Custom software · Buenos Aires, Argentina
Custom software engineering.
Management systems, automations, bots and web apps for Argentine businesses. We build it, ship it to production, and stay on when something needs fixing.
- systems in production
- 9
- systems in production
- in-house products
- 3
- in-house products
What we do
Six fronts, one standard.
We don't sell hours: we ship working software. Most projects combine two or three of these.
Process automation
Everything someone does by hand today: entering data twice, building reports, sending alerts, moving files between systems. We automate it and it runs on its own.
Bots and AI assistants
WhatsApp bots that handle inquiries, book appointments and answer with your business's real data. Assistants that search, summarize and classify for you.
Management systems and ERPs
Cash flow, stock, customers, production and reports in one place. The system adapts to how you actually work, not the other way around.
Desktop applications
Software that runs on the store's PC: fast at the counter, with barcode scanning, thermal printing and network operation.
Web apps and websites
Web platforms, customer portals, e-commerce and fast, well-ranked landing pages that turn visits into inquiries.
Integrations
We connect what you already use: WhatsApp, Mercado Pago, e-invoicing, spreadsheets, third-party APIs. So your systems talk to each other.
How we work
A short process, with visible progress.
Discovery
We listen to how your business runs today: what's still on paper, what gets done twice, where money leaks out.
Proposal
Scope, price and timeline in writing. No fine print: you know what you're getting and when, before we start.
Iterative development
You see working progress every week. We adjust based on real software, not mockups.
Launch and support
We migrate your data, train your team, and stay reachable on WhatsApp whenever something breaks or you want to add something.
Projects
Real systems, in real businesses.
Three of nine. Fabbrica and Bookear are our own products; Narella has been used daily since 2025.
Clients
They already trust us.
"We used to coordinate everything over WhatsApp, and by month-end nobody was quite sure how much to pay each stylist. Now the schedule, cash register and commissions all live in one place, and the tax filings we used to do by hand now generate themselves. It changed how the whole salon works."
Narella
Owner of Narella Centro de Estética
"What stands out most are the automatic WhatsApp reminders: no-shows dropped a lot, which used to be our biggest headache. The schedule is crystal clear by day and by week, and closing the register at the end of the day takes seconds."
Luciana Progono
Owner of Eterea Nails
"We've been selling auto parts in the neighborhood for over 50 years and were still invoicing like it was the 2000s. Siderna built us a point of sale that handles ARCA e-invoicing, takes Mercado Pago payments and tracks stock in real time, and the website brings us new customers every week through WhatsApp."
Adrián
Owner of La Fiat de San Justo
"We needed something that actually understood how a real factory works, not a spreadsheet calling itself an ERP. They modeled our production orders, formulas and distribution exactly the way we run them on the floor. I can't imagine running Probac without that system today."
Sebastián
Probac Packaging
"We're a chemical company and needed fine-grained stock control, running accounts and error-free e-invoicing. Siderna's team understood the business quickly and delivered a clean, stable system that adapts whenever we change something in our process."
Ivana
Pol Química
"We used to sell through Instagram and an Excel sheet, and orders and stock got mixed up constantly. With the online store they built us, the customer sees the catalog, pays, and we see everything organized on our end. We've doubled our weekly orders since launching it."
Pasión Matera
Mate gourds and accessories business
Stack
What we build it with.
Nothing experimental in production, and nothing so old you can't find anyone to maintain it later. If we ever stop working together, another team can pick it up.
Frequently asked questions
What everyone asks before starting.
How much does a project cost?
It depends on scope: a specific automation or a landing page starts well below a full management system. After the first call we send a written proposal with a fixed price and timeline, no surprises halfway through. And if one of our products (Fabbrica or Bookear) already covers your need, a subscription costs a fraction of custom development.
How long does it take?
An automation or a bot: 1 to 3 weeks. A website or landing page: 2 to 4 weeks. A typical management system: 2 to 4 months, with partial deliveries you can already use. From the first week you see working software, not diagrams.
What can actually be automated?
Almost anything repetitive: copying data from a spreadsheet into a system, generating and sending reports, sending a WhatsApp alert when something happens, moving files, tracking minimum stock, answering common questions. The practical rule: if someone on your team does it every day following the same steps, it can be automated.
Does it integrate with what I already use?
Yes, that's part of the job. We connect WhatsApp, Mercado Pago, e-invoicing, Google Sheets, accounting systems and third-party APIs. If your current tool works well, we don't replace it: we integrate it.
What happens after delivery?
We migrate your data, train your team, and stay available on WhatsApp. Systems evolve with the business: most of our clients call us back for phase two.
Do you only work in Buenos Aires?
No. We're based in Buenos Aires but work remotely across the whole country. Systems are delivered, trained on and supported remotely without issues.
Can I start with something small?
Yes, and we recommend it. We start with whatever hurts most — one automation, one module, one bot — and the system grows from there. A small thing in use beats a huge thing in a slide deck.
Contact
Tell us what's wasting your time.
Fill out the form and we'll get back to you with something concrete: what can be automated or built, what it would cost and how long it would take. No commitment, no fluff.
- Same-day response, Monday to Saturday
- Written proposal with a fixed price
- You talk to whoever writes the code, not a salesperson
hola@siderna.site · WhatsApp +54 9 11 4164-8708