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Ycaro Pires

Full-Stack Software Engineer

Fortaleza/CE, Brasil
+55 (85) 98982-8279

Summary

Backend Software Engineer with 4+ years of experience building scalable, high-availability systems using Ruby on Rails in production environments. Proven track record delivering mission-critical integrations for public-sector clients, reducing operational friction and improving delivery speed. Strong background in API-driven services, background job processing, CI/CD pipelines, OOP, and SOLID principles. Experienced integrating AI-powered solutions via external APIs to automate workflows and enhance team productivity.

Professional Experience

Mid-level Software Engineer

Coreplan
  • I drove end-to-end design and delivery of a mission-critical DJE integration (Diario da Justica Eletronico), opening a new official judicial communication channel and driving institutional adoption across 4+ State Attorney General Offices.
  • I built a robust integration architecture with external judicial services, improving data traceability and legal communication delivery speed by ~40% through structured flow orchestration and error handling.
  • I proactively identified system bottlenecks and proposed architectural improvements that reduced production incidents by ~25%, supporting scalable growth across multiple government clients.
  • I integrated an AI-powered solution via external APIs — handling flow orchestration, data processing, and response validation for enterprise use — while supporting CI/CD-driven deployments across high-availability systems.
  • I acted as technical reference for complex integrations, running code reviews and solution design sessions that reduced review round-trips and increased overall team delivery confidence.

Junior Software Developer

Coreplan
  • I designed and shipped new features for 4 State Attorney General Offices (Mato Grosso, Distrito Federal, Espirito Santo, and Maranhao), improving operational workflows for thousands of public-sector users.
  • I enhanced the core platform using Ruby on Rails, JavaScript (jQuery), Bootstrap, and PostgreSQL, delivering performance improvements that reduced average page load time by ~20%.
  • I integrated third-party APIs and delivered high-priority hotfixes with same-day turnaround, reducing client-facing downtime and accelerating feature delivery.
  • I drove front-end development of the Conciliation Portal within a microservices architecture using React.js and Next.js, improving usability, modularity, and accessibility.
  • I maintained a well-structured, RSpec-tested codebase, applying automated tests to reduce regression risk and support continuous delivery.

Intern Software Developer

Coreplan
  • I implemented features and resolved performance bottlenecks in CorePlan's SPA using Ruby on Rails, PostgreSQL, and JavaScript, contributing to product stability in a fast-paced agile environment.

Education

B.S. in Systems Analysis and Development

University Estacio de Sa — Fortaleza, Brazil

Technical Skills

Backend

Ruby Ruby on Rails PostgreSQL SQL Sidekiq Node.js Background Job Processing

Frontend

JavaScript / ES6+ React.js Next.js HTML5 CSS

Tools & Practices

Git CI/CD REST API Integration AI API Integration RSpec & Unit Testing OOP / SOLID

Languages

Portuguese (Native) English (Fluent) Spanish (Basic)

Courses & Training

Ruby on Rails 5.x

Udemy

Comprehensive Ruby on Rails course focused on MVC design pattern and practical implementation for building scalable web applications, emphasizing best practices, code organization, and application architecture.

Modern Web Development with Javascript

Udemy

ES6+ JavaScript, HTML, CSS, React, relational and non-relational databases. Multiple hands-on projects building dynamic, responsive web applications.

Speed Training — Business Management

Speed Training, Fortaleza

Five modules: Administrative Management, People Management with Leadership, Corporate Communication and Marketing, Entrepreneurship, and Business Simulation.

Accomplishments

Santander Tech Scholarship

Santander & DIO — Fortaleza, Brazil

Awarded and successfully completed a competitive scholarship program for an intensive Java + AngularJS Full-Stack Bootcamp. Emphasized hands-on experience in enterprise-level application development, covering both front-end and back-end technologies, best practices, and modern software engineering principles.

Interested in working together? Let's talk.

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