AruSaku
LiveA project and finance workspace for Indonesian studios — designed, built, shipped and operated solo.
ToolsNext.jsTypeScripttRPCPrisma
I'm Ferdi
I build software end to end, and run one myself.
Software engineer, four years in. I design the interface, write the API, model the data, and run the path that ships it. Twenty-plus production apps, three legacy migrations, and AruSaku, a SaaS I run myself.
One engineer, every layer
The path a feature takes from a schema to something a person can use. I work in all of it.
4 years shipping
20+ apps in production
3 legacy migrations
1 SaaS I run alone
Data
- PostgreSQL
- Prisma
- Supabase
- Firebase
- MySQL
- MongoDB
- Schema design
Services
- Go
- tRPC
- Node / Express
- REST design
- JWT auth
- Webhooks
- Idempotency
Interface
- React
- Next.js
- TypeScript
- Tailwind
- Radix / shadcn
- TanStack Query
Delivery
- GitHub Actions
- CI/CD
- Vercel
- pm2
- Prisma Migrate
- Scheduled jobs
- Preview to production
Quality
- Vitest
- Playwright
- Zod validation
- Code review
- TypeScript strict
Design
- Figma
- Design systems
- Design tokens
- Prototyping
- Accessibility
the pattern
Three companies, one problem
Every role I've been hired into turned out to be the same job underneath: an application that had outgrown the stack it was written on.
Featured projects
Two products I helped shape from nothing, and two I was hired to rebuild.
Custour
LiveAn AI travel planner that turns a sentence about your trip into a full itinerary — with real flights, hotels and places attached.
ToolsNext.jsTypeScriptNextAuth v5TanStack Query
A travel platform moved off a Laravel + Vue monolith, without losing its search rankings.
ToolsNext.jsTypeScriptTailwindREST APIs
Lumbung internal platform
PrivateTwenty-plus business-critical applications, and the Go services underneath them.
ToolsNext.jsTypeScriptGoFirebase
Four years, five companies
Client work, three internships, a travel platform, and now a twenty-app internal platform. Every year has moved further down the stack.
Feb 2025 to Present
Full-stack Developer
PT Lumbung Mandiri Bersama
Building and running the internal application platform — twenty-plus production apps across multiple business units, and the Go services underneath them.
Aug 2024 to Jun 2025
Frontend Developer
PT Teknologi Pandu Wisata (Pandooin)
Led the frontend half of moving a travel platform off a monolithic Laravel and Vue codebase onto Next.js — with SEO as a hard requirement throughout.
Mar 2024 to Jul 2024
Frontend Developer Intern
Thinkspedia
Three dashboard products in five months, while helping move the codebase onto Next.js.
Capability
What I do, and what proves it
No technology listed here without work attached to it. Six disciplines, eighteen pieces of evidence.
Product engineering, end to end
Deciding what to build, building every layer of it, pricing it, shipping it and keeping it alive. Not a job title — something I do on my own time, with real customers on the other side.
- Product definition
- Subscription billing
- Payment integration
- Multi-tenancy
- Release & support
Backend, APIs and data
The half a lot of frontend engineers hand off. I write the endpoints my own interfaces call and model the data underneath them, so the contract between the layers is a conversation rather than a ticket.
- Go
- tRPC
- REST design
- PostgreSQL
- Prisma
- Supabase
Infrastructure and delivery
Getting code from a branch to a paying customer, then knowing when it breaks. I run my own environments, my own migrations and my own scheduled jobs — nobody else is on call for AruSaku.
- GitHub Actions
- CI/CD
- SSH + pm2 deploys
- Vercel
- Preview → production environments
- Prisma Migrate
Product design and UI/UX
I design the thing before I build it. Third nationally in GEMASTIK's UI/UX competition, and every screen in AruSaku is a decision I made rather than a spec I received.
- Figma
- Design systems
- Interaction design
- Accessibility
- Design tokens
- Prototyping
Frontend at scale
Component systems that stay consistent past the first ten pages, and applications that keep working long after the launch post.
- React
- Next.js
- TypeScript
- Tailwind
- TanStack Query
- Zustand
- 20+ business-critical apps in continuous productionLumbung Mandiri, 2025–
- 40+ reusable components across 15+ pages, two productsPandooin
- HRIS, attendance and voting-monitor dashboardsThinkspedia
Legacy migration
Taking an application off a stack that's holding it back, without stopping the business while it happens. Three companies, three times, each one bigger than the last.
- Incremental rewrite
- SEO preservation
- REST integration
- Refactoring
- Code review
- Laravel + Vue monolith → Next.js, SEO held throughoutPandooin, 2024–25
- MVVM legacy → Next.js across three dashboard productsThinkspedia, 2024
- React + Bootstrap + ANTD → Next.js, 10+ pages restructuredGyloop, 2023
Contact
If you need a software engineer who can take the whole thing, I've done it before.
Open to remote roles, migration work and product builds. The fastest way to reach me is email.