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I am a mobile developer specializing in Flutter with solid experience in creating and maintaining applications. I can manage the entire process — from architecture and performance optimization to complex features such as offline mode, background tasks, secure authentication, and integrations with complex APIs. I also have a good backend experience with Golang, Node.JS, C#, PostgreSQL, MySQL, NoSQL databases. Over the years, I’ve worked on apps used by thousands of people, shipped features that made a real business impact, integrated with specialized hardware (like Zebra scanners and label printers), and streamlined flows that improved both user experience and operational efficiency. I'm passionate about technology and am always looking for new ways to improve my skills and deliver high-quality products that solve real problems and bring measurable value. Stacks: Flutter/Dart, Node.js/JavaScript, Golang, C#. State Management: Mobx, Getx, Bloc, Cubit, Riverpod and Provider. Storage/Database: Hive, Shared Preferences, Isar, Drift. Https requests: Dio, Http. Dependency Injection: Nativa, Modular, GetIt, GoRouter. Code Management/Repositories: Git, GitHub, Azure, BitBucket, GitLab. Agile Methodologies: Scrum, Kanban. Pipelines e Releases: CI/CD. Integration with Native Components in Kotlin, Swift. Analytics: Firebase, Google Cloud. Maps: Google Maps, Geolocator. Localization/Translate: i69n, i18n.…I am a mobile developer specializing in Flutter with solid experience in creating and maintaining applications. I can manage the entire process — from architecture and performance optimization to complex features such as offline mode, background tasks, secure authentication, and integrations with complex APIs. I also have a good backend experience with Golang, Node.JS, C#, PostgreSQL, MySQL, NoSQL databases. Over the years, I’ve worked on apps used by thousands of people, shipped features that made a real business impact, integrated with specialized hardware (like Zebra scanners and label printers), and streamlined flows that improved both user experience and operational efficiency. I'm passionate about technology and am always looking for new ways to improve my skills and deliver high-quality products that solve real problems and bring measurable value. Stacks: Flutter/Dart, Node.js/JavaScript, Golang, C#. State Management: Mobx, Getx, Bloc, Cubit, Riverpod and Provider. Storage/Database: Hive, Shared Preferences, Isar, Drift. Https requests: Dio, Http. Dependency Injection: Nativa, Modular, GetIt, GoRouter. Code Management/Repositories: Git, GitHub, Azure, BitBucket, GitLab. Agile Methodologies: Scrum, Kanban. Pipelines e Releases: CI/CD. Integration with Native Components in Kotlin, Swift. Analytics: Firebase, Google Cloud. Maps: Google Maps, Geolocator. Localization/Translate: i69n, i18n.

Victor Lamarck

Full Stack Developer, App Developer, Developer, +6

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I am a mobile developer specializing in Flutter with solid experience in creating and maintaining applications. I can manage the entire process — from architecture and performance optimization to complex features such as offline mode, background tasks, secure authentication, and integrations with complex APIs. I also have a good backend experience with Golang, Node.JS, C#, PostgreSQL, MySQL, NoSQL databases. Over the years, I’ve worked on apps used by thousands of people, shipped features that made a real business impact, integrated with specialized hardware (like Zebra scanners and label printers), and streamlined flows that improved both user experience and operational efficiency. I'm passionate about technology and am always looking for new ways to improve my skills and deliver high-quality products that solve real problems and bring measurable value. Stacks: Flutter/Dart, Node.js/JavaScript, Golang, C#. State Management: Mobx, Getx, Bloc, Cubit, Riverpod and Provider. Storage/Database: Hive, Shared Preferences, Isar, Drift. Https requests: Dio, Http. Dependency Injection: Nativa, Modular, GetIt, GoRouter. Code Management/Repositories: Git, GitHub, Azure, BitBucket, GitLab. Agile Methodologies: Scrum, Kanban. Pipelines e Releases: CI/CD. Integration with Native Components in Kotlin, Swift. Analytics: Firebase, Google Cloud. Maps: Google Maps, Geolocator. Localization/Translate: i69n, i18n.…I am a mobile developer specializing in Flutter with solid experience in creating and maintaining applications. I can manage the entire process — from architecture and performance optimization to complex features such as offline mode, background tasks, secure authentication, and integrations with complex APIs. I also have a good backend experience with Golang, Node.JS, C#, PostgreSQL, MySQL, NoSQL databases. Over the years, I’ve worked on apps used by thousands of people, shipped features that made a real business impact, integrated with specialized hardware (like Zebra scanners and label printers), and streamlined flows that improved both user experience and operational efficiency. I'm passionate about technology and am always looking for new ways to improve my skills and deliver high-quality products that solve real problems and bring measurable value. Stacks: Flutter/Dart, Node.js/JavaScript, Golang, C#. State Management: Mobx, Getx, Bloc, Cubit, Riverpod and Provider. Storage/Database: Hive, Shared Preferences, Isar, Drift. Https requests: Dio, Http. Dependency Injection: Nativa, Modular, GetIt, GoRouter. Code Management/Repositories: Git, GitHub, Azure, BitBucket, GitLab. Agile Methodologies: Scrum, Kanban. Pipelines e Releases: CI/CD. Integration with Native Components in Kotlin, Swift. Analytics: Firebase, Google Cloud. Maps: Google Maps, Geolocator. Localization/Translate: i69n, i18n.

Available to hire

I am a mobile developer specializing in Flutter with solid experience in creating and maintaining applications. I can manage the entire process — from architecture and performance optimization to complex features such as offline mode, background tasks, secure authentication, and integrations with complex APIs.

I also have a good backend experience with Golang, Node.JS, C#, PostgreSQL, MySQL, NoSQL databases.

Over the years, I’ve worked on apps used by thousands of people, shipped features that made a real business impact, integrated with specialized hardware (like Zebra scanners and label printers), and streamlined flows that improved both user experience and operational efficiency.

I’m passionate about technology and am always looking for new ways to improve my skills and deliver high-quality products that solve real problems and bring measurable value.

Stacks: Flutter/Dart, Node.js/JavaScript, Golang, C#.
State Management: Mobx, Getx, Bloc, Cubit, Riverpod and Provider.
Storage/Database: Hive, Shared Preferences, Isar, Drift.
Https requests: Dio, Http.
Dependency Injection: Nativa, Modular, GetIt, GoRouter.
Code Management/Repositories: Git, GitHub, Azure, BitBucket, GitLab.
Agile Methodologies: Scrum, Kanban.
Pipelines e Releases: CI/CD.
Integration with Native Components in Kotlin, Swift.
Analytics: Firebase, Google Cloud.
Maps: Google Maps, Geolocator.
Localization/Translate: i69n, i18n.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

Portuguese

Fluent

English

Advanced

Spanish; Castilian

Intermediate

Work Experience

Mobile Developer (Flutter) at CrosOften - Curitiba, PR - Brazil

December 31, 2023 - July 8, 2025

Created and published an e-commerce application on the App Store and Play Store from scratch within 2 months. Addressed and resolved troubleshooting issues reported by Apple and maintained client relationships to understand their needs.

Senior Mobile Software Developer at Grupo GPS

December 1, 2023 - Present

Enabled clock-in through the app, boosting platform revenue by 15% via digital receipt viewing and download built with Flutter/Dart. Built a new white-label Flutter/Dart HR app supporting résumé registration, job browsing, document uploads, contract signing, file sharing, offline support, background tasks, and theme customization. Improved API performance in Golang, cutting response times by over 50% through optimized routing and SQL queries. Translated business requirements into user flows aligned across Product, Design, and Development teams. Managed app deployment to the Apple App Store and Google Play, ensuring policy compliance via build preparation, certificate configuration, publishing, and review tracking.

Mobile Developer (Flutter) at Hipe Innovation - Curitiba, PR - Brazil

December 1, 2023 - July 8, 2025

Built and maintained e-commerce, inventory maintenance, label printing, and event applications. Helped clients increase revenue by improving functionality, optimized stock maintenance with an app that reads and prints labels, and created an application to manage creation and execution of events and raffles, including user registration and ticket printing.

Full Stack Developer (Flutter/Node.JS) at LF Tecnologia - Curitiba, PR - Brazil

February 28, 2023 - July 8, 2025

Created and maintained various applications including the largest craft beer app with features such as viewing and rating beers, social network-like user interactions (follow, unfollow, chat, and share), beer identification through label scanning, a combined user and admin module accessible via mobile, desktop, or web, and a TV display system for beers available at bars with management via mobile phone.

Mobile Developer at HPE Innovation Center

January 1, 2023 - Present

Reduced API calls by 75%, significantly improving app performance and responsiveness. Redesigned UI components to improve usability and navigation flow. Implemented logging systems to detect and debug hard-to-reproduce issues. Enhanced overall application stability and user experience.