Hey, I'm Denisa Rachman.

Senior Backend Developer | PHP & Laravel Specialist
Sukabumi, West Java, Indonesia

About

Senior Backend Developer with 10+ years of professional experience building scalable, high-performance web applications. Deep expertise in PHP (Laravel, Phalcon, Symfony, CodeIgniter), MySQL/MariaDB, Redis, and RESTful API design. Experienced in code refactoring, applying SOLID principles, design patterns, and clean code practices to maintain and improve large codebases.

Skilled in database optimization, performance tuning, caching strategies, and queue-based/event-driven architectures for high-throughput systems. Practiced in writing automated tests (Unit & Feature Tests with PHPUnit) and implementing CI/CD pipelines for reliable, continuous deployment. Experienced with AWS cloud services, Docker containerization, and Linux server administration.

Strong collaborator who thrives in cross-functional, remote teams. I care about code quality, technical documentation, and delivering solutions that provide real value to businesses.

Always open to learning new technologies, working on meaningful projects, and collaborating with teams that value engineering excellence and continuous improvement.

Experiences

Al-Ma'tuq Islamic Boarding School

Full Stack Developer | Sep 2024 - Present
  • Architected and developed a multi-branch ERP system (finance, HR, academics, inventory) serving 5 school branches using modular Laravel architecture with clean code and SOLID principles.
  • Designed and optimized MariaDB schema for complex relational data across modules, implementing indexing strategies for query performance tuning.
  • Implemented Redis caching for frequently accessed data, improving dashboard load time and reducing database load.
  • Set up CI/CD pipelines (GitLab CI/CD, GitHub Actions) with automated testing (PHPUnit) and Docker-based deployment for consistent dev/staging/production environments.
  • Built RESTful APIs consumed by Livewire and Alpine.js front-end components, with proper versioning and documentation.
Tech Stack: PHP (Laravel), MariaDB, Redis, Bootstrap, Linux Server, Nginx, Docker, GitLab CI/CD, GitHub Actions, TailwindCSS, Livewire, Alpine.js, PHPUnit.

PT Kirim Email Indonesia

Backend Developer | Nov 2018 - Sep 2024
  • Designed and maintained RESTful APIs for a high-traffic SaaS email marketing platform serving thousands of daily active users.
  • Optimized MySQL/MariaDB queries and Redis caching strategies, reducing average API response time by approximately 30%.
  • Built asynchronous queue-based processing (Beanstalkd) for bulk email campaigns and transactional delivery, handling millions of emails per month using event-driven architecture patterns.
  • Refactored legacy PHP codebase to improve maintainability, applying SOLID principles, design patterns (Repository, Service Layer), and clean code practices.
  • Integrated third-party payment gateways, analytics services, and client data import features via RESTful APIs.
  • Collaborated with cross-functional teams (frontend, QA) using Git-based workflows with code review and branching strategy.
  • Wrote unit and feature tests to ensure code reliability and maintain coding standards across the team.
Tech Stack: PHP (Phalcon), Beanstalkd, MariaDB, Redis, Docker, Linux, Mailcow, Haraka, PHPUnit.

AWARE Creative Lab

Full Stack Developer | Aug 2018 - Oct 2018
  • Worked in a project to develop a mobile application for citizen or local community reporting in scope of Sukabumi Government / Sukabumi Area, integrated with the central government system to ensure efficient data exchange and processing.
Tech Stack: Android (Java), React Native.

Orangebites Technologies

Full Stack Developer | Jun 2014 - Jun 2018
  • Built custom web applications including eCommerce platforms, ERP systems, and corporate websites for diverse clients using PHP (CodeIgniter, Symfony) and MySQL.
  • Designed database schemas, wrote optimized SQL queries, and implemented backend business logic for complex client requirements.
  • Promoted to lead developer role, managing project timelines, conducting code reviews, and mentoring junior developers.
Tech Stack: PHP (CodeIgniter, Symfony), MySQL/MariaDB, Bootstrap, Linux, Android (Java).

Dewitech Web Design

WordPress Developer | Mar 2014 - May 2014
  • Collaborated in the development of custom WordPress themes, working on theme customization, plugin integration, and troubleshooting to meet client needs.
Tech Stack: PHP, MySQL, WordPress.

Tech Skills

Core Competencies

System Architecture, RESTful API Design, Database Optimization, Performance Tuning, Code Refactoring, SOLID Principles, Design Patterns, Clean Code, Automated Testing, CI/CD Automation

Back-End & Scripting

PHP (Laravel, Phalcon, Symfony, CodeIgniter, WordPress), Node.js, Beanstalkd, Queue & Event-Driven Architecture

Front-End

TailwindCSS, Bootstrap, React, Vue.js, JavaScript, HTML5, CSS3, Livewire, Alpine.js

Database & Caching

MySQL, MariaDB, PostgreSQL, Redis

Testing

PHPUnit (Unit & Feature Tests), Test-Driven Development

DevOps & Cloud

Docker, AWS (EC2, S3, RDS — certified), Linux (Fedora, Ubuntu), Nginx, Git, GitHub Actions, GitLab CI/CD

Education

Universitas Siber Muhammadiyah

Informatics Management | Jan 2026 - Jun 2029 (Expected)

Distance learning program (Masih menjalani kuliah jarak jauh, proyeksi hingga tahun 2029).

SMKN 2 Sukabumi

Software Engineering | Jun 2009 - Jun 2012

Certificates

AWS re/Start Graduate

Amazon Web Services Training and Certification | Jun 2026 - Present
View Credly Badge

Awards & Achievements

Becoming a Team Leader at Orangebites Technologies

Project Leader | Jan 2018

Given additional responsibilities by the company to manage projects, for example supervising the team.

Languages

Indonesian (Native), English (Professional Proficiency)