Hartanto Ario Widjaya

Experience

Bank Central Asia

Intern • May 2022 — Jul 2022

Developing an API endpoint for an existing COBOL-CICS-IMS application via z/OS Connect, and performing necessary modification to existing applications to follow business needs.

Open Mainframe Project Mentorship Program

COBOL Programming Course Mentee • Jun 2021 — Aug 2021

Developing 7 new chapters for the COBOL Programming Course hosted by Open Mainframe Project, and handling support from course takers which involves interacting with various technology such as SDSF, Db2, RACF, Zowe and z/OSMF.

Education

Singapore Management University

Bachelor of Science (Computer Science) • Aug 2019 — Jan 2023

Enrolled in the first cohort of Computer Science students, majoring in IT Solution Development with interest in Cybersecurity.

Projects

COBOL Programming Course

Committer • Nov 2021 — Present

As a Committer for the COBOL Programming Course, I am responsible for ensuring that the project moves forward at the right pace while staying aligned to its primary intent, which is to offer accessible COBOL on z/OS education at no cost to the users through the use of open-source toolings.

Skills

COBOL

I have working experience coding and managing enterprise-level COBOL applications on z/OS. My COBOL Code Portfolio is linked at the Additional Links section below.

DevOps

I have working experience with DevOps practices and tools, and integrating them for mainframe-based development.

Java

I have working experience with Java and the Spring Boot framework as part of a school course where we created a back-end REST API for a simulated bank using Agile methodology.

Presentation

I'm comfortable doing presentations in front of a live audience, and have experience doing so. Some of the events I've presented at are linked below.

REXX

I have experience coding in REXX to establish a TCP connection to a chat server application written in Java as a task for a school course.

System Administration

I have working experience with Linux and z/OS system administration, handling issues that occurs during operation of the system.

Recognition

IBM zSystems Champion 2023

IBM • 2023

One out of 80 people in the world awarded in recognition of their expertise and contribution as a thought leader to the IBM zSystems community over the past year.

Regional Winner for IBM zStudent Contest 2022

IBM • 2021

I'm the Asia Pacific Regional Winner for IBM zStudent Contest 2022 out of over 25,000 other contestants. My submission is linked at the Additional Links section below.

TechChannel Rising Stars 2022

TechChannel • 2022

One out of seven people who is recognized for pushing boundaries and innovating within the zSystems community while being on the platform for less than five years.

IBM zSystems Champion 2022

IBM • 2022

One out of 83 people in the world awarded in recognition of their expertise and contribution as a thought leader to the IBM zSystems community over the past year.

Global Winner for IBM Z Student Contest 2021

IBM • 2021

I'm one of the three person in the world selected as the Global Winner for IBM Z Student Contest 2021 out of over 27,000 other contestants. My submission is linked at the Additional Links section below.

Global Winner for Master the Mainframe 2020

IBM • 2020

I'm one of the three person in the world selected as the Global Winner for Master the Mainframe 2020. My Grand Challenge submission and technical reflection is linked at the Additional Links section below.

Associations

Open Mainframe Project

Open Mainframe Project Ambassador • Jan 2022 — Present

Advocating for open source technologies in mainframe, and helping others learn about it.

Open Mainframe Project Mentorship Program

COBOL Programming Course Mentor • Jun 2022 — Aug 2022

Mentoring a student through open source contributions to the COBOL Programming Course.

IBM

IBM zSystems Ambassador • Jun 2020 — Dec 2021

Advocating for IBM zSystems among the student community, and providing technical support for others through their z/OS journey.

SMU Ellipsis

Coders' Assembly Mentor • Sep 2020 — Nov 2021

Mentoring a total of 10 Computer Science freshmen with their journey into the introductory programming courses taught at SMU, which includes C and Java.

PPI Singapura

Head of Data Administration and IT • Oct 2020 — Oct 2021

Managing a team of 6 to maintain PPI Singapura's website and database, along with executing a census which to-date have increased PPI Singapura's membership by more than 300 people.