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I'm Victor Lamark, a Mobile Software Engineer with a focus on Flutter and fintech-ready solutions. I enjoy translating business requirements into intuitive, high-quality features and refining UI/UX to improve user journeys. I’m passionate about building reliable, scalable apps and collaborating across teams to ship production-ready software. When I’m not coding, I explore performance optimization, debugging complex issues, and learning new technologies to keep our apps fast, resilient, and user-friendly across devices and regions.…I'm Victor Lamark, a Mobile Software Engineer with a focus on Flutter and fintech-ready solutions. I enjoy translating business requirements into intuitive, high-quality features and refining UI/UX to improve user journeys. I’m passionate about building reliable, scalable apps and collaborating across teams to ship production-ready software. When I’m not coding, I explore performance optimization, debugging complex issues, and learning new technologies to keep our apps fast, resilient, and user-friendly across devices and regions.

Victor Lamark

Full Stack Developer, App Developer, Developer, +4

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I'm Victor Lamark, a Mobile Software Engineer with a focus on Flutter and fintech-ready solutions. I enjoy translating business requirements into intuitive, high-quality features and refining UI/UX to improve user journeys. I’m passionate about building reliable, scalable apps and collaborating across teams to ship production-ready software. When I’m not coding, I explore performance optimization, debugging complex issues, and learning new technologies to keep our apps fast, resilient, and user-friendly across devices and regions.…I'm Victor Lamark, a Mobile Software Engineer with a focus on Flutter and fintech-ready solutions. I enjoy translating business requirements into intuitive, high-quality features and refining UI/UX to improve user journeys. I’m passionate about building reliable, scalable apps and collaborating across teams to ship production-ready software. When I’m not coding, I explore performance optimization, debugging complex issues, and learning new technologies to keep our apps fast, resilient, and user-friendly across devices and regions.

Available to hire

I’m Victor Lamark, a Mobile Software Engineer with a focus on Flutter and fintech-ready solutions. I enjoy translating business requirements into intuitive, high-quality features and refining UI/UX to improve user journeys. I’m passionate about building reliable, scalable apps and collaborating across teams to ship production-ready software.

When I’m not coding, I explore performance optimization, debugging complex issues, and learning new technologies to keep our apps fast, resilient, and user-friendly across devices and regions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

Portuguese

Fluent

English

Fluent

Spanish; Castilian

Intermediate

Work Experience

Full Stack Developer (Flutter || Golang) at GPS group - Curitiba, PR - Brazil

December 1, 2023 - Present

Responsible for building and maintaining Flutter applications for a group with more than 200,000 employees and supporting tasks in Golang and Postgres. Duties include maintenance of an application used to record employee entry and exit, functions for registering and signing documents for employees, and managing CV registrations and job vacancy searches.

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.

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.

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.

Full Stack Developer at Grupo GPS

January 1, 2023 - Present

Refined and optimized mobile application features, improving user experience and increasing platform revenue by 15%. Identified and resolved performance bottlenecks, reducing API response times by over 50%. Improved user flows and interface clarity by translating business requirements into intuitive mobile experiences. Managed full production release cycle, ensuring app readiness and compliance for App Store and Google Play.

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.

Mobile Developer at CroSoften

January 1, 2022 - January 1, 2023

Delivered a complete e-commerce application in 45 days, focusing on performance and usability. Implemented full user journey, including onboarding and purchase flow. Ensured scalability and smooth user experience under real-world usage.

Full Stack Developer at LF Tecnologia

January 1, 2021 - January 1, 2023

Developed and optimized mobile features integrating APIs and real-time data. Improved user navigation through deep linking and structured flows. Built scalable backend integrations supporting mobile applications.