Reddit Inc. logo

Principal Engineer, iOS Performance

Job Overview

Location

Remote - United States

Job Type

Full-time

Category

iOS Developer

Date Posted

May 14, 2026

Full Job Description

đź“‹ Description

  • • As a Principal Engineer on Reddit's iOS Platform team, you will own the architecture of Reddit's iOS Mobile App and drive its scalability to support the next 100M+ daily active users, shaping the technical foundation for iOS development across the company.
  • • You will lead the redesign of iOS platform components to improve modularity, performance, and quality, define and execute on key user-facing performance goals (such as minimizing ANR rate, reducing app launch time, and eliminating slow/dropped frames), and improve observability through reliable telemetry and monitoring systems.
  • • You will mentor senior iOS engineers across Reddit, act as the go-to person for complex iOS architecture challenges, and foster a company-wide culture of performance by equipping engineers with the tools and skills to own product surface performance.
  • • You will champion technology selection and best practices in iOS development, influence technical direction across 200+ engineers, and work cross-functionally with design, product, and data teams to deliver exceptional user experiences while advancing your expertise in scalable mobile architecture.

🎯 Requirements

  • • 10+ years of software development experience with at least 5+ years in designing/developing iOS applications
  • • Experience influencing organizations of 200+ engineers on technical direction and best practices related to iOS
  • • Experience with modern iOS development frameworks such as Swift UI and structured Concurrency
  • • Bachelor's degree or higher in Computer Science or a related field, or equivalent technical expertise

🏖️ Benefits

  • • Comprehensive Healthcare Benefits and Income Replacement Programs
  • • 401k with Employer Match
  • • Global Benefit programs that fit your lifestyle, from workspace to professional development to caregiving support
  • • Family Planning Support
  • • Gender-Affirming Care
  • • Mental Health & Coaching Benefits
  • • Flexible Vacation & Paid Volunteer Time Off
  • • Generous Paid Parental Leave

Skills & Technologies

Swift
iOS
Mobile
Senior
Remote
Degree Required

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About Reddit Inc.

Reddit is a social media platform where users submit, vote, and comment on content organized into topic-based communities called subreddits. Founded in 2005, it offers forums for news, hobbies, advice, and discussion, enabling real-time conversations and content ranking through upvotes and downvotes. With millions of daily active users globally, Reddit hosts diverse communities moderated by volunteers, supports multimedia posts, and provides advertising and premium membership options. The platform emphasizes user anonymity, community governance, and crowdsourced information, making it a hub for niche interests, viral content, and public discourse. Reddit went public in 2024 and is headquartered in San Francisco.

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