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Principal Ios Engineer Jobs (NOW HIRING)

They are seeking a Principal Engineer for their iOS Platform team to architect and improve the iOS app for scalability and performance, while mentoring other engineers and setting development ...

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 ...

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 ...

Staff iOS Engineer (Connectivity)

Boston, MA · On-site

$56.25 - $77.50/hr

The Staff iOS Engineer will design and implement software for seamless communication between WHOOP ... design principals to build scalable, modular, testable software. • Experience debugging and ...

Staff iOS Engineer (Connectivity)

Boston, MA · On-site

$56.25 - $77.50/hr

The Staff iOS Engineer will design and implement software that enables WHOOP's wearable sensors to ... design principals to build scalable, modular, testable software. • Experience debugging and ...

Staff iOS Engineer (Connectivity)

Boston, MA · On-site

$56.25 - $77.50/hr

The Staff iOS Engineer will design and implement software that connects WHOOP's hardware to the iOS ... design principals to build scalable, modular, testable software. • Experience debugging and ...

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Principal Ios Engineer information

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$74K

$147.2K

$212.5K

How much do principal ios engineer jobs pay per year?

As of Jun 9, 2026, the average yearly pay for principal ios engineer in the United States is $147,220.00, according to ZipRecruiter salary data. Most workers in this role earn between $118,500.00 and $173,000.00 per year, depending on experience, location, and employer.

How does a Principal iOS Engineer typically collaborate with cross-functional teams during product development?

A Principal iOS Engineer often works closely with product managers, designers, backend engineers, and QA specialists throughout the development lifecycle. They provide technical leadership by setting mobile app architecture standards, reviewing code, and ensuring best practices are followed. Regular participation in sprint planning, design reviews, and stakeholder meetings is common, allowing them to align technical solutions with business goals and mentor junior developers. Their collaborative approach ensures the delivery of high-quality, scalable iOS applications.

What is a Principal iOS Engineer?

A Principal iOS Engineer is a senior-level software engineer who specializes in designing, developing, and maintaining high-quality applications for Apple's iOS platform. They typically lead technical decisions, set coding standards, mentor junior engineers, and collaborate with cross-functional teams to deliver robust mobile solutions. In addition, they often contribute to architectural planning, performance optimization, and ensure best practices are followed throughout the iOS development lifecycle.

What is the difference between Principal Ios Engineer vs Senior Ios Engineer?

AspectPrincipal Ios EngineerSenior Ios Engineer
Required CredentialsBachelor's or higher in CS, extensive iOS experienceBachelor's or higher in CS, solid iOS experience
Work EnvironmentLeadership roles, architecture design, cross-team collaborationDevelopment, debugging, feature implementation
Employer & Industry UsageTech companies, startups, large enterprisesTech companies, startups, app development firms
Common Search & ComparisonYesYes

The main difference between a Principal Ios Engineer and a Senior Ios Engineer lies in their level of responsibility and scope. Principal Ios Engineers typically lead architecture decisions, mentor teams, and influence product strategy, while Senior Ios Engineers focus on developing features and solving complex problems. Both roles require strong iOS development skills, but the Principal role involves more leadership and strategic planning.

What are the key skills and qualifications needed to thrive as a Principal iOS Engineer, and why are they important?

To thrive as a Principal iOS Engineer, you need deep expertise in Swift, Objective-C, mobile architecture, and a proven track record in leading app development, often supported by a computer science degree or equivalent experience. Mastery of Xcode, iOS SDKs, version control systems like Git, and familiarity with CI/CD pipelines and automated testing tools are typically required. Exceptional leadership, mentoring, problem-solving, and communication skills help you guide teams and collaborate across functions. These skills are crucial to delivering high-quality, scalable applications and driving technical excellence within an organization.
More about Principal Ios Engineer jobs
Principal Engineer, iOS Performance

Principal Engineer, iOS Performance

Reddit

Chicago, IL

Other

Medical, Dental, Vision, Retirement, PTO

Posted 5 days ago


Job description

Principal Engineer, iOS Performance

Chicago, IL 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.

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

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.