Senior iOS Engineer

Reku; San Francisco (CA); On-site; USD 120,000 - 160,000; Full time

Job summary

A breakout consumer company in San Francisco seeks a Senior iOS Engineer to build innovative consumer applications that redefine communication and creativity. With 5+ years of experience, you will develop real-time audio and video features, collaborate closely with a talented team, and have a major impact on a rapidly growing product. Join a dynamic environment where you can shape the future of social interaction with tools designed for the next generation.

Qualifications

• 5+ years building consumer iOS applications end-to-end.
• Strong experience with Core Audio and AVFoundation for media-heavy features.
• Experience shipping and maintaining apps in the App Store.

Responsibilities

• Build fast, fluid user-facing features that redefine how people communicate and create.
• Develop real-time audio capture, playback, transformation, and sync experiences.
• Architect high-performance video rendering, playback, and real-time processing pipelines.

Skills

Expert-level Swift

UIKit

SwiftUI

Combine

Dispatch

Core Audio

AVFoundation

Consumer iOS applications

Job description

We’re building more than an app, we’re building the next consumer social phenomenon and hiring a Senior iOS Engineer to play an instrumental role in our growth.

Our product is exploding with Gen Alpha, consistently charting among the Top 30 apps globally, and already surpassing 3M+ downloads. Backed by the industry’s most iconic investors, Sequoia, Kleiner Perkins, and others, we’re moving fast and scaling even faster. What we’re creating is simple, authentic, and deeply addictive: a new way to capture and share real moments without filters, pressure, or performative feeds.

Our team comes from the best consumer companies in the world, Facebook, Snap, Tinder, Uber, and more, and we operate with the ambition, pace, and craftsmanship to build a category-defining product.

We’re early, we’re proven, and we’re growing at rocket-ship velocity. This is your chance to shape the experience millions use every day while joining a team still small enough that your fingerprints show up everywhere.

What You’ll Do

• Build fast, fluid user-facing features that redefine how people communicate and create
• Develop real-time audio capture, playback, transformation, and sync experiences
• Architect high-performance video rendering, playback, and real-time processing pipelines
• Create and optimize messaging and social interaction mechanics
• Develop viral-ready sharing, discovery, and content consumption features
• Collaborate closely with design and product to deliver delightful, high-polish mobile experiences
• Play an integral role in shaping engineering culture, quality standards, and system architecture

What You Bring

• 5+ years building consumer iOS applications end-to-end
• Expert-level Swift and deep experience with UIKit, SwiftUI, Combine, Dispatch
• Strong experience with Core Audio and AVFoundation for media-heavy features
• A track record of optimizing performance in complex, high-scale mobile environments
• Strong engineering fundamentals and experience designing clean, testable components
• Experience shipping and maintaining apps in the App Store
• Product instincts, creativity, and a passion for building expressive, user-obsessed tools

Why Join Us

• Ship features that reach millions instantly
• Build at the edge of video, audio, creativity tools, and real-time social interaction
• Have massive ownership in a breakout consumer company backed by world-class investors
• Work with a tight, experienced team that dreams big and ships even bigger
• Shape the future of how the next generation captures and shares moments