The world’s most popular audio streaming subscription service is looking for a Senior iOS Engineer to join the band in a consultant assignment. The client has transformed music listening forever when launched in 2008.

Period: ASAP to 2026-05-09 (full-time), with a possibility of extension.

About the role

Our client’s Platform Mission creates the technology that enables the company to scale globally, experiment rapidly, and build for a billion users. From client connectivity to infrastructure, we amplify innovation, productivity, and quality across all our client’s engineering teams.

This is a chance to work on our client’s core connectivity foundation – improving the reliability, latency, and efficiency of how every client app talks to backend systems. You’ll join early in the formation of a new squad, shaping the technical direction and helping Core Infra build out mobile expertise.

As a senior consultant of the new Connectivity squad, you’d be expected to:

• Help shape the technical direction for our client’s client-to-backend networking stack.
• Influence Core Infra’s mobile infrastructure capabilities and long-term architecture.
• Work on systems that directly impact app reliability, startup time, latency, and user experience across platforms.

What you'll do

• Refactor and modularize existing SDK components (iOS and C++), defining interfaces, ownership boundaries, testing strategies, and build/CI hygiene.
• Design robust interfaces and ownership boundaries across mobile and backend systems.
• Implement and maintain metrics and telemetry to enable end-to-end debugging and observability.
• Collaborate with other engineers, PM, EM and partner teams to align on technical priorities and squad goals.
• Contribute to long-term architectural decisions for the Connectivity SDK, sharing knowledge and establishing best practices for mobile infrastructure within Core Infra.

Who you are

• Refactor and modularize existing SDK components (iOS and C++), defining interfaces, ownership boundaries, testing strategies, and build/CI hygiene.
• Design robust interfaces and ownership boundaries across mobile and backend systems.
• Implement and maintain metrics and telemetry to enable end-to-end debugging and observability.
• Collaborate with other engineers, PM, EM and partner teams to align on technical priorities and squad goals.
• Contribute to long-term architectural decisions for the Connectivity SDK, sharing knowledge and establishing best practices for mobile infrastructure within Core Infra.

We are Market Partner

Market Partner is proud to be an equal opportunity employer. You are welcome to our community regardless of who you are, no matter where you come from, or what you look like. We apply ongoing selection and may fill the position as soon as we find the right candidate.