Available for remote opportunities
Breno Balsini
Frontend Full Stack Engineer | React · Next.js · TypeScript
Curitiba, Brazil • Open to Remote
Frontend Full Stack Engineer with 4+ years of experience building real-world web applications with React, Next.js and TypeScript. Experienced in the full development cycle — from UI design to API integration, performance optimization and deployment.
About Me
Frontend Full Stack Engineer focused on solving real operational problems — building apps that are actually used, by real people, in production.
Clean Code
Type-safe architecture with React and TypeScript — readable, scalable and easy to maintain
Full Cycle
From UI design and prototyping to API integration, deployment and iteration with real users
User-Centric
Working closely with end users to gather requirements and continuously improve UX
Production-Ready
Projects built for real clients and teams, not just demos — tested, deployed and in active use
Background
I'm a self-driven developer with a background in mathematics and a passion for turning real problems into working software. Since 2022 I've been working as a freelance frontend engineer, owning the full development cycle — from understanding the problem with the client to shipping and iterating in production.
My projects solve concrete operational challenges: the BAC Lifeguard Scheduling System replaced manual spreadsheets for a local lifeguard team with a custom algorithm handling shift constraints and staff quotas. The Flor de Sal Craft Pricing App is a full-stack tool used daily by a real artisan client to manage materials and automate product pricing.
I specialize in the React ecosystem — Next.js, TypeScript, TailwindCSS, Firebase — and I'm comfortable working across the stack when needed. I care about code quality, usability, and building things that actually work for the people using them.
Featured Projects
Real applications built for real users — from scheduling systems to full-stack tools used in production
Experience & Skills
Professional experience and technical expertise
Professional Experience
Frontend Engineer
Freelance
Feb 2022 – Present
Remote
Built and maintained personal web apps with React and Next.js focused on real operational problems — scheduling, data management and pricing automation.
Key Achievements:
- ▸Developed production-ready SPAs used by real clients and teams, from requirements gathering to deployment
- ▸Implemented authentication, forms and data flows consuming REST APIs and Firebase
- ▸Used no-code tools (Bubble) for quick MVP validation, then translated ideas into production React code
- ▸Worked closely with end users to iterate on UX and usability across multiple projects
Finance Department
Zeno Legal Experience Management
Dec 2020 – Nov 2021
Curitiba, Brazil
Worked in the finance department of a legal tech startup, focusing on data reporting and process automation.
Key Achievements:
- ▸Built automated Excel and Google Sheets dashboards for financial reporting
- ▸Reduced manual work and improved data accuracy across financial processes
- ▸Collaborated with internal teams to understand reporting needs and deliver reliable outputs
Technical Skills
Core Technologies
State & Styling
Backend & Tools
Testing
Education
Rocketseat
Full Stack Web Development Specialization
2024 – 2025
UTFPR
Mathematics — Undergraduate
2018 – 2023
Not completed — strong foundation in logic, algorithms and analytical thinking
Get In Touch
I'm currently open to new opportunities and interesting projects. Feel free to reach out if you'd like to collaborate!
balsini.breno@gmail.com
Phone
+55 41 99145-5658
Location
Curitiba, Brazil (Open to Remote)