Renato Araujo, Developer in Serra - ES, Brazil
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Renato Araujo

Verified Expert  in Engineering

DevOps Developer

Serra - ES, Brazil
Toptal Member Since
November 7, 2018

Renato is a Linux and network system administrator with 20+ years of experience designing, deploying, and automating systems. He is comfortable working with organizations of all sizes—from small organizations to large enterprises.


Amazon Web Services (AWS), Azure, Elastic, DX Spectrum, Cisco, Perl, Python...
Intelligo Group (via Toptal)
Amazon Web Services (AWS), Neo4j, RabbitMQ, Redis, Elasticsearch, Ansible...
Lotus Domino, Perl, VMware ESXi, Riverbed, Cisco, Nagios, Linux, Asterisk...




Preferred Environment

Slack, Visual Studio Code (VS Code), Git, Linux

The most amazing...

...project I've completed was to design and implement a monitoring infrastructure for thousands of network devices that is fully automated.

Work Experience

System Engineer

2012 - 2020
  • Designed, deployed, and supported network monitoring toolset infrastructure for a large enterprise environment.
  • Automated the migration of thousands of network device management configurations from MSP to in-house management using Python and Perl scripts.
  • Implemented the Elastic stack to handle network logging management for thousands of network devices for Syslog, TACACS, and Radius accounting.
  • Automated the deployment of technical network standards (Security, QoS, AAA, etc.) using Python scripts.
  • Implemented AWX (Red Hat Ansible Tower upstream) using Docker and Docker Compose, and developed the Playbooks to manage the network management Infrastructure.
  • Integrated the Fault Management tool with the ITSM solution using the products API to open, close, update and route incidents to the correct groups based on complex business rules.
  • Developed a custom NagVis back end in PHP to query the proprietary performance management tool.
  • Authored the CA Spectrum Ansible module in order to support the company requirements.
Technologies: Amazon Web Services (AWS), Azure, Elastic, DX Spectrum, Cisco, Perl, Python, Ansible, Linux, Docker, Terraform, Elasticsearch, Logstash, Prometheus, Nagios, PostgreSQL, Amazon EC2, DevOps, AWS Lambda, VMware ESXi, JavaScript, MongoDB, MySQL, AWS DevOps, AWS Certified SysOps Administrator, REST, Rsyslog, Kibana

IaC DevOps Engineer

2019 - 2019
Intelligo Group (via Toptal)
  • Developed fully customizable Terraform module for the deployment of the Elastic Stack and recommended plugins on AWS, complete with Load Balancer and security best practices.
  • Delivered Ansible playbooks for upgrading the environments and applying changes to the configurations.
  • Delivered similar Terraform modules and Ansible playbooks for a RabbitMQ Cluster, Redis Cluster, and a Neo4j casual cluster.
  • Documented all the Terraform modules and Ansible playbooks with detailed explanations and examples.
Technologies: Amazon Web Services (AWS), Neo4j, RabbitMQ, Redis, Elasticsearch, Ansible, Terraform, Amazon Elastic Container Service (Amazon ECS), Amazon EC2, AWS ALB, Logstash, Docker, DevOps, Linux

System Engineer

2003 - 2012
  • Designed, implemented, and managed the IT infrastructure monitoring solution based on Nagios, Cacti, and NagVis.
  • Migrated Lotus Domino email solution from Windows to Linux.
  • Implemented VoIP solution based on Asterisk allowing ESCELSA to meet regulatory agency ANEEL requirement of having all customer service agencies interconnected with local extension numbers by the specified deadline.
  • Deployed and managed IronPort, NetCache, Cisco ASA, and Riverbed appliances.
  • Implemented a Modbus gateway in Perl allowing the connection of remote PLCs to the company SCADA system.
  • Managed the on-site VMWare ESXi Farm that served as the foundation for many critical applications.
Technologies: Lotus Domino, Perl, VMware ESXi, Riverbed, Cisco, Nagios, Linux, Asterisk, Python, JavaScript, Angular, MongoDB, SOAP, Django, MySQL, PostgreSQL, AWS DevOps, AWS Certified SysOps Administrator, Check_MK, REST, Rsyslog, Ansible Tower, Kibana, Terraform

System Administrator

1996 - 2003
  • Designed, implemented, and managed the network infrastructure of the Internet Service Provider.
  • Deployed and managed the email servers, web servers, and firewalls.
  • Deployed and managed the dial-up infrastructure across the state.
  • Developed the in-house CRM and ERP solution using PHP and MySQL.
  • Integrated the billing system with the OS/390 system used by the holding company.
Technologies: RADIUS, MySQL, Microsoft SQL Server, POP3, IMAP, Postfix, Linux, PHP, Asterisk, JavaScript, PostgreSQL, REST, Rsyslog


Ansible, AWX/Tower, Git, Python, AWX, FCAPS, Cisco, Elasticsearch, CheckMK, NagVis

Intelligo Group (via Toptal)

Terraform, Ansible, Elasticsearch, Redis, RabbitMQ, Neo4j, AWS, ASG


Python, Perl, ESXi, Asterisk, Nagios, Riverbed, IronPort, Lotus Domino
2009 - 2009

Master of Business Administration (MBA) Degree in Information Security

UCL – Faculdade do Centro Leste - Serra, ES, Brazil

2004 - 2008

Bachelor’s Degree in Information Systems

UCL – Faculdade do Centro Leste - Serra, ES, Brazil

MARCH 2019 - MARCH 2022

AWS Certified SysOps Administrator



ITIL Foundation V3


MAY 2007 - MAY 2010

CCNA - CISCO Certified Network Associate



MCSE +Security – Microsoft Windows Server 2003


JULY 2005 - JULY 2010

LPIC-1: Linux System Administrator

Linux Professional Institute

JULY 2005 - JULY 2010

LPIC-2: Linux Engineer

Linux Professional Institute

NOVEMBER 2003 - MARCH 2007

RHCE – Red Hat Certified Engineer

Red Hat




Check_MK, Nagios, Kibana, Logstash, Rsyslog, Ansible, Ansible Tower, Terraform, GitLab CI/CD, Docker Swarm, Amazon Elastic Container Service (Amazon ECS), Amazon EKS, CircleCI, Amazon ElastiCache, Amazon Simple Queue Service (SQS), Travis CI, Git, Slack, Elastic, Lotus Domino, Postfix, RabbitMQ, Jenkins, Asterisk


Perl, Python, JavaScript, PHP


Amazon Web Services (AWS), Docker, Linux, AWS Elastic Beanstalk, Amazon EC2, Kubernetes, AWS Lambda, Visual Studio Code (VS Code), DX Spectrum, Azure, AWS ALB


REST, DevOps


Redis, Elasticsearch, PostgreSQL, MySQL, MongoDB, Microsoft SQL Server, Neo4j


Angular, Django


AWS DevOps, Amazon Kinesis, Prometheus, AWS Certified SysOps Administrator, Riverbed, VMware ESXi, Cisco, IMAP, POP3, SOAP

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