Telecommunication engineer, husband with two kids, writer of five books, blogger, Perl/Python/Ruby on Rails (RoR)/Lua programmer, currently working and living in Singapore.
Bachelor of telecommunication engineering, graduated from Telkom University Bandung, Indonesia.
Ericsson circuit switched (CS) domain (MSC-s and M-MGw) and packet switched (PS) domain (Native/Virtual SGSN-MME, Native/vIPWorks (iDNS, eDNS, AAA)), WMG/EPG, Diameter Edge Agent (DEA), 5G Core Network (5GC) specifically Packet Core Controller (PCC - AMF&SMF) and Packet Core Gateway (PCG - UPF).
Programming language such as Perl, Python, Ruby on Rails (RoR), Lua, Expect, HTML, CSS, Javascript, and Shell Script.
GNU/linux System Administrator such as Mail server (Postfix, Dovecot, SendGrid, SPAM&Virus detection using MailScanner and Spamassassin), DNS server (BIND), High Availability DB/System using DRBD, Web server (Apache), Sambar Server, SFTP server, openLDAP, Self-hosted Git service using Gogs, SSL, Squid Server, Nagios Monitory System, Bacula System Backup, Traffic Monitoring using Munin, Mailgraph, and IPtables.
Document preparation system, diagram, presentation, and flowchart such as LaTeX typesetting, Microsoft Word, Powerpoint, Visio, and Omnigraffle.
Software or programming language module for graph visualization such as Gnuplot, Highcharts, Graphviz, and Matplotlib.
Data analysis and manipulation tool such as Pandas, and Microsoft Excel.
Text editor for programmer such as Vi/Vim, Emacs, Padre, and Pycharm.
Ericsson local support for PS core nodes (Native/Virtual IPWorks, Native/Virtual SGSN-MME, Diameter Edge Agent (DEA), EPG/WMG) and 5G Core Network (5GC) specifically Packet Core Controller (PCC - AMF&SMF) and Packet Core Gateway (PCG - UPF).
Handled Singapore Telecommunications (Singtel) for GMSC modernization project, MSS (MSC-s and M-MGw) software upgrade, GMSr implementation and verification, M-MGw hardware expansion, IN nodes integration, VAS nodes integration, cVAS nodes integration, Native/Virtual SGSN-MME, Native/vIPWorks (iDNS, eDNS, AAA).
Prepared MSC-s Data Transcript, M-MGw Script, Native/Virtual SGSN-MME script, Native/Virtual IPWorks (iDNS, eDNS, AAA) script, Methode of Procedure, and executed the MOP. Created software for operation/maintenance and KPI/Statistics.
Performed core switch (CS) network audit and optimization for XL Axiata, developed software for supporting core network assessment and created network topology based on data from MSC-s.
Interoperability testing (IoT)/multi vendor verification for the diameter signaling in IMS network. Configured all protocol stacks for diameter signaling on Diameter Routing Agent (DRA) and Diameter Edge Agent (DEA) machine using redhat server (HP blade) for testbed and production.
Proof of concept MSC-s Blade Cluster for Smart Communications Inc. Philippines. Produced design for MSC-s, CCR excel sheet, and Data Transcript (DT).
Delivered Perl programming language training.
Network roll out for Telkomsel operator (GSM and UMTS projects). Prepared design, MSC-s DT and M-MGw script, deployed on production nodes.
Network roll out for Telkomsel operator (GSM and UMTS projects). Prepared design, MSC-s DT and M-MGw script, deployed on production nodes.
Performed RNC and BSC rehoming based on customer needed for rebalancing processor load, capacity of MSC-Server, M-MGw, and SGSN.
Software upgrade SR10 to SR12 for monolithics MSC, HLR, and EIR, hardware expansion and replaced faulty hardware, patches implementation.