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David Toth

@davidtoth1

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Senior Flutter developer at Yettel.Hungary, contributing to a telecom app used by millions.

Hungary

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At Yettel.Hungary, I worked on a large-scale telecom application used by millions of users, first as a Senior Flutter Developer and later as a Lead Mobile Developer.

As a Contractor, I worked across projects as a Lead / Senior Mobile Developer and Mobile Architect, designing scalable mobile applications and building full-stack solutions with Flutter and Dart.

At Julius-K9®, I worked on a smart IoT-based dog harness project designed to help owners better understand their dogs through AI-driven insights. I also worked on client projects at FOM DIGITAL, focusing on scalable mobile architectures and guiding development teams.

Experience

Work history, roles, and key accomplishments

Current

Senior Flutter Mobile Application Developer

Current

Contractor

Jan 2021 - Present (5 years 9 months)

Worked as a Lead / Senior Mobile Developer and Mobile Architect across multiple projects, focusing on designing scalable mobile applications and building full-stack solutions using Flutter and Dart.

Flutter Dart Clean Architecture BLoC Mobile Architecture Backend Services

Current

Senior Flutter Mobile Application Developer

Current

Astron Informatics Ltd.

Jan 2021 - Present (5 years 9 months)

Worked as a Senior Flutter Mobile Application Developer at Astron Informatics Ltd.

Lead Flutter Mobile Application Developer

FOM DIGITAL

Jan 2025 - Jan 2026 (1 year)

Worked as a Lead Mobile Developer across multiple client projects, focusing on building scalable mobile architectures and guiding development teams.

Flutter Mobile Architecture Team Leadership

Lead Flutter Mobile Application Developer

Yettel Hungary

Jan 2021 - Jan 2025 (4 years)

Worked as a Senior Flutter Developer and later as a Lead Mobile Developer on a large-scale telecom application used by millions of users.

Flutter Dart Mobile Development Telecommunications

Flutter Mobile Application Developer

Julius-K9

Jan 2021 - Jan 2022 (1 year)

Worked as a Senior Flutter Developer on a smart IoT-based dog harness project designed to help owners better understand their dogs using AI-driven insights.

Flutter IoT AI

Education

Degrees, certifications, and relevant coursework

University of Nyíregyháza

Bachelor of Science, Software Engineering

2014 - 2018

Studied software engineering with a focus on programming, system design, and building maintainable applications, forming the foundation for mobile and scalable system development.