Alexandre Souza, Developer in Campinas - State of São Paulo, Brazil

Alexandre Souza

DevOps Engineer and Developer

Campinas - State of São Paulo, Brazil
Toptal Member Since
June 7, 2019

Alexandre is a DevOps and site reliability engineer with over 15 years of experience working with development, Infrastructure, networking, and architecture of on-premise and cloud-based solutions (AWS and GCP). He's worked with many tools, workflows, and languages including Java, Ruby, Python, Lua, SQL, and Bash.

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Amazon Web Services (AWS), Amazon S3 (AWS S3), Amazon EC2...
Amazon Web Services (AWS), Amazon EC2, Amazon S3 (AWS S3), Amazon Route 53...
Code Particle
Amazon Web Services (AWS), Amazon EC2, AWS CloudFormation, Docker...


DevOps - 15 yearsAWS CloudFormation - 5 yearsSite Reliability Engineering (SRE) - 5 yearsAWS Certified Solution Architect - 3 yearsTerraform - 2 yearsAmazon EKS - 1 year


Campinas - State of São Paulo, Brazil



Preferred Environment

Cloud9, PyCharm, IntelliJ IDEA, Visual Studio Code (VS Code), Git, Linux

The most amazing...

...project I've implemented was an IaC solution that decreases the environment creation time from one week to 45 minutes,

Work Experience

2020 - PRESENT

DevOps Lead | Migration Expert (via Toptal)

  • Migrated a group of applications from Mesos/Marathon to EKS (Kubernetes).
  • Led a team of SRE/DevOps engineers to improve the metrics and alarms to the existing application.
  • Increased the application security using AWS SecretManager instead of Git stored config files.
  • Improved application deployment using Jenkins Pipeline Libraries applying Convention over Configuration based on the environment name.
Technologies: Amazon Web Services (AWS), Amazon S3 (AWS S3), Amazon EC2, Amazon CloudFront CDN, Amazon Virtual Private Cloud (VPC), AWS IAM, AWS ALB, AWS NLB, Amazon EKS, Amazon EBS, Datadog, Opsgenie, Slackbot, Amazon Route 53, AWS SSH Keys, AWS Secrets Manager
2020 - 2020

AWS Cloud Formation Expert (via Toptal)

  • Maintained the CloudFormation templates related to existing AWS resources.
  • Created CDK (AWS Cloud Development Kit) project to automate new resource creation and update. And also imported the existing resources to the CDK project.
  • Improved AWS resource maintainance adding all resources to an IaC (Infrastructure as Code) project, keeping them inventoried.
Technologies: Amazon Web Services (AWS), Amazon EC2, Amazon S3 (AWS S3), Amazon Route 53, Docker, Amazon Elastic Container Service (Amazon ECS), Amazon Virtual Private Cloud (VPC), AWS IAM, AWS CloudFormation, AWS Cloud Development Kit (CDK), Python 3
2019 - 2020

Senior CI/CD Engineer (via Toptal)

Code Particle
  • Maintained the CloudFormation templates used to create and update the AWS Infrastructure.
  • Improved the application deployment using CI/CD with rolling deployment and Blue/Green deployment technics.
  • Created Terraform Infrastructure as Code (IaC) deployment to new projects and imported existing AWS resources to Terraform.
  • Created Mongo Atlas clusters using Terraform and integrated them into the other projects.
Technologies: Amazon Web Services (AWS), Amazon EC2, AWS CloudFormation, Docker, Amazon Elastic Container Service (Amazon ECS), ECS, Python 3, CI/CD Pipelines, Bitbucket
2019 - 2019

Systems Engineer {AWS] (via Toptal)

  • Maintained Chef receipts, EC2 instances, and Nginx configurations.
  • Fixed deployment problems and updated CI/CD pipelines.
  • Updated AWS profiles and configured CloudWatch Alarms and Dashboards.
Technologies: Amazon Web Services (AWS), Amazon EC2, AWS CloudFormation
2018 - 2019

Systems Architect

  • Created and maintained a CI/CD system for a front-end application.
  • Maintained a cloud infrastructure creation system suitable to AWS and GCP cloud providers, built using Python, CloudFormation, and deployment management.
  • Maintained infrastructure-as-code tools written in Terraform.
  • Coached and reviewed the performance of five SRE/DevOps engineers to increase the delivery quality and improve the time to market of new features.
  • Wrote training documentation and structured the content among the different levels of knowledge and specialization skills to the newly hired and also to the existing SRE/DevOps Engineers.
Technologies: Amazon Web Services (AWS), Boto 3, Terraform, Google Cloud Platform (GCP), Kubernetes, Jenkins
2017 - 2018

Systems Specialist

  • Maintained critical systems fixing performance and stability problems.
  • Created a blue/green deployment process and application for the AWS-hosted company systems with configuration options for canary deployment.
  • Led the API Gateway implementation initiative based on the Kong solutions, it involved all development teams where I was responsible to propagate the benefits of the initiative and managed the delivery schedule of each team.
  • Planned and executed load and stress tests in company applications to verify bottleneck points and performance improvement.
  • Maintained Terraform-based Infrastructure as Code solutions.
  • Maintained Chef-based configuration management solutions.
Technologies: Amazon Web Services (AWS), Hystrix, Spring Boot, Java, Terraform, PostgreSQL, Docker, Kubernetes, Kong, Bash, Chef
2015 - 2017

Systems Architect

  • Led cross-functional teams about adopting DevOps culture and implement best practices related to Infrastructure As Code (IaC) development quality and decrease deployment time.
  • Automated DevOps procedures by creating applications for business rules handling, CloudFormation (AWS), and Deployment Manager (GCP) template generation, as well as Cloud environment orchestration.
  • Optimized the productivity from a five-day environment creation with several script calls done manually to it, taking 45 minutes with the call of a single script that orchestrates the entire process.
  • Spearheaded the creation of Jenkins pipelines for unit and integration tests of both the environment creation procedures and infrastructure-testing of the environments, allowing infrastructure-as-a-code acceptance tests for the environments.
  • Implemented dockerized environments to enable more parallelized infrastructure testing.
  • Executed high-availability infrastructure migration projects (all services ran in all instances) to a clustered environment (each service runs on its own set of machines), using SaltStack as the configuration manager.
  • Fixed problems in legacy infrastructure scripts/procedures.
  • Architected AWS and GCP cloud resources usage in projects for new environment features.
  • Developed improvements in cloud environments to improve performance and optimize costs.
Technologies: Amazon Web Services (AWS), Boto 3, Kubernetes, Docker, SaltStack, Python, Jenkins, Google Cloud Platform (GCP)
2014 - 2015

Senior Performance Analyst (APM)

Inmetrics S/A
  • Oversaw and responsible for software incident analysis, creating root cause reports.
  • Developed and installed monitoring solutions based on Zabbix—customizing scripts and plugins to provide custom monitoring.
Technologies: Zabbix, Telephony, Networking, WebLogic, WebSphere, JBoss EAP, AIX, HP-UX, Linux, Windows Server
2007 - 2014

Systems Architect

Lumis EIP
  • Automated and orchestrated Linux and Windows servers using configuration management software like Chef, Puppet, and Capistrano.
  • Handled build management with Ant, Maven, Jenkins, and Nexus.
  • Created the architecture of web systems and cloud high availability infrastructure (AWS and Azure).
  • Worked as an infrastructure architect at Petrobras, responsible for the stability of the Lumis portal environment, analyzing and fixing problems in WebLogic and Oracle 11g-based systems.
  • Worked as a software architect at SulAmérica, responsible for system migration projects, development of new solutions, performance optimization, and correction of problems on Lumis Portal and WebSphere systems using Oracle database. Deployed automation solutions in mixed environments and checked the production environment deployment control.
  • Worked as an on-site analyst at, responsible for the stability of Lumis portal environment. Implemented new infrastructure solutions, maintained Windows operating systems and Linux, Java Server, and HTTP Server, cache servers and other back-end applications network, evaluating and resolving infrastructure problems, development, and performance.
  • Designed and developed solutions for network administrators (Windows Server 2003 and 2008, Linux and Solaris), DBAs (SQL Server 2000, 2005 and 2008, Oracle 9i, 10g and 11g, MySQL 5 and DB2), and web administrators (Java, Tomcat Application Server, JBoss, WebSphere and WebLogic, and IIS).
  • Developed and consulted on web solutions, procedures creation, reports, and statistics using Java code, Groovy, Python, Ruby, JavaScript, SQL, Shell, and .NET.
  • Evaluated, fixed, and improved the performance of web solutions and batches with high availability and performance requirements.
Technologies: Content Management, Networking, Amazon Web Services (AWS), Nexus, Jenkins, Apache Maven, Ant, Java, Python, Chef, Windows Server, Linux


Pod Provision

Each client has their own cloud infrastructure. Before the project, it took one week to create each environment and was limited to AWS and all-in-one clusters. After the project was completed, the expenditure for environment creation took a mere 45 minutes and could be deployed on AWS and GCP, and clustered architecture.

Monitoring Project

Using Zabbix, I created several monitoring features:
• Servers (using auto-deploy)
• Networking (using network devices auto-discovery)
• VoIP
• Links
• CloudWatch integration

API Gateway

Using Kong, I created the company's Edge API Gateway to route calls from an API URL to the different microservices. The API Gateway is also responsible for checking authentication and the response login URL to unauthenticated calls.

Blue/Green Deployment

Before the project, deployments caused 5 to 10 minutes in downtime and lacked version synchronization. After the project was completed, the deployments now run with 0 (zero) downtime and all instances ran on the same version.



Python 3, Java, JavaScript, TypeScript, SQL, Python, Bash, Perl


Flask, AWS HA, Django, Spring, Spring Core, Spring Boot


Amazon Elastic Container Service (Amazon ECS), Apache HTTP Server, NGINX, Boto, Boto 3, AWS CLI, AWS ELB, AWS SDK, Amazon Elastic Container Registry (Amazon ECR), Google Compute Engine (GCE), Google Kubernetes Engine (GKE), Amazon EKS, Amazon Simple Email Service (SES), AWS CloudFormation, Amazon CloudFront CDN, Terraform, SaltStack, Amazon EBS, Git, IntelliJ IDEA, PyCharm, Chef, Apache Maven, Jenkins, Zabbix, Kong, Bitbucket, Amazon Virtual Private Cloud (VPC), AWS IAM


DevOps, Automated Testing, Agile, Scrum, Kanban


Amazon EC2, Kubernetes, Java EE, AWS Lambda, Linux, Visual Studio Code (VS Code), Windows Server, Nexus, Amazon Web Services (AWS), AIX, JBoss EAP, WebSphere, Google Cloud Platform (GCP), Docker, AWS ALB, AWS NLB, HP-UX


Amazon S3 (AWS S3), Amazon EFS, PostgreSQL, Datadog, SQL Server 2000, SQL Server 2005, SQL Server 2010, SQL Server 2008 R2


Sanic Web Server, Cloud9, AWS DevOps, Site Reliability Engineering (SRE), Cloud, AWS Certified Solution Architect, Identity & Access Management (IAM), Cloud Services, Spring Cloud, WebLogic, Cloud Security, Ant, Networking, Content Management, Telephony, ECS, CI/CD Pipelines, Amazon Route 53, AWS Cloud Development Kit (CDK), Opsgenie, Slackbot, AWS SSH Keys, AWS Secrets Manager


jQuery, Hystrix


2003 - 2005

Master's Degree in Computer Engineering

Universidade Estácio de Sá - Rio de Janeiro, Brazil