I'm Johannes — a self-taught developer who learns by building complete systems, not just websites: POS & retail platforms, corporate management suites, government records systems, school platforms, and workflow automations. From database to deployed app — I build the whole thing myself.
I'm Johannes — an aspiring, self-taught developer from the Philippines. I learn by building real systems, not tutorials: a point-of-sale with subscriptions and licensing, a four-department management suite for an agriventures corporation, an emergency-response records system for a municipal disaster office, and a QR attendance platform for a college department.
My toolkit spans the whole stack: Node.js and serverless backends, Supabase / Firebase data layers, offline-first web apps, native Android builds, and integrations with Google Sheets, Gmail and PH payment flows like GCash and Maya.
I'm early in my journey — but every system I've shipped came with role-based logins, audit trails, backups, deployment and plain-English documentation, because I believe software isn't done until the client can actually run it. I'm looking for my first full-time role, an internship, or my next project to grow with.
Six production systems across four industries. Click any card for the full breakdown.
Chosen for shipping speed and reliability — zero-dependency where possible, cloud-native where it counts.
From first consultation to deployment and support — I take projects from idea to running system.
Complete point-of-sale with inventory, receipts, discounts, shift reports — plus a public online store and delivery pipeline per branch.
Department systems (sales, operations, HR & payroll, finance) with dashboards, role-based logins and full audit trails.
Secure multi-device records systems — Android, web and office PC — with cloud sync, backups and privacy-conscious handling.
Attendance, events, members, fines and announcements — built to handle a thousand users without long lines.
Google Sheets two-way sync, Gmail ingestion, scheduled email summaries, alerts — your bookkeeping and reports on autopilot.
Hosting, Android builds & signing, license servers, handover documentation, training guides and ongoing maintenance.
Whether it's an entry-level role, an internship or a project — I bring working software, deployed and documented. Message me and let's talk about what you need.