Work & projects.

Footfall analytics from existing CCTV — batched YOLO11 detection, per-camera ByteTrack, trigger-line entry/exit counting, and SigLIP 2 zero-shot gender and adult/child demographics voted over each track. FastAPI console with live overlays for up to six cameras.

Cross-camera person re-identification from scratch — per-view IoU tracking, colour-histogram or ResNet50 appearance embeddings, and EMA-prototype gallery fusion so one person keeps one ID across cameras. The self-scoring synthetic demo runs fully offline.

On-device Perceive → Reason pipeline — Core ML + Vision on the Neural Engine for perception, a swappable LanguageModel (Apple Foundation Models or Claude) for reasoning. MobileNetV3 conversion with int8 quantisation plus a SwiftUI reference app.

Enterprise PPE monitoring on NVIDIA Jetson — TensorRT FP16 with zero mAP loss, Forward Hooks for Layer-Collapse mitigation, dynamic batching, and an async FastAPI gateway handling 15×1080p streams at ≤66.7 ms.

Production KYC verification — high-concurrency Go 1.22 gateway (JWT, rate limiting) + Python CV service: Indonesian KTP OCR, YOLOv8 face detection, image-quality gating, and selfie liveness. Full CI/CD.

Plain-language delivery routing — GPT-5.6 parses a described run into a schema-validated routing problem, a pluggable solver (Clarke-Wright reference, OR-Tools ready) plans it, and GPT-5.6 explains the tradeoffs alongside an interactive map.

Reads FAA / EASA Airworthiness Directive PDFs and answers “is aircraft X affected by AD Y?” — deterministic clause isolation, schema-bound LLM extraction, multi-run stability checks, and grounding validation against the source text.

Adaptive learning platform — a Claude-powered tutor and quiz generator, course library, learning analytics, and XP / badge gamification with JWT auth.

Next.js + GPT-4o pipeline for multi-step document workflows — Zod-enforced structured outputs, tenant-isolated RAG context, and a self-scored confidence gate that hands low-confidence cases (below 0.92) to human review.

Unifies AML/fraud detection, credit-risk underwriting, and marketing analytics via LangGraph's cyclic multi-agent orchestration, MCP tool registration, and a human-readable explainability layer for compliance.

AI meeting assistant on the Claude API — transcript → executive summary, action items, decision log, key topics, and a follow-up email draft. FastAPI + static frontend via Nginx, Docker Compose.

Full-stack Node.js chatbot on the Gemini API with token-by-token streaming and multi-turn context management.

Cyclic, stateful multi-agent experiments on Google Cloud Platform — exploring LangGraph graph architectures for autonomous planning and tool use.

Design + FastAPI reference scaffold for ~60k financial documents a day — routed hybrid OCR, tiered extraction, fraud screening, and a calibrated confidence gate that auto-approves or escalates to human review. UU PDP and OJK compliance designed in.

Bank-scale OCR platform architecture for ~2M confidential documents a month at 99.9% availability — regional data planes for residency, zero-trust security, OpenShift GPU node pools, and a tested tamper-evident hash-chained audit log.

Verify a KTP off-chain, then mint a non-transferable ERC-5192 soulbound credential from an issuer-signed EIP-712 attestation — no KTP, NIK or biometric data ever touches the chain. One human, one credential.

Autonomous hexarotor — onboard PyTorch detection on Raspberry Pi, ROS sensor fusion, GPS-denied obstacle avoidance, and competition failsafes.

Team SOUNDBOT’s modular AUV — full stack — underwater CV under turbidity, 6-DOF thruster vectoring, buoyancy control, and a dive→navigate→detect→surface mission state machine.

Dual-processor AGV — Raspberry Pi vision + planning over serial to Arduino motor I/O, OpenCV trash classification, line-following, and pickup actuation.

Harmful algal bloom early-warning proof-of-concept — estimates phytoplankton density in microscope images and raises AMAN / WASPADA / BAHAYA alerts. Go gateway + FastAPI detection service, with a client-side web demo.

Elo + Poisson match model with client-side Monte-Carlo tournament simulation conditioned on real results; live knockout bracket and in-play scores fed by a keyless ESPN pipeline on a GitHub Actions schedule.

Interactive single-file microsite for a ten-year smart-city master plan for Kota Semarang — governance, transport, flood and subsidence resilience, and public services, phased across four stages with go / no-go gates.

Dense object counting, extreme class-imbalance handling with custom losses, and fine-grained taxonomic classification of microscopic plankton — full EDA → baseline → error-analysis notebook.

AI-powered quiz platform — Django MVC with contextual question generation (not static retrieval) and real-time scoring.