[05/2023 - ] Site Reliability Engineer - Core Cloud Services. Cisco Meraki.
Operational processes improvement proposals, toil identification and solutions implementation. SLIs collection, processing and submission for representation using Airflow DAGs. Observability tooling to define SLOs and alerting. Custom Terraform modules modification leveraging AWS resources for a Netbox deployment and upgrades. Anycast DNS roll out assistance. Container vulnerability patching. On call incident response and postmortem participation.
[07/2021 - 05/2023 ] Site Reliability Engineer - Infrastructure as a Service. Cisco Meraki.
Establishment of SLOs for machines provisioning life cycle latency, with per state latency breakdown and key indicators. Provisioning operations, debugging and patching, Assist with the company infrastructure growth requirements despite the pandemic hardware shortage. Deployment of Airflow in dedicated servers, setup of a secret backend, and supporting custom docker operators Gitlab repositories with CI/CD. Ansible roles and playbook development with molecule testing. OpenStack infra administration.Vulnerability addressing for PCI compliance. Oncall engineer.
[04/2021 - 07/2021] Senior Systems Engineer - Containerisation lead. Liverton Security.
Migration of multiple legacy application VM setups into multiple independent container groups, for increased resiliency, scalability and maximization of resources utilization. Creation of Dockerfiles from scratch, including custom multiprocess entrypoint scripts, integration of containers builds in CI/CD. Deployments and seamless customer migrations using ansible, docker-compose and custom migration scripts. Translation of legacy databases and systems data into docker volume storage.
[05/2020 - 09/2020] Network Expert Consultant - Project lead. NetValue.nz.
Complete overhaul and simplification of a highly intertwined network at the Auckland Albany datacenter. Changes simulation using GNS3 for seamless live migrations without any IP changes. Setup of new HA routers with multiple ipv4/6 transit providers for domestic and international traffic. BGP peers blending with traffic engineering, OSPF for internal routes distribution. Redesign and change of topology for the downstream distribution network, development of a procedural configuration generation python script. Organization of intensive afterhours changes that required downtime. Documentation, recommendations on further monitoring and improvements for the future.
[04/2010 - 02/2020] Expert GNU/Linux Administrator - Network Admin. Rimuhosting.com.
Integral customer support: technical, billing, sales and quoting. Custom design and implementation of solutions to size in a vast range of technologies, from single LAMP setup to HA load balancing and data replicating clusters. Analysis of hardware, network and scalability requirements along with development, deployment, ongoing maintenance and support.
Management and maintenance of infrastructure over 9 global datacenter sites locations, remote hands engagement, high end hardware maintenance. Xen Host servers, hosting stack administration, debug, development, upgrade, profiling and optimization. Provisioning of bare metal and VPS servers. Creation or modification of software to aid administration and configuration management. Systems integrator and project lead for satellite services such as 25mail.st, bakop.com and zonomi.com. Backend design, development and ongoing support.
Network Admin, configuration and maintenance of networks in multiple colocations for Cisco Meraki with extensive requirements, such as multiple ISPs, WAN links for inter zone traffic and VPNs using high end hardware. In person 100Gbit network deployment, including on site cabling, configuration and administration. Management network design and VPN access point implementation. Network Metrics and Monitoring.
On Call engineer. Providing after hours support on critical issues.
[03/2010 - 03/2010] Senior GNU/Linux Administrator. Fishpond.co.nz.
Infrastructure network redesign and reorganization, wireless networks deploy. Hardware assembly, upgrading and reinstall of operating systems. Configuration of printing and voip servers. External temporary contractor.
[12/2008 - 11/2009] Senior GNU/Linux Administrator. Dos Monos.
E-marketing solutions, setup of high performing email servers, web servers for landing pages, dns and firewalls. Creation of advanced scripts for extraction and manipulation of data. Involved in the development of a resource balancing system for email sending. Maintenance of the web platform guiaoleo.com.
[06/2008 - 10/2008] Senior GNU/Linux Administrator. 3DGames.
Integral web platform administration of www.3dgames.com.ar, containing servers of FTP, HTTP, SMTP, DNS, Firewalls, virtualization. Design of network topologies for High Availability, analysis and deployment of security policies. High-end hardware assembly for database servers.
[02/2007 - 05/2008] Semi-Senior GNU/Linux Administrator. Assekuransa.
Administration and maintenance of the online sales platform, Email Servers, File Servers, Web Servers, DB Servers, Firewall and security. Monitoring systems and backup solutions. Assembly and maintenance of hardware for servers, Server Room design and setup. Administration of PBX and VOIP. Design and deployment of custom electronic hardware.
[12/2005 - 01/2007] Junior GNU/Linux Administrator. IFL Argentina.
Assembly and maintenance of desktops, setup of File servers, Email Servers, Spam Filter Gateways, VPNs, Virtualization, Firewalls.