Hi there! I'm Renan Martins, a software engineer based in Fortaleza, Brazil, focused on mobile and web development with a passion for clean architecture and scalable solutions. I specialize in Flutter and cross-platform mobile apps, and have 4 years of experience delivering products across logistics, healthcare, IoT, sales, and education. Beyond coding, I enjoy building offline-first architectures, integrating RESTful APIs, and optimizing performance to provide delightful user experiences. I'm comfortable working across frontend and backend stacks, from Kotlin-based Android apps to Node.js services, always aiming for high quality, maintainability, and impactful results.…

Renan Martins

Hi there! I'm Renan Martins, a software engineer based in Fortaleza, Brazil, focused on mobile and web development with a passion for clean architecture and scalable solutions. I specialize in Flutter and cross-platform mobile apps, and have 4 years of experience delivering products across logistics, healthcare, IoT, sales, and education. Beyond coding, I enjoy building offline-first architectures, integrating RESTful APIs, and optimizing performance to provide delightful user experiences. I'm comfortable working across frontend and backend stacks, from Kotlin-based Android apps to Node.js services, always aiming for high quality, maintainability, and impactful results.…

Available to hire

Hi there! I’m Renan Martins, a software engineer based in Fortaleza, Brazil, focused on mobile and web development with a passion for clean architecture and scalable solutions. I specialize in Flutter and cross-platform mobile apps, and have 4 years of experience delivering products across logistics, healthcare, IoT, sales, and education.

Beyond coding, I enjoy building offline-first architectures, integrating RESTful APIs, and optimizing performance to provide delightful user experiences. I’m comfortable working across frontend and backend stacks, from Kotlin-based Android apps to Node.js services, always aiming for high quality, maintainability, and impactful results.

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Skills

Experience Level

Flutter
Expert
Dart
Expert
Kotlin
Expert
React Native
Expert
Android
Expert
TypeScript
Expert
JavaScript
Expert
Java
Expert
SQLite
Expert
Node.js
Expert
PostgreSQL
Expert
AWS
Expert
SQL
Expert
Oracle
Expert
Express
Expert
Laravel
Intermediate
PHP
Intermediate
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Work Experience

Software Engineer at SAT Soluções
February 1, 2026 - Present
Developed mobile and backend features for enterprise industrial platforms serving customers such as Arauco, VLI, and Rumo. Built mobile solutions for SAT Cronos, enabling real-time execution and tracking of maintenance and operational tasks in industrial environments. Contributed to a greenfield inventory and material reservation product, designing workflows and integrations with Firebase and Kafka-based event-driven services. Enhanced offline-first synchronization architecture, improving data reliability and user experience in environments with intermittent connectivity. Implemented critical business rules ensuring consistency, traceability, and integrity of logistics and inventory operations across distributed systems.
Mobile Developer at Polibras Software
September 1, 2025 - February 1, 2026
Improved product listing performance by 20% in a React Native sales application through component migration, memoization and retrieval-flow optimization. Optimized discount calculation workflows and application stability by adjusting Qt/C++ discount queries integrated with React Native. Developed and integrated Laravel/PHP APIs with mobile applications.
Mobile Developer at Megaleios
August 1, 2024 - September 1, 2025
Built 5 Android and iOS applications from concept to production using Flutter, Dart, Firebase and native integrations. Eliminated Out-of-Memory crashes and improved app stability by implementing infinite scrolling, pagination and optimized loading for heavy dynamic listings. Integrated payment systems with Pix and credit card flows using Iugu and webhooks for real-time transaction updates. Developed authentication, dashboards, reporting, maps, filters, user management features and responsive interfaces for mobile and tablet.
Frontend and Mobile Engineer at Rav Tecnologia
October 1, 2022 - August 1, 2024
Developed React, Next.js and Flutter solutions for IoT monitoring platforms, industrial project planning and agricultural field monitoring. Reduced screen loading times by up to 90% by optimizing backend requests with Node.js/Express and improving frontend rendering with React and Next.js. Implemented offline persistence using SQLite and cloud synchronization, increasing local data persistence in mobile flows. Improved automated test coverage by approximately 50% with Flutter Test and Mocktail, applying Clean Code and design patterns. Built REST APIs, database entities and backend logic using Node.js, Express, TypeORM and Oracle Database. Integrated AWS WAF Captcha security into Flutter applications through a WebView-based validation flow.

Education

Bachelor of Computer Engineering at Federal University of Ceara
February 1, 2020 - February 1, 2026

Qualifications

Add your qualifications or awards here.

Industry Experience

Agriculture & Mining, Telecommunications, Consumer Goods, Software & Internet, Healthcare, Education, Transportation & Logistics, Manufacturing, Professional Services
    Flutter Developer

    Context:

    • Application development from scratch and maintenance of existing applications

    Activities:

    • Functionality and screen integrations with Backend REST APIs
    • Feature integration with Google Maps
    • Code refactoring and technical improvements to the architecture
    • Integration with camera and photo gallery
    • Implementation of responsive interfaces for mobile and tablet on Android and IOS
    • Integration of payment and subscription screens with PIX and Credit Card
    • Integration with webhooks
    • Version publications and deployment in the Apple Store and Play Store and distribution in the Firebase console