Sr Software Engineer - Full Stack/Mobile

Welcome to Resideo, where we're transforming homes into intelligent, efficient, and secure living spaces through the power of IoT-connected devices. As a Full Stack Senior Software Engineer, you will be at the core of our mission—building robust, scalable Mobile and Web app flows as well as the corresponding API endpoints to support them, with the focus on creating a delightful experience for the customer.You will work across a modern software stack to ingest, process, and serve high-volume telemetry from HVAC, security, and energy systems. You will partner with software engineers, data scientists, product managers, and platform engineers to drive the implementation of hardware installation, data visualization and real-time alerting. This is a high-impact role for a hands-on engineer who thrives in fast-moving environments and possesses strong software design and coding skills. KEY RESPONSIBILITIES:Build and maintain scalable, reliable Mobile and Web applications to support connected HVAC and smart home devices.Collaborate with cloud, product, and AI/ML teams to deliver software capabilities that support new features and customer experiences.Contribute to platform improvements and help establish engineering patterns, templates, and documentation.YOU MUST HAVE:5+ years of experience in software engineering with a focus on UX or mobile app development.Strong understanding of .NET, C# and networking.Strong skills in at least one framework (e.g. Xamarin/MAUI or Flutter, etc…) developing for both iOS and Android.Familiarity with ReactJSUnderstanding of database design and utilization.Hands-on experience with product launch and go to market strategies.WE VALUEExposure to connected devices or IoT-related systems.Ability to traverse the entire software stack.Knowledge of HVAC, smart home, or industrial systems a plus.Experience working with Infrastructure-as-Code (e.g., Terraform), CI/CD and GitHub actions.A pragmatic mindset—balancing engineering excellence with speed and business impact.A strong sense of ownership and pride in shipping high-quality, maintainable systems. WHAT'S IN IT FOR YOUHigh Impact: Own and deliver critical platform initiatives that power millions of connected devices worldwideTechnical Leadership: Lead real projects and shape architecture, not just contribute codeEnd-to-End Ownership: See your work through from concept to production and long-term operationGrowth Path: Clear runway toward Staff/Principal engineering or platform leadership rolesModern Stack: Azure cloud, event-driven systems, large-scale telemetry, Kubernetes, and modern DevOps practicesWork in a Hybrid setting (3 days in office, 2 days remote)Competitive Compensation & Benefits: Including health coverage, retirement plans, paid time off, and flexible work arrangementsThis position is not eligible for US sponsorship. #LI-LH1#LI-HybridResideo is a global leader in smart home and building solutions, with trusted brands including Honeywell Home, First Alert, and Resideo helping people feel more comfortable, secure, connected, and in control every day. Our products and technologies are found in more than 150 million homes and businesses worldwide. From intelligent climate solutions to security, sensing, water, and connected home technologies, Resideo develops and manufactures products designed to simplify everyday life and help protect what matters most. Our global teams span engineering, manufacturing, software, product management, supply chain, customer experience, and more — all working together to shape the future of connected living through innovation, quality, and meaningful real-world impact. At Resideo, our teams help create products and experiences that make everyday life more comfortable, secure, and connected for millions around the world. Learn more at .You can find out more about how the talent community works here: Resideo Talent Community Terms. Our recruitment privacy notice Resideo -Recruitment Privacy Notice - Dec 16 2022 describes in more detail how we process your personal data and how you can exercise your personal data rights.If a disability prevents you from applying for a job through our website, request assistance here.Full timePosting Date: 2026-08-25