Hartanto Widjaya
Senior Consultant (Systems) at CPF Board
Singapore
Summary
🤩
Rockstar🎓
Top SchoolHartanto Widjaya is a Senior Consultant (Systems) with a decade of experience building and maintaining critical infrastructure in Singapore, currently ensuring operational resilience at CPF Board. A Computer Science student at Singapore Management University specializing in IT Solution Development and Cybersecurity, he pairs modern systems knowledge with rare legacy expertise—he's an active COBOL committer who contributes to the Open Mainframe Project's widely used COBOL Programming Course. His hands-on work includes modernizing COBOL labs and integrating COBOL with Db2, reflecting a practical ability to bridge legacy mainframes and contemporary data systems. Known in the IBM Z and Open Mainframe communities as a helpful maintainer, he combines operational reliability with a passion for teaching and open-source collaboration.
10 years of coding experience
Bachelor of Science, Bachelor of Science at Singapore Management University
Stackoverflow
113reputation
583reached
2answers
1question
Github Skills (8)
cobol10
data-integration9
sql-database9
sql9
databases9
php6
google-app-engine6
telegram-bot6
Programming languages (10)
Github contributions (5)
openmainframeproject/cobol-programming-course
Jan 2021 - Jan 2023
Training materials and labs for a "Getting Started" level course on COBOL
Role in this project:
Back-end Developer
Back-end DeveloperContributions:70 reviews, 106 commits, 69 PRs in 2 years
Contributions summary:Hartanto primarily contributed to the COBOL programming course by modifying and updating COBOL source code files. Their work included renaming and modifying COBOL lab files, replacing `STOP RUN` statements with `GOBACK`, and fixing merge conflicts. The user also added and updated files related to Db2 labs, demonstrating proficiency with integrating COBOL with database systems.
trainingcobolcobol-programmingtraining-materials
tanto259/tanto259.github.io
Aug 2016 - Feb 2017
Contributions:637 pushes, 1 branch in 6 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.