3 months ago

Principal Engineer, iOS Performance

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Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI

Last checked: 54 minutes agoStatus: Live

Job Summary

Lead architectural direction for Reddit's iOS platform to scale to 100M+ DAUs, shaping iOS app architecture, improving performance, and mentoring engineers. Establish standards, drive cross-functional collaboration, and ensure high-quality, scalable iOS development with measurable performance improvements (ANR, launch time, frame drops). Be the go-to expert on iOS architecture across Reddit.

Location: San Francisco

Workplace: Remote

Employment Type: Full time

Job Function: Communications, PR & Community

Key Responsibilities

•Own the architecture of Reddit’s iOS Mobile App and ensure it scales to 100M+ DAUs, guiding design decisions to keep the mobile apps best-in-class.
•Identify gaps in the current iOS architecture and lead a platform redesign to improve modularity, performance, and quality.
•Define, measure, and execute on key performance goals such as minimizing ANR, reducing launch time, and eliminating slow/dropped frames.
•Improve observability and data quality by establishing telemetry, monitoring, and guardrails across performance metrics.
•Mentor iOS engineers across the company and serve as the go-to person for complex iOS development challenges.

Pay and Benefits

Salary: USD 232,500 - 325,500 annually

Equity and Bonus:Equity

Perks:Health Insurance401kPaid Leave

Key Requirements

•10+ years of software development with at least 5+ years designing/developing iOS applications.
•Experience influencing larger (200+ engineers) organizations on technical direction and best practices for iOS.
•Experience with modern iOS development frameworks such as SwiftUI and structured Concurrency.
•Bachelor's degree or higher in Computer Science or a related field, or equivalent technical expertise.
•Ability to work with cross-functional teams (design, product, data) to deliver great user experiences.

Experience:10+ years

Education:Bachelor's

Skills:LeadershipCommunicationMentorshipProblem-solvingCollaboration

Languages:English

Tech Stack:SwiftSwiftUIStructured ConcurrencyIOSNetworkingCachingTelemetryMonitoringXcode

Company Brief

Operates Reddit, a large online community and discussion platform where users submit content, comment, and vote across topic-based communities (subreddits); monetizes via advertising, premium subscriptions, and awards.

Industry: Digital Media

Company Size: Enterprise (1,001+ employees)

Growth: Public Company

Valuation: Public Company (Market Cap in USD)

Funding: IPO / Publicly Listed

Headquarters: San Francisco, United States

Founded: 2005

Website LinkedIn

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