Engineer · Builder · Dungeon Master

Marco Concetto Rudilosso

Staff engineer at Shopify working on the Liquid VM, interested in high-leverage systems, local-commerce products, agent infrastructure, and ambitious ideas that are worth the complexity.

Shopify Liquid VM Ruby/Rails Rust & VMs D&D 5e Sicily / Italy

Current Focus

  • Liquid performance: compiling Liquid toward bytecode and reducing Ruby VM overhead.
  • IR design: exploring graph/SSA-style representations for batching and optimization.
  • Runtime architecture: Rust VMs, sandboxing, provenance-aware execution, and agent-safe systems.

Builder Taste

  • Pragmatic stacks: Rails, Hotwire, Postgres, pgvector, Kamal.
  • Simple products: sharp MVPs, not over-scoped platform theater.
  • Infra curiosity: Firecracker, LXD, SQLite-backed agents, cheap machines doing useful work.

Personal Context

  • Italy/Sicily: frequently thinks through local markets, energy, retail, and law.
  • Marzamemi: close ties to physical retail and local commerce.
  • Interests: Formula 1 trivia, watches, cars, energy, dating psychology, and practical style.

Ideas in Motion

Möbius

An AI-ranked e-commerce feed based on taste embeddings, recency, geo, weather, trend signals, and diversity.

Putia

A Sicily-first local fashion marketplace: “Zalando-like, but only local shops.”

Cortile

A tiny PaaS for uploading simple HTML apps with persistence, sync, and AI primitives on cheap hardware.

Model Subscription Layer

A simple OAuth-enabled credit subscription for using multiple AI models across third-party apps.

Operating Style

Direct Prefers concise answers, concrete specs, honest feedback, and less fluff.

Ambitious Likes risky, high-upside ideas when the technical path is real.

D&D Worlds

  • Goaheim / Eldervale: corrupted dragons, dark masters, the Purificatore, dream dimensions, and political betrayals.
  • Il Mondo Diviso e l’Ultimo Natale di Siracusa: scarcity, floating islands, refugees, moral tradeoffs, and Lady Orsina as a hidden divine architect.
  • DM preference: sandbox prep, read-alouds, NPC line banks, consequences, clocks, and zero lazy railroading.

One-Line Summary

A systems engineer and product-minded builder who likes turning weird, hard ideas into practical, shippable machines.