Principal Engineer, iOS Performance

- Own the architecture of Reddit's iOS Mobile App and make it scale to the next 100M+ DAUs. Propose ideas/solutions to reach our vision of "making Reddit's Mobile Apps best-in-class."

- Identify the gaps in our current iOS App Architecture, and lead redesign of the iOS platform to improve modularity, performance, and quality.

- Define, measure, and execute on key user-facing performance goals, specifically minimizing App Not Responding (ANR) rate, reducing app launch time (Time to Interactive/TTFF), and eliminating slow/dropped frames.

- Improve observability and harden data quality for all key performance areas, including establishing reliable telemetry, monitoring, and guardrails for ANR rate, app launch time, and slow/dropped frames.

- Drive a company-wide culture of performance, ensuring that every iOS engineer at Reddit has the tools and skills needed to own the performance of their product surfaces.

- Mentor iOS developers across the company.

- Be the go-to person for developers on complex problems in iOS development.

- Deep experience-based understanding of how to build mobile applications at scale.

- You are a strategic thinker who thrives on developing a long-term technical foundation and has a passion for developing scalable, well-designed software that improves people's lives globally.

- 10+ years of Software development experience with at least 5+ years in designing/developing iOS applications.

- Experience in influencing larger (200+ engineers) organizations on technical direction/best practices related to iOS

- Experience with modern iOS development frameworks such as Swift UI and structured Concurrency.

- Passion for developing scalable, well-designed software that improves people's lives globally.

- Experience working with cross-functional teams such as design, product, data teams to deliver great user experiences.

- Bachelor's degree or higher in Computer Science or a related field, or equivalent technical expertise

- 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

# LI -Remote

This job posting may span more than one career level.

In addition to base salary, this job is eligible to receive equity in the form of restricted stock units, and depending on the position offered, it may also be eligible to receive a commission. Additionally, Reddit offers a wide range of benefits to U.S.-based employees, including medical, dental, and vision insurance, 401(k) program with employer match, generous time off for vacation, and parental leave.

To learn more, please visit https://www.redditinc.com/careers/ .

To provide greater transparency to candidates, we share base salary ranges for all US-based job postings regardless of state. We set standard base pay ranges for all roles based on function, level, and country location, benchmarked against similar stage growth companies. Final offer amounts are determined by multiple factors including, skills, depth of work experience and relevant licenses/credentials, and may vary from the amounts listed below.

$232,500 - $325,500 USD

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Reddit is proud to be an equal opportunity employer, and is committed to building a workforce representative of the diverse communities we serve. Reddit is committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. If, due to a disability, you need an accommodation during the interview process, please let your recruiter know.