Juam Sousa — Sr DevOps/Cloud Engineer | AWS Solutions Architect Professional & CKA - Certified Kubernetes Administrator

Sr DevOps/Cloud/SRE Engineer - JS Cloud (Cloud Infrastructure and AWS Strategy Improvement)

Duration: November 2024 - Present

Summary: Led initiatives to improve cloud infrastructure, security, and AWS strategy, focusing on observability, modernization, migration, security compliance, and cost optimization.

Responsibilities:

• Built an observability platform using Grafana, Tempo, Prometheus, Alloy, and Blackbox Exporter.
• Migrated critical services from AWS Lambda to Amazon ECS to enhance scalability and performance.
• Restructured AWS Organization for secure multi-account setup and implemented Transit Gateway for VPC connectivity.
• Enhanced security posture to support ISO certification including IAM, SSO, network security, and WAF policies.
• Identified and executed cost-saving strategies to reduce cloud spend.

Technologies: AWS Lambda, Amazon ECS, AWS Organization, Transit Gateway, IAM, SSO, WAF, Grafana, Tempo, Prometheus, Alloy, Blackbox Exporter

Senior DevOps/Cloud Engineer - Global Tarken (Cloud Infrastructure and AWS Strategy Improvement)

Duration: November 2024 - December 2025

Summary: Led key initiatives to improve cloud infrastructure, security, and AWS strategy, including observability platform creation, service migration, AWS organization restructuring, security enhancements, and cost optimization.

Responsibilities:

• Built observability platform with Grafana, Tempo, Prometheus, Alloy, and Blackbox Exporter.
• Migrated services from AWS Lambda to Amazon ECS.
• Restructured AWS Organization and implemented Transit Gateway.
• Improved security for ISO certification including IAM, SSO, network security, and WAF policies.
• Executed cost-saving strategies to optimize cloud spend.

Technologies: AWS Lambda, Amazon ECS, AWS Organization, Transit Gateway, IAM, SSO, WAF, Grafana, Tempo, Prometheus, Alloy, Blackbox Exporter

DevOps Engineer V - DNX Brasil (Pagol Fintech and Various Client Projects)

Duration: November 2022 - November 2024

Summary: Worked on Pagol fintech and multiple client projects involving AWS cost optimization, Pix infrastructure compliance, serverless and container architecture deployment, pipeline development, and incident management.

Responsibilities:

• Optimized AWS costs achieving 30% billing reduction.
• Participated in Pix infrastructure and compliance implementation.
• Deployed and optimized serverless and container architectures (ECS/EKS).
• Developed pipelines using Bitbucket, Github Actions, and Terraform modules.
• Managed incidents and generated post-mortem reports.

Technologies: AWS, ECS, EKS, Serverless, Bitbucket Pipelines, Github Actions, Terraform

Cloud Engineer - DNX Solutions (Nuix Data Centers Migration and Infrastructure Modernization)

Duration: July 2024 - October 2024

Summary: Executed migration of two Nuix Data Centers from Sydney to AWS, modernized legacy infrastructure to managed AWS RDS, and improved CI/CD processes with Jenkins runners on AWS ECS Fargate.

Responsibilities:

• Migrated Nuix Data Centers to AWS ensuring high availability and scalability.
• Migrated legacy infrastructure to AWS RDS managed solutions.
• Modernized CI/CD pipelines by implementing Jenkins runners on AWS ECS Fargate.
• Developed Terraform/Terragrunt modules to optimize infrastructure as code.

Technologies: AWS, AWS RDS, Jenkins, AWS ECS Fargate, Terraform, Terragrunt

DevOps Engineer - Sea Telecom (Virtualization and Container Infrastructure Migration and Management)

Duration: February 2021 - November 2022

Summary: Migrated virtualization infrastructure from Xen/Proxmox to OpenStack, restructured container environment from Docker Swarm to Kubernetes, managed network and container infrastructure, implemented monitoring ecosystem, and developed infrastructure automation.

Responsibilities:

• Migrated virtualization infrastructure to OpenStack.
• Restructured container environment to Kubernetes.
• Managed network infrastructure with Maas and JuJu, and container/virtualization with LXC, Libvirt, KVM, QEMU.
• Implemented monitoring ecosystem using Prometheus, Grafana, Loki, Cortex, and Zabbix.
• Managed databases including PostgreSQL, MariaDB, MongoDB, and Oracle.
• Developed automation for system provisioning using Terraform, Ansible, Shell Script, and Python.

Technologies: OpenStack, Kubernetes, Docker Swarm, Maas, JuJu, LXC, Libvirt, KVM, QEMU, Prometheus, Grafana, Loki, Cortex, Zabbix, PostgreSQL, MariaDB, MongoDB, Oracle, Terraform, Ansible, Shell Script, Python

Infrastructure Analyst - Eximio Solutions (Cloud Services Implementation and Developer Support)

Duration: January 2020 - January 2021

Summary: Supported developers in solution architectures and cloud adaptations, and implemented and deployed cloud services.

Responsibilities:

• Assisted developers with solution architecture and cloud adaptations.
• Implemented and deployed cloud services.

Tech Support - EEEF Cândida de Santos de Sousa (Technical Support and Maintenance)

Duration: August 2019 - November 2019

Summary: Provided technical support including computer maintenance, network configuration, printer management, and file access management.

Responsibilities:

• Performed computer maintenance and network configuration.
• Managed printers and file access.