Yabes Theodorus portrait
About8+ years experience

I’m Yabes— a fullstack engineer who lives in the unglamorous half of the stack.

Eight years across fintech, e-commerce, and POS. I pair polished Next.js frontends and GSAP motion with NestJS & Node.js backends, event-driven microservices, and Redis-powered real-time features. Owns payment integrations (Midtrans, Stripe) from checkout to webhook reconciliation — the part that always seems to be left for someone else.

Experience

Where I’ve been building.

  1. 02Dec 2017Jun 2026

    Head of IT / Lead Engineer

    Walletku · Jakarta, Indonesia

    • Led engineering as Head of IT — owned the team, product roadmap, and an internal admin dashboard for ops, finance, and support.
    • Integrated multiple payment gateways end-to-end — checkout flows, webhook ingestion, idempotent transactions, and ledger reconciliation.
    • Shipped a multi-store POS & inventory platform — real-time stock/sales sync, barcode checkout, and operator analytics.
  2. 01Nov 2015May 2017

    Mobile Developer

    Walden Global Services · Indonesia

    • Developed native Android and iOS applications for production environments.
    • Collaborated closely with designers and backend engineers to deliver complete features.
Education
  • Bachelor of Information Technology

    Institut Teknologi Harapan Bangsa, Bandung

    2011 – 2015GPA 3.41
What I’m known for
  • Payment integrations end-to-end — Midtrans + Stripe webhooks, idempotent settlement, ledger reconciliation.
  • Real-time backends with Redis Pub/Sub and Kafka/Redis Streams.
  • Polished Next.js frontends — SSR-first, GSAP signature moments, sub-second loads.
  • Multi-tenant SaaS architecture — Turborepo, NestJS services, Zod schemas shared end-to-end.