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.
Portfolio
Experience
- Linux - 20 years
- Python - 10 years
- Docker - 7 years
- Ansible - 5 years
- Elasticsearch - 5 years
- DevOps - 5 years
- Terraform - 2 years
- Docker Swarm - 2 years
Availability
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
VALE
- 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.
IaC DevOps Engineer
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.
System Engineer
EDP - ESCELSA
- 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.
System Administrator
ESCELSANET
- 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.
Experience
VALE
Intelligo Group (via Toptal)
EDP - ESCELSA
Education
Master of Business Administration (MBA) Degree in Information Security
UCL – Faculdade do Centro Leste - Serra, ES, Brazil
Bachelor’s Degree in Information Systems
UCL – Faculdade do Centro Leste - Serra, ES, Brazil
Certifications
AWS Certified SysOps Administrator
Amazon
ITIL Foundation V3
ICASA
CCNA - CISCO Certified Network Associate
Cisco
MCSE +Security – Microsoft Windows Server 2003
Microsoft
LPIC-1: Linux System Administrator
Linux Professional Institute
LPIC-2: Linux Engineer
Linux Professional Institute
RHCE – Red Hat Certified Engineer
Red Hat
Skills
Libraries/APIs
RADIUS
Tools
Check_MK, Nagios, Kibana, Logstash, Rsyslog, Ansible, Ansible Tower, Terraform, GitLab CI/CD, Docker Swarm, Amazon Elastic Container Service (ECS), Amazon EKS, CircleCI, Amazon ElastiCache, Amazon Simple Queue Service (SQS), Travis CI, Git, Slack, Elastic, Lotus Domino, Postfix, RabbitMQ, Jenkins, Asterisk
Languages
Perl, Python, JavaScript, PHP
Paradigms
REST, DevOps
Platforms
Amazon Web Services (AWS), Docker, Linux, AWS Elastic Beanstalk, Amazon EC2, Kubernetes, AWS Lambda, Visual Studio Code (VS Code), DX Spectrum, Azure, AWS ALB
Storage
Redis, Elasticsearch, PostgreSQL, MySQL, MongoDB, Microsoft SQL Server, Neo4j
Frameworks
Angular, Django
Other
AWS DevOps, Amazon Kinesis, Prometheus, AWS Certified SysOps Administrator, Riverbed, VMware ESXi, Cisco, IMAP, POP3, SOAP
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