Apple Developer Academy
iOS Engineer · App Store
KoalaFit
Workouts and meals from your body. Gemini writes the week. Scan a plate. Live burn on Apple Watch.
Hello, I'm
Otniel Simanungkalit
Go + GinBackend systems
SwiftUIApple Academy
Fullstack
Engineer
exploring iOS
Two years on payment APIs, KYC, and wallet dashboards. Now native iOS at Apple Developer Academy.
About me
I'm a fullstack engineer. First I shipped payment APIs, KYC, and ops panels at YourPay. At Apple Developer Academy I build native iOS: KoalaFit, Marble, CraFit, Lana, Catat.in.
Education
Mar to Dec 2026
Apple Developer Academy · Cohort 7
iOS Engineer · Swift & SwiftUI
2021 to 2025
Institut Teknologi Del
D4 Software Engineering
Technical skills
Skill set
Backend
Gin · Fiber · Microservices
Native SwiftUI · Vision · WatchKit
Delivery Jenkins · Grafana · Sentry
Native SwiftUI · Vision · WatchKit
Delivery Jenkins · Grafana · Sentry
Selected work
Things I've shipped.
1 / 11
Apple Developer Academy
iOS Engineer · Challenge 4
Marble
An avatar that grows when you scroll less. Stop the feed, then offer a better next step.
Apple Developer Academy
iOS Engineer · AR
CraFit
A craving is a signal, not an order. Tap when it hits, then chase an object in AR until the urge fades.
Apple Developer Academy
iOS Engineer · TestFlight
Lana
Set a distance. Loop or A to B. Lana draws the line, then weather and live nav on the ride. Same session on Apple Watch.
Apple Developer Academy
iOS Engineer · Vision
Catat.in
An expense tracker. Scan a payment receipt to log the spend, then set a monthly budget so you know how much you plan to spend this month.
YourPay · Live
Next.js · TypeScript
YourPay Landing
The public site at yourpay.co. Hero, features, testimonials, partners, and app download. Next.js and TypeScript.
01
Internal
YourPay · Internal
KYC Document Checker
Go integrations to Sijitu, Dukcapil, and Verihubs. If one provider fails, the check moves to the next, so YourPay operators are not stuck on a single vendor.
02
Internal
YourPay · Internal
Wallet-as-a-Service
React dashboard for operators, and the Go APIs it consumes. PRs to main run lint and CVE checks in GitHub Actions before merge.
03
Internal
YourPay · Internal
CMS Admin Panel
Filament is only the UI. Go sits underneath. Customers, roles, PPOB, KYC review, and transactions in one panel.
Freelance · Live
Laravel · Catalog + Admin
Tenno Cita Perkasa
Storefront for building materials, and the admin behind it. Operators manage catalog and stock, then write a quotation for a client. Media on Cloudinary, live on a VPS.
08
Freelance · Web + API
Freelance · Web + API
Pedika App
Laravel admin, plus Go APIs for that admin and for the mobile app. Media on Cloudinary, hosted on Railway.
Background
Where I've been.
Feb 2025 to now
- Public landing at yourpay.co: Next.js and TypeScript. Hero, features, testimonials, partners, and app download.
- KYC Document Checker: Go integrations to Sijitu, Dukcapil, and Verihubs, with fallback so a failed provider does not block operators from checking a user.
- Wallet-as-a-Service: React dashboard, Go APIs the dashboard consumes, and GitHub Actions for lint and CVE checks on PRs before merge to main. Top-up and withdrawal through Xendit.
- CMS ops panel: Filament on the surface, Go underneath. Customers, access, PPOB, KYC review, and transaction controls in one place.
Sep to Dec 2024
- Shipped Laravel + SQL Server APIs for ASTRA Honda’s Mokita digital platform, in a production backend team.
Contact
Have a role in mind? Write me.
Jakarta. Email is fastest. LinkedIn and GitHub for the work. Instagram and TikTok if you want to look around.
otnielkalit25@gmail.com