Breno Balsini

Frontend Engineer | React & TypeScript Specialist

Curitiba, Brazil • Open to Remote

Product-focused engineer with expertise in building scalable B2B SaaS solutions. Passionate about performance optimization, clean architecture, and delivering exceptional user experiences.

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About Me

I'm a frontend engineer specializing in React and TypeScript, with a passion for building scalable B2B SaaS applications and solving complex technical challenges.

Clean Code

Focused on writing maintainable, type-safe code with React and TypeScript

Fast Delivery

Experienced in rapid prototyping and MVP development for startups

User-Centric

Translating complex requirements into intuitive user experiences

Performance

Optimizing applications for speed and scalability

Background

With a strong foundation in mathematics from UTFPR, I bring analytical thinking and problem-solving skills to every project. My experience ranges from building complex scheduling algorithms to architecting full-stack B2B platforms.

Currently, I work as a freelance software engineer, collaborating with multiple startups to deliver end-to-end product features. I specialize in the React ecosystem, with expertise in Next.js, TypeScript, and modern state management solutions.

I'm passionate about performance optimization, clean architecture, and creating seamless user experiences. When I'm not coding, you'll find me playing guitar, exploring music theory, or diving into the latest tech innovations.

Featured Projects

A selection of projects showcasing my expertise in React, TypeScript, and full-stack development

BAC - Lifeguard Scaling System
Developed a sophisticated Single Page Application that replaces manual spreadsheet work with an intelligent scheduling system. The application handles shift constraints, staff preferences, and quota management through a custom-built optimization algorithm.

BAC - Lifeguard Scaling System

Complex SPA automating staff scheduling for lifeguard teams with custom optimization algorithms

Key Highlights:

  • • Custom optimization algorithm for shift scheduling
  • • Type-safe architecture ensuring data reliability
ReactTypeScriptAlgorithm OptimizationZustand
Code
Zeno B2B ERP System
Architected the complete frontend for a B2B management platform, focusing on complex data flows for inventory tracking and sales operations. Designed intuitive UI workflows that directly improved user retention.

Zeno B2B ERP System

Frontend architecture for enterprise management platform handling inventory and sales workflows

Key Highlights:

  • • Architected entire frontend architecture from scratch
  • • External API integrations reducing manual entry by 40%
ReactNext.jsTypeScriptTailwindCSSREST APIs
Fans & Trato SaaS Platforms
Led UI implementation for rapid MVP validation across multiple SaaS products, ensuring pixel-perfect design translation from Figma. Integrated critical features like payment gateways and authentication.

Fans & Trato SaaS Platforms

Multiple SaaS platforms with payment integration and secure authentication systems

Key Highlights:

  • • Pixel-perfect Figma to code translation
  • • Payment gateway integration
ReactTypeScriptFigmaPayment APIsAuthentication

Experience & Skills

Professional experience and technical expertise

Professional Experience

Software Engineer

Freelance

2023 – Present

Remote

Full-cycle developer for multiple startups (Fans, Trato, Zeno), delivering end-to-end product features

Key Achievements:
  • ▸Architected frontend for B2B ERP managing complex inventory and sales flows
  • ▸Designed API integrations reducing manual data entry by 40%
  • ▸Led UI implementation ensuring pixel-perfect design translation from Figma
  • ▸Integrated payment gateways and authentication systems for secure user data handling
ReactNext.jsTypeScriptTailwindCSSFirebaseREST APIs

Technical Skills

Core Technologies

JavaScript (ES6+)TypeScriptReact.jsNext.jsHTML5CSS3

State & Styling

TailwindCSSShadcnUI

Backend & Tools

Firebase (Firestore, Auth)REST APIsGitFigma

Testing

JestReact Testing Library

Education

Rocketseat

Full Stack Web Development Specialization

2024-2025

UTFPR

Mathematics (Undergraduate)

Strong foundation in logic and algorithms

Get In Touch

I'm currently open to new opportunities and interesting projects. Feel free to reach out if you'd like to collaborate!

LinkedIn

linkedin.com/in/breno-balsini

GitHub

github.com/BrenoBalsini

Email

balsini.breno@gmail.com

Phone

+55 41 99145-5658

Location

Curitiba, Brazil (Open to Remote)