Open to opportunities

Gui Bais

@guibais

Senior Software Engineer focused on Frontend and Mobile Engineering, with 6+ years of experience architecting and scaling high-performance application

Brazil

Message

What I'm looking for

I am looking for a role that fosters innovation and collaboration, where I can lead projects and contribute to impactful solutions.

I am a Senior Software Engineer with over 6 years of experience designing, building, and scaling web and mobile applications. Throughout my career, I have worked across industries such as e-commerce, fitness, fintech, logistics, and wearable technology, consistently delivering solutions that combine technical excellence with business impact.

My expertise spans React, React Native, Next.js, Node.js, TypeScript, microfrontend architectures, Backend-for-Frontend (BFF) patterns, and performance optimization. I enjoy solving complex engineering challenges, from improving mobile applications serving tens of thousands of monthly active users to architecting scalable platforms that support long-term business growth.

Most recently, I have led initiatives involving mobile performance optimization, wearable technology, native Android integrations, and large-scale frontend architectures. I am passionate about building maintainable systems, improving developer experience, and ensuring high-quality software through robust testing strategies and engineering best practices.

Beyond coding, I enjoy mentoring teams, driving technical decisions, and transforming complex requirements into elegant and scalable solutions that create real value for users and businesses alike.

Experience

Work history, roles, and key accomplishments

Current

Specialist Frontend Developer

Current

Grupo Boticário

Aug 2022 - Present (3 years 10 months)

Specialist Frontend Developer at Grupo Boticário, focusing on developing robust web applications utilizing modern technologies. The role involves leading initiatives for an integrated portal solution tailored for sales representatives, utilizing a microfrontend architecture to enhance maintainability and scalability.

Next.js Apollo Frontend Architecture Performance Optimization Customer Journey Web Applications Team Management

Senior Mobile and Frontend Developer

Facily

Apr 2021 - Apr 2022 (1 year)

Spearheaded the development of products for the logistics sector using Flutter. This role emphasized the design of scalable architectures that prioritize performance optimization and effective user experiences.

Flutter Mobile Development Frontend Development Performance Optimization Scalability Process Mapping

Mid-level Fullstack Developer

DQR Tech (BTG Pactual)

Feb 2021 - Apr 2021 (2 months)

Developed microfrontend modules aligned with existing interface requirements. Analyzed and implemented complex business rules for system modernization.

React Frontend Development Business Rules System Modernization

Frontend Engineer

Athos

Mar 2020 - Jan 2021 (10 months)

Architected and implemented scalable solutions replacing legacy systems. Led cross-functional team collaboration for feature development and system integration.

Vue Ionic PHP ASP.NET GraphQL MongoDB Scalable Systems Cross Functional Collaboration

Intern

Universidade De Mogi das Cruzes

Jul 2018 - Sep 2018 (2 months)

Maintained all university computers, cloning them via network to increase productivity and ease maintenance. Developed Java WEB applications to facilitate communication between students and teachers.

Java Web Applications Network Cloning System Administration