I build custom management systems for small businesses.

Nicolás Yusta

I’m Nicolás Yusta, a full-stack developer. Four systems in production, two paying clients, both came back.

Buenos Aires, UTC−3: I overlap the full US business day.

Email meny@yustalabs.comRead my resume

Five systems in production

Four run client businesses and the fifth runs mine. Each case has the problem, the decisions, the real screens with made-up data, and one number.

A business client’s account in the SLE Mensajería panel: how each month closed and its deliveries

1,656 deliveries tracked

SLE Mensajería courier company, Buenos Aires

Deliveries, courier settlements and client accounts for a courier company, in one panel.

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The MATIAL system: the workshop dashboard, a work order and a quote

A second contract, 72 days later

MATIAL road-signage workshop, Buenos Aires

Numbered quotes, delivery notes and staged work orders for a vehicle workshop.

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The Oro Gym app on a phone: members, due dates and the day’s cash

232 members, run from a phone

Oro Gym gym, Buenos Aires

Members, dues and payments for a gym, taken from a phone behind the counter.

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A client file in the lender’s panel: six loans, what is owed and how each one was paid

13,052 payments recorded

Daily-installment lender small loans, Mendoza

The day’s collections and each client’s reliability, in one panel for a lender that collects in person.

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The Yusta HQ floor map, with the agents at work

17 agents, eleven on a fixed schedule

Yusta HQ internal system, Buenos Aires

Seventeen agents, eleven shifts at fixed times and a watchdog.

Read the case

How I work, from the first email to the handover

  1. 01

    A conversation · 30 minutes

    I listen

    By email, WhatsApp or video call. You tell me how the business runs and where it gets stuck. If we are a fit, the quote arrives within 24 hours.

  2. 02

    Design · 1 to 2 weeks

    A clickable mockup

    You open it, click through it and approve it before I write a line of code.

  3. 03

    Build · 2 to 6 weeks

    Progress every week

    You see the real system grow, and the changes that come up along the way go in as we go.

  4. 04

    Handover · in your name

    Repository and keys

    The code, the domain and the database are registered in your accounts. Then come the days for adjustments: 30 on the smallest build, 90 on the two largest.

I use AI tools to write code faster. I check the code myself, and it stays in your name.

What it costs

From USD 1,000

Management systems

The smallest is Oro Gym’s: members, dues and payments.

From USD 1,500 + USD 120 a month

WhatsApp that answers

It answers the usual questions and hands the rest to you. Meta bills the messages separately.

From USD 500

Websites

A page that loads fast and sends inquiries to your WhatsApp.

Systems and websites are paid once: the price is agreed before I start, and there is no subscription after. Every tier includes one to three months of maintenance, and staying on a plan after that is optional. The repository, the domain and the database stay in accounts in your name.

See the prices

Work with me

If you run a business

I build a system around the way your business already works: sales, stock, collections and clients in one place, on the office computer and on your phone. You pay for it once, and the code and the database stay in your accounts. I quote within 24 hours, and the language of the interface is part of every build.

See the systems and what they cost

If you are hiring

I’m open to a remote full-time role or a long contract. I have taken four systems from the first conversation to production on my own: data model, security rules, front end, tests, deployment and the integrations with Anthropic and Gemini models that run my own company.

Read my resume

Write to me about a system or a role

I answer every email myself, from Buenos Aires.

Email meny@yustalabs.com

WhatsApp: +54 9 11 2469-3394