Roberto is available for hire
Hire RobertoRoberto José Roque Paz
Verified Expert in Engineering
DevOps Engineer and Developer
Córdoba, Cordoba, Argentina
Toptal member since June 13, 2022
Bio
Roberto is a DevOps engineer and architect who started his professional career as a freelance developer and Unix systems administrator. Most of his projects were oriented to embedded systems and domotics based on ANSI, C, Python, and Linux. Lately, Roberto has focused on DevOps with a preference for open source code and tools.
Portfolio
Proofpoint
Kubernetes, Terraform, Jenkins, Linux, Puppet, Scripting, Bash, Python, Agile...
DXC Technology
Ansible, Puppet, Automation, CI/CD Pipelines, Linux, Kubernetes, Azure...
Argalis
Software, Monitoring, Linux, Zabbix, Security, HTML, SSH, Git...
Experience
- Linux - 20 years
- Python - 10 years
- Configuration Management - 5 years
- Automation - 5 years
- Infrastructure as Code (IaC) - 5 years
- CI/CD Pipelines - 5 years
- Kubernetes - 3 years
Availability
Part-time
Preferred Environment
Linux, Kubernetes, Amazon Web Services (AWS), Python, CI/CD Pipelines, Infrastructure as Code (IaC), Automation, Docker, Configuration Management, Monitoring
The most amazing...
...thing I've added to a big Unix infrastructure of 3,000+ hosts is some automation layers and pipelines, resulting in the automation of several operations tasks.
Work Experience
DevOps Engineer
2021 - PRESENT
Proofpoint
- Participated in digital transformation processes to mentor teams in cluster-based agile development processes.
- Contributed to implementing new code pipelines and improving existing ones.
- Played a key role in cost analysis for cloud-based products and services, looking for better options to lower the associated cost of using cloud services.
Technologies: Kubernetes, Terraform, Jenkins, Linux, Puppet, Scripting, Bash, Python, Agile, Ansible, Docker, Jenkins Pipeline, Infrastructure as Code (IaC), Automation, CI/CD Pipelines, Configuration Management, Monitoring, Grafana, Splunk, Software, Programming, Data-level Security, DevOps Engineer, High Availability Disaster Recovery (HADR), APIs, Regular Expressions, NGINX, Scrum, DevOps, Amazon Web Services (AWS), GitHub, Security, Amazon EC2, Amazon S3 (AWS S3), Infrastructure, SSH, Git, AWS Lambda, Site Reliability Engineering (SRE), AWS IAM, Amazon Elastic Container Service (ECS), Cloud, System Administration, Ubuntu, IT Networking, Networks, Continuous Deployment, Build Pipelines, Docker Compose, Bitbucket, IT Infrastructure, Cloud Infrastructure, Continuous Integration (CI), AWS Elastic Beanstalk, Amazon Virtual Private Cloud (VPC), Amazon CloudFront CDN, Ubuntu Linux, Cron, Bash Script, Cloud Services, Load Balancers, Linux Administration, Argo CD, Shell Scripting, Containerization, Microservices, Continuous Delivery (CD), Microservices Architecture, AWS DevOps, Amazon Simple Email Service (SES), Cloud Architecture, DevSecOps, Release Management
Technical Automation Lead
2017 - 2021
DXC Technology
- Handled ansible-based code to automate regular system operator tasks such as patching and alert reduction in our customer's infrastructure, American Airlines, with over 3,000 Unix servers.
- Implemented a Puppet-based configuration managed system for the Unix environment per customer request.
- Added Terraform-based code to manage cloud resources in Azure for internal teams.
- Contributed to Unix troubleshooting because of having over 25 years of experience working with Unix environments.
Technologies: Ansible, Puppet, Automation, CI/CD Pipelines, Linux, Kubernetes, Azure, Orchestration, Configuration Management, Monitoring, Python, Ubuntu Server, RHEL, CentOS, Nagios, Bash, Scripting, Tcpdump, Troubleshooting, Digital Transformation, Operating Systems, Network Security, Agile, NGINX, Scrum, DevOps, Amazon Web Services (AWS), GitHub, Security, PostgreSQL, Amazon EC2, Amazon S3 (AWS S3), Apache Tomcat, Infrastructure, SSH, Google Cloud Platform (GCP), Git, AWS Lambda, Site Reliability Engineering (SRE), AWS IAM, Cloud, System Administration, Ubuntu, IT Networking, Networks, Continuous Deployment, Build Pipelines, Docker Compose, Email Systems, Email, IT Infrastructure, Cloud Infrastructure, Continuous Integration (CI), AWS Elastic Beanstalk, Amazon Virtual Private Cloud (VPC), Amazon CloudFront CDN, Ubuntu Linux, Cron, Bash Script, Cloud Services, Virtualization, Load Balancers, Linux Administration, Shell Scripting, Tkinter, Containerization, Microservices, Continuous Delivery (CD), Microservices Architecture, VMware, Release Management
Developer and System Administrator
2018 - 2019
Argalis
- Contributed, as a SysAdmin, to maintain a set of Linux servers running several internet services.
- Developed code for a Zabbix-based monitoring system, including the integration with some other notification channels like Telegram.
- Implemented a Linux virtualization layer over a Kernel-based Virtual Machine (KVM) for a few clients. The guest servers included Linux and Windows operating systems.
Technologies: Software, Monitoring, Linux, Zabbix, Security, HTML, SSH, Git, System Administration, Ubuntu, IT Networking, SFTP, Email Systems, Email, Gmail, Email Authentication, Ubuntu Linux, Proxy Servers, Cron, Bash Script, Linux Administration, Shell Scripting, LAMP
Developer and System Administrator
2014 - 2017
360NET
- Worked as SysAdmin of multiple appliances installed in different hotels.
- Supported the migration tasks of a proprietary software based on Fedora Linux, an access management software for hotels, cafeterias, and more.
- Developed scripts for network and system management for Nagios and add-ons.
- Built a Simple Network Management Protocol (SNMP) based discovery tool to find customers by inspecting the MAC address table in networking devices.
Technologies: Linux, Fedora, Python, Perl, Automation, Monitoring, Nagios, lighttpd, SNMP, Bash, Scripting, Troubleshooting, TCP/IP, Tcpdump, Firewalls, MariaDB, GitHub, Security, HTML, SSH, Git, System Administration, Ubuntu, IT Networking, Email Systems, Email, Gmail, Email Authentication, Proxy Servers, Cron, Bash Script, Linux Administration, Shell Scripting, LAMP
Developer and System Administrator
2009 - 2017
Multivoice (acquired by Conduent)
- Installed and managed a set of Qmail-based mail servers for +2,000 company members at a Debian Linux operating system. I also included services like webmail, SpamAssassin, antivirus, and more.
- Developed an additional custom authentication layer for the mail server, which included Windows AD integration plus authorization according to group membership and group-to-group permissions.
- Created several scripts to be used in regular user or group management tasks.
Technologies: Linux, Perl, Qmail, SpamAssassin, Spam Filtering, Antivirus Software, Debian, Monitoring, Mail Servers, CGI, Programming, Software, Scripting, Bash, Troubleshooting, MySQL, Security, HTML, SSH, Git, System Administration, Ubuntu, Email Systems, Email, Gmail, Email Authentication, Ubuntu Linux, Cron, Bash Script, Load Balancers, Linux Administration, Shell Scripting, LAMP
Developer
2005 - 2017
Consulfem
- Built a Linux-based control access system for parking lots, including embedded code in a Raspberry Pi board to manage hardware, a client-server model to send events from the board to a server and the internet, and a UI based on C using GTK+.
- Developed an access control system that integrated various hardware elements such as fingerprint and presence sensors, RFID card readers, cameras, and motor controllers.
- Created a vehicle tracking system using purely open source code, including GPS, GPRS, and GIS visualization.
- Developed a rail train tracking system that used custom-built hardware integrating GPS, GPRS, and SMPP to report the position.
- Built a web common gateway interface (CGI) to calculate interference between point-to-point radio links.
Technologies: Linux, Python, C, Perl, CGI, Embedded C, Monitoring, Nagios, Electronics, Software, Development, Raspberry Pi, Networking, Domotics, Arduino, Bash, Scripting, Troubleshooting, RS-232, TCP/IP, Tcpdump, Client-server Model, Unix, Ethernet, Firewalls, Vehicle Tracking Systems, MySQL, GTK+, Data Logger, GitHub, Security, PostgreSQL, HTML, Git, IT Networking, FreeBSD, Email, Gmail, Email Authentication, Ubuntu Linux, Proxy Servers, Cron, Subversion (SVN), Bash Script, Linux Administration, Shell Scripting, Raspbian, LAMP, GTK
Developer and System Administrator
2005 - 2017
ICOX
- Provided Linux support for multiple clients running in a group of self-managed servers that used Plesk and cPanel as management tools.
- Guided troubleshooting in multiple scenarios that require software, network, or both.
- Developed several scripts to assist with regular management tasks.
Technologies: Linux, Apache, Perl, Monitoring, Software, Programming, Tcpdump, Ubuntu Server, Amazon Web Services (AWS), Qmail, Mail Servers, Bash, Scripting, Troubleshooting, Regular Expressions, MySQL, Security, HTML, SSH, Cloud, System Administration, Ubuntu, IT Networking, SFTP, Email Systems, Email, Email Authentication, SSL Certificates, Ubuntu Linux, Proxy Servers, Cron, Subversion (SVN), Bash Script, Linux Administration, Shell Scripting, LAMP
Developer and System Administrator
2000 - 2004
Gerencia de Telecomunicaciones (Córdoba Government)
- Implemented and improved a set of tools for managing and monitoring local area networks (LAN), wide area networks (WAN), and servers.
- Developed a centralized telephone billing system.
- Provided support and troubleshooting on network security-related events.
Technologies: Linux, Perl, Slackware, Debian, CGI, Apache, PBX, Monitoring, Embedded C, Networking, C, Network Programming, Client-server Model, MySQL, SNMP, Bash, Scripting, Troubleshooting, RS-232, TCP/IP, Ethernet, Firewalls, Data Logger, Security, HTML, Infrastructure, SSH, System Administration, IT Networking, VPN, Networks, Squid Proxy Server, Proxy Servers, Squid, Cron, Bash Script, Linux Administration, Shell Scripting, LAMP
Developer and System Administrator
2000 - 2002
Communication Partners
- Developed a web CGI UI to manage radius users for multiple telephone-based internet service providers (ISP).
- Conducted everyday sysadmin tasks for multiple mail servers and radius servers.
- Created a web CGI UI to manage client access in cyber cafes.
Technologies: Linux, Unix, Debian Linux, Monitoring, Perl, Bash, Scripting, Apache, Qmail, SNMP, Troubleshooting, Networking, Security, HTML, SSH, System Administration, Ubuntu, IT Networking, VPN, Email Systems, Email, Cron, Bash Script, Linux Administration, Shell Scripting, LAMP
Developer and System Administrator
1999 - 2000
Tecom
- Conducted everyday sysadmin tasks for UNIX, Linux, and RADIUS servers.
- Developed a web CGI UI to assist help desk and customer support.
- Implemented several network monitoring tools and customer troubleshooting tools.
Technologies: Linux, Apache, Cisco, Sendmail, RADIUS, Security, HTML, SSH, System Administration, IT Networking, Email Systems, Email, Squid Proxy Server, Proxy Servers, Squid, Cron, Bash Script, Linux Administration, Shell Scripting, LAMP
System Administrator
1996 - 2000
Department of Computer Science - Universidad Nacional de Córdoba
- Managed and provided support for the network infrastructure and internet services.
- Developed a web CGI UI for querying inventory for the faculty library.
- Integrated the team that managed e-mail infrastructure and all related services in the university's early days of internet access.
Technologies: Linux, Unix, Apache, Perl, CGI, Bash, Scripting, Security, Infrastructure, SSH, System Administration, IT Networking, Networks, SFTP, Email Systems, Email, IT Infrastructure, SSL Certificates, Squid Proxy Server, Proxy Servers, Squid, Cron, Bash Script, Linux Administration, Shell Scripting, LAMP
System Administrator
1998 - 1999
Municipalidad de Córdoba
- Provided support for IBM equipment, including Ethernet and token-ring layer two networks.
- Handled support for Microsoft Windows NT servers infrastructure.
- Fixed network issues and provided performance analysis.
Technologies: Linux, Unix, Monitoring, Operating Systems, TCP/IP, Troubleshooting, Security, Infrastructure, SSH, System Administration, IT Networking, Networks, IT Infrastructure, Cron, Bash Script, Linux Administration, Shell Scripting, LAMP
System Administrator
1998 - 1999
Telecom Argentina
- Worked as UNIX SysAdmin for SCO and AIX systems that hosted custom company software. On-premise data center included Compaq and RS-6000 servers.
- Integrated the Level 3 support team for servers and custom data network services.
- Took part of the team that managed the migration process for further concentration of primary services in Buenos Aires.
Technologies: Linux, Unix, Bash, Scripting, Monitoring, Security, Infrastructure, System Administration, IT Networking, Email Systems, IT Infrastructure, Cron, Bash Script, Linux Administration, Shell Scripting, LAMP
Experience
Ansible Playbooks for Managing VMware-based Infrastructure
https://github.com/rjrpaz/ansible-vmwareThe set of playbooks allowed me to do most of the main tasks of managing a VMware-based infrastructure. A lot of sysops tasks were just a combination of these. For example, patching involved:
• Shutting down a VM.
• Taking a snapshot.
• Starting the VM.
• Applying the patch.
• Restarting the VM.
• Running post-checks.
• Shutting down a VM.
• Taking a snapshot.
• Starting the VM.
• Applying the patch.
• Restarting the VM.
• Running post-checks.
IaC Testing Layer
https://github.com/rjrpaz/fg-challengeAs part of a technical challenge, I developed a pipeline that included:
• Terraform code to create a cluster of two EC2 instances behind an ALB running Nginx, serving a static file.
• Terratest stage to automatically test the Terraform code.
The pipeline was implemented using Github Actions.
• Terraform code to create a cluster of two EC2 instances behind an ALB running Nginx, serving a static file.
• Terratest stage to automatically test the Terraform code.
The pipeline was implemented using Github Actions.
Deployment Using Helm and Traefik
https://github.com/rjrpaz/deploy-using-helmDeveloped a full provisioned pipeline to deploy a static web page using Helm and Traefik.
The project consists of a static HTML page running on its own Docker image deployed as a container in a Kubernetes cluster using Helm. The pipeline also includes a Traefik container as an ingress.
The project consists of a static HTML page running on its own Docker image deployed as a container in a Kubernetes cluster using Helm. The pipeline also includes a Traefik container as an ingress.
Delivery for a Three-tier Node.js Application in the Cloud
https://github.com/rjrpaz/tt-challengeThis project aimed to design a continuous delivery architecture for a scalable and secure 3-tier Node.js application. Both web and API tiers are exposed to the internet, while the database tier is not. All resources were created using Terraform, and the infrastructure is high availability.
RSS to Telegram Gateway
https://github.com/rjrpaz/rss2trss2t is a simple bot to use as a gateway between an RSS feeder and a few Telegram channels. This script runs via cron and updates different channels, including any new entries from different RSS feeds. The feeds are grouped according to the subject.
Twitter to Telegram Gateway
https://github.com/rjrpaz/t2tUsually, when I check a tweet with useful information, but I have no time to read the article's link, I'm forced to add it to Saved Tweets, and it will probably die there.
This project aims to follow the timeline of specific Twitter users, check for new tweets, download them and send them to a Telegram channel.
This project aims to follow the timeline of specific Twitter users, check for new tweets, download them and send them to a Telegram channel.
Centralized Telephone Billing System
https://www.robertopaz.com.ar/centralized/telephone/billing/system/2014/02/21/Centralized_telephone_billing_system.htmlAround 1999 I started to work for the local government in Córdoba, Argentina. I was part of the team that managed everything related to communications and networking.
This specific project included:
• Getting PBX billing information through RS-232 data loggers.
• Client-server software to upload billing information to the main server.
• Web CGI development to access billing information.
This specific project included:
• Getting PBX billing information through RS-232 data loggers.
• Client-server software to upload billing information to the main server.
• Web CGI development to access billing information.
Virtual Web Laboratory for Digital Electronics
https://github.com/rjrpaz/gds-820Created a virtual lab for electronic development based on the GDS-820. It included a web CGI interface for the GDS-820 oscilloscope. This oscilloscope had an RS-232 port, which allowed to manage the device and obtain dict values, including all the x and y values. The result was printed on a screen using Gnuplot and CGI.
Oscilloscope's main features:
https://www.gwinstek.com/en-global/products/detail/GDS-800
Oscilloscope's main features:
https://www.gwinstek.com/en-global/products/detail/GDS-800
Live Streaming from Raspberry Pi
https://www.robertopaz.com.ar/streaming/ustream/raspberry/pi/camera/board/2014/02/20/Live_streaming_Ustream_Raspberry_Pi_plus_Camera_board.htmlThis project consisted of a guided presentation on enabling live streaming through the Raspberry Pi. The Raspberry Pi camera board easily allows adding video support to the Raspberry Pi board. The camera board can be obtained as an additional module, and it only requires connecting the panel and upgrading the firmware. The live streaming used Ustream as the media streamer, one of the internet's most used streaming services.
Adding RTC to Raspberry Pi
https://github.com/rjrpaz/RTCforRaspberryPiRaspberry Pi is a board that doesn't include an RTC. This feature may not be an issue if the board has an internet connection. However, for standalone boards, this may be required. This project includes a couple of utils to manage DS1307, an RTC from Dallas Semiconductors, through i2c.
Education
2008 - 2013
Master's Degree in Data Networks and Security
La Plata National University - La Plata, Argentina
1991 - 1996
Engineer's Degree in Electronic Engineering
National University of Córdoba - Córdoba, Argentina
Certifications
DECEMBER 2022 - DECEMBER 2025
AWS Certified Developer — Associate
Amazon Web Services
NOVEMBER 2022 - NOVEMBER 2025
AWS Certified Cloud Practitioner
Amazon Web Services
AUGUST 2022 - AUGUST 2025
AWS Certified Solutions Architect Associate
AWS
JUNE 2021 - JUNE 2024
CompTIA Linux+
CompTIA
JUNE 2020 - PRESENT
Scrum Foundation Professional Certificate (SFPC)
CertiProf
Skills
Libraries/APIs
Microsoft HPC, X (formerly Twitter) API, Jenkins Pipeline, RADIUS
Tools
Ansible, Terraform, Nagios, Sendmail, Apache, Tcpdump, Cron, Puppet, Jenkins, Zabbix, NGINX, lighttpd, GTK+, Grafana, SpamAssassin, Helm, GitHub, Apache Tomcat, Git, AWS IAM, VPN, Docker Compose, Bitbucket, Amazon Virtual Private Cloud (VPC), Amazon CloudFront CDN, Squid Proxy Server, Squid, Subversion (SVN), VMware, Amazon Simple Email Service (SES), Amazon Simple Notification Service (SNS), Splunk, Traefik, GitLab CI/CD, Amazon Elastic Container Service (ECS), Amazon Simple Queue Service (SQS), AWS CloudTrail, Amazon CloudWatch, AWS CloudFormation, GTK
Languages
C, Perl, Bash, Bash Script, Python, Embedded C, HTML
Paradigms
Scrum, DevOps, Automation, Agile, Continuous Deployment, Continuous Integration (CI), Microservices, Continuous Delivery (CD), Microservices Architecture, DevSecOps
Platforms
Linux, CentOS, Raspberry Pi, Unix, Debian, Debian Linux, Ubuntu, Ubuntu Linux, Raspbian, LAMP, Kubernetes, Docker, Arduino, Azure, Fedora, Slackware, Amazon Web Services (AWS), Amazon EC2, AWS Elastic Beanstalk, Google Cloud Platform (GCP), AWS Lambda, FreeBSD, AWS Cloud Computing Services
Industry Expertise
Network Security
Storage
MySQL, MariaDB, Amazon S3 (AWS S3), PostgreSQL
Other
RHEL, Ubuntu Server, Domotics, Mail Servers, Qmail, Network Programming, Data Logger, CGI, SNMP, Scripting, Troubleshooting, RS-232, Operating Systems, TCP/IP, Client-server Model, Ethernet, Firewalls, Vehicle Tracking Systems, Regular Expressions, Development, Infrastructure, SSH, Site Reliability Engineering (SRE), System Administration, IT Networking, SFTP, Email Systems, Email, Linux Administration, Shell Scripting, CI/CD Pipelines, Infrastructure as Code (IaC), Configuration Management, Monitoring, Electronics, Software, Programming, Data Communication, Networking, Data-level Security, DevOps Engineer, High Availability Disaster Recovery (HADR), Telegram Bots, Digital Transformation, APIs, Orchestration, Spam Filtering, Antivirus Software, PBX, GitHub Actions, Security, Cloud, Networks, Build Pipelines, Gmail, IT Infrastructure, Email Authentication, Cloud Infrastructure, SSL Certificates, Proxy Servers, Cloud Services, Virtualization, Load Balancers, Containerization, AWS DevOps, Cloud Architecture, Release Management, Cisco, Terratest, Amazon RDS, AWS Cloud Architecture, AWS Certified Developer, Serverless, Argo CD, Tkinter
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