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Juan Diego Chimienti

Updated version available at https://github.com/Juanchimienti/cv

Personal Data

[email protected]
https://ar.linkedin.com/in/juanchimienti

Education:

  • Bachiller Instituto Berthier
  • Software Engineering, up to third year at Universidad de Buenos Aires

Languages:

  • Spanish, native language.
  • English, advanced level.

Experience:

Freelance SRE/Devops

March 2018 to present

Working as a freelance SRE to help companies implement and improve their infrastructure. The main clients being Skilynx, Grupo Octubre, Axometrica, Gehl, HXE, Poringa, TicketHoy, Impremedia, Djmagla, Bancolombia.

Skilynx

Skilynx is "The gold standard for resort experiences". The role here started mainly as DevOps for the backend app and today I'm also adding value as an Android developer. The backend is built on top of CakePHP and uses RDS Aurora, Elastic Beanstalk and ElastiCache.

Grupo Octubre

In Grupo Octubre I started as SRE for the Pagina/12 Newspaper. I found a neglected infrastructure, without automation for most of the process, even deploys where done manually. I migrated the whole Infrastructure to a Kubernetes (GKE) using Helm Charts for all the services, Jenkins for CI/CD, Prometheus and Grafana for monitoring. Then we as a team started helping other sites inside the group but they where hosted on SaaS/PaaS so the role shifted.

Others

Many smaller projects with few different roles. For example as a Project Manager for Gehl where I help the UX/UI & Dev teams deliver new features to a Ruby webapp. Then for HXE I designed and implemented the whole infrastructure for a new app to survey companies carbon emissions. Then as developer for Bancolombia where I made some integrations with google calendar/yahoo weather etc on Python for a virtual assistant that would greet you when you arrived at the office.

Taringa!

February 2014 until november 2017, Head of site performance & reliability

From Head to sysadmin to SRE in milliseconds would be an accurate way to describe the position. A very small team with huge challenges.

More than 150 servers born and raised with little (to none) automation and even without versioning in the configuration files handled by a team of two. Up to 60 million users accessing the site each month, 50,000 requests per minute and the challenge to stop treating servers as unique pieces and automating the provisioning tasks.

Technologies Used

GNU/Linux, Mysql, nginx, kubernetes, memcached, zabbix, thumbor, docker, redis, sphinx, fabfile, vertx, MongoDB, rabbitmq, nodejs, prometheus, grafana, Cloudflare, ELK, AWS (ec2,s3,rds),Google Cloud (GKE, Google Cloud SQL)

GrupoMost

August 2004 until january 2014, Infrastructure and technology team

In the almost ten years at GrupoMost I had different positions with different tasks, from installation and configuration of different technologies to teaching, guidance and coordination of the team. There were 4 different periods marked by the tasks and responsibilities. The first as a sysadmin, then as a DBA, the third as head of the Database Team (a three DBA team) and finally as head of technology in charge of 10 nerds.

December 2012 - January 2014 Head of technology team

The biggest challenge here was to adjust the needs of the different clients to the best technical solutions within the budget. The next one was to help everyone understand what our team did and help the team get better. We accomplished that by implementing detailed task logging and measurement. This allowed the team to see which tasks were taking most of our efforts and the rest of the company which clients were more demanding.

July 2010 - June 2012 Head of DB Team

In this position I started to learn my management, leadership and coaching skills. The team was composed by 2 junior DBAs and 1 senior. A big part of the day to day was to teach and coach the juniors, one of which studied and approved the OCA Certification.

Technologies Used

GNU/Linux, Oracle Database, Mysql, Oracle Enterprise Linux, Oracle RAC, Dataguard, postgreSql, Oracle APEX, Oracle Weblogic.

2007 - June 2012 DBA

Following the needs of the area and the company I started to get more specialized in databases, mainly Oracle DB.

  • Installation, configuration and maintenance of Oracle DB (in-house and in clients) versions 8,9,10 & 11.
  • Installation, configuration and maintenance of Real Application Clusters(RAC).
  • Installation, configuration and maintenance of standby with Dataguard.
  • Development and maintenance of standby synchronization scripts for Oracle standard edition.
  • Analysis of Infrastructure to propose license adjustments/improvements.
  • Installation, configuration and maintenance of mysql and postgreSQL.
August 2004 - 2007 Sysadmin

I started with little GNU/Linux knowledge here and started learning in a daily basis.

  • Installation, configuration and maintenance of Linux and Unix (mainly solaris, AIX)
  • Support for different projects inside the company
  • Migrations and deployment of websites, DBs and Java Applications.
  • Installation, configuration and maintenance of Oracle collaboration suite
  • Configuration and maintenance of firewall scripts implemented with iptables
  • Configuration and maintenance of VPN implemented with ipsec
  • Configuration and maintenance of open source services (samba, cups, OpenLdap, NFS, postfix, spamassassin, clamav)
  • Installation, configuration, monitoring and maintenance of Bacula backup system.
  • Support for application develped in multiple languages/technologies (java, php, perl, python, Forms 6i, Forms 10g)
Technologies Used

GNU/Linux, Oracle Database, Apache, Mysql, IAS, bacula, nagios, mantis, openvpn, Oracle Grid, Oracle Forms&Reports, Aix, Solaris, postfix,qmail, Debian, RedHat, Lamp, bash scripting, gnawrl, samba.

Courses

  • OCA, Oracle Certified Associate
  • GNU / LINUX (Administración de Redes) UBA a cargo del LUGFI