- Create API by using Go> Database: SQL Server> API Docs: Swagger> Framework: Gin> Architecture: Microservice> Return JSON as API Response- Create CRUD API using Spring Boot> Database: MySQL> API Docs: Swagger- Compare CRUD Performance between Spring Boot and Gin Go> Used Apps: JMeter (to estimate speed) & Task Manager (to estimate CPU, RAM, and Power Resource)- Create Performance Test Scenarios> Using JMeter> One test scenario will represent all APIs that required to be hit to complete a single task.- API Code Optimization> First, I looked for parts of the code that were making the API slow> Second, I changed the algorithm to faster algorithm- Create Dynamic Store Procedure> Database: SQL Server> With this SP, any simple query can be written shortly (including LIMIT, OFFSET, and ORDER keywords)- Create a system to check the differences between 2 databases> Used to double check if there are missed updates between development & test environments> Can check differences in tables, columns, views, SP, etc.- Create Decoding System> Every input to the API is encoded. Then, my task is to create a decode function to decode the encoded input- Secure API> Penetration Testing Type: SQL Injection> SQL Injection prevention is made after the vulnerability is discovered in the API- Create C/C++ Programs> Program 1: To perform large data amount editing in .txt file> Program 2: To create .txt file with a certain size as we requested- Develop Front-End with React and NextJS> Hit external API to retrieve JSON & image data> There are CRUD data operations to local storagePersonal activity while have free time:- Research Hash System for Database> Hash System: 1 table is divided into many tables by using hash function- Research Cache System for Database> Cache System: Stores frequently used data into different table (Ex: cache table)

I become the mentor/teacher to teach university students about Object Oriented Programming lesson. What I taught not only the concept of the algorithms, but also practice it into Java program code by using Eclipse. My teaching schedule is 1 session/week and 2-3 hours/session.The purpose to create this class is to help university students, especially BINUS students to understand Object Oriented Programming lesson well and could pass the exams well.Learning curriculum that I have made for this tutoring class:Session 1: Basic JavaSession 2: Collections (Vector & Array List)Session 3: Class, Object, MethodSession 4: OOP Concept & RelationshipSession 5: Mid-Exam PracticeSession 6: Polymorphism & InterfaceSession 7: Multi-ThreadingSession 8: Multi-Threading (Project Practice)Session 9: MySQL Database IntegrationSession 10: MySQL Database Integration (Project Practice)

I become the mentor/teacher to teach university students about Data Structure lesson. My teaching schedule is 1 session/week and 2-3 hours/session.The purpose to create this class is to help university students, especially BINUS students to understand Data Structure lesson well and could pass the exams well.Learning curriculum that I have made for this tutoring class:Session 1: Array & PointerSession 2: Linked ListSession 3: Stack, Queue, Hash TableSession 4: Lab Mid-Exam PracticeSession 5: Prefix, Infix Postfix (Calculator Logic)Session 6: Binary Search TreeSession 7: Lecture Mid-Exam PracticeSession 8: AVL TreeSession 9: Lab Final-Exam PracticeSession 10: B-Tree & Red Black TreeSession 11: Heap, Tries, Graph, Disjoint SetsSession 12: Prim, Kruskal, Dijkstra & Deap SortSession 13: Nested Tree & Heap SortSession 14: Lecture Final-Exam Practice

Be a mentor for about 5 BINUS Students for each semester. My job is to help them in understand their class materials. Not only to understand, but my job also to help them to pass the exams well