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Route line: KIER ABELO · Cebu, PH

Built where signal drops.

I'm Kier, a full-stack developer in Cebu. Jeepney routing, BIR-compliant point of sale, an agrarian network, Filipino NLP: I build complete products for Filipino users, from the Postgres schema to the last pixel. Six are live in production today.

See the routes[email protected]
Every route is solved live in your browser by Lakaw, my A* library, detouring around no-signal zones until you click a stop and send the line somewhere new.
SYSTEM MAP

All routes in service.

Six projects, each live in production today: an agrarian network, transit routing, point of sale, pathfinding, machine learning, and weather.

L1 · Agrarian Network · 2026

Tabo

A social network for Filipino farmers: feed, cooperatives, real-time messaging, farm jobs, and RSBSA registry submissions. Live at tabo.kierabelo.com.

A turborepo monorepo: NestJS API over Prisma and Postgres, a dedicated WebSocket gateway for real-time delivery, and a Next.js PWA client, all typed end to end through a shared zod-schemas package. NATS and Redis back the job and cache layers, media goes through S3 with signed uploads, and Clerk handles auth. Co-op membership with roles and applicant review, RSBSA submission and verification, web push notifications, and an OpenAI-assisted bug-triage pipeline. Instrumented throughout with OpenTelemetry and Sentry.

Role
Developer
Stack
Next.js · NestJS · Prisma · PostgreSQL · Redis · NATS
Live
tabo.kierabelo.com (opens in new tab)

L2 · Transit App · 2026

Amping

Offline-first transit routing for Cebu commuters. Flutter app and PWA, geofenced stop buzzer, live trip sharing, and a gamified commute.

A native Flutter app and web PWA sharing a single Supabase backend and transit engine. A* pathfinding with 4-category weighting and grounding rules for Cebu clearance zones. Offline-first via PMTiles with Base64/XOR data obfuscation so maps and routes work without signal. Server-authoritative RPG progression: earn XP, unlock badges, and discover stops across your commute. Live trip sharing with self-destructing links (2 to 15 min, pg_cron sweep), and saved trips with cloud sync and owner-only RLS.

Role
Developer
Stack
Flutter · React · Supabase · PMTiles · A* · Firebase
Live
amping.app (opens in new tab)

L3 · POS System · 2026

NakPOS

A point-of-sale system that works on any device, online or offline. Built for Philippine businesses with BIR compliance built in.

A Progressive Web App that runs on phones, tablets, and laptops, fully offline once authenticated. IndexedDB-backed outbox sync with last-write-wins conflict resolution against Supabase. Multi-rate VAT engine (inclusive/exclusive), Senior Citizen and PWD discounts per RA 9994/10754, X/Z reports, and CSV export. Full restaurant and retail suite: KDS, drag-and-drop floor plan editor, QR ordering, inventory with expiry tracking and weighted-average cost, promotions engine (BOGO/combos/happy hour), recipe BOM auto-deduct, multi-branch loyalty ledger, and ESC/POS thermal printing via WebUSB and Web Bluetooth.

Role
Developer
Stack
React · TypeScript · Vite · Dexie · Supabase · PWA
Live
nakpos.kierabelo.com (opens in new tab)

L4 · Open-Source Library · 2026

Lakaw

A zero-dependency A* pathfinding library extracted from a real transit app. Includes an interactive demo showing A* vs Dijkstra.

A tiny TypeScript A* search library generalized from the routing engine that powers amping.app. The StablePriorityQueue ships verbatim from production, a binary min-heap with sequence-number tiebreaker so ties dequeue in insertion order, making A* exploration deterministic. Zero runtime deps, 4.5 KB ESM / 5.6 KB CJS, types included. 14 Vitest tests including a randomized parity proof (50 trials × 200 mixed ops vs a stable-sort reference). The interactive demo is a side-by-side A* vs Dijkstra visualizer with g-score heat map, frontier visualization, animated path tracing, and 6 preset maze layouts. The map at the top of this page is routed live by this library.

Role
Developer & maintainer
Stack
TypeScript · A* · Pathfinding · Vitest · tsup · SVG
Live
lakaw.kierabelo.com (opens in new tab)
Source
github: kiergabelo/lakaw (opens in new tab)

L5 · Real-Time Data Viz · 2026

Panahon

A no-nonsense weather dashboard for Philippine cities. Every chart is hand-drawn SVG, no chart library, no API key required.

A real-time Philippine weather dashboard consuming the free Open-Meteo API, no key, no auth, CORS-enabled. All charts are hand-built SVG with bezier interpolation, gradient fills, and responsive scaling: 24h temperature area chart, precipitation probability bars, 7-day forecast range strips, and hourly temperature bars per day. Covers 8 PH cities from Cebu to Baguio. Wind compass with gusts, UV index with color bands, sunrise/sunset tracker with day-progress bar, animated canvas rain overlay, geolocation auto-detect, and 10-minute SWR auto-refresh. Zero chart-library dependencies.

Role
Developer
Stack
Next.js · React 19 · Tailwind CSS 4 · SVG · SWR · Open-Meteo
Live
panahon.kierabelo.com (opens in new tab)
Source
github: kiergabelo/panahon (opens in new tab)

L6 · Machine Learning · 2026

Balikas

A Filipino hate-speech classifier trained on 44k social media samples. F1 = 0.917 on held-out test.

XLM-RoBERTa fine-tuned on a combined corpus of 43,892 Filipino social media samples: Cabasag et al. (2019) election tweets + SEACrowd Filipino TikTok transcriptions (Taglish + Cebuano code-switched). Achieves F1 = 0.917 on held-out test, up from 0.765 with Filipino-only training. The TikTok data adds code-switched text that significantly improves generalization. A TF-IDF + LogReg baseline (F1 = 0.749) is included as a floor comparison. Deployed on a HuggingFace Space with a live Gradio demo. Also evaluates zero-shot on a small Cebuano set with documented limitations (constructed eval data). Trained on a free Colab T4 in about 25 minutes.

Role
Author
Stack
Python · PyTorch · XLM-RoBERTa · scikit-learn · Gradio · HuggingFace
Live
Live demo (opens in new tab)
Source
github: kiergabelo/balikas (opens in new tab)
ABOUT

Six years of production software, built from Cebu.

I build fast, accessible products end to end, from typed APIs and Postgres schemas to the last pixel of the interface. Most at home in TypeScript, React, and Node, but I pick up whatever tool makes the product better.

Six years shipping production software for startups and open source. I care about performance budgets, honest offline behavior, and code the next engineer can read.

Also in the stack: TypeScript · React · Next.js · Node.js · NestJS · Prisma · PostgreSQL · Redis · Tailwind · Go · Docker · AWS

CONTACT

What should the next line be?

Email meAvailable for work & freelance