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Senior Flutter Developer with 5 years of experience delivering production-grade mobile applications for startups and commercial clients. I architect scalable solutions, own end-to-end product delivery, and work closely with product, design, and engineering teams to turn requirements into reliable app experiences. I focus on clean architecture, CI/CD, testing, performance optimization, and measurable product impact (analytics, retention, and reduced support load). Recently, I’ve also contributed to Angular development to support simultaneous web and mobile feature delivery.…Senior Flutter Developer with 5 years of experience delivering production-grade mobile applications for startups and commercial clients. I architect scalable solutions, own end-to-end product delivery, and work closely with product, design, and engineering teams to turn requirements into reliable app experiences. I focus on clean architecture, CI/CD, testing, performance optimization, and measurable product impact (analytics, retention, and reduced support load). Recently, I’ve also contributed to Angular development to support simultaneous web and mobile feature delivery.

Kukli Norbert

App Developer, Web Developer, Software Engineer, +3

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Senior Flutter Developer with 5 years of experience delivering production-grade mobile applications for startups and commercial clients. I architect scalable solutions, own end-to-end product delivery, and work closely with product, design, and engineering teams to turn requirements into reliable app experiences. I focus on clean architecture, CI/CD, testing, performance optimization, and measurable product impact (analytics, retention, and reduced support load). Recently, I’ve also contributed to Angular development to support simultaneous web and mobile feature delivery.…Senior Flutter Developer with 5 years of experience delivering production-grade mobile applications for startups and commercial clients. I architect scalable solutions, own end-to-end product delivery, and work closely with product, design, and engineering teams to turn requirements into reliable app experiences. I focus on clean architecture, CI/CD, testing, performance optimization, and measurable product impact (analytics, retention, and reduced support load). Recently, I’ve also contributed to Angular development to support simultaneous web and mobile feature delivery.

Available to hire

Senior Flutter Developer with 5 years of experience delivering production-grade mobile applications for startups and commercial clients. I architect scalable solutions, own end-to-end product delivery, and work closely with product, design, and engineering teams to turn requirements into reliable app experiences.

I focus on clean architecture, CI/CD, testing, performance optimization, and measurable product impact (analytics, retention, and reduced support load). Recently, I’ve also contributed to Angular development to support simultaneous web and mobile feature delivery.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

Hungarian

Fluent

English

Advanced

Serbian

Intermediate

Work Experience

Flutter / Angular Developer at RentBen Kft.

March 1, 2024 - Present

Partnered with CEO, CTO, designers, and engineers to shape product strategy and deliver high-impact marketplace features for a Flutter application (64k+ downloads). Led market research and redesigned the customer support experience, reducing support requests by 80% and securing CEO approval. Designed and implemented Firebase Analytics with custom business events and built personalized push notifications that increased user retention by 35%. Refactored and modernized the app with Clean Architecture and BLoC, including a full UI redesign and modern animations, improving maintainability and lowering frontend-related defects. Expanded into Angular development to enable parallel web and mobile feature delivery, reducing feature delivery time by 40%.

Flutter Developer

March 1, 2024 - Present

Core startup team member focused on market research, UI/UX integration, and product planning. Managed full app lifecycles using Jira and GitLab CI/CD, independently handling App Store and Play Console releases. Maintained a robust BLoC architecture while integrating WebSockets, Google Maps, custom calendar, Viva & SimplePay payments, and Firebase push notifications. Increased development speed using AI tooling (Cursor) since August 2025.

Android Developer (external) at 4D Soft Kft.

August 1, 2023 - September 1, 2023

Modernized the Hungarian Post Office internal system by migrating legacy Visual Basic to modern Kotlin.

Flutter Developer at Zengo Kft.

February 1, 2022 - March 1, 2024

Owned end-to-end delivery of 10+ Flutter apps for museums, visitor centers, kiosks, and commercial clients, including 7 production releases to Google Play and the App Store. Engineered 10 reusable Flutter packages, reducing development time by 30% and standardizing architecture across projects. Optimized memory management in the VeneoSys application, eliminating memory-related crashes and achieving 99.9%+ crash-free sessions. Modernized the Hungarian Post Office internal Android system by migrating business-critical functionality from legacy Visual Basic to Kotlin. Reduced onboarding time by 30% by mentoring a junior developer and running structured code reviews.

Sole Developer (Flutter / Angular)

February 1, 2022 - March 1, 2024

Managed end-to-end lifecycles for 7 production Android and iOS applications. Architected the Kisokos app using BLoC and integrated Barion In-App Purchases, custom animations, maps, and a simulated chatbot. Built a scalable ecosystem of reusable packages and offline-first SQLite architectures for museum and kiosk hardware. Acted as an external Android developer for 4D Soft Kft to modernize the Hungarian Post Office internal system, migrating legacy Visual Basic to modern Kotlin.

Flutter Developer Intern at ICB Tech d.o.o

March 1, 2021 - May 1, 2021

Built a thesis project Flutter app for AI image-based van type recognition, capable of detecting and classifying four van types from images using a custom-trained AI model (1,300 hand-annotated images). Implemented the complete development cycle using BLoC and Clean Architecture, integrating a Firebase backend and supporting offline detection with the custom model.

Flutter Developer (trainee) at ICB Tech d.o.o

March 1, 2021 - May 1, 2021