Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

I’m a mobile and end-to-end software engineer who builds production apps from architecture decisions through release, with a strong Flutter focus and broad experience across Android, iOS, and backend services. I enjoy long-term contracting and collaborating closely with designers and product teams to turn requirements into reliable, user-friendly features. Over 8+ years, I’ve delivered multiple app launches and continuous improvements—streaming, payments, booking flows, real-time chat, maps/place discovery, and performance-oriented platform work—while also maintaining production systems and onboarding team members. I’m fluent in English, have solid German basics, and I like owning components end-to-end: from deep-link/navigation reliability to integration of analytics, maps, and third-party SDKs.…I’m a mobile and end-to-end software engineer who builds production apps from architecture decisions through release, with a strong Flutter focus and broad experience across Android, iOS, and backend services. I enjoy long-term contracting and collaborating closely with designers and product teams to turn requirements into reliable, user-friendly features. Over 8+ years, I’ve delivered multiple app launches and continuous improvements—streaming, payments, booking flows, real-time chat, maps/place discovery, and performance-oriented platform work—while also maintaining production systems and onboarding team members. I’m fluent in English, have solid German basics, and I like owning components end-to-end: from deep-link/navigation reliability to integration of analytics, maps, and third-party SDKs.

Răzvan Tamaz

App Developer, Developer, Software Engineer, +3





I’m a mobile and end-to-end software engineer who builds production apps from architecture decisions through release, with a strong Flutter focus and broad experience across Android, iOS, and backend services. I enjoy long-term contracting and collaborating closely with designers and product teams to turn requirements into reliable, user-friendly features. Over 8+ years, I’ve delivered multiple app launches and continuous improvements—streaming, payments, booking flows, real-time chat, maps/place discovery, and performance-oriented platform work—while also maintaining production systems and onboarding team members. I’m fluent in English, have solid German basics, and I like owning components end-to-end: from deep-link/navigation reliability to integration of analytics, maps, and third-party SDKs.…I’m a mobile and end-to-end software engineer who builds production apps from architecture decisions through release, with a strong Flutter focus and broad experience across Android, iOS, and backend services. I enjoy long-term contracting and collaborating closely with designers and product teams to turn requirements into reliable, user-friendly features. Over 8+ years, I’ve delivered multiple app launches and continuous improvements—streaming, payments, booking flows, real-time chat, maps/place discovery, and performance-oriented platform work—while also maintaining production systems and onboarding team members. I’m fluent in English, have solid German basics, and I like owning components end-to-end: from deep-link/navigation reliability to integration of analytics, maps, and third-party SDKs.

Available to hire

I’m a mobile and end-to-end software engineer who builds production apps from architecture decisions through release, with a strong Flutter focus and broad experience across Android, iOS, and backend services. I enjoy long-term contracting and collaborating closely with designers and product teams to turn requirements into reliable, user-friendly features.

Over 8+ years, I’ve delivered multiple app launches and continuous improvements—streaming, payments, booking flows, real-time chat, maps/place discovery, and performance-oriented platform work—while also maintaining production systems and onboarding team members. I’m fluent in English, have solid German basics, and I like owning components end-to-end: from deep-link/navigation reliability to integration of analytics, maps, and third-party SDKs.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

German

Beginner

Work Experience

Flutter and Android Engineer (Embedded Contractor) at TMZ Software (contract)

June 1, 2025 - April 2, 2026

Built and shipped Flutter production mobile app features end-to-end, including CMS-driven screen generation, daily itinerary features with Mapbox/Calendar UI and real-time integrations, and place discovery/search with category filtering, pagination, and direct trip linking. Implemented components for story-like experiences, improving deep-linking and navigation reliability for users arriving from external sources. Stack included Kotlin/Room/Jetpack Compose/Dagger/Coroutines/LiveData and many integrations such as CometChat SDK for in-app messaging, Mapbox for maps, and Swift linking where needed. Supervised and reviewed team contributions, worked with designers for correct UI/UX implementation, and handled event and foundations for platform linking.

Freelance Mobile Engineer at TMT (via Toptal)

February 1, 2025 - June 30, 2025

Reworked an existing codebase for bug fixes and new features, delivering trip and reservation management including editing conditions, trip duplication rules, date/time handling, and passenger management. Built remotely-configured, paywall-driven navigation flows so business-side feature gating could occur without app redeployments. Managed multiple App Store/Play Store version releases, designed and implemented new screens/features during the engagement, and ensured maintainable behavior across Android and iOS using Flutter and Firebase-backed architecture.

Mobile Engineer (Flutter) at AltoT (contract/freelance)

December 5, 2024 - March 31, 2025

Took an iOS-only legacy app and rebuilt it as a Flutter app, covering end-to-end meeting/booking flows across multiple steps (type selection, activity picker, date/time, nearby discovery, review, and Stripe checkout). Integrated live video streaming/chat via SDKs and implemented Stripe payment processing with vouchers supporting bookings and profile sections. Delivered new screens and features aligned with Figma designs and ensured reliable cross-platform behavior using Flutter/Dart and supporting architecture and state management (BLoC, Hive, GetStream/VoIP).

Software Engineer (Flutter/Dart) at ControlF5 (Informataro)

November 1, 2021 - May 31, 2023

Built a production Flutter trading app from scratch as a sole developer, delivering portfolio views, P&L visualization, market discovery, watchlists, order management, transaction export, and price alerts. Implemented real-time updates using authenticated sockets and user-specific channels. Created custom UI components based on Figma designs, implementing gradient/data-graph UI elements and reliable production-grade behavior. After launch, handled maintenance and added new features, including implementing paywall and subscription logic with version tracking and integrating AI-assisted search that returned AI-generated responses alongside relevant news results.

Mobile Developer at AltoT (legacy product work, plus other roles shown in resume timeline)

January 2, 2018 - January 1, 2021

Rebuilt and developed iOS/Android applications using Xamarin and Flutter (and native where applicable), focusing on implementing and testing new features and publishing releases to Google Play and the App Store. Coordinated closely with clients for feature implementation and releases. Also contributed to internal processes and team collaboration for delivering mobile products across different domains.

Education

Bachelor degree in Computer Science at West University of Timisoara

January 11, 2030 - September 25, 2026

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Education, Healthcare, Financial Services, Travel & Hospitality, Media & Entertainment, Computers & Electronics, Professional Services