Selected work · 2025–2026

Things I built.
In production.

Full-stack & AI engineer. React apps and production LLM agents, shipped with Docker, GitHub Actions CI, nginx, and self-hosted infra. Multi-marketplace commerce, clinic ops analysis, and teaching people to ship with AI tools. Bogor · C2 English.

Products I shipped

Live surfaces

Founder · Engineer

Eterna LeadCare

Lead-automation product: HMAC-signed intake API, self-hosted N8N enrichment, permanent per-lead tracking numbers, and a live ops dashboard with honest health probes. Built as a product Eterna could ship.

Next.jsReact 19TypeScriptN8NDockerCI/CDnginx
eterna.vstal.inOpen →

Founder · Engineer

Caharaya

Multi-marketplace commerce agent — Shopee & TikTok Shop order sync, refunds, settlements. Self-healing Hermes agent harness on Genkit-validated LLM flows.

PythonFastAPINext.jsPostgreSQLAgents
caharaya.comOpen →

Engineer · Alignment

Gray

Proactive AI companion — Second Brain, Habit Architect, Integration Hub. FastAPI, MeiliSearch vector/full-text, MCP for context-aware agent workflows.

PythonMCPMeiliSearchRAG
gray.alignment.idOpen →

Lab

Alignment

AI lab site — values-adaptive systems, Gray parent brand.

ProductBrand
alignment.idOpen →

Hiring

Alignment · Hire

Co-founder / team hiring surface for Alignment.

alignment.id/hireOpen →

Integration

Mayar

Mayar-related product / payments surface on the vstal stack.

mayar.vstal.inOpen →

Client · Ops

Salama Wellness Center

Client surface + ops: WhatsApp export parsing, hyperbaric capacity modeling, occupancy analysis.

PythonCapacityOps
salama.vstal.inOpen →

Agent skill · StoryScope

noslop

Writing skill grounded in StoryScope: paper construction on long fiction, flow + anti-glue on short prose. Ship bar = a careful human finishes the page — not max VOICE/P(human).

PythonVOICEStoryScopeSkill pack
github.com/vstaln/noslopOpen →

Stack

Languages · tools · infra
Python Languages

Teaching

Vibe coding

Analysis I delivered

Clinic · growth · strategy · certs

Labs & experiments

Open on GitHub · github.com/vstaln