Our brains can’t remember everything forever, so I created this library to store my knowledge and experiences. It helps me revisit and refresh my memory whenever I need it.
My Journey – Adapting, Overcoming, and Growing
I started my career as a Fiber Optic Field Engineer, working on backbone and field projects. The job was tough, physically demanding, and full of challenges. I knew I wanted to grow beyond just fieldwork, so I made a decision—I would study networking and push myself into something bigger. Every day after work, I dedicated my time to learning Cisco CCNA on Udemy, pushing through the long hours of study and practice. Eventually, I passed my certification, and that opened the door to a Network Engineer role at Biznet ISP Indonesia. I stayed with the company for five years, gaining hands-on experience in networking, troubleshooting, and ISP operations.
After five years, I was ready for the next step. I joined Multipolar, and this is where my technical skills expanded beyond just networking. I learned Next-Gen networking such as Cisco ACI, how to develop custom monitoring tools using programming, diving deep into scripting and automation. Instead of just relying on existing tools, I explored open-source and scalable solutions like Zabbix and Grafana, fine-tuning them to improve network monitoring. My curiosity pushed me further into cloud technologies, databases like SQL and NoSQL (MongoDB), and even Elasticsearch for handling large-scale data.
One of the most interesting challenges I faced at Multipolar was network virtualization. I worked with Cisco ACI but also explored open-source solutions like VyOS, giving me a broader perspective on how different vendors approach VXLAN EVPN. This led me to a deeper understanding of software-defined networking, and I took it even further by developing a custom GUI management tool using Node.js and React.js to make managing VXLAN EVPN more efficient. also, company has given honor responsibility to take lead project Cisco Nexus Dashboard and Automation which is first implementation in South-East Asian with great result.
My next move was to Smartfren Telecom, where my role evolved significantly. Here, my work was no longer just about networking—I had to understand the full picture of IT infrastructure. I worked on cloud platforms like AWS, Azure, and Google Cloud, optimizing performance and cost efficiency. Infrastructure design became a key part of my responsibilities, ensuring systems were not only reliable but also scalable and future-proof.
Automation became a crucial part of my daily work. I was no longer just configuring networks manually—I was automating deployments using Ansible, Terraform, and Python, making operations smoother and reducing human errors. I also got hands-on with IoT solutions, integrating sensors and using data analytics to improve operations. Every challenge I faced pushed me to think beyond traditional networking and embrace a broader tech-first approach.
Later, I moved to Seabank as part of Sea Group Ltd in Singapore, a major step in my career. This role demanded a deep understanding of enterprise networking and security at a global scale. I focused on SD-WAN optimization and automation, working on network routing strategies, security policies, and high-availability network solutions. Managing Fortinet and Palo Alto firewalls became part of my daily responsibilities, ensuring the company’s network was not only stable but also secure against evolving cyber threats.
At Sea Group, I also had the opportunity to becoming a Network and Infrastructure Manager, with this role I take lead with my team to develop internal tools that integrated business needs with IT infrastructure, streamlining operations and improving efficiency. Whether it was ensuring reliable network operations, handling new branch rollouts, or leading banking partner integrations, I was always adapting, learning, and refining my expertise.
A year into my role, the company needed someone to spearhead network automation, and I saw it as the perfect opportunity. Since I had some C programming experience from college, I built on that foundation and fully stepped into the world of network automation. This allowed me to combine all my previous experiences—networking, programming, cloud, and security—into a single focus area where I could drive real innovation.
Why This Library?
With over 10 years in engineering, I’ve worn many hats and adapted to different technologies and roles. To keep track of everything I’ve learned, I built a Personal Knowledge Management (PKM) system. I first started with OneNote, but as my notes grew, I needed something more structured—so I moved to Obsidian.
This year, in 2025, I decided to share some of my notes here. I hope they help others, and I’d love to hear feedback. I'm always open to learning, growing, and improving—because that’s the mindset that got me here.