Handiyan Juansah
I build systems that operations teams use every day, and apps for my family and the public after hours.
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See the work →Selected work (06)
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01
Billing Automation
FlexofastBilling dashboard(used by the finance team)
B2C, B2B, inbound, inventory, production, and returns data can be read and exported without opening the database or Excel. Invoice reminders go out on a schedule per client, in Indonesian or English.
~267,000 rows of B2C billing data
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02
Return Management
FlexofastMarketplace returns(synced every 15 minutes)
Return data is pulled in automatically, then the team builds monthly loss reports, appeal evidence, and damaged-item worklists. Every decision and claim is kept in an audit log.
8 marketplaces, synced every 15 minutes
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03
FlexoMile
FlexofastTransport management system
Land and air orders, driver and vehicle assignment, GPS tracking for vendor trucks, proof of delivery, and separate portals for clients and drivers.
Land and air, web and Android
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04
FlexoTrend
FlexofastA history of public TikTok data
Paste a link or an account name, and every reading is stored so the numbers build a history. Numbers that are not published are marked unavailable, never counted as zero.
Unavailable ≠ zero
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05
Kaskita
PersonalFamily finances(used by my family)
Records a family's income, spending, and transfers from the web and Android. The AI assistant only reads the data and never makes up numbers.
Web and Android
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06
RuteKita
PersonalPublic transport in Greater Jakarta(opening soon)
KRL trains on a map from the timetable, combined KRL and TransJakarta routes with fares, and it keeps working offline.
Transjakarta GTFS data and OpenStreetMap.
KRL + TransJakarta, offline
(Hello)
I'm Juansah. I think more than I talk, then build systems that get used every day, not shown off. Designed first, written in code, made in Indonesia.
What I do
Garasi Lab →- 01
Internal systems
Dashboards and workflows for finance, warehouse, and delivery teams.
- 02
Data integration
Pulling data from marketplaces and existing databases, then shaping it into reports.
- 03
Mobile apps
Flutter and React Native, for drivers, families, and the public.
- 04
All the way to use
From design and code to servers and upkeep after release.