ESEN Clients Let's talk

Software studio · Buenos Aires

We design and build AI-native digital products.

For companies that can't wait months.

Web, mobile, SaaS and AI agents. From prototype to production in weeks, built to the quality bar large companies expect.

Let's talk about your project See our work
  • Prototypes in days
  • AI across the whole process
  • US-friendly time zones

Services

Everything it takes to launch and scale a product.

One team for design, engineering, AI and infrastructure. No hand-offs between vendors.

  • End-to-end web and mobile apps: from idea to app store and your own domain.

    • Next.js & React
    • iOS & Android
    • PWA
    • Accessibility & SEO

  • Multi-tenant platforms with accounts, roles, plans and recurring billing, ready to grow.

    • Multi-tenancy & roles
    • Subscriptions in USD & ARS
    • Admin dashboards
    • Public APIs

  • Assistants that work on your data and processes: they answer, enter, classify and act, with human confirmation where it matters.

    • In-product copilots
    • Process automation
    • Document search (RAG)
    • Cost & quality control

  • We make your product work inside ChatGPT and Claude: your customers ask their AI, and your system answers.

    • MCP tool design
    • OAuth authentication
    • Permissions & rate limits
    • Publishing & docs

  • We connect your product to what you already use: payments, invoicing, e-commerce and ERPs.

    • Payment gateways
    • Argentine e-invoicing (ARCA)
    • E-commerce & marketplaces
    • ERPs & custom APIs

  • Research, flows, prototypes and design systems so the product explains itself.

    • Discovery & research
    • Clickable prototypes
    • Design systems
    • Web & mobile UI

  • We move legacy systems to a modern architecture without stopping the business.

    • Cloud migration
    • Refactoring & new APIs
    • Data migration
    • CI/CD & observability

Work

Real products, in production.

Before building for others, we build for ourselves. These are the studio's own products, with real domains, users and stacks.

In production idlab.com.ar (Visit Shopia)

Shopia

Retail · RFID + AI

Problem
Clothing stores rarely know exactly what stock they hold or how each branch performs, and manual stock counts are slow and error-prone.
What we built
A retail management system built on RFID tags: radio-frequency stock counts, checkout, multi-branch inventory and an AI assistant that answers questions about the business.
Stack
  • NestJS
  • Next.js
  • Java
  • PostgreSQL
  • AWS IoT Core
  • DynamoDB
  • CopilotKit
In production sellalog.com (Visit Sellalog)

Sellalog

SaaS · B2B wholesale

Problem
Wholesalers sell through PDFs, spreadsheets and scattered messages: buyers don't browse the collection and sellers never learn what caught their eye.
What we built
A swipeable mobile catalog: buyers mark what they like and send the order over WhatsApp, and the seller sees what each buyer viewed, picked and skipped.
Stack
  • React
  • Vite
  • Express
  • Prisma
  • PostgreSQL
  • OpenAI
In production kambak.app (Visit Kambak)

Kambak

SaaS · Loyalty

Problem
Paper stamp cards get lost, and almost nobody downloads an app just to collect points at one shop.
What we built
Stamp cards, points, memberships and gift cards that live in Apple Wallet or Google Wallet. Customers add them with a QR code or NFC tap, nothing to install, and the business sends reminders to their lock screen.
Stack
  • Next.js
  • Fastify
  • Drizzle
  • PostgreSQL
  • Apple & Google Wallet
  • Mercado Pago
In production arcakit.jj.ar (Visit ArcaKit)

ArcaKit

API · E-invoicing

Problem
Integrating Argentina's ARCA e-invoicing web services means SOAP, certificates and XML: weeks of work for every team.
What we built
An API that handles certificates, authentication and XML: a single POST issues the invoice and returns the CAE, invoice number and fiscal QR code.
Stack
  • Next.js
  • TypeScript
  • Prisma
  • PostgreSQL
  • SOAP / XML
  • REST
In development modeleo.app

Modeleo

AI · Product photos

Problem
Shooting fashion photos with a studio and models every season is slow and expensive.
What we built
Product and on-model photos generated with AI from the garment itself, no studio needed.
Stack
  • Next.js
  • TypeScript
  • Generative AI
In development lupeo.app

Lupeo

Retail · Screens

Problem
In-store screens show the same thing forever because changing the content is a chore.
What we built
Content for in-store screens, scheduled and updated from a phone.
Stack
  • Next.js
  • TypeScript

How we work

From idea to production, without the months of waiting.

  1. 01

    Discovery

    We learn the business, the user and the metric that matters. We leave with scope, risks and a concrete plan.

  2. 02

    Prototype in days

    Something clickable to test with real users before committing to the full build.

  3. 03

    Iterative development

    Weekly releases to a staging environment, with demos, clear priorities and visible decisions.

  4. 04

    Launch & scale

    Deploy, monitoring and alerts. We measure what gets used, tune it and grow the product.

  • Speed through AI

    We use AI across design, code, tests and QA. The time we save goes into what users notice.

  • Enterprise-grade quality

    Automated tests, CI/CD, code review, security and accessibility from day one.

  • Clear communication

    One direct channel, weekly demos and visible progress. In English or Spanish, on your schedule.

Engagement models

Choose how to work with us.

  • Fixed-scope project

    Defined scope, timeline and budget. Ideal for an MVP, a redesign or a specific integration.

    • Fixed scope & price
    • Milestones with demos
    • You own the code & docs
    Ask us

  • Dedicated team

    Staff augmentation: we add engineers and designers to your team, on your stack and rituals.

    • Tailored profiles
    • Embedded in your team
    • Scale up or down
    Ask us

  • Product partner

    A monthly retainer for a team that owns your product: roadmap, development, improvements and support.

    • Monthly retainer
    • Shared roadmap
    • Continuous improvement & support
    Ask us

Stack & capabilities

Proven technology, chosen to last.

Frontend & mobile

  • Next.js
  • React
  • TypeScript
  • React Native
  • Tailwind CSS

Backend

  • Node.js
  • NestJS
  • Fastify
  • Java
  • REST APIs

Data

  • PostgreSQL
  • Prisma
  • Drizzle
  • DynamoDB

Cloud & DevOps

  • AWS
  • Docker
  • CI/CD
  • Cloudflare

AI

  • LLMs
  • Claude
  • OpenAI
  • MCP
  • Agents
  • RAG

Integrations

  • Mercado Pago
  • ARCA
  • E-commerce
  • ERPs
  • RFID / IoT

Why YAD

International quality, startup speed.

  • Days to weeks

    Prototypes in days and products in weeks. Anything that doesn't serve the user stays out of the plan.

  • AI in our DNA

    We don't bolt it on at the end: we design, build and test with AI, and put it to work inside your product.

  • Buenos Aires to the world

    Time zones that overlap with the US, work in English or Spanish, and meetings on your schedule.

  • Competitive cost

    International quality with a lean structure. You pay for product, not overhead.

Contact

Tell us what you want to build.

Fill in the brief and we'll get back to you within one business day with next steps. Prefer chat? Message us on WhatsApp.

Or reach us directly

+54 9 11 3602-0034 javier@idlab.com.ar