Available to hire
I’m COSMIN Sergiu - Dorian, a software engineer with broad knowledge of programming, software lifecycle and data management. I specialize in cross-platform mobile development using Xamarin/.NET MAUI, Xamarin.Android, Xamarin.iOS, and Flutter, alongside desktop apps with WPF and .NET. I enjoy applying MVVM, Repository pattern, IoC, and SOLID principles to solve business problems.
I’m looking to collaborate with other professionals on Xamarin/MAUI projects and native mobile development, while exploring architecture roles. I value SCRUM teamwork, clear communication, and a strong focus on code quality and testing to deliver maintainable, scalable software.
Language
English
Fluent
French
Intermediate
Portuguese
Intermediate
Japanese
Beginner
Work Experience
Senior Mobile Developer Consultant at Elecosoft
January 1, 2024 - January 1, 2025Developed from scratch a .NET MAUI mobile application (ShireSystem Mobile PRO) to expose the CMMS platform on Android and iOS. Implemented the appliance/asset communication layer, REST API and WebSocket integration, and contributed to architecture decisions for multi‑platform deployment.
Mobile Tech Lead / Architect Consultant at Miele
January 1, 2022 - PresentOverseeing architectural decisions for all domestic appliances modules (Dishwashers, Laundry Machines, Ovens, Hobs, Hoods, etc.) in the mobile application, with focus on appliance-to-cloud communication and migration to .NET MAUI.
Mobile Developer Consultant at Edenred Belgium
January 1, 2022 - January 1, 2024Maintained a Xamarin Native (Android & iOS) mobile application used to check food cards and stamps for Belgium and Luxembourg and oversaw its migration to the Flutter framework.
Mobile Tech Lead at Miele
January 1, 2019 - January 1, 2022Led architectural decisions for Dishwasher, Refrigeration and Laundry Care modules developed with Xamarin.Forms and migrated to .NET MAUI.
Senior Mobile App Developer in Xamarin at Miele
January 1, 2016 - January 1, 2019Worked with Xamarin Native (Android and iOS) on the Miele mobile app to control appliances like Ovens, Washing Machines and Dishwashers, focusing on MVVM and cross‑platform strategies.
Desktop Developer in WPF .NET 4.5 and App Developer in Xamarin at RoSoftLab
January 1, 2012 - January 1, 2016Senior developer on a WPF Windows desktop app that consolidates multiple sensor data streams (heartrate, video) for analysis in a unified hub.
Web Developer in ASP.NET 3.5 with C# and Desktop Developer in C# with WPF .NET 4.0 at Aim4Solutions
January 1, 2009 - January 1, 2012Tech Lead of the ASP.NET WebForms team and later WPF team, delivering UI for dynamic automatic weighing systems.
Web Developer in ASP.NET 2.0 with C# at Euro Systems Development
January 1, 2007 - January 1, 2009Developed interactive CRUD websites for large corporate clients using ASP.NET WebForms.
Education
Master's degree at Transilvania University of Brasov, Information Technology Faculty – Modern Technologies for Software Engineering
January 1, 2020 - January 1, 2022Bachelor's degree at Titu Maiorescu University, Bucharest, Information Technology Faculty – Informatics
January 1, 2017 - January 1, 2020Bachelor's degree (Automatics and Applied IT) at Transilvania University, Brasov, Electrical Engineering and Computer Science Faculty
January 1, 2004 - January 1, 2009High School Diploma (Tehnica de Calcul) at Colegiul Tehnic „Mircea Cristea”, Brasov
January 1, 2000 - January 1, 2004Qualifications
Certificate in Computer Engineering
January 11, 2030 - June 30, 2026Certificate of Language Skills in English
January 11, 2030 - June 30, 2026Bachelor degree in Informatics Technology
January 11, 2030 - June 30, 2026Industry Experience
Software & Internet, Computers & Electronics, Professional Services
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