Hire the Best CentOS Developers
in Brazil

I'm a backend developer with over 15 years of experience in building scalable and secure web applications, specializing in Ruby on Rails. I have solid expertise in Linux infrastructure, automation, and cloud platforms (AWS, Azure). I'm currently pursuing a PhD in Computer Science at UFPE, with a focus on distributed systems and virtual machine performance. I'm looking to contribute to challenging and purpose-driven projects.

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.

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’m a DevOps Engineer and co-founder of CloudUnlimited, delivering high-quality AWS, Kubernetes, Terraform, Docker, and CI/CD solutions. With 2,860+ Upwork hours, 100% Job Success, and $100k+ earned, I help companies build fast, secure, scalable cloud infrastructure that’s ready for real production environments. 👇 Hi, my name is Wendel Matavelli, nice to meet you. As a senior DevOps and cloud engineer, I specialize in designing, automating, and optimizing infrastructure for startups, SaaS products, and established companies looking to scale. My work focuses on improving reliability, increasing deployment speed, strengthening cloud security, and creating fully automated environments that reduce long-term operational costs. Together with my partner Victoria Ripardo, I co-founded Cloud Unlimited , a DevOps & SysOps service provider delivering end-to-end cloud architecture, infrastructure automation and CI/CD pipelines. I routinely partner with teams that need hands-on engineering mixed with strategic technical leadership. My experience covers the full ecosystem of modern cloud operations: - Amazon Web Services (AWS): EC2, ECS, S3, IAM, Lambda, Route 53, CloudFront, CloudFormation, RDS, etc. - Oracle Cloud, DigitalOcean, Microsoft Azure, Google Cloud Platform (GCP) - Kubernetes & container orchestration - Teamcity - Git - SQL/ NoSQL - Jenkins - DevSecOps - Linux (Ubuntu/RedHat/CentOS) - Serveless - Network Protocols - Apache, Tomcat and Nginx - Programming Languages (Python, PHP, NodeJS, Pearl) - Terraform / Infrastructure as Code (modular design, multi-env workflows) - Docker, image lifecycle management, container security - CI/CD pipelines (GitHub Actions, GitLab CI, AWS CodePipeline, ArgoCD, CircleCI) - Ansible, configuration automation, provisioning - Automated Tests - Cloud architecture - Cost optimization - Monitoring & observability (Prometheus, Grafana, ELK, CloudWatch) - Zero-downtime deployments, scaling strategies, migration plans Why clients hire me? - Strong production experience with complex and high-traffic systems - Fast communication, clear documentation, and reliable delivery - Ability to diagnose and fix deep infrastructure problems - Clean, future-proof cloud design that developers actually enjoy using - Mix of hands-on engineering + architectural decision-making - Proven performance on Upwork backed by thousands of hours and 100% JSS If you need a DevOps Engineer who can build a scalable AWS environment, automate your infrastructure, optimize Terraform workflows, or create a full CI/CD pipeline from scratch, I bring the depth and reliability that growing companies depend on. I’m always open to long-term collaboration, one-off projects, or ongoing DevOps support. My focus is simple: make your cloud faster, safer, and easier to maintain, so your team can move with confidence.

With nearly 20 years of experience on IT I have been exposed to multiple roles, from Backend Developer, System Administrator up to DevOps Team Lead and Cloud Architect. If you are looking for a reliable partnership to get skilled technical guidance, technical support and services, please let's talk and discuss your use case. I hold a Master Degree in Computer Science from one of the best universities in Brazil (Santa Catarina Federal University) as well have multiple cloud certifications, specially on AWS and Azure. Currently my main focus and expertise is on cloud infrastructure, ranging from account design, billing structures up to networking implementation and CI/CD pipelines. Strong focus and experience on AWS being AWS certified Professional Architect and DevOps Engineer I hold the right skills to support you on any AWS-related project. From networking design up to serverless I can guide you on best practices and well-architected patterns. Main technologies: - AWS EC2, S3, Lambda, Config, VPC, Opswork, CloudWatch, EKS, ECS, Fargate, API Gateway, WAF, ELB, ElasticBeanstalk, Lightsail, RDS, Aurora, Glacier, Codepipeline - Kubernetes - Docker - Gitlab - Azure - Virtual Machines, VNets, Storage acounts, SQL Server - vmware 6+ - Hyper-V 2012 R2+ - Linux: Debian, Ubuntu, Fedora, CentOS, Alpine - FreeBSD - Networking

I’m a Senior DevOps and Cloud Solutions Architect with over 7 years of hands-on experience helping startups and enterprises build secure, scalable, and cost-efficient infrastructures — delivered with excellence and no friction. I'm Top Rated Plus on Upwork with 100% Job Success, 14,000+ hours billed, and 59+ completed projects. I combine deep technical knowledge with a strong sense of ownership, clear communication, and focus on real business outcomes. What I deliver: - Infrastructure as Code (Terraform, CloudFormation, Ansible) - CI/CD pipelines (GitHub Actions, Jenkins, GitLab CI, ArgoCD) - Kubernetes clusters (EKS, GKE, AKS – multi-cloud & hybrid) - DevSecOps practices for compliance and security - Cloud architecture on AWS, Azure, and GCP Why clients hire me: I lead complex migrations, design high-availability systems from scratch, train teams, and automate operations that scale reliably. I don’t just build infrastructure — I build confidence and results. Whether you're launching your product, scaling your infrastructure, or modernizing legacy systems, I’m here to help you move faster, safer, and smarter. Let’s build something solid. Tech stack: Cloud Platforms Amazon Web Services (AWS): - Compute: EC2, Lambda, ECS, Fargate, Elastic Beanstalk - Networking: VPC, ELB/ALB/NLB, Route 53, CloudFront, Transit Gateway - Storage: S3, EFS, Glacier - Database: RDS (PostgreSQL, MySQL, Oracle), DynamoDB, Aurora - Security & IAM: IAM, Cognito, Secrets Manager, KMS - IaC & DevOps: CloudFormation, CodePipeline, CodeBuild, CodeDeploy, CodeCommit, CloudWatch, Systems Manager - Others: SNS, SQS, EventBridge, Step Functions, API Gateway, AppConfig Microsoft Azure: - Compute: Azure App Services, Azure Functions, Azure Container Apps, Virtual Machines, VM Scale Sets - Container & Orchestration: Azure Kubernetes Service (AKS), Azure Container Registry (ACR) - Networking: Virtual Network (VNet), Load Balancer, Application Gateway, Azure Front Door, DNS Zone - Storage: Blob Storage, File Storage, Data Lake - Database: Azure SQL, Cosmos DB, MySQL/PostgreSQL for Azure, Redis Cache - DevOps & IaC: Azure DevOps Pipelines, Repos, Artifacts, ARM templates, Bicep, Azure Monitor, Log Analytics - Security: Azure AD, Key Vault, Defender for Cloud, Managed Identities Google Cloud Platform (GCP): - Compute: Compute Engine, Cloud Functions, Cloud Run, App Engine - Containers: Google Kubernetes Engine (GKE), Artifact Registry - Networking: VPC, Load Balancer, Cloud DNS, Cloud CDN - Storage: Cloud Storage, Filestore - Database: Cloud SQL, Firestore, Bigtable, BigQuery, Memorystore (Redis) - DevOps & IaC: Cloud Build, Cloud Deploy, Deployment Manager, Config Connector - Security & Monitoring: IAM, Secret Manager, Cloud Monitoring, Cloud Logging, Cloud Armor Infrastructure & Automation Terraform, CloudFormation, Bicep, Ansible, Packer GitHub Actions, GitLab CI/CD, Jenkins, ArgoCD, CircleCI Helm, Kustomize, Docker Compose DevSecOps & Observability Prometheus, Grafana, Loki, ELK Stack CloudWatch, Azure Monitor, GCP Cloud Monitoring DevSecOps pipelines, Static/Dynamic Code Analysis (Snyk, Trivy, Checkov) Security baseline hardening (CIS Benchmarks, AWS SCPs) Languages & Scripting Python, Java, Node.js, Bash, PowerShell, YAML, Go (básico) Databases & Messaging PostgreSQL, MySQL, SQL Server, MongoDB, DynamoDB, Redis Kafka, RabbitMQ, SQS/SNS, Pub/Sub (GCP) Operating Systems & Web Servers Linux (Ubuntu, CentOS, RHEL, Amazon Linux) HAProxy, Nginx, Apache, Tomcat