Deep dives from shipped systems, working demos, and client-safe delivery notes. Rough edges included.
Launch readiness and idempotency
Field notes from a closed-source escrow build: retries, idempotency, scheduler locks, mobile money paths, and the gap between feature-complete and launch-ready.
Launch hardening review
A security and launch pass across the Sellavie backend, dashboard, mobile app, CI, logging, and generated artifact hygiene.
Trial feedback and retention
Building trial feedback collection and launch incentives — what looks like a simple feature once you trace it through billing, email, dashboard state, and admin settings.
NDA-safe hiring narrative
Most of my interesting recent work is under NDA. Here is how I think about what to share and why the system shape is usually more useful to describe than the implementation details.
Mobile and operations flow completion
Turning escrow state, disputes, KYC, bank accounts, messaging, and notifications into mobile and operations flows — and what that exposed about the backend contract.
Payment and admin hardening
Hardening provider boundaries, admin access, cache headers, rate limits, webhook validation, and transaction service behavior on a closed-source escrow platform.
Initial build plus scaling controls
A FastAPI and React tool for receiving callbacks, checking signatures, replaying events, and seeing what happened without digging through scattered logs.
Initial build plus scaling controls
A real-time object detection dashboard with a YOLO-ready detector interface, WebSocket streaming, live overlays, and a backpressure loop that stops the UI from lying.
Initial build plus scaling controls
Building a RAG demo as a product problem: ingestion, chunking, retrieval, citations, bounded storage, and a mock answer path that reviewers can run without API keys.
Initial build plus scaling controls
An interactive robotics planning sandbox for comparing A*, Dijkstra, and an RRT-style planner with visible tradeoffs instead of a black-box animation.
Beta 1.1 refactor and architecture hardening
What I learned turning AI chat into a commerce workflow with tenants, handoff, payments, and enough guardrails to be useful in the real world.
Admin security and RBAC
Tightening admin security, role assignment, and operational permissions before the fintech platform moved deeper into launch work.
Initial monorepo platform scope
The first XcroPay repo snapshot: public web, mobile, admin, API, shared schemas, migrations, docs, integrations, and brand assets — platform-shaped from the start.
Campaign commerce and operations
A music, merch, ticketing, checkout, delivery, and door-operations build delivered through DZND.studio — what looks like a campaign site on the outside, and a small commerce operation underneath.
Static launch page and client deployment handoff
A token information site, swap guidance, owner/contact visibility, and correcting deployment ownership before production — because who owns the deploy matters.
Purchase flow regression hardening
Hardening purchase intent, stale orders, handoff behavior, payment interpretation, and building a regression suite after real conversation failure patterns showed up.
AI sales pipeline stabilization
Stabilizing the AI sales pipeline after context loss, stock disclosure, handoff, and model-choice problems showed up at the same time.
Instagram webhook delivery and OAuth repair
OAuth, Instagram business accounts, webhook subscriptions, message tags, and the difference between 'connected' and actually receiving events.
Mobile and tablet app foundation
Adding an Expo mobile and tablet app across auth, dashboard, admin, products, conversations, settings, and training surfaces — and why mobile changes the product contract.
Retention and resilience features
Tiered retention features, AI failover, queue APIs, and the move from chatbot demo toward SaaS operations.
Account security and deletion safety
Strengthening account protection and data deletion behavior before the product got more operational surface area.
Payment gateway integration
Payment-gateway work, frontend checkout changes, and the first big step from messaging automation to commerce automation.
Meta setup and webhook foundation
The first webhook and Meta setup phase — before later OAuth and delivery debugging made the integration more durable.
Early beta product snapshot
The earliest useful Sellavie commit: backend and frontend changing together, already pushing toward business workflow rather than chatbot demo.