4
public knowledge graphs integrated
AI · Knowledge Graph · 2023
VektorPedia
A search engine that finds insect vectors of plant viruses by integrating four public knowledge graphs and running network analysis on top.
Software Engineer — Greater Jakarta, Indonesia
Moh. ZulkifliKatili
I build systems, products, and experiences that solve real problems.
I build payment systems, APIs, AI / RAG tools, knowledge graphs, data products, interfaces.
01 / Selected work
Problems solved, not stacks collected.
3
provinces analysed
Data · Geo-web · 2024
Spatial Sales Intelligence
Spatial analysis and an interactive dashboard that maps sales performance across 3 provinces down to 7,394 villages for a Daihatsu dealer group.
4
user roles with distinct permissions
Product · Full-stack · 2021
TimeMarket
A workload-management PWA for Bank Indonesia's Gorontalo office that balances how work is delegated across employees.
20+
API modules delivered
Backend · SaaS · 2023
Contag School
Backend API modules for a SaaS platform that manages university academic affairs.
15
admin modules
Backend · Admin · 2022
Digimosque
Nearest-mosque search API and a 15-module admin panel for a digital mosque platform.
4
conflict rules enforced
Product · Algorithm · 2022
Jadwalin
Faculty-scale course scheduling with conflict rules and a greedy auto-generator, fed by Excel exports instead of a locked API.
02 / Experience
Where I've been building.
Building payment systems — payment gateway, PPOB, B2B/B2C flows and APIs.
- Maintain the payment gateway core, handling hundreds of thousands of transactions a day.
- Bank integrations under SNAP (Bank Indonesia's open-API standard), including the access-token and request-signature layer.
- Standardised PPOB biller integrations behind one schema and one interface — adding a new service went from about two weeks to about three days.
- Moved busy transaction jobs onto asynchronous message queues; new payment gateway and PPOB services in Go as parts of the monolith are split out.
- Handle the PPOB project with a team almost entirely in Shanghai.
- Zero-downtime releases with blue-green deployment, on Huawei Cloud with Alibaba Cloud as the disaster-recovery site.
- Ledger integrity checks, revertible data patches and dispute-resolution tooling.
- Payment Link front end; code review and onboarding new engineers.
A suite of open-source developer tools — database studio, database management, AI retrieval (RAG) and cloud storage.
- Front-end contributions in Vue.
Led development of TIARA v3, Bank Indonesia's AI policy chatbot — architecture, features and end-to-end deployment.
- RAG over PostgreSQL + pgvector with Gemini, plus a pandas table-query tool the model can call.
- Self-hosted GLiClass classifier screening incoming prompts for injection attempts.
- 88% response accuracy and 100% feature-test success, including out-of-scope handling.
- User and admin portals in React / Next.js, with full technical documentation.
Led development of RAISA, a risk-assessment system for transaction data from payment service providers (PJP) and money changers (KUPVA).
- Net Risk Assessment (NRA APU) prediction reaching 95% accuracy with machine learning.
- Analytical risk dashboard over 50+ million transactions a month.
- Cut manual analysis time by up to 30% through automation.
Spatial sales intelligence for a Daihatsu dealer group across three provinces.
- Spatial analysis of sales across 3 provinces, 54 districts, 709 sub-districts and 7,394 villages.
- Plotly dashboards, FastAPI spatial backend and a Livewire web app.
API modules for a university academic-affairs SaaS.
- 20+ NestJS API modules and 800+ commits, following SOLID principles.
- Written in TypeScript, backed by Supabase.
03 / Capabilities
What I bring to a team.
Grouped by what they let me do. Tools change; the ability to reason about systems, data and people doesn't.
01
Backend
APIs, services, transaction flows
- PHP / Laravel
- Go (GoFiber, Gin, go-zero)
- Node.js / NestJS (TypeScript)
- Python / FastAPI
- C++ (CLI utilities)
- REST APIs · SNAP bank integration
- Kafka · Redis queues
- PHPUnit
02
Frontend
Interfaces that stay maintainable
- React / Next.js
- Vue / Nuxt
- TypeScript
- Livewire
- Tailwind CSS
- PWA
03
Data
Storage, analysis, visualization
- PostgreSQL
- MySQL
- MongoDB · Neo4j
- Redis
- SPARQL / RDF
- Pandas · psycopg2 · Plotly
- Ledger reconciliation
04
AI
From research to usable tools
- RAG (pgvector)
- LLM apps (Gemini, LangChain)
- Tool calling
- Prompt-injection guardrails
- Hugging Face open-weights models
- Knowledge graphs
- Network analysis
- Classic ML
05
Infrastructure
Shipping and keeping it running
- Docker
- CI/CD (GitHub Actions, Jenkins)
- Blue-green deployment
- Huawei Cloud · Alibaba Cloud (DRC)
- Kubernetes (deploy & operate)
- Linux
- Git
06
Design
Brand, UI, and illustration
- Brand identity
- Figma
- Illustrator
- Photoshop
- Design systems
04 / GitHub activity
Shipping, week after week.
My public contribution graph over the last twelve months — most client work lives in private repos, so this is the visible slice.
05 / About
Engineer by training, designer by habit, researcher at heart.
I started as a graphic designer in a campus open-source community, moved into web development, and went deep into knowledge graphs and machine learning during my master's at IPB University.
Today I build payment systems and backend services from Greater Jakarta — and I still care about how things look and feel. Kiki is what most people call me.
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