Open to projects & collaboration
Backend & Mobile Developer
I work mostly with Laravel, FastAPI, PostgreSQL and Flutter: systems that are secure, keep data consistent across web and mobile, and stay easy to maintain after launch.
About me
I'm Mubarakh Hayatna Khairy, a Backend Software Developer at PT Lautan Air Indonesia. Day to day I design database schemas, build REST APIs, integrate Single Sign-On and connect the Flutter apps our operations teams rely on.
Outside work I build my own products with the same pattern: a Laravel web app, a FastAPI service and an Android app sharing one PostgreSQL database. Coinest, Smartend and Scout Semaphore all grew out of it.
“A good backend doesn't just work today — it's secure, auditable and easy to change.”
Selected work
Coinest
Smartend
Scout Semaphore
Cards, transactions, savings, budgets, split bills and debts in one system. The Laravel web app and the Android app share one database, so every change shows up on every device immediately.
View projectA complete attendance system: three check-in methods, leave and sick requests, overtime, attendance corrections with tiered approval, attendance scores and an automatic holiday calendar. One codebase runs as either a company or a school edition.
View projectA semaphore training platform for scout students and teachers. Students act out letters in front of the camera, a YOLOv8-pose model from my thesis grades the arm positions, and teachers manage classes and exams on the web.
View projectProjects, certifications and technical skills in one place.
Coinest
A personal finance tracker that stays in sync across web and Android.
Smartend
Scout Semaphore
Learn and take scout semaphore exams, graded by a YOLO model in real time.
FGO — FG Order & Sales Compass
An order, delivery and sales-consumption monitoring system used daily by internal teams, with automated reporting and notifications to the sales team.
SalesNav Mobile
REST API and HMAC authentication that sync data between a Flutter app and a Laravel backend, used by field sales to log visits and customer follow-ups.
SSO Auth Hub
A centralised HMAC-based authentication hub that unifies login for every internal application under one identity system.
Drive Hub
Backend for managing the company fleet and drivers: vehicle scheduling and centralised operational status tracking.
Transporter
A system supporting transport and goods delivery between business units, covering distribution flow and delivery status.
Absensi Karyalin
An end-to-end employee attendance system for PLN UID West Sumatra: employee/supervisor/manager data, automatic attendance recaps and overtime reports.
Journey
May 2025 — Present
Backend Software Developer · Full-time · On-site
Mar 2025 — May 2025
Web Developer · Freelance
Jun 2024 — Sep 2024
IT Support & Web Developer · Internship
Curriculum Vitae
A one-page PDF summary of my experience, projects, education and certifications.
Got an idea or a project? Send a message and let's talk.
For freelance projects, collaboration, or just a technical chat. I usually reply within 1–2 business days.
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Tangerang, Indonesia · --:-- WIB