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I am a professional passionate about technology, with experience in backend development and IT infrastructure. I began my career as an intern in Java development and MySQL database, working on code analysis and database migration for major retail clients. Afterwards, I worked for two years at Kyndryl as a systems administrator, focusing on infrastructure, technical support, and monitoring corporate servers. I speak English fluently and recently had an international experience in Portugal, which strengthened my global perspective and adaptability. I am currently undergoing a career transition: I work in the commercial area, but my goal is to return to the technology sector, especially in roles related to infrastructure, technical support, or backend development. I am always eager to learn and open to opportunities — whether onsite, hybrid, or remote. 🧠 Skills ● Systems Administration ● IT Infrastructure ● Java ● MySQL ● Linux ● Windows Server ● Technical Support ● Troubleshooting ● Fluent English ● Communication ● Teamwork ● Customer Service

Over 7 years of dedicated experience as a Linux administrator. Proficient in working on projects and expertly troubleshooting/managing various aspects, including: Linux distributions: Debian, Ubuntu, CentOS, AlmaLinux. Virtualization technologies: VMware, Proxmox, Xenserver, KVM/Libvirt. Hosting environments: WHM/cPanel. Cloud services: AWS EC2, RDS, S3, and Route 53. Network services expertise includes: DNS management: Record configuration, zone transfers, security enhancements (SPF, DKIM, DMARK) to ensure mail servers send/receive mail without triggering spam filters. VPN setup: Efficiently establish, manage, and troubleshoot OpenVPN and IPsec configurations. Mail server setup: Proficient in configuring Exim or Postfix, Dovecot, and MX records. Linux services mastery: Skilled in managing BIND9, Exim4, Postfix, Dovecot, OpenVPN, Squid, Apache2, Nginx, and Samba4. Proficient in deploying iptables and various packages for effective firewalling. Scripting capabilities: Adept with both Bash and Python scripting languages. Network troubleshooting: Skilled in using tools like Wireshark, TCPdump, and others for accurate diagnosis. Firewalls proficiency: Expertise with SonicWall, Sophos, FortiGate, NethServer, PfSense, and MikroTik. SSL certificates management: Able to generate certificates using Let's Encrypt and effectively manage them with Certbot. SSH hardening: Proficient in generating public/private keys for SSH and fine-tuning configurations. Users/groups management: Skilled in efficiently managing user accounts, groups, and permissions. Linux clusters: Competent in setting up and managing Linux clusters. Storage management: Experienced in managing storage with LVM technology.

I have 10+ years on company experience with Linux System Administration, Developer and DevOps mainly with Kubernetes and Cloud such as AWS and Google Cloud. SUMMARY: DevOps: GitLab CICD Cloud: AWS, GCP Container: Kubernetes, Docker, Rancher, Vault, Minio, Cert Manager, Harbor, Prometheus, Grafana IaC: Terraform, Ansible, Salt Web: Nginx, Traefik, JBoss/WildFly, Apache Programming: Java, PHP, Python, Bash, C, C++ OS: Linux, VMware, Debian, RedHat, Ubuntu, OpenSuse, FreeBSD, AIX Storage: Dell EMC, HP SAN: Brocade Backup: Commvault Network: Cisco, Extreme, DNS, DHCP, squid, radius Firewall: Checkpoint, iptables, snort Database: LDAP, AD/samba, Oracle 11g, PostgreSQL, MySQL, MongoDB Web: Nginx, Apache, JBoss/WildFly Monitoring: Zabbix, Nagios, Cacti

With over 25 years of hands-on experience in system administration and a profound understanding of GNU/Linux environments, I offer expertise in open source technologies that drive reliable and efficient systems. My proficiency extends to development on various programming languages, enabling me to craft robust solutions tailored to client requirements. Core Competencies: Systems Administration: Proficient in managing all aspects of the Linux operating system, including CentOS, Debian, Ubuntu, and Slackware distributions. Skilled in system optimization, security, and performance tuning. Software Development: Proficient developer with a focus on Perl, Python, PHP, C, C++, SQL, and JavaScript. Well-versed in Object-Oriented Programming (OOP) principles and application development for diverse platforms. Script Development: Adept at developing scripts in Perl, Python, Bash, and Lua for automation, integration, and system enhancement. Strong advocate for leveraging scripting languages for efficient operations. Database Administration: Extensive experience in administering MySQL/MariaDB, PostgreSQL, Oracle, SQLite, and Redis databases. Proficient in database optimization, replication, and backup strategies. Networking Specialist: Deep understanding of TCP/IP and OSI stack layers, with expertise in proxies, HTTP protocol, RADIUS, VPNs, VLAN, SNMP, netflow/ipfix, and BGP. Experienced in designing, implementing, and troubleshooting complex network infrastructures. Monitoring Architecture: Skilled in designing and implementing infrastructure monitoring solutions, including data gathering, processing, and analysis dashboards. Proficient in monitoring various network devices and systems across diverse environments. Web Hosting and Development: Proficient in web server hosting using Apache, Plack, Starman, and Flask, with expertise in HTML5, JavaScript, and REST APIs. Capable of developing dynamic web solutions in Perl, Python, Bash, or C. Professional Approach: I am committed to delivering tailored solutions that align with my clients' needs and exceed their expectations. My creative thinking and positive attitude ensure that challenges are met with innovative solutions, fostering long-term partnerships built on trust and reliability. Conclusion: With a comprehensive skill set and a proven track record of success, I am dedicated to providing exceptional service and driving continuous improvement in every project I undertake. Let's collaborate to transform your vision into reality and achieve unparalleled success.

Result-oriented IT Infrastructure professional with over 4 years of experience managing and stabilizing complex environments. Currently, I serve as a Technical Support Analyst at World Tecnologia, where I proactively monitor and manage systems using Zabbix, RMM, and MSP Manager . My expertise includes: - Server Administration: Full setup and maintenance of Windows Servers and virtualization using Hyper-V . - Networking & Security: Practical experience with MikroTik, routing, switching, and firewall configuration. - Infrastructure Strategy: Recently designed and implemented a TrueNAS Scale NAS server from scratch, featuring RAID 1 redundancy and secure remote access via Tailscale/WireGuard. - Identity Management: Proficient in Active Directory administration to ensure secure and organized team access. I am dedicated to ensuring zero downtime and high-level security for your business operations. Let’s talk about how I can stabilize and scale your IT infrastructure.

Skills / Knowledge: I work well with monitoring tools such as Zabbix and Grafana. I have a solid foundation in analysis and troubleshooting of Linux environments. I can create Python scripts to automate repetitive processes within my work environment. Intermediate knowledge of backup routines using Veeam.