proftpd, Pure-ftpd-mysql. Dns Bind9, dnsmasq. File Server & printer Samba (dc-ac). Network administrator: isc-server-dhcp, openvpn, etc. Install and renew SSL certicate. All services on cloud; AWS, Azure, etc. Also website and E-mail migrations. ALL panels and web managers. Management all Linux distributions. Setup, security and optimization your server. __________________________ VERY IMPORTANT!!! “Hi I'm Matias, someone is trying to impersonate me, this account is the only one active and verified by freelancer! I DON'T USE ANY OTHER MEANS OF CONTACT, ONLY FREELANCER CHAT!” -----------------------------------------

Especialista en tecnologías Microsoft con certificaciones en Windows Server, Azure, Office 365 & Exchange Server. Constantemente me encuentro certificando actualizaciones de los productos que administro y sumando nuevos conocimientos. Mi desempeño diario consiste en relevar la infraestructura de clientes para diseñar la arquitectura y cronograma de tareas de los servicios a migrar de plataformas y la ejecución de los proyectos. Dictado de Workshops y capacitaciones sobre Office 365, Azure & Exchange Server Resolución de incidente de severidad 1 Productos administrados: Windows Server 2003, 2008, 2008 R2, 2012, 2012 R2, 2016 & 2019 Exchange Server 2003, 2007, 2010, 2013, 2016 & 2019 Active Directory, DNS, DHCP, WINS Office 365 Microsoft Azure (ARM Templates, Extension, DSC, Automation, Powershell, CLI, Iaas, Paas, Sql Server, Networking VPN S2S, P2S, Peering, Express route, Route Table, Network Security Group, Firewall, Application Gateway, Azure AD, Key Vault, App Services, Web App, Backup and site recovery, DNS, Virtual Machine, Scale Set, Load Balancer, Storage, File Share) Wsus, RDS, Azure Virtual Desktop VMware Esxi Hyper V Certificaciones Microsoft: Transcript Microsoft: https://learn.microsoft.com/en-us/users/gonzalo91/transcript/dql8pumrkl5ewpr

I design and build robust automation systems and scalable data extraction pipelines. With a background in Systems Engineering, I specialize in delivering structured, high-quality datasets and automation workflows that are reliable, maintainable and production-ready. My expertise includes: • Large-scale web data extraction • Multi-threaded & concurrent processing • Automation bots (Windows & Web) • Data normalization & transformation (ETL) • Database integration (PostgreSQL, MySQL, SQL Server) • API integrations • Advanced Python development I focus on performance, clean architecture and long-term reliability. If you need a scalable and professional solution — not just a script — let’s talk.

I'm a proficient and highly skilled SysAdmin with proactive support for every project and can provide innovative solutions and IT consulting for selecting the correct technologies to front your business, solve difficulties with the acquired tools in your infrastructure or deploy new and better-optimized services. In +10 years, I have created a great team to the front of every new project based on quality standards on code development for customized web services with front-end and back-end in a module way with adding new features for ongoing projects and creating new microservices for new hybrid cloud environments based and orchestration of containers (Docker and Kubernetes). How I can help you today? - Development of web services apps based on different kinds of languages like PHP, Javascript, Vue.js, JQuery, Python, Bash, and more. We can select the best code based on your requirements. - IT Infrastructure, solve issues in your network, installation of new services, security, and IT consulting. I'm the right person for clustering of 3G/4G internet and proxying for different purposes. - Web Hosting, is your WordPress/Woocommerce site going slow and need to optimize it? Just talk about it, I can deploy a fully optimized server-side configuration, with no intrusive plugins, and based on 3 levels of caché. Also includes the new HTTP3 and TLS 1.3, a new shield to protect your website security. 1. A front server for caching the static content, we can leverage the speed of your server resources and can expand the availability to process more users at the same time. 2. A better performance on the PHP process. 3. Optimizing the queries on your database. - IT Consulting * Deployment and management of virtualized environments based on hypervisors for Xen and KVM. * Management of servers with Linux (Debian, Ubuntu, CentOS, Rocky, Arch) and Windows OS, optimization, control of his security, configuration, and installation of new features based on your requirements. * Security, based OS firewalls like pfSense, OPNsense, IPFire, Endian, VLANs, VPN, Proxy, IPTables, more. * Web Hosting with all the required features like FTPS, DNS with failover, Email IMAP/POP/SMTP, Nginx/Apache, SSL Certificates. All the required stuff and some other solutions with a web panel for his management. Even I can help you with Plesk (Certified Professional), cPanel/WHM, CWP. * Backup services based on private storage in your own controlled environment or cloud storage on Google, AWS, Hetzner, OVH, and many other service providers for this purpose. Includes the right way to protect your data and avoid any critical issues to stay sure that your information is available when you need it.

I am a SysAdmin and PHP Dev with +7 years of experience managing Windows, Linux, multiples database engines and programming languanges and scripting.

Desarrollador PHP Senior & Experto en WordPress | 20+ Años de Experiencia ¿Tu sitio web está lento, tiene errores de código o se rompió tras una actualización? No pierdas tiempo ni dinero experimentando con juniors. Me especializo en entrar, detectar la falla y resolver problemas críticos de software de forma rápida y definitiva. Con más de 20 años en la industria, combino el desarrollo nativo en PHP con la optimización avanzada de WordPress para que tu plataforma funcione de manera fluida, segura y sin errores. En qué te puedo ayudar hoy mismo: • Mantenimiento y Troubleshooting SOS: Diagnóstico y reparación de pantallas blancas, errores de bases de datos (MySQL), conflictos de plugins y themes. • Optimización de Velocidad (WPO): Acelero tu WordPress o sitio PHP para mejorar la experiencia de usuario y el posicionamiento en Google. • Desarrollo a Medida: Modificaciones de código core, creación de funciones personalizadas en PHP/JS y conexiones de APIs limpias. • Migraciones y Servidores: Mudanza segura de sitios, configuración de hostings, correos corporativos y certificados SSL sin caídas de servicio. • Gestión de CMS: Soporte experto en WordPress, WooCommerce, Moodle y plataformas dinámicas. Mi stack principal: PHP, JavaScript, MySQL, Python (para automatizaciones), HTML5 y Tailwind CSS. Mi enfoque es simple: sin vueltas, comunicación fluida y soluciones que funcionan desde el primer día. Contame qué problema tiene tu sitio hoy y lo dejamos solucionado. ---------- Senior PHP & WordPress Developer | Troubleshooting & Speed Optimization Is your website slow, throwing code errors, or broken after an update? Don't waste time or money guessing with juniors. I specialize in diving into the code, pinpointing the issue, and delivering fast, permanent fixes. With over 20 years of hands-on experience, I combine raw PHP development with advanced WordPress optimization to keep your platform smooth, secure, and error-free. How I can help your project today: • Emergency Support & Troubleshooting: Fixing white screens of death, database errors (MySQL), plugin/theme conflicts, and malware cleanups. • Speed Optimization (WPO): Boosting loading times for WordPress and PHP sites to improve UX and Google rankings. • Custom Development: Core code modifications, custom PHP/JS functionalities, and clean API integrations. • Migrations & Hosting Setup: Seamless website transfers, secure hosting configurations, corporate emails, and SSL setups with zero downtime. • CMS & Platforms Support: Expert maintenance for WordPress, WooCommerce, and Moodle. Core Tech Stack: PHP, JavaScript, MySQL, Python (for task automation), HTML5, and Tailwind CSS. My approach is pragmatic: clear communication, no fluff, and code that just works. Let me know what’s wrong with your site today, and let's get it fixed.

Hi there! My name is Esteban. I'm an Electrical Technician and Electronics Engineer. The areas I like to work in are: Networking, Security & Programming. And I'm also interested in: PCB Design, Mathematics & Physics I have the equipment to produce up to 200x290 mm double sided PCBs, with the possibility to ship worldwide. If there is anything I can help you with, please let me know.

I am a Systems Engineer with more than 15 years of experience in the IT Area. I have vast knowledge in Virtualization, Network Administration, Server Configuration, Active Directory and user support in general. Let's get to work. Soy Ingnerio en Sistemas con más de 15 años de experiencia en el Area de IT. Poseo vastos conocimientos en Virtualización, Administración de Redes, Configuración de Servidores, Active Directory y soporte a usuarios en general. Pongámonos a trabajar.