Mobile & Fullstack Developer, (occasionally AI)

i write code.
some of it survives
contact with users.

Apps for mobile. Systems for the web. Every project here was a real problem, a real decision, a real outcome.

See the workGet in touch

Work

Projects built across mobile and web .. real problems, real users, real constraints, real outcomes.

  • project.json
    {"title": "anugrahjayasby.id","type": "web","year": "2026","description": "Store profile & POS system for a family business","detail": "Internal POS system covering sales records, expenses, monthly reports, and inventory replacing manual reports. Built while learning AI-assisted development; used it as a study in how generated code behaves and where it needs to be improved.","stack": ["Next.js","Native PHP","MySQL","SEO"],"links": [{"label": "Visit site","href": "http://anugrahjayasby.id"}]}
    Visit site
  • project.json
    {"title": "Manufacturing ERP — Mobile","type": "mobile","year": "2025–now","description": "Initiated replacing desktop-only factory workflows with a Flutter mobile app","detail": "Factory floor workers had no mobile access to the ERP. Every requests/approval, monitoring task, and status check required a laptop; Redesigned and rebuilt the internal mobile app to cover the full daily operation loop.","stack": ["Flutter","Dart","Firebase"],"confidential": true,"access": "details shared on request"}
    Covered by NDA — details available on request
  • project.json
    {"title": "Manufacturing ERP — Web & Migration","type": "fullstack","year": "2025–now","description": "Maintaining legacy ERP system and working on moderinizing full module ERP System","detail": "(1) team migration of a full-module ERP from legacy ODBC Progress + native PHP into Laravel, PostgreSQL; (2) maintaining the legacy system during transition, bridging data and algorithms between old and new while both stayed live; (3) a semi-automated Python transferring legacy ODBC Progress records to PostgreSQL via CSV, preserving data integrity across the cutover without manual record-by-record transfer.","stack": ["Laravel","PostgreSQL","PHP","Python"],"confidential": true,"access": "details shared on request"}
    Covered by NDA — details available on request

Things to be considered

I'm a generalist mobile and fullstack developer with hands-on experience shipping apps and systems from idea to production. I work across the full stack, comfortable in both native app environments and web infrastructure.

I care about improvement (also users): what's the root cause problem, how can we solve it, tradeoff/obstacles, what was learned from shipping it to users.

Mobile
FlutterDartAndroid
Frontend
Native PHPLaravel{learning} Next JS
Backend
{learning} Node.jsLaravelPostgreSQLMySQLODBC ProgressPython
Tools
GitFigmaFirebase
currently.ts
working_on→This portfolio + feature development at my current company
learning→React, Next.js, Sharpening scalability of my codes
reading→'Is God a Moral Monster?' - Paul Copan

Lastly,

If you found me interesting, I'm open to new opportunities. Kindly reach me out!

hariyantowinston@gmail.com
LinkedInInstagram