Principal Engineer, iOS Performance

Quick summary

Work type: On-site
Location: Chicago, IL
Salary: $232,500–$325,500 / yr
Posted: today

Market check

Salary context

Above market

How this pay compares to similar roles

Similar $211k

This role $279k

$143k most similar roles pay here $345k

This role pays more than 88% of similar roles. Most pay $172,000–$249,812 — the shaded band above. At the midpoint, this role pays about $279k versus about $211k for comparable roles.

Based on 240 similar postings.

Employer

About Reddit

Reddit is a social news aggregation and discussion platform where users share content, vote on posts, and engage in community conversations across thousands of interest-based forums called subreddits.

Reddit currently has 72 open roles on FindRole.

Listed pay typically runs $217,000–$303,900 across 66 roles with salary data.

Most-posted roles

View all roles at Reddit

At a glance

TL;DR · Principal Engineer, iOS Performance

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The Principal Engineer role on the iOS Platform team at Reddit involves architecting and scaling the company’s iOS application to support future growth towards 100M+ Daily Active Users. This position requires deep expertise in mobile app development, particularly with Swift UI and structured concurrency, to establish best practices and mentor senior engineers across Reddit. You will lead the redesign of the iOS platform to enhance modularity, performance, and quality while driving a culture focused on user experience improvements through robust monitoring and telemetry systems. Ideal candidates have over 10 years of software development experience, including extensive work with iOS applications, and can influence technical direction within large engineering teams.

Skills

Swift UIKit CoreData CocoaPods Xcode CI/CD APNs Firebase GraphQL RESTful APIs Docker Kubernetes AWS PostgreSQL Git JIRA Swagger JSON UI Testing Mocking frameworks

What you'll do

Own the architecture of Reddit’s iOS Mobile App to scale for 100M+ DAUs.
Identify and lead redesigns in iOS app architecture to enhance modularity, performance, and quality.
Define and execute on key user-facing performance goals like minimizing ANR rate and reducing app launch time.
Improve observability by establishing reliable telemetry, monitoring, and guardrails for critical performance metrics.
Mentor senior iOS engineers across Reddit and drive a culture of performance excellence.

What we're looking for

10+ years of software development experience with at least 5 years in designing/developing iOS applications.
Deep understanding of building mobile applications at scale and influencing large organizations on technical direction.
Experience with modern iOS frameworks such as Swift UI and structured concurrency.
Proven ability to mentor senior iOS engineers and drive a culture of performance across the company.
Bachelor's degree or higher in Computer Science or equivalent technical expertise.

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