Software engineer · Buenos Aires

I make the complex simple.

@react@nextjs@gsap@typescript

Software engineer specialised in frontend. I take products from idea to production in very different industries, like banking, payments, real estate and sports, with modern, AI-powered technologies.

See the work ↓Get in touch

Selected work

Complex problems, clear interfaces.

Banking, sports predictions, real-estate investment, innovation, EU funding and payments. Six real products: open any card to read the case.

Get in touch

About

I'm José. An engineer by training, frontend by choice.

I care about the details people feel but rarely name:

01The timing of a transition.
02A layout that holds at every width.
03A page that loads before you blink.

6+years building products in production

UTNInformation Systems Engineer

EN · ESEnglish every day with European clients

Buenos AiresHybrid or on-site

CV ↗Full résumé, PDF

Selected work

Real products for decisions that matter.

Point

Mercado Libre

The checkout for Mercado Pago's card reader, from picking the device to the payment, in five countries.

ReactNode.jsSSRCheckout

FindFund

Synopp

Uses AI to find, among thousands of EU funding calls, the ones a European company can win, and explains why each one fits.

Next.js 16React QueryZustandnext-intl

Maturoscope

Synopp

A self-assessment that shows innovators in any sector how ready their solution is for market, ending in a downloadable report.

Next.js 15RadixRechartsi18next

Yield305

Litebox

Real-estate investment platform embedded in Salesforce: load a property and see whether it works as a fix-and-flip or a rental.

Next.js 14NestJSPostgreSQLAuth0

Splash

Litebox

White-label sports prediction and trivia games for betting operators: 10+ apps on one codebase, in 8 languages.

ReactReact NativeMongoDBAWS

Mobile banking

Banco de Corrientes

MásBanCo, a provincial bank's mobile app with biometric onboarding and payments, built in React Native side by side with design. 500,000+ downloads.

React NativeAdobe XDGenexus

Toolbox

Toolbox × agents

Your stack, already in my hands.powered by agents.

The ones I use every day. And if your project needs another, I’ll learn it.

Every tool lands with the agent that uses it. I set the task, they build, I review.

AI-native workflow

I ship with a team of agents. I stay the editor.

An AI coding agent runs as an orchestrator and hands work to specialised agents for UX, development and QA. Any provider works: Claude, GPT, Gemini, whatever fits the project. They share memory files, so context survives between sessions. I set the direction, review every diff and own what ships.

Any model works: Claude, GPT, Gemini. The process stays the same.

Context lives in files
Small diffs, human review
Quality is a role, not a phase

orchestrator

Dev

AGENTS.md · decisions.md

agents.log · example run

you → brief: "a dark-mode toggle with a fun transition"
orchestrator → plan: 3 tasks · context saved to memory
ux → circular reveal from the button, respects reduced motion
dev → View Transitions API + fallback · 48 lines
qa → ✓ AA contrast ✓ keyboard ✓ no layout shift
you → diff reviewed · merged ✓
ops → pipeline → Argo CD sync · live in prod ✓

Under the surface

Every pixel has a reason.

What someone using FindFund sees.

What makes it work: data, session, URL state and the AI agent that scores each call.

↔ Scroll or drag the curtain

<Sidebar/> client

FFindFund◔

HomeAnalysesValue propositionsFavouritesCompany profileInvoices

// Sidebar.tsx
const t =
  useTranslations('nav');

return NAV_ITEMS.map((item) => (
  <NavLink {...item}
    key={item.href}
    label={t(item.key)} />
));

José C.Admin · Calvano & Commits

// middleware.ts · Clerk
export default authMiddleware({
  publicRoutes: PUBLIC_ROUTES,
});

Sunday · 25 Oct

Hey José, 3 calls fit you today.

<CreditsCard/> client

Your credits

0Analyses left

3Value propositions

// hooks/useCredits.ts
export const useCredits = (orgId: string) =>
  useQuery({
    queryKey: creditKeys.byOrg(orgId),
    queryFn: () => creditsApi.get(orgId),
  });

Analyse an open call anytimeBuy single report

// optimistic: the UI updates before the server confirms
onMutate: () => credits.increment(1),
onError: (_err, _vars, snapshot) => credits.restore(snapshot),

<OrgCard/> client

Your organisation

⌘Calvano & Commits

SME · Buenos Aires · est. 2 a.m.Manage

// types/organisation.ts
export interface Organisation {
  id: string;
  name: string;
  size: 'STARTUP' | 'SME' | 'LARGE';
  plan: Plan;
}

<AnalysesList/> client

Recent analyses

Europe fundingInterreg funding

// tabs live in the URL: shareable, back-button safe
const [tab, setTab] = useSearchParam('programme');

5 September 2026

Up to 97% match

// services/matching.ts
const candidates = prefilter(calls, profile);
const ranked = await agent.rank(profile, candidates);
return ranked.filter((m) => m.score >= MIN_SCORE);

5 September 2026

Up to 62% matchClosed call

// domain/call.ts · derived, never stored
export const isClosed = (call: Call, now = Date.now()) =>
  call.deadline.getTime() < now;

+ New analysis

// poll while the analysis runs, stop when it's done
useQuery({
  ...analysisQuery(id),
  refetchInterval: (q) => isRunning(q.state.data) && 4_000,
});

<ValueProps/> client

Value propositions

HORIZON EUROPENo days left

Energy performance of smart buildings

HORIZON-CL5-2026-09-D4-01

HORIZON EUROPE115 days left

Valorising Horizon results via innovation ecosystems

HORIZON-BRIDGING-2027-06-02

<Sidebar/> client

FFindFund◔

HomeAnalysesValue propositionsFavouritesCompany profileInvoices

// Sidebar.tsx
const t =
  useTranslations('nav');

return NAV_ITEMS.map((item) => (
  <NavLink {...item}
    key={item.href}
    label={t(item.key)} />
));

José C.Admin · Calvano & Commits

// middleware.ts · Clerk
export default authMiddleware({
  publicRoutes: PUBLIC_ROUTES,
});

Sunday · 25 Oct

Hey José, 3 calls fit you today.

<CreditsCard/> client

Your credits

0Analyses left

3Value propositions

// hooks/useCredits.ts
export const useCredits = (orgId: string) =>
  useQuery({
    queryKey: creditKeys.byOrg(orgId),
    queryFn: () => creditsApi.get(orgId),
  });

Analyse an open call anytimeBuy single report

// optimistic: the UI updates before the server confirms
onMutate: () => credits.increment(1),
onError: (_err, _vars, snapshot) => credits.restore(snapshot),

<OrgCard/> client

Your organisation

⌘Calvano & Commits

SME · Buenos Aires · est. 2 a.m.Manage

// types/organisation.ts
export interface Organisation {
  id: string;
  name: string;
  size: 'STARTUP' | 'SME' | 'LARGE';
  plan: Plan;
}

<AnalysesList/> client

Recent analyses

Europe fundingInterreg funding

// tabs live in the URL: shareable, back-button safe
const [tab, setTab] = useSearchParam('programme');

5 September 2026

Up to 97% match

// services/matching.ts
const candidates = prefilter(calls, profile);
const ranked = await agent.rank(profile, candidates);
return ranked.filter((m) => m.score >= MIN_SCORE);

5 September 2026

Up to 62% matchClosed call

// domain/call.ts · derived, never stored
export const isClosed = (call: Call, now = Date.now()) =>
  call.deadline.getTime() < now;

+ New analysis

// poll while the analysis runs, stop when it's done
useQuery({
  ...analysisQuery(id),
  refetchInterval: (q) => isRunning(q.state.data) && 4_000,
});

<ValueProps/> client

Value propositions

HORIZON EUROPENo days left

Energy performance of smart buildings

HORIZON-CL5-2026-09-D4-01

HORIZON EUROPE115 days left

Valorising Horizon results via innovation ecosystems

HORIZON-BRIDGING-2027-06-02

// utils/date.ts
const DAY_MS = 86_400_000;

export const daysUntil = (date: Date) =>
  Math.ceil(
    (date.getTime() - Date.now()) / DAY_MS,
  ); // live → 115

the light sidethe dark side

Experience

Every job left a mark.

A bank, a product studio, the consultancy I co-founded and now Mercado Libre. Each one shaped how I build.

Now

Mercado Libre

Software engineer · Buenos Aires

I'm on the Point checkout team: the server-rendered flow where businesses buy Mercado Pago's card reader, from picking the device to confirming the payment, in five Latin American countries, working closely with the backend team.

React
Node.js
SSR
Redis
Datadog

Ongoing

Synopp

Co-founder & tech lead · Paris / Buenos Aires

Technology consultancy for European clients, with products of our own. I lead architecture, estimates and delivery: FindFund, our AI search for EU funding, and Maturoscope, whose GitOps delivery to Kubernetes I built.

Next.js
NestJS
AI agents
Docker
Kubernetes
Argo CD

2022 – 2025

Litebox

Software engineer · Remote

Product studio, building for international clients. First Splash, a white-label sports prediction and trivia platform for betting operators, in React and React Native. Then Yield305, a real-estate investment platform embedded in Salesforce, in Next.js 14 and NestJS, that turns a property's details into its projected ROI, as a fix-and-flip or a rental.

Next.js 14
React Native
MongoDB
AWS
Jest

2020 – 2022

Banco de Corrientes

Frontend developer · Corrientes

MásBanCo, the bank's mobile app, in React Native and side by side with design in Adobe XD. I integrated biometric onboarding, identity checks and payments with the banking core. More than 500,000 downloads.