We are looking for a highly capable Senior iOS Engineer to join our Powered team and take ownership of our iOS SDKs: the CQoE SDK, which telecom carriers and partners embed directly into their own apps to passively measure real-world network quality, and the Speedtest SDK, the core measurement library that powers every Speedtest client.
You will be responsible for implementing and maintaining features that perform a wide variety of network measurements on millions of iOS devices. In our classic SDKs, much of this measurement logic lives in a shared C++ library used across Android, iOS, and embedded target, so you'll have an opportunity to work across the Swift, Objective-C and C++ boundary. In our new SDKs, most of this logic lives in a Kotlin Multiplatform project, so you'll have the opportunity to work with the emerging technologies that power our operations.
You have experience with the iOS platform, but are interested in both Android and iOS as well as embedded environments. You want to make a better Internet for everyone.



If you already use Ookla's tools to check your broadband or mobile data performance, now you have a chance to be a part of the team that produces them.
Design, implement, and maintain network measurement features in the CQoE and Speedtest iOS SDKs, consumed by external carrier partners, third-party app developers, and internal client apps. This includes implementation, testing, documentation, deployment, and development support
Design, implement, and maintain network measurement features in our new Speedtest iOS SDKs, consumed by enterprise customers. This includes implementation, testing, documentation, deployment, and development support
Work on the shared C++ measurement engine used across Android, iOS, and embedded targets by debugging native code and, over time, contributing to and maintaining it directly
Bring AI-assisted tooling into coding, QA, and data analysis where it genuinely earns its place, with clear guardrails around safety, p

📌 Senior iOS Software Engineer (Andalucía)
🏢 Ziff Davis
📍 Andalucía