Senior iOS Software Engineer, Media Foundation

The Media Foundation’s mission is simple: Delivering seamless, high-performance media experiences that meet and exceed industry standards, ensuring unparalleled engagement across all platforms at Reddit. Media is the most engaging medium on Reddit, whether it’s for posts, comments, or ads. This is a pivotal role within the Media Foundation team, essential to shaping Reddit's media experience across all devices. We are seeking a stellar engineer with a deep understanding of scalable media solutions who can drive innovation, deliver top-tier video experiences to our users, and guide other teams in seamlessly integrating with our video API. This role not only involves building robust media capabilities but also contributing to the growth and strength of our media engineering team as Reddit continues to scale.

This is a high impact role where you will drive related technical & product strategy, operations, architecture, and execution for one of the largest sites in the world.

What You’ll Do:

• Work cross-functionally with product, design, and other engineering counterparts to execute on product and business strategy and build novel products and features that our users will love.
• Contribute to the full development cycle: technical design, development, test, experimentation, analysis, and launch. You’ll be reviewing code and design docs, giving feedback on product specs and mocks.
• Work with a team of thoughtful, fast-moving, and motivated engineers. Set and define standards that improve developer workflows, recommend best practices, and help coach and mentor engineers on the team to further their professional development.
• Continuously learn and improve your technical and non-technical abilities.

What We Are Looking For:

• At least 3+ years of experience as a software engineer developing user-facing iOS mobile native applications at scale, using Swift.
• Software development experience in one or more general-purpose programming languages; Java, Python, Go, Rust, C++.
• Additional knowledge around GraphQL, REST, HTTP basics, and the ability to design maintainable APIs is a plus.
• Strong organizational skills, the ability to prioritize tasks and to deliver projects on schedule.
• BS degree in Computer Science, a similar technical field of study or equivalent practical experience.
• Entrepreneurial spirit. You are self-directed, innovative, and biased towards action in fast-paced environments. You love to build new things and thrive in ambiguity and even failure.
• Excellent communication skills. You collaborate effectively with teams in a fully remote environment and discuss complex topics with technical and non-technical audiences.

What Will Set You Apart:

• In-depth knowledge of AVFoundation for video and audio playback, asset management, streaming, editing, and exporting capabilities.
• Strong understanding of Core Media for timing and synchronization and Core Video for buffer handling, essential for custom playback and real-time video manipulation.
• Familiarity with HTTP Live Streaming (HLS), MPEG-DASH, MP4, and other streaming protocols, as well as working knowledge of streaming frameworks and CDN integration for optimized video delivery.
• Knowledge of video encoding standards (H.264, H.265/HEVC, VP9, AV1) and understanding codec-specific trade-offs in quality and performance.
• Familiarity with VideoToolbox for hardware-accelerated video encoding and decoding, optimizing for real-time playback and streaming performance.
• Familiarity with reactive frameworks (RxSwift, Combine)
• Experienced with SQL and BigQuery

Benefits:

• Comprehensive Healthcare Benefits

• 401k Matching 

• Workspace benefits for your home office

• Personal & Professional development funds

• Family Planning Support

• Flexible Vacation & Reddit Global Wellness Days

• 4+ months paid Parental Leave  

• Paid Volunteer time off