Senior Software Engineer

About Handtevy Handtevy is a leading provider of pediatric and adult emergency care solutions. Our SaaS platform is used by hospitals, EMS agencies, and fire departments to deliver evidence-based medication dosing, standardized clinical protocols, and real-time coordination tools for emergency medical services. Our software is used in ambulances and emergency departments every day, in moments where clarity, speed, and reliability are not optional. About the Role We're looking for a senior software engineer to own the design and delivery of our API integration platform. This is the layer that connects Handtevy to other medical systems, including ePCR, EHR, narcotic and blood tracking systems, and more. You'll be the technical lead on how third-party systems authenticate, consume, and rely on our APIs, with real ownership in architecture decisions as well as implementation. This is critical work with real impact! What You'll Do Design and build bi-directional integrations between Handtevy and third-party platforms. Design RESTful APIs with clear versioning, pagination, and idempotency guarantees, documented via OpenAPI/Swagger Implement and harden authentication and authorization flows, including API key management, for third-party access Build resilient, observable webhook and event-driven integration patterns Own reliability, testing, and documentation standards for the integration layer, including security controls Partner directly with integration vendors and internal produ