Avaiable for new projects

Building Exceptional Software

Senior Full Stack Developer with 5+ years building scalable applications from legacy mainframe systems to modern cloud solutions. Specialized in banking & fintech with proven expertise leading technical teams and modernizing mission-critical systems serving millions of users daily.

Real-World Results

Featured Projects

See How I Transformed Ideas into Reality

Caixa Econômica Federal•2025

Caixa App - Mobile Banking Solution

Developed for Caixa Hackathon
Responsive Android/iOS interface
Complete loan and payment management

Open Source•2025

EasyCrawler - Java Web Crawler Library

Published on Maven Central
High-performance multi-threaded architecture
8 search strategies implemented

Personal Project•2025

AnimeList - API Rating Aggregator

Integration with 3 APIs (MAL, IMDb, Rotten Tomatoes)
Web scraping with Jsoup
Optimized performance with Quarkus

Performant

Accessible

Responsive

Intuitive

Dynamic

Engaging

Secure

Scalable

Optimized

Innovative

Robust

Maintainable

Cutting-Edge

User-Centric

Seamless

Interactive

Fast-Loading

Work

My Work Experience

A timeline of my professional journey.

Caixa Economica

Full Stack Developer

Caixa Economica

Full Stack Developer

Mission-critical banking systems developer in the Payment Methods sector, Credit Cards community, working across multiple agile squads. Specializing in legacy system modernization by migrating COBOL mainframe applications to Java Quarkus microservices while maintaining and developing Angular applications for internal branch operations.

Qintess

Full Stack Developer

Qintess

Full Stack Developer

Full stack developer in a 10-member development team focused on creating and enhancing internal enterprise frameworks using Java, with diverse technology stack including Python, Node.js, React, and Docker. Specialized in developing custom modules and solutions based on company framework requirements.

Matriz One

Full Stack Developer

Matriz One

Full Stack Developer

Full stack developer working on two main enterprise platforms: Flex Ocupacional, a nationwide occupational health and safety software, and MatrizOne EAD, an e-learning platform for corporate training. Specialized in Brazilian government API integrations and containerized solutions.

Syscoin

Front End Developer

Syscoin

Front End Developer

Frontend engineer, UI/UX designer, and web designer specializing in high-performance e-commerce development and SEO optimization across multiple platforms. Certified in major e-commerce platforms including WooCommerce, Jet, Linx, Tray, VTEX, Magento, and Shopify, working with clients ranging from high-traffic Instagram stores to luxury jewelry retailers.

GetNinjas

PHP/Wordpress Developer

GetNinjas

PHP/Wordpress Developer

Independent freelance developer specializing in custom WordPress development and institutional website creation. Working through the GetNinjas platform to deliver bespoke e-commerce solutions and corporate websites with secure payment integrations and PCI compliance standards.

WHAT MY CLIENTS SAY

Professional Achievements

Key accomplishments and recognitions from my career.

Gabriel's leadership in modernizing legacy COBOL systems to modern Java microservices has ensured 99.9% uptime for millions of users.

Team Lead

Caixa Econômica Federal

His framework development skills created reusable solutions adopted by 8+ teams, reducing development time by 30%.

Senior Developer

Qintess

Gabriel's expertise in government API integrations achieved 100% compliance for automated reporting systems.

Project Manager

Matriz One

Gabriel's leadership in modernizing legacy COBOL systems to modern Java microservices has ensured 99.9% uptime for millions of users.

Team Lead

Caixa Econômica Federal

His framework development skills created reusable solutions adopted by 8+ teams, reducing development time by 30%.

Senior Developer

Qintess

Gabriel's expertise in government API integrations achieved 100% compliance for automated reporting systems.

Project Manager

Matriz One

His frontend development improved page load speeds by 50% and mobile conversion rates by 25% across e-commerce platforms.

Client

Syscoin Space

Gabriel's secure e-commerce solutions maintained PCI compliance with zero security incidents over 2 years.

Freelance Client

GetNinjas

His mobile banking app with biometric authentication and SSL pinning enhanced security for financial applications.

Mobile Lead

Caixa Econômica Federal

His frontend development improved page load speeds by 50% and mobile conversion rates by 25% across e-commerce platforms.

Client

Syscoin Space

Gabriel's secure e-commerce solutions maintained PCI compliance with zero security incidents over 2 years.

Freelance Client

GetNinjas

His mobile banking app with biometric authentication and SSL pinning enhanced security for financial applications.

Mobile Lead

Caixa Econômica Federal

Gabriel's containerization with Docker reduced deployment time by 70% and improved system reliability.

DevOps Engineer

Matriz One

His mentorship of junior developers and establishment of coding standards improved team productivity.

Mentor

Qintess

Gabriel's technical versatility across Java, COBOL, Python, and modern frameworks bridges legacy and cloud solutions.

Full Stack Architect

Various Companies

Gabriel's containerization with Docker reduced deployment time by 70% and improved system reliability.

DevOps Engineer

Matriz One

His mentorship of junior developers and establishment of coding standards improved team productivity.

Mentor

Qintess

Gabriel's technical versatility across Java, COBOL, Python, and modern frameworks bridges legacy and cloud solutions.

Full Stack Architect

Various Companies

About Me

My Key Strongs

Learn more about my background, skills, and expertise.

resume.pdf

My professional resume highlighting key skills, experience, and achievements.

skills.docx

Document outlining technical and soft skills with proficiency levels.

experience.pptx

Presentation of work experience, projects, and career milestones.

certifications.jpg

Image showcasing certifications, awards, and professional recognitions.

portfolio.html

Interactive web page displaying my portfolio of projects and work.

resume.pdf

My professional resume highlighting key skills, experience, and achievements.

skills.docx

Document outlining technical and soft skills with proficiency levels.

experience.pptx

Presentation of work experience, projects, and career milestones.

certifications.jpg

Image showcasing certifications, awards, and professional recognitions.

portfolio.html

Interactive web page displaying my portfolio of projects and work.

resume.pdf

My professional resume highlighting key skills, experience, and achievements.

skills.docx

Document outlining technical and soft skills with proficiency levels.

experience.pptx

Presentation of work experience, projects, and career milestones.

certifications.jpg

Image showcasing certifications, awards, and professional recognitions.

portfolio.html

Interactive web page displaying my portfolio of projects and work.

resume.pdf

My professional resume highlighting key skills, experience, and achievements.

skills.docx

Document outlining technical and soft skills with proficiency levels.

experience.pptx

Presentation of work experience, projects, and career milestones.

certifications.jpg

Image showcasing certifications, awards, and professional recognitions.

portfolio.html

Interactive web page displaying my portfolio of projects and work.

Resume Documents

Explore my resume and related professional documents.

Download my resume

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Team collaboration

Strong communication

Effective communication skills for better collaboration and understanding.

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Skills & Tools

Proficient in various programming languages, frameworks, and development tools.

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Global Professional

International experience and global collaboration skills.

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Let's create something amazing together

Ready to bring yout next project to life? Let's connect and discuss how i can help you to achieve your goals.