Sidiney – Kubernetes, GCP, Terraform

Cloud-native infrastructure platform running production workloads on GKE, focused on reliability, scalability, security, operational efficiency, and developer enablement.

• Managed GKE clusters, ensuring 99.9% uptime, streamlining upgrades, and optimizing GCP infrastructure costs by 20% through resource scaling and optimization;
• Led the migration of 50+ workloads from GCE instances to GKE clusters, achieving a seamless transition with less than 1% downtime;
• Implemented PodDisruptionBudget across multiple workloads to enhance workload availability during maintenance;
• Led the implementation of cleanup policies for Artifact Registry, reducing monthly costs by 50% and preventing future exponential growth;
• Improved Helm charts, streamlining deployments;
• Reduced 502 errors by diagnosing and resolving critical misconfigurations in the Traefik Ingress Controller;
• Strengthened Kubernetes security by implementing Network Policies and Security Contexts;
• Integrated Prometheus and Thanos for monitoring and improving observability across all Kubernetes clusters;
• Leveraged ArgoCD to facilitate GitOps workflows and streamline preview environments for developers' PRs;
• Provided expert support to developers on Kubernetes deployments;
• Enhanced and maintained Terraform modules, ensuring efficient infrastructure automation and scalability.

Marketing measurement SaaS platform using data integration, attribution, and predictive modeling to analyze marketing performance and optimize media investments.

• Implemented Infrastructure as Code using Terraform to provision cloud resources and create or destroy short-term environments to reduce costs;
• Implemented GitOps using Argo projects to deploy and manage applications, keep images updated, and support progressive delivery;
• Administered and troubleshot AWS and GCP products used by the company;
• Managed Airflow and Kubeflow infrastructure to support Data Engineers and Data Scientists with their pipelines;
• Administered MongoDB and MySQL servers with replication;
• Created and maintained Ansible roles and playbooks;
• Increased resolution speed and reduced manual work by automating tasks using Bash and Python;
• Administered CentOS servers, including backup and recovery, performance troubleshooting, and updates;
• Set up and maintained CI/CD pipelines for infrastructure deployments and software releases, including security checks;
• Monitored servers and applications for observability.

Enterprise data infrastructure company providing storage, data management, and hybrid cloud solutions for large-scale enterprise and AI workloads.

• Supported and troubleshot enterprise storage and data management products for customers via email, phone, and remote sessions;
• Troubleshot Windows and Linux systems, storage, MySQL, and Wildfly;
• Kept customers informed of case status, next steps, and expected resolution timelines;
• Replicated customer environments in an internal lab using ESXI;
• Provided guidance to L1 Support;
• Created and maintained knowledge base articles;
• Reported design issues and bugs to the software engineering department;
• Responded to critical situations where L1 Support did not meet customer expectations.

HPC and AI infrastructure company delivering large-scale compute, storage, and cluster management solutions.

• Managed day-to-day communication with customers and provided prompt and accurate feedback on cases;
• Supported HPC clusters, ensuring availability and recommending the best solutions;
• Administered Linux systems, troubleshot issues, applied updates, and implemented new solutions based on customer requests;
• Automated tasks and internal reports using Bash, including backup scripts and large-file data filtering;
• Supported high-availability setups using pacemaker/corosync, performing fail-over events and troubleshooting;
• Supported job schedulers by adjusting configurations, troubleshooting errors, applying updates, and recommending settings to users;
• Administered MySQL databases, including data manipulation, backup and recovery, and troubleshooting;
• Troubleshot and supported high-speed networks and fabric managers;
• Identified and solved performance issues on clusters and networks using benchmark tests;
• Troubleshot and maintained Ansible playbooks to deploy TrinityX Cluster Management;
• Administered and troubleshot containers and Kubernetes clusters;
• Worked with Implementation Engineers to solve issues on new installations;
• Documented technical and internal procedures;
• Communicated with Development and Engineering teams to discuss and find solutions for new bugs.

IT infrastructure and managed services company delivering cloud, database, cybersecurity, and infrastructure solutions for enterprise customers.

• Developed Bash scripts for customer requirements, internal tooling, task automation, and monitoring workflows;
• Managed Linux environments and provided L3 support for customers, including business-critical environments such as hospitals;
• Performed proactive maintenance, system updates, backup and recovery, and handled escalations from L1 support;
• Delivered new infrastructure installations from initial design through service migration;
• Managed database environments, including installation, migration, upgrades, performance tuning, backup and recovery, maintenance, and standby operations;
• Supported customers with container adoption, including Docker setup, image creation, and troubleshooting;
• Managed Zimbra mail infrastructure, including installation, upgrades, support, and advanced customization;
• Managed and troubleshot AWS environments and led optimization initiatives that reduced monthly cloud costs by 30%;
• Supported Azure-based disaster recovery environments, including synchronization routines and failure simulations;
• Configured and maintained SonicWall firewalls, including migrations, access policies, routing, NAT, VPNs, backup and recovery, and firmware upgrades;
• Led a GitHub-to-GitLab migration, including testing and validation;
• Participated in on-call rotations supporting production environments.

Brazilian software company developing accounting and financial management solutions, including web, mobile, cloud, and automation tools for accounting firms and businesses.

• Provided internal technical support for hardware and infrastructure issues;
• Managed Linux environments, including proxy ACL configuration, Squid and SquidGuard integration, and firewall rules;
• Monitored systems and infrastructure to ensure availability and reliability;
• Managed and maintained MySQL databases;
• Supported and maintained virtualized environments;
• Managed Windows infrastructure, including Active Directory, Group Policy, and Remote Desktop services;
• Collaborated with cross-functional teams to design and implement infrastructure solutions supporting the company’s software products.