Software engineer working across systems, models, and constrained platforms.
I follow a requirement across layers: service topology, model execution, browser evidence, product interfaces, or an input driver. The stack follows the constraint.

• Fradium - WCHL 2025 Fully On-Chain Track winner. On a five-person team, I contributed cross-chain transaction-risk analysis, Rust/ONNX/Wasm inference, stable model persistence, ICPSwap integration, wallet features, and Paylink. The project also placed first in the qualification and Indonesia rounds and second in Asia.
• Marketizen - backend and deployment owner. I built a Go marketplace as a modular monolith with PostgreSQL, RabbitMQ, Redis, PgBouncer, Traefik, and Docker Swarm. A 1,000-virtual-user plateau completed 20,320 requests with all 40,640 semantic checks passing at 328.57 ms p95 latency.
• Nara Wallet - NextGen Agents Hackathon winner. I contributed multi-exchange market-data acquisition, deterministic feature scaling, and LightGBM-to-ONNX execution-cost inference for a Wasm-compatible conversational wallet.
• SpecHeal - Refactory Hackathon 2026 second place. On a two-person team, I built evidence-gated Playwright recovery with DOM and screenshot capture, structured AI evaluation, browser rerun proof, patch previews, and audit trails.
• Nabu A1931 Bridge - shipped compatibility work. I built native Android multitouch and Windows Precision Touchpad support for an A1931 Bluetooth keyboard case on Xiaomi Pad 5, with public source, guarded packages, checksums, and rollback documentation.
• PayGate - funded development. A paid API gateway using Stellar payment rails and Soroban escrow boundaries, accepted for a USD 5,000 Stellar Community Fund Instaward.

• Backend and distributed systems: Go, PostgreSQL, RabbitMQ, Redis, event-driven architecture, API gateways, Docker, Kubernetes, and load testing
• Applied ML systems: Python, TensorFlow/TFX, PyTorch, ONNX, LightGBM, XGBoost, graph neural networks, and constrained inference
• Constrained platforms: Rust, WebAssembly, Internet Computer, Stellar/EVM, Android input systems, Bluetooth HID, UMDF, and Windows on ARM
• Product and quality: TypeScript, React/Next.js, Playwright, CI/CD, human confirmation flows, interface prototyping, and reproducible validation

• Private reverse engineering of the Qualcomm camera/CDSP path behind the broken Xiaomi Pad 5 native Windows on ARM camera stack. This remains an open engineering problem, not a claimed solution.
• Private self-consistency research separating proposal generation from belief accountability through compression, provenance, counterfactuals, sandbox tests, and composition. This remains WIP.

Smaller public experiments cover wallet orchestration, execution-cost prediction, Bitcoin and Ethereum forensics, and recommendation mechanics. Not every repository needs to pretend it is a product.

Software Engineering, Telkom University | GPA 3.89/4.00 | thesis completed with grade A
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