Cipta
thought
Engineering
System architecture, models, and code that still holds up five years from now. We write it so someone else can read it.
Software studio & AI lab — Indonesia
We build the frame. You bring the will.
Rangkarsa designs and builds software and AI systems for companies and institutions across Indonesia. From research to release, and onward with your own team.
Where the name comes from
Cipta, rasa, karsa.
Ki Hajar Dewantara named three human faculties: cipta, rasa, karsa — thought, feeling, will. Our name is built from the last two words, rangka and karsa, and those three faculties are still how we divide the work.
Rasa
feeling
Product & design
User research, workflows, and interfaces that make sense to the people using them every day — not only to the people buying them.
Karsa
will
Delivery
Staged releases, clear measures of success, and a handover that leaves your team able to carry it on without us.
Two practices, one team
What we do.
Software Studio
Systems people use every day to do their jobs.
- Internal platforms & line-of-business apps
- Legacy system modernisation
- System and API integration
- Data infrastructure and reporting
- Web & mobile applications
Intelligence Lab
AI that gets tested before it gets trusted.
- Language-model assistants & workflows
- Computer vision for inspection & medical imaging
- Forecasting and predictive models
- Evaluation, benchmarks, and model monitoring
- Feasibility workshops before you invest
Products
What we build for ourselves.
Every so often a problem is too interesting to stop at one client. We turn it into a product.
Runut
Clinical decision support — JKN outpatient care
Traces a patient from a vague complaint to the right clinic, visit by visit until recovery — every step coded to ICD-10/INA-CBG so the BPJS claim stays whole. Runs on-premise in your hospital; clinical decisions stay with the doctor.
Visit Runut ↗Process
Four steps, in order.
We keep the order. Every step ends with something you can hold, and you can stop at the end of any one of them without losing what you already paid for.
-
01
Listen
1–2 weeks
We sit with your team, map the process as it actually runs today, and write down what genuinely needs solving.
-
02
Design
2–4 weeks
Prototypes, architecture, and a cost estimate. Real enough to test, cheap enough to throw away if it is wrong.
-
03
Build
8–20 weeks
Two-week sprints ending in releases you can actually use. No demo that would not survive a real environment.
-
04
Hand over
ongoing
Documentation, training, and a supported period. The goal is that your team stops needing us.
Sectors
Where we work.
We pick a few sectors and go deep, so the first conversation is not spent explaining vocabulary.
Manufacturing & shipyards
Production planning, material traceability, and quality inspection on the shop floor.
Healthcare
Hospital workflows, medical records, and medical image processing.
Public services
Citizen-facing systems that have to stay up when the network does not cooperate.
Energy & resources
Field monitoring, demand forecasting, and compliance reporting.
Start
Tell us what you are thinking about.
Send one paragraph about the problem. We reply within two working days with an honest opinion — including when we think you should not build anything yet.
halo@rangkarsa.id Send an email →- Based in
- Surabaya · Bangkalan
- halo@rangkarsa.id