• Initialized the base code of the new order service by implementing hexagonal architecture and rewrote the order use cases in the new service.• Improved Kafka consumer throughput by processing incoming messages to goroutines using the worker pool pattern and preventing the race condition using key locking. • Enhanced product stock and notification API integration in the order process using transactional outbox pattern to improve transaction integrity, improve performance, and reduce… Show more • Initialized the base code of the new order service by implementing hexagonal architecture and rewrote the order use cases in the new service.• Improved Kafka consumer throughput by processing incoming messages to goroutines using the worker pool pattern and preventing the race condition using key locking. • Enhanced product stock and notification API integration in the order process using transactional outbox pattern to improve transaction integrity, improve performance, and reduce dependency between services.• Chosen as a buddy in the “Buddy Program” to mentor 5 new engineers by introducing them to the Majoo cultures, engineering process, and technology stack. Show less

• Developed Kafka consumer for updating transactions item's capital price• Created script for recovering promotion data• Reduced sales report API latency by fixing the N+1 query problem and using proper index in slow queries• Enhance data format in the export file of sales reports based on the new requirement

• Analyzed problems and gathered system requirements from the stakeholders• Designed technical solutions and define software functionality based on the system requirements• Built websites and APIs on several projects such as Pertamina Against Covid-19, UB Tanggap Covid-19, Singo Pajak Kota Malang, and Sambat Kota Malang

- Analyzed and designed solution for the ship scheduling problem- Built scheduling information system for ship departures and arrivals

Gave material, exercises, and scoring assignments about SQL basic concepts, ERD, DDL, DML, Database Transaction, etc

Gave material, exercises, and scoring assignments about basic programming (Java)