UPDATE (2023) : Indonesian team have won another 3 Silver Medal, and 1 Bronze Medal @ 2023 International Olympiad in Informatics, and 2 Silver Medal, and 2 Bronze Medal @ 2023 Asia Pacific Informatics Olympiad.--------------trained highly talented Indonesia's high-school students for International Olympiad in Informatics together with TOKI's Scientific Committee.So far, our accomplishments under my coaching are:3 Gold Medal, 12 Silver Medal, and 9 Bronze Medal @ International Olympiad in Informatics2 Gold Medal, 10 Silver Medal, and 15 Bronze Medal @ Asia Pacific Informatics Olympiad

Heading the "Shared Services" team that consists of teams that contribute to services that can be used by all Sirclo's Pillar. Major areas are :1. Next-Generation Order Service2. Marketplace Adapter3. Shared (self-service) Dashboard4. Sirclo Store Performance ImprovementNext-Generation Order Service:Initiate & hired the team to build next-generation order management system that can handles up to hundreds to thousands of order/s that are more scalable and customizable in order to support the cost-reduction initiatives (with less cost, can process more order/s).Marketplace AdapterLead the re-architect of current architecture for new more performant and reliable architecture. The team managed to improve current SLA by 700x improvement in time.Shared DashboardLeading team to make an embeddable shared (self-service) dashboard.Sirclo Store Performance ImprovementLeading ad-hoc initiative with multiple teams in Sirclo Store to identify bottleneck and improve performance in various areas (e.g. order, marketplace integration, logistics, authentications, etc.) of Sirclo Store.

Lecture on various algorithm-related subjects, and sometimes on various game development subjects.- Competitive Programming- Algorithm and Programming- Data Structures- Algorithm Design and Analysis

UPDATE (as of 2021): Jollybee's team has qualified to the ICPC World Final three-times-in-a-row from 2019 - 2021 ICPC World Final.During the my time, Jollybee's team has collected some Gold, Silver, and Bronze Medals with several honorable mentions.----------------------I'm Bina Nusantara (BINUS)'s Programming Team (a.k.a Jollybee) Trainer. My responsibility is to train existing and new members of Binus Programming Team. Binus Programming Team consists of highly talented students that compete on various Programming Competition.Under my coaching, Jollybee have won several national competitions, and qualified to the 2017, 2019-2021 ICPC World Final.

I'm Bina Nusantara (BINUS)'s Programming Team (a.k.a Jollybee) Trainer. My responsibility is to train existing and new members of Binus Programming Team. Binus Programming Team consists of highly talented students that compete on various Programming Competition.Under my coaching, Jollybee have won several national competitions, and qualified to the 2017 ACM-ICPC World Final.

Guest Lecturing on various Game Development, Algorithm, and Software Development Related courses.

Leading B2B Team @ TiketMaking, maintaining, and/or involved in all services related to B2B @ Tiket:Meta search, affiliate api, etc..

Leading Payment Ninja, Refund, Payment, and Promo Team @ TiketNow entrusted to lead 20+ engineers @ 4 different domains. Making, maintaining, and/or involved in these projects:Disbursement, Workflow, Ledger, Atlas (Location-based), Refund-v3, Refund-v4, Logging Core, Oracle (Internal Distributed Log Viewer), Configurator, IVR, Automation, Salesforce, go links, Payment 4.0, Payment Integration to 3rd Party (PGs, and Banks), Promo system, PCI-DSS, and internal dashboard..

Leading Internal Tools & Refund Team @ TiketEntrusted to lead over Refund team as well (leading in 10+ engineers). Making, maintaining, and/or involved in these projects:Disbursement, Workflow, Ledger, Atlas (Location-based), Refund-v3, Refund-v4, Logging Core, Oracle (Internal Distributed Log Viewer), Configurator, IVR, Automation, Salesforce, go links, and internal dashboard..

Leading Internal Tools Team @ TiketMaking, maintaining, and/or involved in these projects:Disbursement, Workflow, Ledger, Logging Core, IVR, Salesforce, go links, and internal dashboard..

Worked on scaling Tebak Gambar's architecture. Tebak Gambar is one of Indonesian Most Downloaded and Played games. It has more than 10 millions of downloads both on Apple App Store and Google Play Store. As Tebak Gambar started to introduce some features that requires server to handle requests from players, Tebak Gambar's server soon suffered from request overloads.I managed to scale Tebak Gambar's server and increases its efficiency. The server cost went down from more than hundreds of dollar each month to less than a hundred-dollar each month, while the server now can processes more than millions of request everyday compare to only thousands of requests before the scaling effort.

1. Helping team to find bugs in Artoncode's games.2. Configuring, and Maintaining Artoncode's Games server.3. Analyze and design the Artoncode's Games API, which included designing the database, and query optimization.4. Code the designed API, testing, bug checking, bug fixing.5. Implementing caching in the API to improve the API performance.6. Develop Artoncode's Games web sites (including integrating web design to wordpress, etc.)

For my internship in Binus Computing Laboratory, I developed the Jollybee Online Judge system to be used in Binus Programming Team training as my thesis.• Integrate the web design to be used with CodeIgniter.• Create the database and tables needed for the Online Judge website.• Develop the backend system that grades the submissions.

As requested by GNC Live Well Indonesia, I installed an e-Commerce CMS, and modified the CMS to suit GNC Live Well Indonesia needs.• Install e-Commerce CMS.• Modified the CMS to suit GNC Live Well Indonesia needs.• Train GNC Live Well Indonesia staff how to use the CMS.