I'm Djatu Hamidan Ardiwinanto (Danar), a Full Stack Web Developer focused on dependable backend systems, clean APIs, and maintainable web applications.
FULL STACK DEVELOPER
CodeIgniter · Laravel · Django · MySQL · REST APIs
About
My work spans web application development, transactional workflows, internal business tools, database-heavy systems, and API integrations. At Printsoft, I work on software used in printing-business operations including POS, order management, bookkeeping, and reporting.
I also built a reusable internal CodeIgniter 3 query-builder library to help the team write database queries that are cleaner, safer, and easier to maintain.
Experience
Printsoft · Surabaya
Gocement · Surabaya
PT. Bumi Menara Internusa · Surabaya
Universitas Dinamika · Surabaya
Selected projects
github.com/danarreichi
A drop-in, backward-compatible extension of CodeIgniter 3 Query Builder with Laravel-inspired eager loading, aggregate subqueries, WHERE EXISTS / WHERE HAS, chunking, and more.
View on GitHubA point-of-sale system for sales and inventory management, built to monitor stock and track inventory history efficiently.
Flexible dashboard showing visitor percentages across study programs, lecturers, staff, and external guests.
Room-based real-time messaging application implemented with WebSocket and MySQL.
Tracks target versus realization using the Hanumm Curve / S-Curve method, with investment data refreshed every five seconds.
A decision-support system that ranks recruitment recommendations based on selected HR criteria.
Room availability, booking, and post-stay review workflow built with Laravel and MySQL.
Recommendation system combining AHP and SAW methods to rank laptops from user-selected criteria.
Education
Bachelor Degree in Sistem Informasi
Contact
Reach me directly by email, WhatsApp, or LinkedIn.