Hi, my name is
Chialo Armando.
I'm a back-end software developer

Back-end developer with nearly four years of experience modernizing legacy systems and building high-performance, scalable REST APIs. I lean on clean architecture, Domain-Driven Design, SOLID, and DevOps practices—from CI/CD and Docker to observability and cloud-ready deployments—with a strong focus on data integrity, performance, and reliable integrations.

Download my Resume

About Me

How everything started?

The first time my father gave me a computer I did not sleep for at least 2 days, I got so amazed that I wanted so much to discover how those windows and buttons where created, how folders reacted to my clicks so fast, how those cables were bringing colored lights to the monitor, how the mouse pointer obeyed carefully my movements. After some researches (there was a precious offline version of wikipedia) I found the answer: there was something called Computer Science.

Who I am

Today I focus on back-end work—leading large-scale data migrations, improving performance under load, and integrating critical third-party and government systems while keeping releases safe and boring in the best way. I still love the craft: learning fast, shipping maintainable code, and helping teams adopt solid engineering habits.

Skills & tools

Languages & .NET

  • C
  • C#
  • Go (Golang)
  • .NET
  • ASP.NET Core
  • Entity Framework Core
  • WinForms

Data & APIs

  • REST APIs
  • SQL Server
  • MySQL
  • SQLite
  • Microsoft SQL

Platform & DevOps

  • Docker
  • GitHub Actions
  • Git / GitHub
  • Linux / Ubuntu
  • Windows
  • Nginx
  • Bash
  • Cloud computing

Observability

  • Prometheus
  • Grafana
  • OpenTelemetry
  • Jaeger
  • Zipkin
  • Observability

Architecture & delivery

  • DDD
  • Clean Architecture
  • DevOps
  • Desktop

Languages

  • English (fluent)
  • Portuguese (fluent)
My Picture

Experience

Software Developer

02/2024 – Present

Logicpulse Technologies · Porto, Portugal

  • Led full modernization of a mission-critical legacy POS system (10+ years) deployed across 3+ countries, with a complete architectural overhaul while preserving 100% data integrity and zero business disruption.
  • Architected and built a high-performance REST API for electronic invoicing and analytics, consumed by external enterprise systems including ERPs—serving as a durable integration layer.
  • Introduced asynchronous patterns into legacy code for at least 30% faster processing and better responsiveness under load.
  • Delivered a high-volume data migration engine between heterogeneous databases to streamline the legacy-to-modern transition.
  • Integrated official fiscal APIs from AGT (Angola) and AT (Portugal) for real-time tax compliance and synchronization with government systems.

DevOps Engineer

08/2024 – 12/2024

Ocaso Group · Luanda, Angola

  • Implemented and managed CI/CD with GitHub Actions from development through production.
  • Integrated middleware for payment processing and sales tracking.
  • Built a secure, real-time chat API for patient–doctor communication.

.NET Developer

11/2023 – 03/2024

Tecno Excelência · Luanda, Angola

  • Led development of a modern desktop POS using WinForms and Blazor with Clean Architecture and DDD.
  • Drove code reviews and consistent design patterns to reduce defects and speed up delivery.

Software Developer

08/2023 – 02/2024

Flor África · Luanda, Angola

  • Designed and developed a REST API for a carbon emission management platform using DDD and Clean Architecture with SOLID-focused design.
  • Built a resilient C algorithm for Arduino IoT sensors for reliable data transmission in low-connectivity environments.
  • Created a JavaScript library to normalize data from multiple weather stations.

.NET Developer

04/2023 – 07/2023

Autonação · Luanda, Angola

  • Developed a REST API for a national institute’s material resource management system using Entity Framework and Dapper.
  • Shipped the SCG (Student Card Generator) WinForms app with image handling and automatic photo sizing.
  • Introduced EF to the team stack to reduce complexity and speed up feature work.

Education

Associate’s Degree · Information Technology

03/2025 – Present

Descomplica Faculdade Digital · Campinas, Brazil

Expected associate’s degree (in progress).

High School Diploma · Information Technology

02/2018 – 05/2022

IPIL · Luanda, Angola

Projects

Project

Fstock

Inventory and product sales management system and billing software, intended for small and medium-sized businesses.

  • WinForms
  • Guna UI
  • Bunifu
  • EntityFramework Core
  • MySQL
  • SQLite
View
Fstock application screenshot

Project

LogicPOS

Open-source POS system, stock management, and billing software with support for multiple database systems.

  • ASP.NET Core (.NET 9)
  • GTK
  • EF Core
  • MySQL
  • SQL Server
  • SQLite
  • Docker
View
LogicPOS on a POS terminal

Project

Student Card Generator (SCG)

A software that generates automatically students cards. It was designed for a national high-school in Angola.

  • WinForms
  • Guna UI
  • Bunifu
  • Dapper-ORM
  • MySQL
  • EntityFramework Core
Ask me about
Student Card Generator screenshot

Project

MyExcel

A NuGet package (1K+ downloads) to read and write Excel files with a simple API.

  • .NET Standard 2.0
  • C#
  • Microsoft Office Interop
Nuget Package Repository
MyExcel NuGet package

Project

Tecnogest

A simple POS System, stock management and billing software. It was designed for small-mid sized stores.

  • WinForms
  • Blazor
  • HTML
  • Javascript
  • CSS
  • EntityFramework Core
  • MySQL
  • SQLite
Ask me about
Tecnogest application screenshot

And now 😶?

Get In Touch

Would you like to tell me something?

tchialo.crocodile@gmail.com · +244 931 682 903 · Luanda, Angola

Say Hello
Chialo
Armando
Welcome!