Hi there, I'm

Dandy Maulana

who builds things that scale.

Backend-focused engineer with 3+ years of experience building high-performance APIs and integration services handling 5k+ RPS. Worked across payments, banking, insurance, travel, and transportation industries.

See My Work Get In Touch

func main() {
  engineer := Engineer{
    Focus:    "Backend",
    Passion:  "Scalable Systems",
    RPS:      5000,
  }
  engineer.Build()
}

About Me

Passionate backend developer with a love for solving complex problems through clean, efficient code. I specialize in Go programming and consistently focus on performance optimization — recently achieving 0ms runtime solutions on LeetCode challenges with memory efficiency that outperforms over half of the Go community.

I've worked across diverse domains: from payment systems at Durianpay, digital lending platforms at BRI, auto-recurring & auto-debit insurance systems at Manulife, flight ticket reservation services at BookingToGo, to QR-based e-ticketing for KCI & LRT. Each taught me something different about scale, reliability, and working within constraints.

What drives me is the intersection of technical excellence and team growth. I'm not the kind of engineer who just wants to ship features — I care about how things are built, the trade-offs, the architecture decisions, and the performance implications.

Outside of code, you'll probably find me behind a sim racing rig — chasing lap times and perfecting racing lines. Turns out, optimizing systems and optimizing race setups aren't that different.

My next goal? Growing into a Lead Software Engineer role, where I can blend hands-on technical expertise with people leadership and mentoring.

            3+
            Years Experience
          

            5+
            Industries
          

            5k+
            RPS Handled
          

            8+
            Companies
          

Where I've Worked

Backend Engineer

Durianpay

Oct 2025 — Present

Payments

Building and scaling payment infrastructure and integration services
Working on high-throughput systems handling 5k+ RPS
Developing reliable payment processing pipelines and APIs

Golang Payments API

Backend Engineer

Bank Rakyat Indonesia (BRI)

Feb 2025 — Oct 2025

Banking

Built and maintained APIs for digital lending platform (pinjaman online)
Worked with high-throughput environments handling massive daily transactions
Implemented message broker integrations with Kafka and RabbitMQ
Optimized database queries and system performance on PostgreSQL and Oracle

Golang PostgreSQL Kafka Redis Docker

Full Stack Engineer

Manulife Indonesia

Aug 2024 — Feb 2025

Insurance

Built auto-recurring & auto-debit payment systems for insurance policies
Working with event-driven architecture using Azure Service Bus
Developed backend services with Spring Boot and Java

Java Spring Boot Azure Service Bus

Back End Developer

BookingToGo

Oct 2023 — Aug 2024

Travel

Built backend services for flight ticket reservation and booking engine
Responsible for CS-side operational web and flight management systems
Developed APIs handling flight search, pricing, and ticketing workflows
Continue Legacy PowerBI to Present Latest Promo Feature Usage

Node.js REST API Backend

Backend Engineer

Bank Rakyat Indonesia (BRI)

Oct 2022 — Sep 2023

Banking

Responsible for Ceria App backend — BRI's digital lending product
Built and optimized APIs for online loan origination and disbursement
Worked with distributed systems and high-availability architectures

Golang PostgreSQL Redis Docker

Web Programmer

PT Nutech Integrasi

Mar 2021 — Oct 2022

Transportation

Built QR Ticketing API System for KCI (Commuter Line)
Developed backend e-ticketing LRT Gate System
Designed modular service architectures for scalable transactional platforms
Integrate PowerBI to Transaction Monitoring System for Graphical Data

Node.js Laravel REST API QR Code PowerBI

Web Developer

PT Loka Citra Media

Sep 2020 — Feb 2021

Retail Tech

Developed and maintained Minimart POS System
Built full-stack features for point-of-sale management platform

PHP Laravel MSSQL

Software Engineer Intern

Human Initiative & United Tractors

2019 — 2020

NGO & Heavy Equipment

Built Notification API at Human Initiative
Developed Surat Pengeluaran Barang web app at United Tractors

PHP JavaScript REST API

Tech Stack

Languages

Golang

Node.js / JavaScript

PHP

Java

Frameworks

Express.js

Laravel

Spring Boot

React Native

Databases

PostgreSQL

Redis

Oracle SQL

MSSQL

Infrastructure

Docker

Kafka

RabbitMQ

Azure Services

Highlighted Projects

💳

Payment Integration Service

Building payment integration services at Durianpay. Designing reliable payment processing pipelines with focus on consistency, idempotency, and fault tolerance across multiple payment channels.

Golang Payments High Throughput

🎫

QR E-Ticketing System

Built QR code-based e-ticketing APIs for KCI transportation handling 5k+ RPS. Managed ticket generation, validation, and gate system integration with focus on low-latency responses and high availability during peak hours.

API Design QR Code Transportation

✈

Flight Booking Engine Migration

Migrated flight booking engine from PHP to Golang, improving performance and scalability. Redesigned service architecture while ensuring zero downtime during the transition and maintaining backward compatibility with existing systems.

Golang PHP Migration

📱

React Native OTA Architecture

Designed a modular React Native architecture supporting over-the-air updates via CDN. Features dynamic bundle loading with signature verification for secure, seamless deployments without app store reviews.

React Native CDN OTA

Dandy Maulana

who builds things that scale.

About Me

Where I've Worked

Backend Engineer

Backend Engineer

Full Stack Engineer

Back End Developer

Backend Engineer

Web Programmer

Web Developer

Software Engineer Intern

Tech Stack

Languages

Frameworks

Databases

Infrastructure

Highlighted Projects

Payment Integration Service

QR E-Ticketing System

Flight Booking Engine Migration

React Native OTA Architecture

Education & Certifications

Education

Universitas Negeri Jakarta (UNJ)

SMA Negeri 5 Tangerang

Certifications

Let's Connect