About Stefano
Senior full-stack engineer with 6+ years shipping production web apps end to end — Next.js/React on the front, Node/TypeScript and PostgreSQL behind them. I own the whole path: API and data design, the services in the middle, and the UI that consumes them.
Most of my recent work is real-time, data-heavy product engineering — payments and funding platforms running in production for multiple organizations. I'm the person who takes something from architecture to launch, leads a small team, and keeps the layers cleanly integrated so the product and its backend move together.
What I bring:
• Performance — cut UI-thread blocking ~95% with WebAssembly; trimmed first-load bundles ~35%.
• Security — secure access control, static analysis in CI, resolving third-party audit findings.
• Tests that reflect real behavior, run against production-like state.
• Fast delivery with agentic AI coding tools, without trading away quality.
Available for remote full-stack contracts (EU time zones). Strongest on real-time, data-heavy, and fintech-flavored products where one engineer owns it from database to screen.
Italian
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- Octant (Golem Foundation)Senior Software Engineer — ContractJanuary 2025 - January 2026 (1 year)• Shipped a real-time payments and funding platform end to end as top contributor across backend, frontend, and core distribution logic — automated payouts streamed over a 90-day schedule and weighted by a quadratic-voting mechanism.• Primary author of the TypeScript backend: Express APIs, PostgreSQL with Prisma/Kysely, pg-boss job queues, Zod/OpenAPI schemas, and role-based access control.• Built and tested money-movement logic against a fork-of-production test suite; integrated static analysis into CI and resolved findings from a third-party security audit.• Prototyped privacy-preserving vote aggregation with zero-knowledge circuits (Circom/snarkjs), proving correct tallies without revealing individual inputs.
- Flow State CoopTech LeadMay 2024 - Today (2 years and 3 months)• Led engineering and was primary author of the flagship codebase (361 of ~443 commits) — a Next.js/TypeScript app with authentication, GraphQL, PostgreSQL, and real-time streaming payments.• Designed and shipped a funding-distribution product (React + a custom indexer) and ran a pilot round that distributed a $100K+ matching pool, with ~1,000 participants voting to direct the funds.• Built Flow Splitters: a real-time payment-stream distribution product deployed across multiple environments and adopted by multiple organizations in production.• Engineered the supporting data layer — a TypeScript indexer (Chainsauce + PostGraphile + PostgreSQL) exposing a GraphQL API consumed by multiple frontends.
- Geo WebFull-Stack DeveloperJanuary 2022 - January 2024 (2 years)• Lead frontend engineer and #2 contributor (~119 merged PRs) on a TypeScript/React web app for a partial common-ownership land market; also contributed backend and on-chain work.• Cut UI-thread blocking time ~95% on geospatial grid rendering by rewriting hot-path loops in WebAssembly and moving polygon construction out of the render loop, reaching 60+ FPS; eliminated a double-render bug.• Reduced first-load JavaScript bundle size ~35% via code-splitting and lazy loading.• Built frictionless onboarding with gasless, batched transactions (~7K LOC), and hardened the data layer (memoized GraphQL client, batched multi-step requests, multi-gateway fallback).
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