Senior iOS Engineer - Remote

Overview

onX is seeking a Senior iOS Engineer to join the Fox Forge team at onX. This role is critical to delivering best-in-class mobile experiences for outdoor enthusiasts, leveraging Apple platforms to bring mapping, GPS, and outdoor discovery features directly to our users’ fingertips.

In Short

• Lead the design, implementation, and delivery of complex features in the onX iOS applications.
• Collaborate closely with Product, Design, and QA to deliver intuitive, performant, and reliable user experiences.
• Mentor and support junior and mid-level engineers through code reviews, pairing, and technical guidance.
• Influence architectural direction for the iOS app, ensuring scalability, maintainability, and performance.
• Participate in technical discussions and make high-judgment decisions with long-term business impact.
• Proactively identify opportunities for innovation and process improvement within the mobile platform.
• Actively contribute to the hiring process by upholding a high bar for technical and cultural fit.

Requirements

• Bachelor’s degree in Computer Science or equivalent experience.
• 8+ years of experience is required.
• Expert in Swift and the iOS ecosystem, with demonstrated experience shipping production iOS apps at scale.
• Strong grasp of iOS frameworks (UIKit, SwiftUI, etc.) and architectural patterns.
• Experience designing and debugging asynchronous, multi-threaded applications.
• Proven ability to design and implement scalable mobile systems that integrate with backend APIs.
• Deep understanding of algorithms, data structures, and their performance tradeoffs in production environments.
• Ability to operate independently on end-to-end workstreams, from concept through delivery.
• Strong communication skills; able to mediate technical discussions and build consensus across teams.
• Track record of mentoring other engineers and elevating team standards.
• Familiarity with CI/CD pipelines, unit/UI testing frameworks, and monitoring tools for mobile applications.
• A shared passion for and ability to demonstrate onX’s Company Values.
• Permanent US work authorization is a condition of employment with onX.
• Ability to travel quarterly for multiple days to a corporate office or other onX strategic location, such as a Basecamp.

Benefits

• Competitive salaries, annual bonuses, equity, and opportunities for growth.
• Comprehensive health benefits including a no-monthly-cost medical plan.
• Parental leave plan of 5 or 13 weeks fully paid.
• 401k matching at 100% for the first 3% you save and 50% from 3-5%.
• Company-wide outdoor adventures and amazing outdoor industry perks.
• Annual “Get Out, Get Active” funds to fuel your active lifestyle in and outside of the gym.
• Flexible time away package that includes PTO, STO, VTO, quiet weeks, and floating holidays.