Experienced engineer. New freelance chapter.

Software that works.
Systems that scale.

I’m Ciro, a software engineer with 25+ years of experience. I’m now bringing that experience to freelance projects—building applications, connecting systems, and modernizing software.

Discuss your project ↗ Explore my work ↓
CORE TECHNOLOGIES C# / .NET Vue / TypeScript SQL Server AWS / Azure Docker / CI/CD
Personal projects & engineering work

Useful software.
Thoughtful foundations.

Examples of my engineering work and personal projects—not a history of freelance client engagements.

Market data Strategies Dashboard
Trading software / Real-time systems

CRV.Trading

A personal futures trading platform combining strategy backtesting, broker integrations, and a real-time dashboard in ASP.NET Core.

C# / .NET 10 SignalR SQLite Azure
My contribution & outcome

Built a composable engine that separates strategy signals from order execution, sharing trade-lifecycle handling between live trading and historical simulation. Integrated Schwab, TradeStation, and Tradovate, with multi-instrument market data, configurable risk limits, and dashboard updates through SignalR. Added Docker and Bicep infrastructure for Azure deployment.

Vue 3 .NET API SQL
Developer tooling / Architecture

A foundation for the next application

A reusable .NET 10 and Vue 3 template with configurable authentication and cloud delivery infrastructure.

.NET 10 Vue 3 Terraform AWS
My contribution & outcome

Built a Clean Architecture template with JWT/Identity, Microsoft Entra ID, or no authentication. Added keyless OIDC-based AWS CI/CD and Terraform configuration for S3 and CloudFront, creating a reusable starting point for application development.

Windows macOS Linux
Desktop software / Modernization

Tail Blazer, across platforms

Migration work bringing a WPF log-tail application to Avalonia UI and .NET 10, with a reactive approach.

C# Avalonia UI .NET 10 Reactive
My contribution & outcome

Adapted Roland Pheasant’s original Tail Blazer application from WPF to Avalonia UI, targeting Windows, macOS, and Linux. The work focuses on preserving a fast, intuitive log-inspection experience across platforms.

Freelance services

Where I can help.

From a new application to the systems you already depend on.

01 / BUILD

Custom software

Web applications and internal tools shaped around your business and the people using them.

02 / CONNECT

APIs & integrations

Reliable connections between applications, data, and third-party services.

03 / AUTOMATE

Workflow automation

Reduce repetitive steps and connect the work happening across your systems.

04 / MODERNIZE

Legacy modernization

Improve existing applications, update their foundations, and prepare for what comes next.

A little about me

Engineering experience.
A personal approach.

I’m Cirino Carvalho—Ciro for short. My background spans more than 25 years in software engineering, enterprise integration, databases, and public-sector systems.

I’m starting my freelance practice, bringing professional engineering experience, direct communication, and a focus on maintainable software. My work spans .NET, modern web applications, and cloud delivery.

I also use ChatGPT, Claude, and GitHub Copilot in my development workflow, alongside engineering judgment, code review, and testing.

The engineering notebook

Ideas behind the work.

Notes on software engineering, practical tools, and the move into freelance work.

Let’s build something together

What are you working on?

A new product, a system that needs attention, or an integration that would make work easier.

Discuss your project ↗

hello@byciro.dev