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Hartanto Ario Widjaya
Systems Engineer | -
Singapore
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IBM z/OS Mainframe Practitioner
IBM
Introduction to System Programming on IBM Z
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IBM Z Xplore - Advanced
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Fundamentals of Scalable Data Science
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Applied AI with DeepLearning
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PagerDuty Foundational Practitioner Certification
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Advanced Machine Learning and Signal Processing
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Master the Mainframe 2020 - Level 2
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Getting Started with Enterprise Data Science
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Introduction to Enterprise Computing
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COBOL Programming with VSCode
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Getting Started with Enterprise-grade AI
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IBM Developer for z/OS Basics
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Master the Mainframe 2019 - Part 2
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LFC191: Open Source Licensing Basics for Software Developers
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LFC101: Inclusive Speaker Orientation
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Getting Started with Cloud for the Enterprise
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Open Source Origin Stories: Adventures in Hybrid Cloud, AI Ethics, and Open Source Technologies
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Interskill - Mainframe Specialist - IBM Mainframe Environment - Fundamentals 2.4
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Security Analyst Fundamentals Specialization
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ADDI Essentials
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Cloud Native Security Conference - DevSecOps
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Open Source Foundations
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Explorations into Mindfulness
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z/OS Introduction & Workshop
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Cloud Pak for Integration Essentials
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Extreme Networks Associate - Introduction to Future Networking
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Cloud Native Security Conference - Data Security
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Getting Started on Mainframe with z/OS Commands and Panels
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LFC102: Inclusive Open Source Community Orientation
The Linux Foundation
Advanced Data Science Specialization
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Technical Administrator Career Fit Achievement
MyInnerGenius
Advanced Data Science Capstone
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Cloud Native Security Conference - App Security
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Basic System Programming on IBM Z
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IBM Champion 2025
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Getting Started with Threat Intelligence and Hunting
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z/OS Mainframe Practitioner
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Technical Analyst Career Fit Achievement
MyInnerGenius
Customer Engagement Career Fit Achievement
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Technical Specialist Career Fit Achievement
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Master the Mainframe 2019 - Part 3
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IBM Champion 2024
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Networking on z/OS - Foundations
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Architecting Applications with IBM Z
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Interskill - Mainframe Specialist - REXX Programming - Experienced
Interskill Learning
LFC192: Generating a Software Bill of Materials
The Linux Foundation
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