.NET developer (part-time, 40-60 hours/month)

We are looking for a talented .Net Developer with 3+ years of programming background to join a small but established, product-focused team that builds a mobile-first platform that bridges digital and physical technologies.  JOB REQUIREMENTS: Must have: 3+ years of commercial experience in cross-platform mobile development using C# / .NET Solid understanding of mobile app architecture patterns (MVVM, Clean Architecture) Experience integrating mobile apps with RESTful APIs and real-time communication protocols Experience working with IoT devices or hardware communication (Bluetooth, BLE, or similar protocols) Understanding of device pairing, state synchronisation, and hardware lifecycle management within mobile applications Understanding of SOLID and OOP principles English — at least Intermediate+ Nice to have: Experience with payment or booking flow integrations Experience with push notifications and background services on mobile Experience with managing Apple Certificates, Identifiers and Profile Familiarity with publishing and maintaining apps on App Store and/or Google Play KEY RESPONSIBILITIES: Adding new features to an existing solution Fixing occasional bugs and supporting users Collaborating with the team and occasionally with the client (via email) Contributing to future solution architecture PROJECT Our client is an American startup that provides its users with a fun shopping experience. The application is live, used daily across 17 + locations in the US, and communicates directly with electric vehicles on the ground - in real time. The architecture is clean and modern - no legacy baggage to wrestle with.  Stage: This is a growing startup. Project team: 1 PM, 1 QA, 1 Mobile Developer, 1 UI/ UX Designer, 1 Back-end Developer  Technical stack: C# / .NET (MAUI), Bluetooth Low Energy (BLE), RESTful APIs / JSON, Firebase , Stripe Work schedule: Part-Time (40-60 hours per month), remote INTERVIEW STAGES: Call with recruiter Technical interview with recruiter and Senior Mobile developer Recruiter - Halyna Vorona