Jefry Jacky

Work Experience

PT. Rockliffe Indonesia

Software Engineer (2013 - Present)

Developing chat application in Android platform the chat application is like modern chat such as Whatsapp or Line but the difference that this chat application is for enterprise, which we can connect to their XMPP Server. My responsibilities include:

• Develop new feature, Identify user requirement, identify user experience problem, identify application performance problem, fix bugs, and write a small test.
• Communicate with product owner developer, QA, UI designer, Marketer about the product.
• And sometimes I also help for fix iOS bug and create a website for marketing the product.

Selected Accomplishments:

• Successfully developed this features GroupChat, VoIP, Voice Message, Location, Peer to Peer File Transfer.
• Proposed to change of how the security lock of application work to improve the user experience. Proposed was accepted and we never heard about this issue from the user again.
• Reorganized all the application resource, resulting reduction of the application size 1MB and reduced custom application style effort from 1 week to 1 day.
• Identified large memory consuming and optimize it and resulting memory usage in Android reduce 50% and in iOS 70%.

Projects

1. AstraChat (2014 - present)

I am working for PT. Rockliffe Indonesia to develop AstraChat. AstraChat is a lightweight standalone Jabber (XMPP) Client application that connects to your XMPP server without any proxies in between.

Technologies: Android, Java, iOS,Objective C

Protocols: XMPP, NAT-PMP, STUN

2. StealthChat (2014 - present)

I am working for PT. Rockliffe Indonesia to develop StealthChat. StealthChat is a secure app for calling and chatting with your friends and partners. With Advanced encryption technology, your phone calls and chat messages are private.

Technologies: Android, Java, iOS,Objective C

Protocols: XMPP, NAT-PMP, STUN, Crypthography

3. Smart Waker (2017 - present)

Smart Waker is a product that I build during my free time. This alarm can be used for wake up us every morning, and also we able to configured it to be silent during a holiday. This product has been launched to play store but only available in Indonesia.

Technologies: Android, Java

Skills

1. Java Standard Edition (Proficient)
2. Android (proficient)
3. Kotlin (beginner)
4. Objective-C (beginner)
5. iOS (beginner)
6. HTML, CSS, JavaScript, Bootstrap, jQuery (prior experience)
7. C and C++ (prior experience)
8. Spring Framework (beginner)

Certification

Google Certified Associate Android Developer

Education

1. Master of Computer Science (2013 - 2015)

   Bina Nusantara University, Jakarta

2. Bachelor of Computer Science (2009 - 2013)

   Bina Nusantara University, Jakarta

Award

1. Outstanding Student Odd Semester 2009/2010

   Bina Nusantara University – Jakarta, Indonesia

Languages

1. Spoken languages: Bahasa Indonesia, Mandarin, English, Hakka, Teochew and Hokkien.
2. Writen languages: Bahasa Indonesia and English.

Organization

Bina Nusantara Mandarin Club (2009 - 2012)

Organize Mandarin class for Bina Nusantara University student and organize an event for promoting Mandarin and Chinese culture to society. In this organization, I have been assigned to a different role to improve our hard skill and soft skill such. One of the projects that I worked for this organization is National Mandarin Competition registration website.