Backend Engineering · Offensive Security

Raihan Hafiizh Q

I work as a |

Backend & web developer with a security background. Five years building secure, scalable systems — and a quiet habit of understanding exactly how they break.

Raihan Hafiizh Q Backend · Security
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Get To Know

About

The person behind the code

A dedicated professional with 5+ years of experience in Backend Development, specializing in PHP, Laravel, NodeJs, TypeScript, Python, and database technologies including MySQL, PostgreSQL, and Oracle. Strong foundation in microservices architecture, data optimization, and concurrent processing systems.

Beyond development lies a deep interest in offensive security, holding a Certified Red Team - Intermediate (CRT-ID) certification — proficient in penetration testing, vulnerability assessment, and tools including Burp Suite, Metasploit, Nmap, and OWASP ZAP. The same instinct that builds a system is the one that finds where it fails.

LocationJakarta, Indonesia
Age26 years
Emailraihanhafis@gmail.com
DegreeInformation Systems
Download CV

What I Use

Skills & Tools

A complete overview of my technical toolset

Programming Languages

TypeScriptTypeScript
JavaScriptJavaScript
PHPPHP
PythonPython
HTML5HTML5
CSS3CSS3

Backend & Frameworks

Node.jsNode.js
Express.jsExpress.js
NestJSNestJS
LaravelLaravel
DjangoDjango

Databases

PostgreSQLPostgreSQL
MySQLMySQL
MongoDBMongoDB
RedisRedis
OracleOracle

Tools & DevOps

DockerDocker
GitGit
GitHubGitHub
VS CodeVS Code
NginxNginx
LinuxLinux

Frontend Technologies

ReactReact
Vue.jsVue.js
BootstrapBootstrap
Tailwind CSSTailwind CSS

Cybersecurity & Security Tools

Kali LinuxKali Linux
Burp SuiteBurp Suite
MetasploitMetasploit
NmapNmap
WiresharkWireshark
OWASP ZAPOWASP ZAP
John the RipperJohn the Ripper
HashcatHashcat
NiktoNikto

My Journey

Experience

A timeline of my professional work

04 Oct 2025 - Mar 2026 · 6 months

Backend Developer

Folka Tech Indonesia · Contract

Worked at Folka Tech for Metranet, developing and maintaining internal backend web applications for the Ministry of State Secretariat (Setneg). Focused on secure, scalable services using NestJS and PostgreSQL, implementing request throttling, JWT-based authentication, structured logging, and strong security practices.

Technologies: NestJS, PostgreSQL, JWT Authentication, Request Throttling, Structured Logging

  • Built and maintained internal backend services for Setneg business workflows
  • Implemented API rate limiting and JWT-based authentication for stronger access control
  • Applied structured logging to improve observability and troubleshooting efficiency
  • Enforced secure coding practices to protect sensitive internal data

03 Aug 2025 - Oct 2025 · 3 months

Backend Developer

BookingToGo · Contract

Developed hotel data optimization solutions from multiple vendors using Python and PostgreSQL. Designed efficient architecture with concurrent processing and multithreading to significantly improve data processing performance.

Technologies: Python, PostgreSQL, Concurrent Processing, Multithreading

  • Implemented clean code architecture with class-based design and modular functions
  • Integrated decorator pattern for a comprehensive logging system
  • Ensured hotel data integrity via automated validation, transformation, and synchronization
  • Significantly improved data processing speed and accuracy for operational teams

02 Jul 2022 - Jan 2025 · 2 years 7 months

Backend Developer

Telkom Indonesia · Contract

Responsible for developing the OSS (Online Single Submission) web application for the Ministry of Investment/BKPM, under a project contract with Telkom Indonesia.

Technologies: TypeScript, JavaScript, Node.js, PostgreSQL, OracleDB, Sequelize ORM

  • Developed and maintained reliable, scalable backend systems for OSS requirements
  • Collaborated with cross-functional teams for seamless module integration
  • Optimized system performance with best practices in programming and DB management
  • Conducted debugging, testing, and documentation to ensure high code quality
  • Successfully supported large-scale public sector projects

01 Jul 2020 - Jun 2022 · 2 years

Web Developer

PT. Indosat Tbk · Contract

Supported the development and maintenance of innovative web-based applications according to company business needs.

Technologies: PHP, Laravel, HTML, CSS, JavaScript, Bootstrap, jQuery

  • Developed responsive, user-friendly UI using HTML, CSS, and JavaScript
  • Implemented backend features with PHP/Laravel for efficiency and security
  • Optimized UX with Bootstrap for responsive design and jQuery for DOM management
  • Performed debugging, testing, and code documentation for project sustainability
  • Collaborated with cross-functional teams on innovative web solutions

My Work

Selected Work

A selection of projects I've delivered

OSS Project

Online Single Submission (OSS)

A comprehensive web application for the Ministry of Investment/BKPM to streamline business licensing.

TypeScriptNodeJsPostgreSQLMicroservices
My Delivery Project

My Delivery

Internal Indosat Ooredoo delivery management system with real-time tracking.

PHPLaravelMySQLBootstrap
Nikkisuper Project

Nikkisuper Management System

Freelance ERP system for PT. Nikki Super Tobacco Indonesia.

LaravelVue.jsMySQLREST API
ApplyFlow Tracker Project

ApplyFlow Tracker

Personal dashboard for tracking job applications, status, and progress.

Java (Spring Boot)React.jsPostgreSQL
ERP GeoEnergy Project

ERP GeoEnergy Prototype

GeoEnergy (oil & gas) ERP prototype monitoring workflow from drilling to production output.

Java (Spring Boot)React.jsPostgreSQLMicroservices

Credentials

Certifications

Credentials that validate my expertise


Get In Touch

Contact

Have a project or a question? Reach out.

Location

Jakarta, Indonesia

Profiles