Software engineer · Product builder

Lucas Fasolato.

I build software,products & systems.

Full-stack engineer focused on backend systems.

AI-native development. Products built for real-world impact.

Currently buildingCirculAR

Selected work · 01—03

Three products. Built end to end.

A focused look at the products that best represent how I think about engineering, product and delivery.

01SPORTS INFRASTRUCTURE

PadelPoint.

From booking a court to building a competitive community.

A connected platform for players and clubs: reservations, matches, rankings, leagues and operations designed as one product system.

NestJSNext.jsPostgreSQLRailway
Open live
PadelPoint live product screenshot
point-arg.vercel.app

LIVE PRODUCT

PadelPoint

Explore product tour
01 / 03Scroll for next project
02SOCIAL FASHION PRODUCT

CirculAR.

Discovery, identity and circular fashion in one social experience.

A dark social-fashion marketplace built around discovery, closets, matching, offers and AI-assisted publishing flows.

Next.jsTypeScriptPostgreSQLAI
Open live
CirculAR live product screenshot
circularg.vercel.app

LIVE PRODUCT

CirculAR

Explore product tour
02 / 03Scroll for next project
03MULTI-TENANT COMMERCE

Volta Store.

A configurable storefront that turns WhatsApp into checkout.

A multi-tenant commerce platform with isolated stores, dynamic branding, catalog management and a lightweight WhatsApp purchase flow.

Next.jsSupabaseRLSZustand
Open live
Volta Store live product screenshot
volta-store-template.vercel.app

LIVE PRODUCT

Volta Store

Explore product tour
03 / 03Selected work complete

03 / SYSTEMS · LABS

The systems behind the products.

I use AI, automation and repo-native workflows as part of the engineering system — not as a shortcut around engineering.

01AI / ENGINEERING

Harness.

A repo-native operating system for coding agents: scoped context, task-specific skills, deterministic preflight, quality gates and durable handoffs. The goal is simple — make AI-assisted delivery repeatable and reviewable.

AGENTS.MDSKILLSPREFLIGHTQUALITY GATESHANDOFFS
SYSTEM ARCHITECTURE

CONTEXT

repo rules + release state

AGENT

task-specific skills

BUILD

scoped implementation

QUALITY

deterministic gates

SHIP

validated handoff

context → deliveryrepeatable by design
02AI / AUTOMATION

Digital Product Factory.

An auditable research-to-product pipeline that separates evidence from interpretation, versions product context and offers, turns them into blueprints, and prepares generation for explicit QA instead of one-shot prompting.

RESEARCHEVIDENCEOFFERSBLUEPRINTSGENERATIONQA
SYSTEM ARCHITECTURE

RESEARCH

discovery + evidence

OFFER

versioned product context

BLUEPRINT

structured deliverables

GENERATE

provider-driven content

QA

claims + consistency

evidence → productrepeatable by design

04 / HOW I BUILD

Product thinking. Engineering discipline.

The stack changes. The operating principles should not.

01

Engineering

Start from the system, not the screen.

Business rules, contracts, data and failure modes come first. UI should sit on top of a system that can explain itself.

02

Product

Useful beats impressive.

I care about the path from intent to outcome: what the user is trying to do, what gets in the way and what the software should remove.

03

AI-native

AI belongs inside the workflow.

Agents, skills and automation are most valuable when they inherit context, respect constraints and pass the same quality gates as any other change.

04

Delivery

Build. Validate. Ship. Learn.

Small feedback loops beat long speculative cycles. I prefer observable increments, explicit validation and a clear handoff to the next decision.

Systems should be understandable, testable and useful before they are clever.

ROSARIO · ARGENTINA · 2026

05 / ABOUT

I turn complex problems into software people can actually use.

Software engineer based in Rosario, Argentina. My background crosses electronics, programming and systems engineering, which shaped how I approach products: understand the system, simplify the path and ship something real.

Backend-first by instinct.

Product-minded by necessity.

AI-native by practice.

Download resume
01

Electronics

A technical foundation for understanding systems from the physical layer up.

02

Programming

Turning that systems mindset into software, automation and backend engineering.

03

Systems Engineering

Connecting architecture, product decisions and delivery into one way of working.

06 / NOW · AUG 2026

What I'm building right now.

A small snapshot of the products, systems and ideas getting most of my attention today.

BUILDING

CirculAR

Closing the loop from discovery to closets, matching, offers and exchange.

IMPROVING

PadelPoint

Deepening match flows, competitive systems and the player-to-club product experience.

EXPERIMENTING

Digital Product Factory

Research, evidence, offers, blueprints, generation and explicit QA as one auditable pipeline.

EXPLORING

AI-native engineering

Repo context, agents, skills, deterministic checks and repeatable delivery workflows.

07 / NOTES

I'm not publishing filler.

This section is ready for the posts I publish next. For now, it shows the ideas I want to write about without pretending drafts are published work.

01AI-NATIVE ENGINEERING

What changes when agents inherit repo context instead of just prompts.

Context, skills, quality gates and handoffs are the part I want to write about first.

IN DRAFT
02PRODUCT SYSTEMS

Why the last 10% of a flow matters more than another feature.

States, failures, feedback and handoffs are where a product starts feeling complete.

IN DRAFT
03DELIVERY

What shipping multiple real products teaches you about architecture.

The architecture that matters is the one that keeps the next change understandable and safe to ship.

IN DRAFT