Alexandre Delgado
Senior .NET · single developer · GMT-3

One developer,
the entire system.

I'm Alexandre — a senior .NET engineer in Brasília. I design, build and ship complete corporate systems: architecture to production, web to mobile, data model to deploy. You brief one technical owner instead of assembling a team.

Fig. 01 — FrotiX · production architecture
CLIENTS Blazor web NOTIFY Twilio · WhatsApp 01 · FIELD .NET MAUI apps Inspections · Passenger count 02 · SECURE CHANNEL Secure link mobile ⇄ on-prem 03 · APPLICATION ASP.NET Core · Blazor Server & WebAssembly 04 · DATA SQL Server Indexed views
Project
Systems, end to end
Role
Sole developer
Location
Brasília · Remote
Scope
Web · Mobile · Data
/ 01

What I build for you

01

Complete web systems

Full corporate web applications in ASP.NET Core & Blazor — from the domain model to a running production deploy, not just a front end bolted onto someone else's API.

02

Mobile on your backend

Native mobile apps in .NET MAUI that plug straight into your existing .NET backend — one language, one team, no second stack to maintain.

03

Legacy modernization

Bring aging Web Forms and old MVC systems onto modern ASP.NET Core — safely, incrementally, without stopping the business that depends on them.

04

Performance & SQL

Make slow systems fast: SQL Server tuning, indexed views, and query work that turns sluggish grids and dashboards into instant ones.

05

API integrations

Wire your system into the services it needs — WhatsApp Business via Twilio, cloud APIs, third-party platforms — reliably and securely.

06

AI-powered features

AI built into the product itself — recommendations, analysis, smart search your users actually touch. Not AI to write code, but AI as a real feature, as in TrackList's "more like this" engine.

One person accountable for the whole thing — from data model to production.

/ 02 · Case study

FrotiX — fleet management for
the Brazilian Chamber of Deputies

A full platform running inside Brazil's federal parliament: trips, vehicles, drivers, fuel, maintenance, traffic fines and outsourced contracts — plus companion .NET MAUI mobile apps for field vehicle inspections and real-time passenger counting. I designed and built all of it, alone, from scratch.

ROLE — Sole developer
SCOPE — Web · Mobile · Data
STATUS — In production
[X]
Vehicles managed
[X]
Trips per month
[X]
Drivers
1
Developer, every layer
SECURE CONNECTIVITY

Field apps in .NET MAUI connect to the on-premises backend, keeping the same fleet data live on mobile and in the office.

AUTOMATED NOTIFICATIONS

Event-driven alerts over the WhatsApp Business API (Twilio) keep drivers and managers in the loop automatically.

FAST DATA LAYER

A SQL Server layer tuned with indexed views serves heavy grids and dashboards instantly, even over large operational datasets.

RICH UI COMPONENTS

Dozens of data-dense screens built on the Syncfusion suite — grids, schedulers, PDF viewers and reports — tuned for real operational use.

Screens — real captures to be added
SCREENSHOT — 01
Dashboard
SCREENSHOT — 02
Trip schedule
SCREENSHOT — 03
Mobile app · MAUI
/ 03

Technical stack

Web

C# ASP.NET Core Razor Pages Blazor Server Blazor WebAssembly JavaScript

Mobile

.NET MAUI MAUI Blazor Hybrid

Shared C# across mobile and web — one codebase mindset, from device to server.

Data

SQL Server Entity Framework Core Indexed views

UI components

Telerik Syncfusion

Deep experience with the two leading commercial .NET component suites — data grids, schedulers, charts, PDF and dashboards in real production systems.

/ 04

Live demos

Not screenshots — real, running instances of systems I built, hosted here for you to open and click through yourself. Deploying now on their own subdomains.

Each demo signs you into a dedicated demo account preloaded with sample data.

Sites — web systems

frotix.delgado-vieira.dev Live demo
WEB SYSTEM

FrotiX

Fleet-management platform for the Brazilian Chamber of Deputies — trips, vehicles, drivers, fuel, maintenance, fines and contracts. A real navigable instance, not a mockup.

Companion Android apps — part of the system
Vistorias Vehicle inspections in the field
Economildo Real-time passenger counting & operational data
Avisos The team broadcasts notices to the work group
Open live demo ↗

Android apps

delgadodev.works/tracklist-demo Live demo
ANDROID · MAUI ✳ AI RECOMMENDATIONS

TrackList

A movie & series catalog built end to end, with an AI engine that recommends similar titles from what you've already watched. Learn more...

TrackList Loading the Android app — .NET MAUI Blazor Hybrid, running live in your browser…
Open full screen ↗
delgadodev.works/gravatorio-demo Live demo
ANDROID · MAUI ✳ AI TRANSCRIPTS & DOCUMENTS

Gravatório

A session-recording app for therapists: record a consultation, get a speaker-labelled transcript and let AI draft the clinical note from your own templates. Learn more...

Gravatório Loading the Android app — .NET MAUI Blazor Hybrid, running live in your browser…
Open full screen ↗
delgadodev.works/questor-demo Live demo
ANDROID · MAUI ✳ AI-GENERATED FLASHCARDS

Questor

A study app for Brazilian civil-service exams: AI-generated true-or-false flashcards from real exam questions, credits, a performance dashboard and mistake review. Learn more...

Questor Loading the Android app — .NET MAUI Blazor Hybrid, running live in your browser…
Open full screen ↗
/ 05

Have a system that
needs one owner?

Tell me what you're building or what's slowing you down. I reply personally — usually within a day.

contact@delgado-vieira.dev →

…or chat with me live — in your language. Real-time AI translation.

Elsewhere
GMT-3

Based in Brasília, fluent in written English, with working-hours overlap across the US and Europe.

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