Licenciate degree in Computer Science, Facultad de Matemática, Astronomía y Física, Universidad Nacional de Córdoba. Capstone Project: «Trieste: A distributed filesystem».
Abstract:
Most network installations use centralized network filesystems, and some even use peer-to-peer ones. Centralized filesystems don't use the resources in the client machines, and peer-to-peer ones are not transparent enough and are not easy to administrate. We designed and implemented a fault-tolerant, easy to administrate distributed filesystem, which can add storage space easily. Trieste showed to be greatly scalable, using disk bandwidth and space of each added computer. Its features makes it suitable for clusters.
Since May 2018 - Cloudian Inc.
Professional Services. Coordination with Solution Engenieers, product installation in CLients' infrastructure, post install services; all this for about one year.
At one point we had to manage the upgrade of CentOS 6 to 7 for all our clients, which included both extending the only unofficial tool and developing our own wrapper around it, handling detals like UEFI; and doing the upgrades ourselves.
I then bacame a developer. My tasks are mostly around the Installer, currently developed in Bash and Puppet, but we're migrating to a mostly complete Salt setup.
I also developed our SSL Certificate management from scratch.
I'm also the developer of a tool based on Python, Ansible and Terraform that allows us to deploy any cluster architecture on several cloud systems, like EC2, LXD, Docker and Vagrant.
I also participated on the initial development of our Monitoring system based on Prometheus and Grafana.
Finally, I'm also part of an informal security team that stays cuurent on CVEs on the libraries and tools that we use and respond to Client queries around them.
- Languages: Python, Golang, Bash
- Services: Cassandra, Redis, RocksDB
- Configuration Management: Puppet, Salt, Ansible
- Infrastructure Automation: Terraform
- Monitoring: Prometheus, Grafana
- Other: SSL Certificates
October 2016-March 2018 - Travaux.com
DevOps and VoIP/IPBX administrator. I'm automating internal procedures, which I export as a WebService so other systems can use them. This task includes interacting with several internal systems, like the database, mail and SSO servers, and the VoIP/IPBX system.
I also administrate the VoIP/IPBX system, which serves 3 call centers with 250 agents in total. This is implemented with Asterisk. Currently I'm planning the migration to a new version, which includes creating a testing environment and testing the different use cases.
- Languages: Python/Django/DRF
- Services: Asterisk
- Configuration Management: Salt.
- System tools: Docker, LXC, Zabbix, Grafana
December 2012-September 2015 - Astek Sud-Est for Amadeus SAS (http://www.amadeus.com)
Developer for the R&D-SSP-TAE-TDS team. We developed several systems:
- An in memory Key-Value store.
- A manually sharded database with multi dimensional range search on top of it.
- A computation scheduling system that takes in account popularity and volatility of the data.
These systems handle flight data for different types of search queries.
I added a new backend to the KVS that used LMDB (http://symas.com/mdb/) for storing data on disk so we could handle terabytes of data, as a mitigating step while we prepared to migrate to MongoDB.
- Languages: C, C++, Python
- Development tools: Jenkins, Atlassian (git, jira)
- Databases: LevelDB, LMDB
- System tools: docker, chef
June 2011-November 2012 - Astek Sud-Est for Orange Portails (http://www.orange.com/)
System Administrator at the HEBEX Division, which is in charge of maintaining all the 3000+ servers split in 3 Data Centers used for developing, testing and hosting a lot of Orange's sites, including Orange and associated sites (actu, immobilier, finances, femme, ecole, bussines, etc) and Voila, among others.
My main work was around maintaining multi-site databases that host the data for all those web sites, using different technologies (PostgreSQL+Slony-I clusters, MySQL clusters, Cassandra clusters), and the WebServices developed in C++ and PHP, hosted in Apache servers, that are used to access those databases; installing new versions of production code; massively migrating the servers from several Debian releases to Ubuntu Lucid and Precise LTSs; and supervising the whole infrastructure in general, including the creation of new monitoring tests and graphs.
My last task was to research the possibility of using Cassandra as a database for the type of data we handled, including its behavior and recovering on different types of failures and its health monitoring.
- Languages: Bash, Perl, Java, PHP
- Platforms: Linux (Ubuntu, Debian)
- Databases: PostgreSQL+Slony-I+PGBouncer, MySQL cluster, Apache Cassandra
- Web Servers: Apache+mod_ndb, PHP and C++ webservices.
- Networking: GTM load balancers.
- Server Administration: CFEngine, XYMon, BigBrother.
- Other: redundant setups, multiple datacenters.
Engineer expert for the Hop project (http://hop.inria.fr/). I'm porting both Bigloo, a Scheme compiler, and Hop to the Android platform. I'm also modifying Hop to run as a OSGI bundle and helped improving and expanding Hop's runtime library.
System administrator assistant. I helped in the Hosting Division, planning and executing consolidation of servers using Xen and migrating them between data centers to reduce costs.
System administrator. I maintained the network, run servers and workstations, installation and configuration of hardware. In several ocasions I managed routers, Xen servers, and install and configure software and other minor tasks for our clients abroad.
Developer. I wrote the backend of the Xarope project, a Xen based system for offering hosting for Zope/Plone sites. This project has been released under the GPL.
System administrator. I maintained the network, run a small server/router/firewall and helped maintaining the workstations.
System administrator. I installed and maintained a Debian server with Apache and WordPress for news sites and MailMan for mailing lists.
System Administrator. I maintained the network and servers in the faculty. Network services included DNS, mail, spam and virus filtering, HTTP proxy and Web servers. One of the server connected to 4 balanced ADSL lines. Most servers were different Linux distributions.
Freelance system administrator. I maintained Zope and Apache servers running under FreeBSD and Debian GNU/Linux.
Python developer. I worked in a team of 3 python developers. We developed papo (http://papo.vialibre.org.ar/), an ERP for SMEs released under the GPL. We built tools like xot and cimarron.
In my free time, among other things, I'm playing with the idea of approaching Python to shell programming. ayrton simplifies both the execution of commands and the remote execution of code via ssh.
Human readable regular expressions with batteries included. Just another approach to build regexps that you can read back and understand, with a couple of twists: you can debug you regexps and see when they fail to match, and the module has some useful predefined regexps.
Me and a few other pythonistas think that Python needs a development tool that helps you create projects, using templates for different types of projects, install and update its dependencies, check its code, test it, generate common files, register and upload to pypi and more. For that we created pbt, which is mostly a wrapper for lots of other tools, like pip, coockiecutter, unittest and more.
A personalized audio player that started as a way to test KDE's Python bindings, but that grew to also support inline tag edition and collection management.
A mirroring tool that I developed for maintaining a distribution mirror. It aims at maintaining the mirrors consistent, specially when an update does not finish (for example, when the time slot ends, which was the main concern in these particular mirror).
My never-ever-touched-again capstone project. It's a prototype for a distributed filesystem. It includes an implementation of Chord (https://en.wikipedia.org/wiki/Chord_%28distributed_hash_table%29).
In my spare time I'm also an amateur cartographer, designing my own tile based map with publicly available DEMs and Open Street Maps' data and design.