Lead iOS Engineer, Product Engineering

Actively contributes to the design, implementation, and testing of iOS applications using Swift, SwiftUI (with limited UIKit as needed), and modern architecture patterns (MVVM, MVI, Clean Architecture).

Identifies and removes delivery and quality bottlenecks (e.g., build performance, app performance, release friction) through pragmatic, scalable solutions.

Applies modern iOS practices, including CI/CD, automated testing (unit and UI), observability, and performance monitoring.

Champions iOS platform excellence, including Human Interface Guidelines (HIG), accessibility, responsiveness, and device compatibility.

Contributes to the iOS technical vision and helps evolve mobile architecture and standards.

Leverages AI-powered tools to improve development efficiency and shares learnings with the team.

Acts as a trusted advisor on iOS-specific design, architecture, and platform capabilities.

Champions best practices (lifecycle management, state handling, performance optimization, modularization) through code reviews and mentorship.

Executes delivery plans using modern iOS technologies to build performant, user-centric mobile experiences.

Proactively identifies and mitigates risks related to performance, device fragmentation, and platform constraints.

Collaborates closely with Product and Design to deliver intuitive, high-quality experiences aligned with Human Interface Guidelines (HIG) principles.

Partners with backend and platform teams to ensure seamless integration and efficient, reliable releases (including App Store rollout strategies).

Ensures quality through strong testing practices, monitoring, and iterative release cycles.

Supports and mentors junior engineers, strengthening team capabilities in Swift, SwiftUI, and modern iOS development.

Contributes to a high-performance, inclusive engineering culture grounded in trust, accountability, and collaboration.

Advocates for mobile excellence across performance, usability, accessibility, and platform consistency.

Promotes continuous learning, experimentation, and adoption of modern iOS tools and practices.

Leads by example with strong ownership, craftsmanship, and pride in delivering high-quality mobile experiences.

A deep passion for the platform and helping improve the lives of millions of people.

Bachelor's degree in a related field (Computer Science, Computer Engineering, Management Information Systems, etc.). Master's degree a plus

5+ years of software engineering experience, with a strong focus on building and delivering iOS applications in cross-functional teams

Strong proficiency in Swift and modern iOS development, including SwiftUI and core Apple frameworks (Combine, SwiftData/Core Data, Navigation), required

Deep understanding of iOS fundamentals (lifecycle, state management, concurrency (async/await, GCD), threading, performance optimization), required

Experience with modern architecture patterns (MVVM, MVI, Clean Architecture) and modularized codebases

Experience with iOS testing (XCTest, XCUITest, Appium) and mobile CI/CD pipelines

Familiarity with Human Interface Guidelines (HIG) and building accessible, responsive UIs across diverse iOS devices

Experience integrating RESTful APIs and working with asynchronous patterns (async/await, Combine); GraphQL is a plus

Experience with mobile observability and monitoring tools (e.g., Firebase, Datadog)

Knowledge of cloud platforms (AWS, Azure, GCP) and mobile-backend integration patterns

Experience with App Store release processes, versioning, and staged rollouts

Knowledge of defining, measuring, and improving key iOS performance metrics (e.g., startup time, jank/frame drops, hangs/watchdog terminations, crash-free sessions, memory and battery usage), with experience leveraging profiling and observability tools to drive continuous performance improvements

Experience with AI-assisted development tools or AI-enabled features is a plus

Strong problem-solving, communication, and collaboration skills, with the ability to operate effectively in fast-paced environments

Strong attention to detail, efficient, and organized with an ability to establish priorities and objectives

Excellent presentation and communication skills along with the ability to communicate effectively across all levels of the organization

Able to establish and maintain effective, collaborative work relationships with diverse individuals, internally and externally

Dedicated learner with a natural curiOSity for consistent growth

Exhibits comfort, ease, and flexibility working in an extremely fast-paced ever-changing, deadline-driven environment

Cooperative team player with an upbeat, positive, "can-do" attitude

Planet Fitness cares about you and your well-being. We offer a comprehensive benefits package to eligible employees which includes the core medical, dental, vision, life and disability as well as supplemental accident, hospital and critical illness coverage options. In addition, we are proud to offer eligible employees a generous time off program (including volunteer time), childcare reimbursement, paid parental leave, pet care reimbursement, tuition reimbursement, free Black Card membership, learning and development programs and a whole host of engagement activities. We offer a 401(k) Plan with safe harbor employer matching and an employee stock purchase plan. This role is also eligible to participate in an annual corporate bonus incentive program based on company financial and personal performance.

The salary for NH-based and MA-based employees hired into this role will be aligned with the range below. This is a good faith estimate, and the amount of base salary will correspond with a candidate’s professional experience, qualifications and internal equity.

Annual Base Salary Range: $130,000-$150,000

Note to Applicants: We have been made aware of an increasing number of hiring fraud schemes across numerous platforms. Planet Fitness never requires advance payments of any kind for computer equipment or any other purpose at the start of employment. Any request for you to provide payment information during the application process is part of a fraud scheme. Further, we recommend that you do not provide sensitive personal information (SSN, DOB, driver’s license number) as part of the initial application process.