Principal Software Engineer, Mobile

Cambridge Mobile Telematics (CMT) is the world's largest telematics service provider. Its mission is to make the world's roads and drivers safer. The company's AI-driven platform, Drive Well Fusion®, gathers sensor data from millions of IoT devices — including smartphones, proprietary Tags, connected vehicles, dashcams, and third‑party devices — and fuses them with contextual data to create a unified view of vehicle and driver behavior.

Auto insurers, automakers, commercial mobility companies, and the public sector use insights from CMT's platform to power risk assessment, safety, claims, and driver improvement programs. Headquartered in Cambridge, MA, with offices in Budapest, Chennai, Seattle, Tokyo, and Zagreb, CMT measures and protects tens of millions of drivers across the world every day.

CMT is looking for a collaborative, customer‑committed, and creative Principal Android Engineer who wants to join us in making roads safer by making drivers better. This is a principal‑level individual contributor role on the Android SDK team, focused on deep technical ownership, cross‑functional tech leadership, and driving the architectural direction of CMT's Android SDK platform.

• Partner with product managers to understand business directions and collaborate with product managers, technical leads and other stakeholders to develop project plans that meet business needs
• Own a significant component of the mobile technical stack at CMT
• Train, guide, and mentor other developers on proper software development procedures and methods
• Participate in the hiring process
• Cross team and service boundaries to solve technical and business problems
• Design and architect solutions that are maintainable, scalable, reliable and testable while keeping future business directions in mind
• Lead code and design reviews
• May lead project groups that are focused on a specific company objective or key result
• Improve company defined development and operational standards and processes
• Provide on‑call support during business critical emergency scenarios. Support and troubleshoot production issues as needed.
• Complete any additional tasks as they arise

• Bachelor's degree or equivalent years of experience and/or certification in a related field
• 7+ years of relevant professional experience
• Ability to do general development tasks on Linux and MacOS; fluency in a scripting language, like Python, Ruby, with the ability to learn more
• Understanding of Agile development methodologies (specifically SCRUM)
• Experience with different application architectures such as Model-View-Controller, MVVM, and VIPER
• Experience consuming and/or designing REST APIs
• Experience building, developing and delivering Android or iOS mobile applications and SDKs
• Basic understanding of end-to-end technical solutions including backend systems
• Experience with continuous deployment, and test-driven development (TDD)
• Skills required for Android developers:
• Proficient in both Java and Kotlin with a strong understanding of concurrency concepts
• Experience with Android Jet Pack libraries
• Experience with Kotlin coroutines and flows
• Familiarity with third-party Android libraries like RxJava, Dagger 2, and Retrofit
• Fluency with the Gradle build system for Android
• Skills required for iOS focused developers:
• Proficient in both Swift and Objective-C with a strong understanding of concurrency concepts
• Experience with iOS Frameworks and development using XCode
• Familiarity with third-party iOS libraries
• Fluency with cocoapods or Swift Package Manager

• Actively uses AI coding tools in development work, can critically evaluate AI-generated code for logical errors, edge cases, and security or reliability risks, and can explain and take full ownership of any code incorporated into their work.
• Previous experience developing and maintaining SDKs or mobile platforms consumed by external developers, including managing API versioning, backward compatibility, and developer ergonomics.
• Experience with mobile observability practices, including custom logging pipelines, crash reporting, and metrics collection with low overhead on devices.
• Experience with background processing and battery…