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# Senior iOS Engineer / FitnessTech

- **Company:** Kelly Services Inc.
- **Location:** Chicago, IL, United States (Remote available)
- **Experience:** Expert
- **Salary:** $180,000.0 - $210,000.0
- **Contract:** Permanent contract
- **Skills:** Apple Watch, Code Generation, Code Review, Continuous Integration, Programming Tools, Firmware, Mobile Application Software, Machine Learning, Performance Tuning, Software Architecture, Swiftui, Siri, Information Technology, Reactive Programming
- **Published:** October 26, 2026
- **Apply:** https://www.chicagocareersite.com/job.asp?id=3467256412&tx=HT7569TTT&pt=1&aff=0B19D771-A501-4A5E-8338-2A822B784D54&utm_source=Job%20Feed&utm_medium=textkernel&utm_campaign=DE&utm_term=0B19D771-A501-4A5E-8338-2A822B784D54

## About the Role

This position offers the opportunity to influence a flagship mobile product that sits at the center of the customer experience. The ideal candidate is passionate about creating elegant mobile applications, has strong product instincts, and enjoys collaborating with cross-functional teams spanning hardware, firmware, machine learning, and backend engineering. Engineers are given significant ownership, exposure to executive leadership, and the ability to make meaningful product decisions that directly impact users., * 6+ years building and shipping native iOS applications

 * Strong expertise with Swift
 * Professional experience developing with SwiftUI
 * Experience using Combine or reactive programming frameworks
 * Strong understanding of software architecture patterns
 * Experience participating in code reviews and engineering best practices
 * Bachelor's degree in Computer Science or equivalent hands-on experience

Desired Skills & Experience

 * Experience working on consumer-facing mobile products
 * Familiarity with modular application architectures
 * Experience with CI/CD pipelines
 * Knowledge of code generation or project automation tools
 * Experience supporting Apple Watch, Widgets, Siri, or other iOS extensions
 * Interest in health, fitness, wellness, or connected devices

## Description

* 85% Native iOS Development
 * 10% Mobile Architecture & Performance Optimization
 * 5% CI/CD & Developer Tooling

Daily Responsibilities

 * 75% Hands-On Development
 * 5% Mentoring and Code Reviews
 * 20% Cross-Functional Collaboration