Mid-Level .NET Developer (Device Services & Hardware Integration)

Key Responsibilities ● Backend Service Development: Build, update, and maintain backend services, background tasks, and Windows Services using .NET 8 / .NET Core and C#. ● Hardware & Peripheral Integration: Assist in integrating vendor-specific SDKs, native driver APIs, and hardware libraries to communicate with physical peripherals. ● System Refactoring: Refactor legacy backend components into modular, maintainable, and testable service abstractions. ● Error Handling & State Logic: Implement robust state management, exception handling, and recovery routines for physical device operations. ● Code Quality & Testing: Write unit tests for hardware abstraction layers, participate in peer code reviews, and support automated test pipelines. ● Agile Collaboration: Participate in daily standups, technical estimation sessions, and sprint planning within a collaborative engineering environment. Required Qualifications & Technical Skills ● Experience: 3+ years of professional backend development experience with C# and the .NET ecosystem (.NET Core / .NET 8 / .NET Framework). ● Hardware Integration: Previous experience or strong interest in interfacing software with physical devices, hardware peripherals, or external APIs/SDKs. ● Backend Fundamentals: Solid understanding of multithreading, asynchronous programming (async/await), dependency injection, and RESTful API architecture. ● Database & Tooling: Working knowledge of SQL Server, version control with Git, and debugging tools within Visual Studio. Core Competencies & Cultural Fit ● Self-Motivated Learner: Eager to expand technical skills, adapt to hybrid tech stacks, and learn from senior engineers. ● Strong Individual Contributor: Able to take assigned tasks, ask the right clarifying questions, and execute independently with minimal oversight. ● Reliable Team Player: Values collaboration, open communication, and constructive feedback during code reviews. ● Remote-Ready Communicator: Clear, prompt communication across chat tools (Slack, Teams) and project tracking systems (Jira, Azure DevOps). Preferred / "Nice-to-Have" Qualifications ● Practical experience working with Point-of-Sale (POS) hardware, payment processing peripherals, or self-service terminal systems. ● Exposure to serial communication (RS-232/COM), USB, or socket-based networking protocols. ● Familiarity with PCI compliance principles or secure data handling standards. ● AI-Driven Productivity: Experience leveraging AI-assisted development tools (e.g., GitHub Copilot, Cursor, Claude Code) to write unit tests, generate mock peripheral interfaces, and debug backend logic faster.