About

I am a software engineer experienced in developing microservices and monolith-based applications from my past experiences and projects. Currently interested in media streaming protocols and video processing, and I am always open to any opportunities in this domain.

Skills

Java

Node.js

Javascript

Spring Boot

Django

MySQL

PostgreSQL

MongoDB

RabbitMQ

Redis

Docker

Google Cloud Platform

Amazon Web Service

Kubernetes

Terraform

Featured Projects

Lox Interpreter

TypeScript

Interpreters

Writing a tree-walking interpreter for Lox

Lox is the toy language from Crafting Interpreters. This build scans, parses, and evaluates it end to end — no external parser libraries. I implemented the lexer, parser, and abstract syntax tree evaluators completely from scratch, giving me a deep understanding of language implementation.

Implementing the Lexer and Parser

The first phase of the interpreter reads the raw source code string and converts it into a series of tokens, then builds an Abstract Syntax Tree (AST). It handles error reporting accurately by tracking line numbers and column positions during scanning.

Resolving Variables and Environment

Variables in Lox are lexically scoped. I implemented a robust environment system to handle variable assignment, shadowing, and resolution during runtime, ensuring that closures capture their surrounding scope accurately without memory leaks.

Control Flow and Loops

To make Lox Turing-complete, I added support for control flow including 'if' statements, 'while' loops, and 'for' loops. The AST nodes for these constructs are evaluated dynamically, maintaining correct branching paths and execution state.

Redis-go

Redis

RESP

Implementing the RESP protocol

redis-go speaks the real Redis wire protocol over TCP, with an in-memory store behind it, so the official redis-cli can talk to it directly. It supports parsing and serializing simple strings, bulk strings, arrays, integers, and errors using the REdis Serialization Protocol (RESP).

Handling concurrent client connections

The server handles multiple simultaneous client connections efficiently. It utilizes Go routines to process commands concurrently while maintaining a thread-safe in-memory key-value store using synchronization primitives like sync.RWMutex to prevent race conditions during reads and writes.

In-Memory Store and Expirations

I implemented TTL (Time-To-Live) functionality for keys, mirroring Redis' EXPIRE command. A background goroutine periodically cleans up expired keys to free up memory, while reads actively check and purge keys that have passively expired.

AOF Persistence Strategy

To prevent data loss on restart, I implemented an Append-Only File (AOF) persistence layer. Every write command is logged to disk. On boot, the server replays the AOF log to reconstruct the dataset completely from scratch.

SQLite-go

SQL

B-Tree

Parsing the database header and page structure

A from-scratch reimplementation of SQLite's file format and query engine in Go. This first phase reads the binary SQLite database file, parsing the 100-byte database header and navigating the B-Tree page structure to extract table schema information and row counts.

Executing SQL SELECT queries via B-Tree traversal

To retrieve data, the engine parses basic SQL statements and translates them into B-Tree traversal operations. It scans interior and leaf pages, decoding the varint payload formats to reconstruct cell records based on the table's column definitions.

Decoding Varint Payloads and Records

SQLite encodes row data tightly using variable-length integers (varints) and a specialized record format. I implemented a robust decoder to parse this binary stream back into native Go types like strings, floats, and integers based on the schema.

Index Traversals for Fast Lookups

To speed up 'WHERE' clause evaluations, I integrated B-Tree index scanning. By traversing index interior pages to quickly zero-in on matching keys, the engine avoids full table scans, drastically reducing disk I/O.

Other Projects

public-moq-demo

An open-source project of an adaptive video streaming application utilizing QUIC

QUIC

WebTransport

TypeScript

MPEG-DASH

MEDIS

A webinar marketplace for Doctors and medical staff in Indonesia

Spring Boot

Java

Zoom API

Payment Gateway

Http-go

Simple implementation of HTTP Server made from scratch using Go

HTTP

TCP

Agroaid

An application for detecting diseases in plants

Node.js

MySQL

Work Experience

CIMB Niaga

July 2025 - Present

Software Engineer

Improved document discovery and accessibility by building a file exploration page with full-text and fuzzy search, plus an embedded PDF viewer using pdf.js.
Ensured data consistency for RAG-based applications by building an automated BullMQ pipeline to ingest and reconcile daily master data updates from an external source.
Increased transparency of internal AI usage by developing a report dashboard page to visualize internal chat AI application usage for stakeholders.
Streamlined document ingestion in the internal RAG platform by integrating SharePoint and automating daily synchronization jobs to ensure data consistency.

AwanTunai

Aug 2024 - May 2025

Backend Engineer

Achieved a 60% and 50% reduction in memory and CPU consumption by upgrading multiple services from Java 8 to Java 21 and Spring Boot 2 to Spring Boot 3.
Improved homepage load time by 50%, reducing p50 latency from 1.4s to 0.7s by rewriting slow MongoDB queries and utilizing asynchronous processing.
Automated invoice validation and fraud detection by developing a feature to allow users to upload invoices, assess data accuracy, and flag suspicious submissions using machine learning.
Increased loan applications by developing an automated location-based application feature, enabling users in assigned regions to submit loan applications without requiring sales assistance.

AwanTunai

Aug 2023 - Feb 2024

Backend Engineer Intern

Satisfied regulatory (OJK) compliance by developing a lender login and registration page and enhancing the risk and compliance verification feature using Spring Boot and MongoDB.
Satisfied regulatory (OJK) compliance by developing a notification centre for the whole loan submission and disbursement flow using Firebase Cloud Messaging and RabbitMQ.
Automated loan document signing for lenders by integrating the internal service with a digital identity and signature provider, Privy.

Faculty of Medicine

Feb 2023 - July 2023

Software Developer Intern

Enabled end-to-end medical webinar delivery by developing MEDIS using Spring Boot and integrating with the Zoom Meeting API for automated webinar creation, access, and live session management.
Automated webinar ticket payments by integrating the platform with the Midtrans Payment Gateway to handle transactions, payment status updates, and purchase history.
Improved security and usability for multiple user roles by implementing role-based access control workflows across webinar management features.

Bangkit Academy

Feb 2023 - July 2023

Cloud Computing Cohort

Built a plant disease detection application using Node.js, integrating machine learning models for real-time automated diagnosis.
Deployed and managed containerized applications on Google Kubernetes Engine as part of the Google Cloud Engineer learning path.
Managed Google Cloud Platform resources across computing, storage, networking, and machine learning, completing 900+ hours of coursework.

Education

University of Indonesia

Sep 2020 - July 2024

Bachelor's Degree in Computer Science

Relevant Coursework: Information System Development Project, Enterprise Applications & Architectures, Data Structures & Algorithm, Databases, Computer Network, Operating System.