About Me

I am living in Singapore and working at Ericsson Singapore. My area of expertise are Ericsson mobile circuit switched (CS) domain and packet switched (PS) domain. I have been working on this area (CS domain) more than 15 years at Siemens Indonesia, Ericsson Indonesia, Ericsson Philippines, Uangel Indonesia, Huawei Managed Services (HS) Indonesia, and Ericsson Singapore.

Joined Ericsson Singapore as experienced service engineer (CS domain) under project team in January 2016. From July 2019 to November 2020, I had been assigned to handle Ericsson packet switched (PS) domain such as Native/Virtual SGSN-MME and Native/Virtual IPWorks (iDNS, eDNS, AAA) related works besides my main tasks in CS domain as part of competence development to work in multi-domain.

In December 2020, moved to Ericsson Local Support (ELS) department as customer network support engineer for PS core nodes (Native/Virtual IPWorks, SGSN-MME, DEA, EPG/WMG) and 5G Core Network (5GC) specifically Packet Core Controller (PCC - AMF&SMF) and Packet Core Gateway (PCG - UPF).

Perl, Python, Ruby on Rails, and Lua programmer who has been writing many codes especially to support my involvement in many projects. The codes that I have written are actually trying to speed up the tasks and to avoid human error. One of my codes also using Java language even though I don't really like to write codes in Java and still prefer using either Perl, Python, or Lua.

System administrator - sysadmin (Debian GNU/Linux) for my collocated server since 2007 and starting December 2018 onwards using VPS to serve kawananu's mail server, web server, openLDAP, private git server to store my source code that I have written, and FTP server.

Tech writer who has been writing some IT books and still have a dream to publish a diary book for my wonderful life journey. I want it as a book of memories for my children. I have made a draft for it but not able to complete it yet. I hope this dream can come true within the next few years later.

In January 2015, I started my own book publishing company kawananu to publish the books with my own style. Bahasa Pemrograman Perl - Konsep, Algoritma, dan implementasinya was the first book using LaTeX typesetting published by kawananu. Kawananu has also published books from other writers such as Dasar Sistem Telekomunikasi, Manajemen Rantai Pasok, Analisis dan Perencanaan Sistem Informasi dengan UML.

Over the last few years, I have been learning Big Data (Hortonworks - Hadoop, Pig, Spark, Hive, Hbase, etc.) and machine learning (ML) as these two subjects are currently a hot topic in information technology area.

Apart from being an engineer, I enjoy blogging, cycling with my two kids and wife along the coast, gathering with family, jogging, and travelling back to my hometown to meet our parents and family there.