The tech stack we use to build enterprise-grade products
PT Rancangin Aja Teknologi — or simply RAT — is a software house & AI product studio. We build web & mobile applications, AI-powered solutions, and in-house SaaS products for businesses across industries and countries.
From early-stage startups to enterprises, we believe every business problem has an elegant technology solution. Our job is to design it together with you.
To be a software house & AI product studio helping businesses around the world transform digitally and sustainably.
To build high-quality digital products through a collaborative, transparent process oriented toward real client outcomes.
Integrity, innovation, and long-term commitment. We're not just a vendor — we're a growth partner for your business.
From idea to launch, from MVP to AI solutions — we're ready to be your technology team.
Bring AI into your product and operations: LLM integration, AI agents & chatbots, RAG over your internal documents, and workflow automation — built secure and production-ready.
Custom web & mobile application development from scratch — using modern stacks like React, Next.js, Node.js, Flutter, and Laravel.
Build your SaaS product — from MVP, multi-tenancy, billing integration, to enterprise scale.
User research, wireframing, prototyping, and product design that's user-friendly and memorable.
Cloud infrastructure setup (AWS, GCP, DigitalOcean), CI/CD pipelines, monitoring, and cost optimization.
Support services, 24/7 monitoring, bug fixing, and feature development for live applications.
Four things that set us apart from a typical agency.
Talk to the engineers actually doing the work — no account-manager middleman.
Every project is built by our own team. No third-party vendors.
Tests, reviews, docs — not optional, our default way of working.
Support, monitoring, and iteration after go-live. We're not a one-shot vendor.
Besides client work, we also build our own SaaS products and tools — ready to power your business.
Turn long videos into short, meaningful clips. Find hooks with AI, clean up transcripts, add captions, and export — on Mac, iPhone, iPad, and Android.
A smart way to manage boarding houses & rentals: properties, units, tenants, and rent billing — with reminders for overdue payments.
Every project runs on a clear workflow — you always know the progress, deliverables, and timeline.
We understand your business problem, target users, and product goals.
Technology roadmap, architecture, wireframes, and clear UI/UX design.
Weekly sprints, transparent via demos & docs, with QA at every milestone.
Production go-live, monitoring, support, and iteration based on feedback.
The person behind Rancangin Aja's vision and direction — making sure every product is built to the same standard.
FounderFounder & CEO · Software Engineer
A software engineer building mobile, web, and backend systems — from native & Flutter apps to APIs and dashboards. The guiding principle is simple: clean, maintainable code.
Leads the development of Rancangin Aja's in-house products from idea to release, with a focus on products that are practical, measurable, and built to last.
Supported by a network of engineers & designers as each project requires.
Honest writing on AI, software development, and the business decisions behind them.
Eight things to check before you hire an AI development company, and the evidence Rancangin Aja can show for each one: shipped AI products, cost-aware design, and a clear process.
Why Japanese companies outsource software development to Indonesia: a 2-hour time difference, common reasons offshore projects fail, fixed-scope vs lab models, and how to start.
An honest story of building Cuplikin, our AI video clipper: five weeks to the Mac App Store, a rejection from Apple, then iOS and Android from a single Flutter codebase.
Have a casual chat with our team — free, no commitment. Let's talk about ideas, scope, and estimates.
Tell us your needs — we'll help craft the best solution. Initial consultation is free.
We'll respond within 24 hours.