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Software engineering · Serving all of Brazil

Websites, apps and systems.
Made for your business.

I’m Marcelino, a software engineer and hardware and infrastructure specialist. I build websites, apps and systems, and provide consulting to help you choose and improve the technology your business needs.

See your idea come to life
Custom softwareHardware & infrastructureTechnology consulting
Photo of Marcelino Gustavo

From the first idea to a working application.

Marcelino GustavoSoftware engineer
From infrastructure to opportunity

Connect your business.
Expand your reach.

Skip animation
→→

A network cable connects the server. The website comes online. A globe illustrates the opportunity to reach new audiences.

01 / 03

It starts with a connection.

Behind a simple experience, there is a foundation connecting your website, systems and customers.

02 / 03

Your business, online.

A fast, clear website gives your brand a place where people can discover your work and take the next step.

03 / 03

Your next customer can be further away.

The internet opens new paths. Present your services, connect with more people and create room for your business to grow.

Connecting the infrastructure

Illustration of a digital connection. Locations do not represent customer data.

Take my business further
Selected work

See what your next project could become.

Different businesses, different needs. Explore the interfaces and the work behind each project.

HL TechSee full screenshot

HL Tech

Websites

A clear presentation of the company, its digital solutions and contact channels.

What was delivered

SolutionInstitutional presence with organized services and B2B communication.

RoleStrategy, content, frontend, and deployment.

Visit website
Anthony Acioly NutriSee full screenshot

Anthony Acioly Nutri

Websites

A professional website presenting nutritional services and making the first contact easier.

What was delivered

SolutionResponsive website with a clear narrative, service sections, and direct contact calls.

RoleUI, frontend, technical SEO, and publishing.

Visit website
Espaço SaúdeSee full screenshot

Espaço Saúde

Websites

The clinic’s services and information organized to help patients find their next step.

What was delivered

SolutionResponsive institutional website focused on clarity, services, and quick contact.

RoleFrontend, content, local SEO, and publishing.

Visit website
Japa DesignerSee full screenshot

Japa Designer

Websites

A visual portfolio that gives design work room to speak and makes services easy to find.

What was delivered

SolutionResponsive experience with a gallery, strong visual language, and conversion channels.

RoleFrontend, UI, and publishing.

Visit website
Home Server LabSee full screenshot

Home Server Lab

Internal project

An internal environment for testing applications, networks and deployment before delivery.

What was delivered

SolutionLab with Linux, Docker, Nginx, Cloudflare Tunnel, and environment segmentation.

RoleArchitecture, networking, servers, and operations.

A small experience. Many possibilities.

Try it.
See the parts connect.

A website welcomes a customer. A system organizes the request. An automation connects the next steps. Choose a step and try it yourself.

Interactive demo
Your business
Made for your next idea

What would you like to create?

Your business / workspace

Request inbox

One place to follow each step.

  1. 1New
  2. 2In progress
  3. 3Completed
Example requestNew

A website for my business

Request DEMO-01

The same request, with a clear next step.

Your business / workflow

A connected operation

Run the flow and see the steps complete.

  1. Receive request
  2. Update dashboard
  3. Prepare response
Simulated notificationResponse ready

Your request is now organized and ready for the next step.

Ready to connect the steps.

Fictional example. Nothing is sent or saved.

Scroll to follow the experience

01

The first click becomes a request.

A clear interface helps people find what they need and take the next step. Choose an option and add a request to this example.

Try changing the service in the preview.
02

Your team knows what comes next.

The request appears in an organized space. Move it through the stages and see the state change, just as it would in a system built for your operation.

Start and complete the example request.
03

The information keeps moving.

Connected tools can update the operation and prepare a response. Run this simulated flow and watch each step happen.

A visual example of an automation in action.
I want something like this
What can I help with?

Start with what your business needs.

Choose a goal to see how it can become a project.

Not sure where to start? Build your project

A website that helps people understand your value.

Organize your services, show your work and make it easy for a potential customer to start a conversation.

What we can build
  • Company websites and landing pages
  • Clear content and navigation
  • Contact paths that work on mobile

See examples in the projects above

Bring the information and tasks together.

A system built for the way your team works, with dashboards, accounts and flows organized around your business.

What we can build
  • Management dashboards and private areas
  • User access and permissions
  • Reports and operational workflows

Example: the Viral Tickets management panels

Put your service in your customers’ hands.

Create a mobile experience for customers or an operational tool for your team, connected to the services it needs.

What we can build
  • Android and iPhone applications
  • Customer and operational experiences
  • Connection to your platform’s API

Example: the three Viral Tickets apps

Help your systems work together.

Connect platforms and organize repeated tasks so your team can move information through a clear process.

What we can build
  • APIs and platform integrations
  • Payment and notification flows
  • Automation for repeated tasks

Example: purchase and ticket issuance flows

Make informed decisions about your technology.

Consulting to assess systems, hardware and infrastructure, identify priorities and plan the next steps for your business.

What we can build
  • Technical assessment and an action plan
  • Hardware selection, networks and servers
  • Environment setup, deployment and backup

Consulting can be hired as a separate service

Explore the technical services

Web Systems & SaaS

Dashboards, restricted areas, operational flows, and business rules for digital products.

  • Admin dashboards
  • Restricted areas
  • Operational flows

APIs & Integrations

REST APIs, webhooks, authentication, payments, automation, and organized data.

  • REST APIs
  • Webhooks
  • Authentication

Infrastructure & Deployment

Linux servers, Docker, Nginx or Apache, Cloudflare, SSL, logs, and backups.

  • Docker
  • Linux
  • Cloudflare
  • Logs and backups

Portfolio, Websites & Landing Pages

Digital presence, technical SEO, performance, and conversion for services and brands.

  • Institutional websites
  • Landing pages
  • Technical SEO

Apps, PWA & Mobile Operations

Operational apps, check-in, QR Code, Android, iOS, PWA, and WebView.

  • PWA
  • Operational apps
  • QR Code

Automation & Bots

Automated flows, customer service, and organized repetitive tasks.

  • Automation
  • Bots
  • Integrations

Technical Consulting

Diagnosis, architecture, stack selection, project review, and execution planning.

  • Diagnosis
  • Architecture
  • Execution plan
A starting point for your idea

Let’s shape
your next project.

Three simple choices help organize what you need. Review your summary and use it to start a conversation.

Your choices stay on this page until you decide to share them.

What kind of business is it?

Choose the closest match. We can work through the details together.

What would you like to improve?

Pick the main goal for this first conversation.

Where are you starting from?

You do not need a finished plan to get started.

How I work

Clarity at every stage.

You don’t need to have everything figured out. The first conversation helps turn your needs into a plan.

  1. 01

    Understand

    Learn about your business, the people using the solution and what needs to work better.

  2. 02

    Plan

    Define scope, priorities, deliverables and the technical structure the project needs.

  3. 03

    Build

    Develop interfaces and features, review the user flows and refine the details.

  4. 04

    Prepare delivery

    Organize deployment, access and usage guidance according to the agreed scope.

Scope, review points and delivery are agreed for each project. Hosting, maintenance and support have defined terms.

From the portfolio

What people say about the work.

We were very satisfied with the website. The clinic presentation became more professional, organized, and conveyed exactly the credibility we wanted for our patients.
Leila AmandaEspaço Saúde SDI
The website went beyond what I imagined. It combined aesthetics, professionalism, and clarity in presenting my services, which significantly strengthened my digital presence.
Anthony AciolyAnthony Acioly Nutri
The Viral Tickets structure brought a much more professional direction to the project. The separation between frontend, API, and operations made the platform stronger and ready to grow.
Daniel WellitonViral Tickets
My portfolio gained much more identity and presence. The attention to aesthetics, project organization, and visual experience helped showcase my work even better.
Japa DesignerJapa Designer
The person behind the work

Hi, I’m Marcelino.

I’m a software engineer and a hardware and infrastructure specialist. I connect interfaces, systems, equipment and networks so that the customer experience and the operation behind it work together.

Alongside websites, apps and custom systems, I provide technology consulting. I help assess existing environments, select equipment and solutions, and organize an improvement plan around the needs of your business.

  • A clear scope before building
  • Connected interface and business rules
  • A delivery organized for actual use
For a closer look

Technology supports the experience.

Interfaces, APIs, databases and deployment are planned as parts of the same project. Explore the technical details if you want to know more.

Interactive example

The person takes an action in the website or app. The interface organizes the input and shows the next step.

Explore the technical foundation
Front-end
HTML5 · CSS3 · JavaScript · TypeScript · React · Next.js · Vite · Tailwind CSS · Bootstrap · Responsive UI · Technical SEO · Web Performance
Back-end
PHP · Node.js · Python · Java · C# · REST APIs · Webhooks · JWT/Auth · MVC · Payments · Uploads and media · Validation and security
Databases
MySQL · MariaDB · PostgreSQL · Firebase · Redis · Relational modeling · Indexes · Backups · Migrations · Optimized queries
Mobile/PWA
Flutter · Kotlin · PWA · Android · iOS · WebView · Push Notifications · QR Code · Operational/check-in apps · POS devices
Infrastructure
Proxmox VE · LXC Containers · VPS · Dedicated server · Networks · DNS · Firewall · SSH · Reverse Proxy · Storage · NVMe/HDD · Server sizing · Stability focus
Before we start

A few useful answers.

Do you work with clients throughout Brazil?

Yes. I work remotely through online meetings, agreed scope and delivery reviews. Work requiring physical presence, such as equipment interventions, is assessed according to location and requirements.

I have an idea but no scope. Can we start there?

Yes. The first conversation helps us understand the goal, the people who will use the solution and the priorities. From there, we can define the project scope.

Can you work on a system that already exists?

Yes. An existing project can start with a technical review to understand its current state and identify the changes it needs.

Can I hire consulting without commissioning a new system?

Yes. Consulting can cover software, hardware or infrastructure: an assessment of your current setup, equipment and solution recommendations, and a plan with clear priorities. The deliverables are agreed in the proposal.

How are the timeline and price defined?

They depend on the features, integrations and deliverables. The proposal is defined after we understand the scope, so you can review it before work begins.

Do you also handle deployment and infrastructure?

Yes. Environment setup, deployment, access and usage guidance can be included in the agreed scope. Ongoing support and maintenance are discussed according to the project.

Let’s talk

What do you want to create or improve?

I work remotely with businesses throughout Brazil. Tell me about your idea and where you need help; you don’t need a technical specification to start.

Prefer a direct conversation?Chat on WhatsAppSend an email

I’ll use these details to respond about your project.

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