• Led the integration between state data and Google Workspace API, supporting online learning for around 3 million teachers and 50 million students in 400,000 schools, one of the world's largest educational networks.
• Reduced failures by using Redis to implement an outgoing rate limit. Fixed major issues, including a persistent loop bug, cutting integration time from 7 days to just 4 hours.
• Used OpenTelemetry and Google Cloud Trace for comprehensive tracking, and added new Grafana metrics to monitor and alert on critical features, leading to quicker bug detection and easier error tracking.
• Improved the deployment process with better communication and acknowledgment. Enforced unit tests in code reviews, increasing unit test coverage by 18% in a 225,000-line code repository.

• Participate in maintaining communication platforms including chat and notification services that handle millions of requests per day.
• Spearheaded the development of a KYC enforcement feature utilizing big query and Ruby, resulting in a daily reduction of approximately 10% in refund rates.
• Migrating sms provider to use verihubs that results in 15% cost saving.
• Collaborating with data scientists, stakeholders and product managers to improve our current algorithms to protect the marketplace ecosystem from bad quality sellers and bad quality products including creating new regulations for medicinal products, creating new processes to hide bad quality sellers and improved current algorithm to reduce the number of false positives in its detection.

• Maintain the flow of seller transactions at Bukalapak, including accepting, delivering, refunding and remitting transactions. Create precise monitoring, logging and alerts using kibana, datadog and opsgenie. Set up a reliable system that handles ~ 6 million remittance transactions per day.
• Collaborate with data scientists to create a phishing prevention and detection system, which is implemented with bigquery and golang, works with millions of data and ensures process reliability, saving millions of cash every day.
• Develop a seller quality automation system, which evaluates sellers by several business rules to keep them on track to provide the best service to buyers. Reduce refund rate and increase buyer satisfaction.
• Lead a number of engineers, conduct daily code reviews, create technology documents for microservices and features, make technical decisions, communicate product requirements with current technology capabilities, ensure all teammates apply engineering best practices, conduct 1 on 1 sessions, work directly below engineering managers.

• Maintaining Bukalapak legacy fraud detection system, create a fraud tracker for all game voucher transactions in Bukalapak which can further be used by data analysts to create a fraud rule.
• Collaborating with data scientists to create bot detection in user registrations that prevent rogue users and suspicious users from abusing our referral system at Bukalapak, saving millions in cash.

Inspired by Bukalapak’s commitment to nurturing and investing in local talent—a rare approach at the time—I was motivated to join and contribute to this vision.

Inspired by advancements in AI, I developed a sentiment analysis thesis using opinion mining methodology and a Naive Bayes classifier, achieving an average accuracy of 86%.

• Build a collection management system, monitoring thousands of debt-collectors doing their work, including: online attendance check with desired office location, managing how much workers can carry an amount of money, creating a dashboard to monitor and create reports based on their performance. Win several tender because of our user friendly application and performance, despite having a small team and new company.
• Integrate to 3rd party using external API with oauth2, creating integration with google map javascript API and geolocation, dynamic menu management with secure access.
• Introducing code repository and new workflow with git, upgrading and refactoring a whole system with laravel framework. Creating a SOP to install servers and deploy applications into Vultr. Working directly below the head of the technology, make a tech decision and contributing to their core system.

Driven by Jari's mission to build a sustainable collection ecosystem in Indonesia, I joined the company as the third software engineer on the team.

Our college's engineering division is launching a recruitment initiative for students to begin their professional careers by assisting in the migration of various college systems to newer technologies. I have accepted the challenge and have been assigned a direct task by the head of engineering to migrate the current lecturer system, which is written in native PHP 5, to the latest PHP 7 version and the CodeIgniter framework.