guilhermeproenca
> starting customer service ok
> starting finance ok
> starting reports ok
guilhermeproenca
Estimate my project

Your company, with a digital team working around the clock.

Custom software, websites and AI agents that work for your business. Built to fit and maintained every month by the person who built them.

  • Software, websites and AI in one place
  • You test before paying the rest
  • Built by someone running a real business
+1New qualified leadby the AI agent, at 2:47 am
Pix matched and closedAutomated collections
Monthly report readyManagement dashboard
Digital officesimulation
6 team members working now
Digital receptionistShift: 24 hours
Replied to a customer at 2:47 am Confirmed tomorrow’s visit Handed a hot lead to the team
Digital finance clerkShift: 24 hours
Sent the payment reminder Matched a Pix payment and closed it Notified an overdue customer
Document assistantShift: 24 hours
Generated a client proposal Filled in and sent a contract Built the monthly report
Data analystShift: 24 hours
Updated today’s dashboard Closed this week’s numbers Flagged overdue accounts
Online storefrontShift: 24 hours
Got a lead from the website Showed the catalog to a visitor Sent the order to WhatsApp
Company systemShift: 24 hours
Logged a new sale Created a work order Granted a client portal access
On-call tech: backup done, everything online.Nobody needs to be in the office.
Built for Clinics and practices Professional offices Real estate agencies Technical services Pet shops Local retail

Solutions

Custom software, websites and AI for your operation. Pick a solution or estimate your project.

Software development

Custom systems and portals for your operation: what spreadsheets and off-the-shelf tools cannot do.

FromR$ 1,490/mo

Custom web system

An internal platform with logins, screens and rules built around how your company works.

  • Screens, permissions and business rules
  • Delivered in stages you test
  • Daily backups and documentation
Setup defined in the project I want this
FromR$ 590/mo

Client portal

A logged-in area where your clients see invoices, orders, documents and status without calling you.

  • Login on desktop and mobile
  • Invoices, orders and documents in one place
  • Data from the system you already use
Setup defined in the project I want this

Websites

Fast sites with custom design, built to turn visits into WhatsApp conversations.

InvestmentR$ 1,250

Landing page

One page to sell a service or capture leads, built for ads and Google.

  • Custom design, no off-the-shelf template
  • Form wired to your WhatsApp
  • Fast and mobile-ready
One-time payment I want this
InvestmentR$ 2,399

Company website

Your company website with home, about, services and contact, ready for Google.

  • Up to 5 pages
  • 3 months of maintenance and edits included
  • WhatsApp button on every page
One-time payment I want this
Setup + monthlyR$ 1,990 + R$ 197/mo

Catalog storefront

Your products with photo, price and ordering via WhatsApp. Ideal for pet shops and local retail.

  • Products organized by category
  • Order on WhatsApp in one tap
  • Product updates every month
Setup + monthly I want this

AI and automation

AI agents and automations that answer, collect and prepare documents on their own.

FromR$ 1,290/mo

AI agent on WhatsApp

An agent trained on your company’s information, answering on WhatsApp at any hour.

  • Answers questions from your content
  • Qualifies leads before your team
  • Hands off to a person with a summary
Up to 2,000 replies a month · setup in the project I want this
FromR$ 790/mo

Automated collections

Reminds, collects and checks payments on its own, following the schedule you set.

  • Reminders before and after the due date
  • Automatic reconciliation when payment arrives
  • Overdue accounts report
Setup defined in the project I want this
FromR$ 290/mo

Automated documents

Proposals, contracts and reports generated from your data, ready to send.

  • Templates with your branding
  • Data filled in automatically
  • Sent by email or WhatsApp
Setup defined in the project I want this

Data and management

The numbers that matter, updated on their own and available anywhere.

FromR$ 590/mo

Management dashboard

Your company’s numbers updated on their own, in a dashboard on desktop or mobile.

  • Up to 6 indicators
  • 1 data source connected
  • Login access for your team
Setup defined in the project I want this

Starting prices in Brazilian reais. Setup for monthly services is defined in the project, after the free assessment. The monthly fee covers monitoring and fixes. Hosting and official WhatsApp API fees are paid directly by the client.

Estimate your project

Takes about 2 minutes. The estimate on the side builds itself as you answer.

  1. Goal
  2. Business
  3. Size
  4. Timing
  5. Contact

What do you want to solve?

Pick as many as you like

Straight answers to the questions buyers ask

Is this expensive? Starting prices are published and the proposal comes with a fixed price in writing. You pay half to start and half on delivery.
What if the freelancer disappears? Code, credentials and servers stay in your company’s name, with documentation. The monthly plan keeps everything monitored. [confirm policy]
I have been burned by a vendor before. Each stage is delivered for you to test before the final payment, and you get 30 days of free adjustments after delivery.
Guilherme Proenca
Guilherme ProencaFull-stack developer and operations manager

I use what I sell every single day

Since 2022 I have run the administration of a fiber internet provider in São Paulo. There I built the systems that run the operation: automated collections, leadership reports and integrations with the management system, the bank and WhatsApp. I study Computer Science at Unasp.

You talk directly to me, from the first call to delivery.

[60-second video: introduction and the digital office running]

Digital teams at work

Real projects, in use. Company names stay private.

In production

Internal platform for a fiber ISP

Connects the management system, network monitoring and the bank: sales and installs, coverage by address, automated collections and leadership reports.

TypeScript, Bun, PostgreSQL, Railway
Available

Subscriber portal

Invoices, Pix QR codes, barcodes and bank slips without calling support. The portal never calculates money: it only shows what billing generated.

TypeScript, Pix, ERP API, PWA
Delivered

[Freelance project: type of business]

[What was delivered and the result in one sentence.]

[Technologies]

Common questions

Yes. Custom web systems and portals with your operation’s screens and rules, delivered in stages for you to test.

Let’s get your project off the ground.

A free 30-minute assessment. You leave knowing the right solution, the timeline and the investment.

Message on WhatsApp [number]Run the estimate and the message is ready to send. [email protected]