Ronald Carvalho

DevOps Engineer

About Me


Experiencia no mercado há 5 anos atuando diretamente com tecnologias de sistemas distribuídos, tecnologias essas de container, orquestração de container com Kubernetes, implantação de fluxos de CI/CD, implantação de abordagens de Infraestrutura como código(IaC), aplicação de técnicas de monitoramento, implantação de malha de serviços utilizando Istio + gRPC e também na atuação direta em difundir a cultura DevOps dentro da organização, dando o suporte ponta a ponta a fim de atingir as metas da organização por meio de fluxos eficientes para a melhoria contínua no ciclo de desenvolvimento de software.


5 years experienced working directly with distributed systems technologies, container technologies, container orchestration with Kubernetes, implementation of CI / CD flows, implementation of infrastructure approaches such as infra as code(IaC), application of monitoring techniques, implementation of a service mesh using Istio + gRPC and also in direct action in spreading the DevOps culture within the organization, giving end-to-end support in order to achieve the organization's goals through efficient flows for continuous improvement in the software development cycle.


Ferramentas utilizadas / Tooling:
Container Runtimes/Technologies: Docker, ContainerD, Podman
Container Orchestrators: Swarm, Kubernetes, Nomad
Kubernetes: Cert-Manager, external-secrets, external-dns, replicator, rbac-manager, oauth2-proxy, ingress-gce, ingress-nginx, FluentBit/FluentD azure-managed-aad, rook, longhorn
Build Tools: Gradle, Bazel
Versioning: Azure DevOps, Gitlab, Github Enterprise, Phabricator
GitOps tools: Bazel, ArgoCD
Container Network interfaces (CNI): Flannel, Calico, Azure CNI.
Infrastructure tools: Terragrunt, Terraform, Ansible, Jsonnet, Helm, Atlantis
Monitoring tools: Grafana, Prometheus, Thanos, ElasticSearch, Kibana, Jaeger, Zipkin, Kiali
Programming Languages/DSLs: Java, Golang, Python, TypeScript, HCL(Terraform/Terragrunt), Starlark(Bazel), YAML(Helm, Ansible), toml, json, XML

Experience


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Zup Innovations

Senior DevOps Engineer/Platform Engineer - -

Cloud Specialist role working for one of the largest telecommunications companies in Latin America.
Zup Innovation, recently acquired by Itaú Unibanco, is an innovation-driven company that developed an Internal Developer Platform (IDP) called Stackspot, which is powered by AI.
In addition to product development, Zup also operates in the consulting space through its Professional Services division, serving clients across sectors such as banking and telecommunications.

Ensure security compliance within a Kubernetes environment on AWS.
Develop SLOs and SLIs for infrastructure, enabling the implementation of SRE golden signals.
Led a zero-downtime migration between different AWS accounts.
Responsible for securing cloud access by applying IAM best practices, network segmentation, and implementing SSO and OAuth2 technologies to improve auditability and traceability (using tools such as oauth2-proxy, Dex IdP, and Keycloak).
Drive DevOps practices across multiple development teams.
Troubleshoot VPN protocols such as OpenVPN and StrongSwan (including IKEv2 and IPsec tunnels).
Continuously research and introduce new tools, methodologies, and best practices to enhance DevOps workflows.
Conduct technical interviews.
Participate in the code review process, including approving changes and suggesting improvements.
Backend development in Go and TypeScript.

Docker Kubernetes AWS Azure EKS Stackspot EDP ArgoCD Bash/Shell TypeScript GoLang Terraform Terragrunt Linkerd
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Liferay Cloud

Middle DevOps Engineer (IV - V) - -

Member of Liferay's Cloud Infrastructure team, responsible for maintaining the PaaS and SaaS environments powering Liferay Experience Cloud and Liferay Experience Cloud Self-Managed.
These products run on top of Kubernetes, enabling both self-managed and multi-tenant deployments of the Liferay platform for customers.

Responsible for managing multiple Kubernetes clusters across key regions in North/South America, Europe, and Asia on Google Kubernetes Engine (GKE).
Maintain and improve the Internal Developer Platform (IDP) for platform engineering using ArgoCD, Helm, Terraform, and Terragrunt, enhancing delivery agility and security.
Ensure cloud access security through IAM best practices, network segmentation, and the implementation of SSO and OAuth2 technologies to improve auditability and traceability (tools include oauth2-proxy and Teleport).
Conduct Disaster Recovery (DR) tests periodically — simulating scenarios such as cluster failure, storage loss, and data loss — using Velero, GKE, and Cloud Storage.
Troubleshoot VPN technologies like OpenVPN and StrongSwan, including IKEv2 and IPSec tunnels.
Advocate for and implement DRY principles to improve maintainability of infrastructure-as-code.
Contribute to open-source IaC tools and improve automation using Atlantis with Terragrunt and Terraform.
Continuously research and introduce new tools, methodologies, and DevOps practices to elevate the engineering culture within Liferay’s cloud platform teams.
Deliver internal presentations during summits to share knowledge and promote best practices.
Support team members in task execution and professional development.
Participate in code review processes, suggesting improvements and ensuring code quality.

Docker Kubernetes AKS GKE Atlantis ArgoCD Jenkins Bash/Shell TypeScript Python Atlantis Terraform Terragrunt Google Cloud Azure YAML
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Stone

Middle Site Reliability Engineer - -


Sustaining the product on Azure's public cloud.
Participating in the interview process.
Suggesting new practices for logging and monitoring

Python Terraform Ansible Linux Windows Server F5 Big IP Azure Kubernetes - AKS
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Acqio

DevOps Engineer (Junior - Middle)- -

Acqio is a fintech for payments industry, Acqio works in a successful franchise model which their franchisees spread their POS across the country
I worked on the first DevOps/SRE team focusing on creating the first kubernetes infrastructure for non-pci services hosting backend services for the Acqio's customers platforms and mobile apps

Activities:
Designed and implemented the first Infrastructure as Code (IaC) framework using Terraform to manage all provisioned Azure resources.
Utilized Helm for managing Kubernetes manifests and release workflows.
Led the adoption of Kubernetes for container orchestration, improving product reliability, scalability, and security.
Successfully introduced and led the first service mesh implementation for gRPC services using Istio.
Advocated for and helped disseminate DevOps culture across engineering teams.
Embraced Trunk-Based Development to ensure deterministic and idempotent builds across the entire codebase.
Bazel (Starlark) Terraform Ansible Linux Jsonnet Istio BuildKite Azure Kubernetes - AKS
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ISI-TiCs - Instituto Senai de Inovação para Tecnologias da Informação e Comunicação

Intern DevOps Engineer - -

The company was in the implementation phase of the DevOps culture and i took this opportunity to lead the choice of tools that could enhance the development lifecycle of this company.
I helped the company to adhere DevOps practices while i was discovering at same time, aiming to follow good development practices such as 12factor, DRY for infrastructure and configuration management tools.
I was responsible to configure and maintain production workloads.
i had the opportunity to work on elaborating the first SDLC proccesses to suit good git practices, containerization practices, config mngmt.
Also have used Ansible to create a boilerplate for EC2 configurations and also installing packages across multiple machines.
Contributed on terraform code helping to import all resources on AWS to be managed on terraform.
Docker & Docker Swarm Rancher Shell Python AWS Jenkins BitBucket & Jira

Education / Training


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UniFBV Wyden

Computer Science - -

Proposta de entrega contínua para aplicações baseadas em arquitetura de microsserviços no kubernetes

CONTINUOUS DELIVERY PROPOSAL FOR MICROSERVICE ARCHITECTURE BASED APPLICATIONS ON KUBERNETES

Score 9/10

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