Willing to relocate: Yes (Salt Lake City, Carson NV, smaller US cities) Technologies: Kotlin, Android (Room/FTS4, Compose, WorkManager), JavaScript (vanilla, zero-GC patterns), HTML/CSS, SQL, FTS4, TF-IDF, ServiceLocator DI

Résumé/CV: https://drive.google.com/file/d/1e-UhVAkgbpoM7MjF_GtCW_PcsYA... Email: zhikun.dev@gmail.com

Independent systems developer, 27.

Filed US Provisional Patent #63/942,399 in December 2025 covering an offline memory lifecycle management system for mobile AI. Reference implementation on Android (M3mo Vault): FTS4 + TF-IDF hybrid search at 0.78 microseconds/memory on 10K-entry scale, 7-factor decay algorithm validated via ablation study (12x weight differentiation vs 2x baseline), 7-layer ServiceLocator DI replacing Hilt.

Also building Entropix Engine — a zero-GC browser game engine in vanilla JavaScript sustaining 3,000+ entities at 60 TPS. Structure-of-Arrays memory layout, GridHash spatial partitioning, deterministic fixed-timestep loop, featuring an adaptive grid-sampling fix resolving buffer overflow on high-refresh-rate displays. Live prototype on https://retroindex.org. 60 days into development, 13 milestones shipped. Weekly devlog on r/gamedev.

Past commercial work: scaled an e-commerce operation from $20K/mo to $140K/mo (7x) over 2 years through hand-coded HTML and SEO engineering — 700+ product pages under strict eBay platform constraints (no external CSS/JS allowed), with automated template pipeline reducing launch time 20%.

Background: BS Data Analysis Psychology, UC Davis (2021).

Looking for: contract or full-time remote roles in mobile AI infrastructure, on-device AI memory systems, performance-critical JavaScript/TypeScript, or e-commerce engineering. Open to indie hacker collaborations and Show HN partnerships.

GitHub: https://github.com/PhantomCyclops0079

Portfolio: https://retroindex.org