Companies Reddit Principal Engineer, iOS Performance

About the role

Reddit · Onsite
Reddit is a community of communities. It’s built on shared interests, passion, and trust, and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote, and comment on the topics they care most about. With 100,000+ active communities and approximately 126 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit www.redditinc.com.

The iOS Platform team sets the technical direction for iOS at Reddit. Our customers are primarily other engineers. It’s our job to help improve developer efficiency by providing libraries/APIs/frameworks, monitoring performance, building shared components, improving build tools, etc. In the codebase, we own the core components of the app such as the networking and caching stack. We set the direction in which the codebase builds by defining which design patterns and technologies to employ at Reddit.

This role will enable us to architect our iOS app to scale for the next 100M+ DAUs. They will help establish the right standards in iOS development and will help in improving the overall iOS development experience at Reddit. In addition, they will mentor senior iOS engineers across Reddit and will be seen as a go-to person for any challenges on iOS App architecture.

As a Principal Engineer in the iOS Platform team, you will be responsible for designing a solid foundation for our iOS application development. You will have the company-wide scope, impact, and responsibility in shaping the future of iOS development at Reddit. You will champion the technology selection, best practices in Reddit’s iOS application development. In addition, you will act as an Architect for the iOS application at Reddit.

What you’ll do

  • 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.

What we expect from you

  • 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

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 

 

#LI-Remote

 

Pay Transparency:

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.

The base salary range for this position is:
$232,500$325,500 USD

In select roles and locations, the interviews will be recorded, transcribed and summarized by artificial intelligence (AI). You will have the opportunity to opt out of recording, transcription and summarization prior to any scheduled interviews.

During the interview, we will collect the following categories of personal information: Identifiers, Professional and Employment-Related Information, Sensory Information (audio/video recording), and any other categories of personal information you choose to share with us. We will use this information to evaluate your application for employment or an independent contractor role, as applicable.  We will not sell your personal information or disclose it to any third party for their marketing purposes.  We will delete any recording of your interview promptly after making a hiring decision.  For more information about how we will handle your personal information, including our retention of it, please refer to our Candidate Privacy Policy for Potential Employees and Contractors.

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.

Ready to apply to Reddit?
Apply to Reddit

Similar jobs

Block
Principal Security Engineer
Block
⚡ Apply early Bay Area, CA, United States of... Onsite $319,000–$478,600
● New 👁 Seen ✓ Applied 5h ago
CoreWeave
Principal Software Engineer, Developer Experience
CoreWeave
⚡ Apply early Livingston, NJ / New York, NY... Onsite $227,000–$303,000
● New 👁 Seen ✓ Applied 10h ago
Unity Technologies
Principal Forward Deployed Engineer
Unity Technologies
⚡ Apply early San Francisco, CA, USA Onsite $179,500–$269,300
● New 👁 Seen ✓ Applied 22h ago
Unity Technologies
Principal Engineer, Unity Rewards
Unity Technologies
⚡ Apply early San Francisco, CA, USA Onsite $227,900–$340,000
● New 👁 Seen ✓ Applied 1d ago
CoreWeave
Principal Operational Readiness Engineer
CoreWeave
⚡ Apply early Livingston, NJ / New York, NY... Onsite $198,000–$264,000
● New 👁 Seen ✓ Applied 1d ago
Crusoe
Principal Software Engineer, Crusoe Cloud
Crusoe
⚡ Apply early San Francisco, CA - US Onsite $256,000–$320,000
● New 👁 Seen ✓ Applied 4d ago
SA
Principal Solutions Engineer, Enterprise
Scale AI
⚡ Apply early New York, NY; San Francisco, C... Onsite $180,000–$225,000
● New 👁 Seen ✓ Applied 5d ago
Gusto, Inc.
Principal Software Engineer - Pay Group Engineering
Gusto, Inc.
⚡ Apply early Denver, CO;San Francisco, CA;N... Onsite $215,000–$215,000
● New 👁 Seen ✓ Applied 5d ago
Discord
Principal Software Engineer - Infrastructure
Discord
⚡ Apply early San Francisco Bay Area Onsite
● New 👁 Seen ✓ Applied 6d ago

Sign up for suggestions tailored to the jobs you open and the searches you save.

Apply now
🤖

Whoa — hold up

JobsRadar was built for real people having a rough time in their job search — not for automated requests. You're clicking way too fast and you're now temporarily blocked.

Come back later. If you're genuinely job hunting, we've got your back — just act like a human.

Catch your next role the second it’s posted.

Create a free account and we’ll watch the boards for you — the instant a job matches your search, it lands in your inbox or Telegram. No digging, no refreshing.

Create free account

Free forever · takes 30 seconds · already have one?

Get the worldwide-remote edge.

Join our Telegram channel for the stuff that helps you land the role — salary benchmarks, the weekly market pulse, and new-feature drops. No spam, just signal.

Join the channel — it's free