Hi, I'm Vinícius Fernandes, a full stack engineer with 4+ years of experience building production-grade web applications across backend and frontend. I have a strong background in Ruby on Rails, Java, React, and modern TypeScript-based stacks, with a focus on clean architecture, TDD, and scalable SaaS systems. I thrive in fast-moving, remote, highly collaborative teams where ideas are shipped in days and validated through real user behavior. I enjoy owning features end-to-end—from discovery and implementation to measurement of impact on user conversion and revenue.

Vinícius Fernandes

Hi, I'm Vinícius Fernandes, a full stack engineer with 4+ years of experience building production-grade web applications across backend and frontend. I have a strong background in Ruby on Rails, Java, React, and modern TypeScript-based stacks, with a focus on clean architecture, TDD, and scalable SaaS systems. I thrive in fast-moving, remote, highly collaborative teams where ideas are shipped in days and validated through real user behavior. I enjoy owning features end-to-end—from discovery and implementation to measurement of impact on user conversion and revenue.

Available to hire

Hi, I’m Vinícius Fernandes, a full stack engineer with 4+ years of experience building production-grade web applications across backend and frontend. I have a strong background in Ruby on Rails, Java, React, and modern TypeScript-based stacks, with a focus on clean architecture, TDD, and scalable SaaS systems.

I thrive in fast-moving, remote, highly collaborative teams where ideas are shipped in days and validated through real user behavior. I enjoy owning features end-to-end—from discovery and implementation to measurement of impact on user conversion and revenue.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
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Language

English
Fluent
French
Intermediate
Portuguese
Fluent

Work Experience

Back End Engineer at TTZ
August 1, 2025 - Present
Develop and maintain multiple Ruby on Rails applications (ecommerce, educational, financial), collaborating with product and design to deliver high-quality, user-focused features. Apply clean code, SOLID principles, and performance-focused architecture to support scalable, maintainable systems. Use TDD (RSpec) to drive implementation and reduce regressions, increasing test coverage by approximately 20%. Collaborate with cross-functional teams in an agile environment to plan sprints, review code, and continuously improve development workflows.
Participant, Full-Stack Training Program at TREINA DEV – Campus Code
September 1, 2024 - March 1, 2025
Completed an intensive training program focused on TDD, Agile practices, and delivering value through clean, well-tested code in realistic project settings. Worked in collaborative squads on real-world challenges sponsored by industry partners, iterating quickly based on feedback. Implemented Rails features with RSpec, Capybara, and Cuprite, contributing to applications with 90%+ test coverage. Containerized applications with Docker and optimized local development workflows to speed up onboarding for new team members.
Full Stack Developer at Synchro Fiscal Solutions
October 1, 2021 - August 1, 2023
Led migration of a legacy fiscal system from Visual Basic to a React + Java/Spring architecture, including database design, REST API development, and UI implementation. Designed and implemented APIs consumed by React frontends to support complex fiscal workflows, improving performance and maintainability. Collaborated in Agile teams with product managers and other engineers, participating in code reviews, pair programming, and sprint planning. Reduced bugs in migrated modules by approximately 30% through refactoring, automated tests, and code review best practices.

Education

Bachelor’s in Computer Engineering at Federal University of Rio Grande do Norte (UFRN)
August 1, 2019 - July 1, 2025

Qualifications

Full-Stack Training Program Certification
September 1, 2024 - March 1, 2025

Industry Experience

Software & Internet, Education, Financial Services, Retail, Professional Services
    paper Vivala

    Brazilian Ecotourism E-commerce Platform

    This application is a Brazilian ecotourism e-commerce platform that connects travelers to authentic, sustainable expeditions across some of the country’s most biodiverse regions. Built with a strong focus on environmental responsibility and cultural preservation, the platform allows users to explore, compare, and book eco-friendly travel experiences offered on specific dates throughout Brazil.

    The platform’s navigation highlights its core areas: Home, Expeditions, Information about Vivalá, options for organizations, the Samaúma Institute, a blog, a help center, and contact channels. Users can browse in Portuguese, English, or Spanish, making it accessible for both national and international travelers.

    At the heart of the platform is a curated catalog of sustainable expeditions—including ecotourism routes, community-based experiences with traditional and Indigenous peoples, and adventure-focused journeys. Each destination features detailed descriptions, pricing, cultural highlights, and environmental significance. The homepage showcases Brazil’s greatest natural landscapes, from the Amazon and Pantanal to Jalapão, Chapada dos Veadeiros, Monte Roraima, Pico da Neblina, and more.

    A strong emphasis is placed on community-based tourism, giving travelers the opportunity to connect with Indigenous and local communities through immersive cultural exchanges. Other categories—like “Adventure Seekers” and “The Future Is Ancestral”—guide users to themed expeditions that match their interests, whether they seek adrenaline-filled treks or spiritual journeys rooted in ancestral knowledge.

    Beyond discovery and booking, the platform communicates its social mission. It highlights Vivalá’s impact:

    26 destinations in preserved areas

    4.4 million acres protected

    3,000+ travelers from over 20 countries

    R$ 4 million invested into local economies

    9,000 volunteer hours

    700+ community partners

    The site also includes pages for corporate partnerships, schools, NGOs, and community collaborators, reinforcing its ecosystem of responsible tourism. Users can access customer support, contact the team directly, or subscribe to newsletters for new expedition updates.

    Overall, the application is a modern, user-friendly digital marketplace that promotes authentic ecotourism, strengthens local communities, and fosters sustainable travel throughout Brazil.