Mihai Tanasescu

Design secure & scalable cloud architectures (AWS, Azure, GCP) | Troubleshoot & unblock projects | Train customers & partners (ACE Instructor) | Trusted advisor for complex multi-vendor & GSP engagements (Accenture, Wipro, Infosys).

Technical Solutions Architect with focus on Datacenter technologies: - Cisco ACI - Cisco Container Platform (K8 on-premises, Multicloud integration) - POCs: ACI, ACI & Openshift integration with focus on deep-dive skills in both products - Architecture, high level discussion regarding integration between various Cisco products and existing environments, migration scenarios and automation possibilities

Consultancy services regarding Juniper products and solutions (main focus on core and edge - hardware/virtual) , concept, implementation, configuration, testing, PoCs, automation, cloud, security. Troubleshooting production issues (also low level, sometimes hunting for a problem inside C code).

Handling the operational aspects related to the IPTV platform (tshoot, configuration changes), VOD Ingest, Reporting. Coaching 2nd level team and solving escalated operational tasks (FTTH - Ericsson & Huawei, TV, VOIP, B2B, Routing issues, Security). Designing and implementing B2B projects (EVPN, Ethernet Link). Lead Engineer in implementing inside my team a new geo-redundant datacenter design which involves: F5 Big IP, Cisco ASAv, Cisco CSR1000v, Cisco UCS, Cisco Nexus, VMWare, Windows AD, EMC Storage.

Network architecture build-up according to our needs (VOIP, disaster recovery, IPTV). Building custom firmware based on Opensource Linux for our client CPEs in order to ensure that we have both good debugging capabilities and means to predict the network evolution. Voip debugging for client problems, traffic flow analysis. IPTV/Multicast design and testing of functionality. Network and services configuration and administration (DNS, Cacti, Nagios, Webhomer). TR069 design and testing.

Led a 19-member team at Ericsson's Backoffice IP department, managing operational status of client IP networks. Oversaw 4 projects, establishing performance metrics, participating in technical/governance meetings, leading hiring, and organizing customized training. Balanced employee objectives with management actions. Gained insight into multinational operations and maintained crucial client relations to ensure business continuity.

I managed the technical team of the Romanian branch of Acceleris, the projects we've been involved in and made sure to achieve each goal according to imposed deadlines. My role was a dual one as I also retained the characteristics of my previous role with Airbites/Swisscom as an IT Consultant regarding both networking (Cisco mostly) and system engineering solutions (mostly based on Sun Solaris, Virtualization - jails and zones -, Linux, SAN, NAS, Squid, Apache, Oracle RAC, Sun Clusters, Windows 2003/2008 ).

Designed Airbites' international backbone (ring topology: Romania, Bulgaria, Poland, UA, Germany) and city MAN networks. Managed peering agreements and configured redundant topologies. Created templates for distribution/access layer equipment. Used OSPF, BGP, spanning-tree (MSTP, PVSTP), MPLS/EoMPLS, QoS (Cisco, Linux HTB, FreeBSD ALTQ/IPFW). Worked with Cisco 7600/12000, Huawei, D-Link, and administered FreeBSD/Linux servers. Involved in ISP service decisions, server configuration, and task automation.

Designed, implemented and offered the necessary training for our customers' networks mostly based on Cisco equipments. Supported the Server Team of the company and took over part of their projects involving Linux Systems. Together with my colleagues I realized the design for the network of Mechel Targoviste and did the implementation and configuration parts. Beside this I made a QOS template setup for Sidex / Mittal Steel Galati to be deployed on a wide scale and then actively took part in its deployment.

Administered Media Sat's network of Cisco equipment (C3750, C2950, C2960, C7200, C6500) and servers (Debian, Slackware, Gentoo, FreeBSD, OpenBSD). Designed solutions for business clients. Debugged PHP issues, adapted MySQL/PostgreSQL configurations, secured servers, and tuned TCP/IP stack. Managed bandwidth with Linux HTB, configured Qmail email servers, handled traffic accounting using netflow, and designed BGP communities system.

Administered servers (Debian, Gentoo, Slackware, FreeBSD, OpenBSD) and Cisco equipment (C3750, C2960). Managed backups (rancid, chora, Bacula), server hardening, TACACS+ AAA, VOIP (OpenSER), BGP (Quagga, Cisco), scripting (Bash/Perl), LMS+MySQL for bandwidth limits, glflow, Cacti, port knocking, mail (Postfix), DNS (bind), Nagios, FTP (Pure-FTP, ProFTPD), firewalls (iptables, ipfw, pf), and QoS (ALTQ, ipfw pipes, HTB).

This first job offered a diverse environment to learn and test solutions. Handled server (Windows/Linux) administration, and network design. Configured services: Windows 2000 AD, Linux firewall(iptables), Samba PDC, email servers (Postfix, Qmail, Sendmail), QoS (HTB, HFSC, CBQ), NFS, NIS, VPN (various), databases (MySQL, PostgreSQL, Oracle), centralized authentication (Samba, LDAP), Quagga/Zebra (BGP, OSPF), DNS (BIND), Apache/Tomcat, Squid, NTP, SNMP, disk cloning, and automation scripting (Bash, Perl, C).