Hi there.

I'm Caesar Bimantara.

Full-Stack Developer · AI-Native Engineer

I ship AI-native products end-to-end.

Based in Indonesia, working solo end-to-end.

Production SaaS, AI integrations, native Android, self-hosted infra.

Open to full-time, remote & freelance · Q3 2026

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Selected Work

Built with intent.

Filter by category, paginate one project at a time.

Marryio — Indonesian wedding invitation SaaS, mobile view

2026 — present · SaaS · Indonesian wedding market

Production

Marryio

Wedding invitation SaaS for the Indonesian market. Three user roles (Client, Reseller, Superadmin) in one platform, twenty unique templates with their own motion, real Indonesian payment rails, and a Wedding Planner workspace on top. Built solo, end-to-end.

0templates

0payments

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2026year live

Built and shipped solo, end-to-end
Three user roles in one platform — Client, Reseller, Superadmin
Indonesian payment rails (QRIS, GoPay, VA, ShopeePay)
Reseller credit ledger with refund flows
Twenty templates, each with its own scene system and motion
Wedding Planner workspace with eight tabs and two-way timeline sync

Next.jsSupabaseTailwindGSAPMidtransCloudflare R2Upstash RedisResend

Visit live Read case study

Upcoming

Next up.

Concepts and demos without polished details yet.

Public · GitHub demo

ETA · 2026

Millennial beauty brand landing for fictional 'Dewy Co.' — playful claymation visuals, nine-section product narrative, Indonesian-first conversion path. Repo public on GitHub; screenshot pending.

Get in touch →

Concept · 2026

ETA · 2026

Mobile-first vehicle marketplace for the Indonesian market — listing, discovery, and buyer-seller chat for how local buyers actually shop.

Get in touch →

About

Behind the code.

Bio

I'm Caesar Bimantara — a Computer Science graduate (S1 Teknik Informatika) who learned engineering by shipping, not by tutorial.

I started in 2023 building full-stack systems for local Indonesian businesses — a pharmacy chain, then a perfume retailer — moved into remote engineering in 2025, then built Marryio in 2026: a multi-tenant invitation SaaS with Indonesian payment rails, 20 templates, and 3 user roles. Solo, end-to-end.

Now I work as an AI-Native Engineer — wiring LLMs, agents, and RAG into production systems where they earn their keep. Real integrations on real products, not buzzword retrofits.

Based in Indonesia. Async-first, comfortable across timezones. Open to full-time roles, remote work, and freelance — startup, agency, or in-house.

Timeline

2026MBG Dashboard v0.1.0 — Indonesian gov-tech, MIT open source
2026Marryio production — marryio.id live, multi-tenant SaaS
2026Building Tarotscope — native Android, launching Aug
2026LandMarket — Premium landing page for digital transformation services
2025Remote engineering · Data Entry.Coles
2024Full-stack developer · Azzwars Perfume
2023Full-stack developer · Apotik Medika Farma
2019–2023S1 Teknik Informatika

Toolbox

LLM APIs
RAG
Agents
Tool use
pgvector

AI dev

Claude Code
Codex
OpenCode
GLM
Kimi

Web

React
Next.js
Astro
Tauri 2
TypeScript
Tailwind
TanStack
GSAP

Mobile

Kotlin
Jetpack Compose
Material 3
Hilt
Room

Data

PostgreSQL
Supabase
SQLite
Drizzle
Dexie
Redis
Zod

Ship

Docker
Vercel
Cloudflare
Coolify

Workspace

VS Code
Android Studio
Notion
Slack

Capabilities

The full stack, deployed.

Six areas. Tap any tile for the full toolbox.

Process

How we'll work together.

Five steps from first call to production handoff. Predictable, async-first, no surprises.

Writing

Notes from the build.

Read all writing

Contact

Let's build something together.

I reply within 48 hours. If it's a fit, we hop on a 30-min discovery call — no hard sell.

Other channels

GitHubgithub.com/Rimba-maker↗Instagram@ccbmantara↗

AI integration — LLMs, RAG, agents in production
Full-stack SaaS — design system to self-hosted infra
Full-time engineering roles — remote-first