B.Eng. in Electrical Engineering (Diponegoro University) · Embedded Systems, Real-Time DSP & Systems Software · Bekasi, Indonesia

Spatial audio synthesis meets closed-loop physiology in native Swift 6 and Metal across iOS 18, watchOS 11, visionOS 2, macOS 15, and AUv3 (63 files, 46,959 LOC, zero external dependencies).

• visionOS 2 Spatial Performance: 90 Hz Reverse-Z .greaterEqual stereoscopic CompositorServices rendering with sub-12 ms spatial pinch gesture latency (7.67 ms slew / 9.1 ms E2E) and wait-free os_unfair_lock_trylock.
• Physical Acoustics: 128-tap KEMAR HRIR UPOLS FFT convolver and 2D/3D FDTD physical acoustic waveguide with cubic PML boundaries delivering 51.22 dB reflection attenuation across 4,096 CFL steps.
• Optics & Metal Ray Tracing: 4,096-ray hardware acoustic ray tracing with -91.6% global loads and < 6.5 ms GPU frame governor headroom.
• Quantum Tensor & Biometrics: Pre-allocated χ_max = 16 Quantum MPS tensor network (0 heap allocations, 2.99e-10 DMRG convergence), 30.56 dB SPWVD (49.90 dB midpoint, 0 real-time heap allocs), and 14.65% drop & 95 ms Pareto jitter (0 false spikes). Streams Apple Watch RR intervals over 64-bit FNV-1a binary bridge into Lomb-Scargle HRV and 4-ch BLE EEG RLS filter (30.31 dB ocular blink suppression).
• Verification: 12/12 SHA-256 verification stages passed across 34 test suites.

Distributed storage, stripped to bare metal. Zero-dependency RESP3 store, 3-node Raft consensus engine, HNSW vector search, and disk LSM-tree in pure safe Rust (#![forbid(unsafe_code)], 24 modules, 19,200 LOC, 0 external crates).

• High-Throughput Sharded Core: 564,993 MIXED ops/s, 505,716 GET/s (p50 = 39.66 µs), 307,853 INCR/s, and -95.46% SET p99.9 latency tail reduction (7.16 ms) across 50 pipelined clients.
• Engine Architecture: 64 CachePadded shards, 16-stripe tx_exec_fence, in-memory RwLock<LsmState> MemTable, and zero-copy RespParser::parse_flat_command + get_into zero-allocation frame execution.
• Vector & Full-Text Search: Multi-layer HNSW graph with 8-bit scalar quantization (SQ8, 4× memory compression) sustaining 173,007 VSEARCH/s at 93.3% Recall@5, Okapi BM25 inverted index with LEB128 delta postings, and Facebook Gorilla XOR time-series compression.
• Consensus & Durability: 3-node TCP Raft consensus verified under automated Jepsen fault injection (199 committed ops, 0 stale writes), 4 KB CRC32-verified SSTables, and RFC 8439 ChaCha20-Poly1305 AEAD snapshot encryption.

100% self-contained Blender 4.0–4.3 procedural 3D diorama generator, binary glTF 2.0 serializer, software Z-buffer rasterizer, and lossless BT.709 container muxer in pure Python (stdlib only).

• Procedural Worldbuilding: 32 tracks, 0 external textures, 579 procedural objects across 10 collections, 2 rigged armatures, and 4 shared ShaderNodeGroups (-32.6% shader node reduction) alongside the GN_Cyber_Rain_Field geometry node dynamics.
• Spec-Compliant Serialization: Binary glTF 2.0 serializer (90,766 vertices, 170,840 triangles, 4.59 MB GLB) and zero-dependency software Z-buffer rasterizer with Z=0 planar reflections, separable Neon Bloom, and AgX tone mapping across three 1280×720 camera cuts.
• Lossless BT.709 Video Mux: 240 frames (10.0s @ 24fps) BT.709 (colr nclx) multiplexer into RIFF/AVI 1.0 (46.17 MB) and ISO-BMFF H.264 I_PCM IDR MP4 (24.16 MB).
• Verification Integrity: 100% SHA-256 manifest match across all 6 Phase 7 artifacts and 32/32 automated CI tracks passed on Windows & Linux.

Offline-ready cognitive and technical exam simulator and engineering calculator.

• Assessment Engine: 45 verified questions across United Tractors (UT) Cognitive, UT Tech & Infra 14929, and Formulatrix System Integration Engineer.
• Interview & Compliance: 8 STAR behavioral response cards, automated claim-boundary scanner, and 7/7 pytest verification suite.

• 🔌 Embedded Systems & Firmware: Timer-triggered 12-bit ADC acquisition with DMA on STM32F411 (4 kHz), cascaded Biquad IIR causal digital filtering (HPF, LPF, 50 Hz notch), RMS/MAV feature extraction, and 115200-baud UART telemetry.
• ⚡ Industrial Electrical Infrastructure: Internship Trainee at PT Angkasa Pura Indonesia / InJourney Airports (Soekarno-Hatta International Airport UPS/converter systems, 20 kV medium-voltage distribution, transformer protection relays).
• 🌐 Web Architecture & Leadership: CTO / Technical Lead at ENVIID Carbon Solutions — sole developer of enviid.web.id with interactive carbon calculator and digital MRV workflow.
• 🛡️ Verification Discipline: Author of 20+ open-source verification labs with cryptographic testbench locks (SHA-256), AST assertion floors, mutation testing gates, and strict reproducibility bounds.

Portfolio & Evidence: ardhyanovri.my.id · Direct Contact: ardhyasan@gmail.com