Resume

Telecommunication engineer, husband with two kids, writer of five books, blogger, Perl/Python/Lua programmer, currently working and living in Singapore.

Education:

Bachelor of telecommunication engineering, graduated from Telkom University Bandung, Indonesia.

Professional Experience:

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 Skills:

Programming language such as Perl, Python, Lua, Expect, HTML, and Shell Script.

System Administrator:

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 and Typesetting:

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:

Data analysis and manipulation tool such as Pandas, and Microsoft Excel.

Text Editor:

Text editor for programmer such as Vi/Vim, Emacs, Padre, and Pycharm.

Work Experience:

Customer Network Support Engineer

Ericsson Singapore Pte Ltd, Dec 2020 – Present

Singapore

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)

Experienced Services Engineer

Ericsson Singapore Pte Ltd, January 2016 – November 2020. 4 Years, 11 Months

Singapore

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.

Senior Core Network Performance Engineer

PT. Huawei Services Indonesia, June 2015 – December 2015. 7 Months

Jakarta, Indonesia

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.

Senior Network Engineer

PT. Uangel Indonesia, February 2015 – May 2015. 4 Months

Jakarta, Indonesia

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.

Experienced Services Engineer

Ericsson Philippines, May 2014 – September 2014. 5 Months

Manila, Philippines

Proof of concept MSC-s Blade Cluster for Smart Communications Inc. Philippines. Produced design for MSC-s, CCR excel sheet, and Data Transcript (DT).

Tutor

PT. Ericsson Indonesia, April 2013 – September 2014. 1 Year, 6 Months

Jakarta, Indonesia

Delivered Perl programming language training.

Experienced Services Engineer

PT. Ericsson Indonesia, April 2011 – April 2014. 5 Years, 1 Month

Jakarta, Indonesia

Network roll out for Telkomsel operator (GSM and UMTS projects). Prepared design, MSC-s DT and M-MGw script, deployed on production nodes.

Services Engineer

PT. Ericsson Indonesia, June 2008 – March 2011. 2 years, 10 Months

Jakarta, Indonesia

Network roll out for Telkomsel operator (GSM and UMTS projects). Prepared design, MSC-s DT and M-MGw script, deployed on production nodes.

Back Office Engineer, Managed Services

PT. Ericsson Indonesia, January 2007 – May 2008. 1 Year, 5 Months

Jakarta, Indonesia

Performed RNC and BSC rehoming based on customer needed for rebalancing processor load, capacity of MSC-Server, M-MGw, and SGSN.

O&M Engineer

PT. Siemens Indonesia, January 2006 – December 2006. 1 Year

Jakarta, Indonesia

Software upgrade SR10 to SR12 for monolithics MSC, HLR, and EIR, hardware expansion and replaced faulty hardware, patches implementation.