I am living in Singapore and working at Ericsson Singapore Pte Ltd as Experienced Services Engineer. My expertise is in Ericsson mobile circuit switched (CS) domain (MSC-s & M-MGw).
I have been working on this area more than 15 years within Ericsson Indonesia, Ericsson Philippines, and Ericsson Singapore. Since July 2019, I've been handling Ericsson packet switched (PS) domain (Native/Virtual SGSN-MME, Native/Virtual IPWorks (iDNS, eDNS, AAA)) at Ericsson Singapore.
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 reading tech & social history books, blogging, cycling with my two kids and wife, gathering with family, jogging, and travelling.