Roles: As Yenlo Managed Services division was acquired by Sentia and incorporated into their operations. For two years I was mainly focusing on the same roles I had at Yenlo. After Yenlo clients were dissolved into Sentia and split up into its different teams, process which I have overseen and accomplished as a handover. I have migrated and dismantled successfully, without impact on clients, Yenlo's 2 data center operations.

Around 2017 I was "recruited" to be part of Sentia's Infrastructure where I have developed a major monitoring platform with integrated systems comprising of VMWare, Zabbix, Percona xtradb, HAProxy, PowerDNS, Pacemaker, Elasticseach, Kibana, Logstash, Grafana, a range of in house software developed by different teams where I have tied up a front end based on Angular 7 that helps to make sense of the whole work flow for incidents and SLA/SLR reports.

The platform extends over two geographical locations and all the data is synchronized where operations can be shifted from on data center to another automatically. I also help to provide support at Sentia's infrastructure as a whole lending hand whereas it makes necessary.

Public presentation about work

Roles: Provide expertise on configuration and monitoring of Linux servers and infrastructure in a cloud environment. Zabbix, VMWare, Perl scripting, development of an Orabbix (Oracle monitor for Zabbix) substitute called Perobbix made in Perl.

Responsible over monitoring of client networks and infra-structure providing also training to create a mindset on monitoring and best practices. Infrastructure management and configuration including BIGIP (F5), Equallogic Storage, Juniper switches, other Juniper equipment, cisco and other brands firewalls including iptables and more.

Networking problems detection and resolution, best practices and optimization. Investigation and analysis of several different practices and optimization. Investigation and analysis of several different types of problems. Development of High Availability environments. Build up of the whole backup environment using TL4000 and BackupExec (Symantec) and vRanger.

Implementation and maintenance of all the necessary systems that builds up a network infra-structure involving a large range of software from anti-spam, IDS, monitoring, remote logging, ticketing systems, databases and so forth. Most recently developing a puppet environment.

Public presentation about work

Roles: Development and Administration of monitoring and auditing systems engulfing servers Netware OES, Linux and Microsoft with Zabbix, Sentinel and Sentinel Log Manager – Application and Scripting development in Perl, PHP and Bash for a wide range of reasons including modules for Zabbix monitoring improvements – Package updating system with mirroring of packages from Novell and Dell for Yast and ZLM – Linux and Netware support specialist – Providing support for 2^nd line analysts – Development of IP Addresses organization software – Laboratory with several different solutions from virtualization to virtualized bandwidth control to simulate high latency on remote branches – supporting all the IT teams to integrate open source systems with the available Dell hardware.

Roles: Local and regional network and infra-structure administration – South Central and North America support and engineering according to Amsterdam (central) standards, helping on the installation and configuration of new offices in the region – Systems Specialist – PBX Administration – Development of SCNA Nagios monitoring system.

Roles: Linux and Netware specialist, providing solution and consulting in a wide variety of clients and company sizes – several different distributions – Networking problems – Troubleshooting and regular problem solving environment.

Role: Project Developer of commercial art gallery administration system in Perl, AJAX, MySQL – Consultant: Linux / Networking / Programming.

Roles: Development of an automatized firewall from IPChains / IPTables as a product with VPN capabilities using IPSwan (what later became FreeSwan) based on open source software, with a basic Linux distribution – installation and support of several different types of Linux servers for different purposes (Routers, Firewall and Mailing systems mainly) – Overseeing, managing and teaching a group of professional programmers and trainees, coordinating development and teaching newcomers to Linux into basic tasks.

Roles: Corporate support for a mixed Linux and Netware network, integrating 6 branches from Brazil's countryside, restructuring the network completely and expanding its functionality to Internet – local users support – complete IT Infrastructure administration;

Roles: Software development in Dataflex for the Brazilian paper sector, network and IT supporting role for several companies around Sao Paulo area in the the first year – Between 1996 and 1998 helped into building up a Internet Service Provider (Planet House BBS) with a BBS system called WorldGroup Galacticomm, based in Netware and Linux systems as well, dealing with RAS, Multi Protocol Routers and a diverse hardware and software systems involving a ISP – Among other things we did the development of one of the first gateways from Mail to Fax or Pager from São Paulo area.

Roles: Maintaining a small network starting with 3 computers and expanding to 7 computers – upgrading systems – migrating networking systems from Lantastic to Netware 3.12 – payroll and accountant systems operator and responsible for its maintenance.