Senior iOS Engineer – Identity & Access Management

onX; United States; Remote; USD 146,000 - 182,000; Full time

Benefits offered by this job

Competitive salaries

Health benefits

Parental leave

401k matching

Outdoor adventures

Get Out, Get Active funds

Flexible time away

Job summary

onX is seeking an experienced iOS platform engineer to own the identity and subscription libraries used across our iOS apps. You will define technical direction, co‑own API contracts with the backend, and push for improvements in token management, session handling, and concurrency.

You’ll collaborate with backend, iOS platform leads, and product teams to deliver secure, scalable client code. Experience with AI features and cross‑team initiatives is valued.

Qualifications

• Bachelor's degree in Computer Science or a related field or equivalent experience.
• 6+ years of professional software development, with 3+ years shipping production iOS apps in Swift.
• Strong knowledge of Swift, Swift Concurrency, and diagnosing race conditions in production apps.

Responsibilities

• Own the iOS platform libraries and API contracts across apps and backend.
• Harden token refresh, session lifecycle, and offline behavior to keep users signed in.
• Build client‑side observability for identity flows and improve auth health data.

Skills

Swift programming

Swift Concurrency

OAuth 2.0/OpenID Connect

SDK/Library design

Security‑first mindset

Cross‑team leadership

AI experimentation

Problem solving

Education

Bachelor's degree in Computer Science or related field

Tools

Swift Package Manager

Sentry

StoreKit

WebAuthn/OAuth flows tooling

Job description

ABOUT onX
We’re a team of builders, adventurers, and risk takers using technology to help people confidently explore the outdoors. Driven by our mission to awaken the adventurer inside everyone, we build products that optimize every outdoor experience and inspire confidence to get out and go further.
We’re a high-growth tech company. The pace is fast, the work takes grit, and ambiguity is part of the job. As the world changes around us, we adapt - continuously evolving how we build, prioritize, and deliver.
Our business moves quickly, and there’s real opportunity to shape what we build next. Each of our verticals - Hunt, Offroad, Backcountry, and Fish - is at a different stage of maturity, which means the challenges you encounter and the impact you have will vary depending on where you sit and what the business needs most.
We operate with an experimentation mindset, continually iterating and improving how we solve problems. We expect our people to use the latest tooling, including AI, thoughtfully and responsibly, pairing human judgment with technology to increase quality, speed, and impact.
Our impact comes to life through the products we build, in the stories of our customers, and in our growing commitment to land stewardship and recreational access.

WHAT YOU'LL DO

• Own the platform. You’ll own onX’s iOS identity, subscription, and feature-access libraries: shared Swift packages consumed by every onX iOS app. You’ll set their technical direction, decide which patterns to keep and which to replace, and see changes through to production. You’ll co‑own the API contracts with backend and push for changes when needed.
• Make auth dependable in the field. You’ll harden token refresh and session lifecycle, lead adoption of Swift strict concurrency, and handle network loss gracefully so users stay signed in when they need the app most.
• See what’s happening. You’ll build client‑side observability for identity flows so the team can see auth health by device, OS version and app, then use that data to find and fix problems before customers report them.
• Champion both directions. You’ll represent iOS in IAM design work (account management, session management, passkeys, one‑time passwords, entitlements and bundling) and represent IAM in the iOS codebase, partnering with backend engineers, iOS platform leads and product teams across our apps. You’ll push for new capabilities when the current ones aren’t enough.
• Work with your Android counterpart. You’ll be partnered on the team with an Android counterpart to keep identity and entitlement behavior consistent: shared specs, shared test cases, and joint design docs.
• Raise the bar. You’ll grow the team’s client expertise through code review, documentation and mentoring, including backend engineers who contribute to client code. You’ll identify the next problems worth solving, write the design doc, align stakeholders, and drive it through rollout across apps.
• Adopt new technologies. You’ll look for opportunities to embed AI as a repeatable co‑pilot in daily workflows by integrating experimentation into real work, and continuously refining its use with sound judgment and validation.
• Support for uptime and availability. You’ll join the team-based oncall rotation for the Identity team. While this does not require strong backend expertise, you may occasionally need to follow a runbook or elevate depending on the situation.

WHAT YOU’LL BRING

• Bachelor’s degree in Computer Science or a related field, or equivalent experience.
• Six or more years of professional software development experience, with building and shipping production iOS apps in Swift as a primary focus for at least three of those years, is required.
• Deep knowledge of Swift and Swift Concurrency (async/await, actors, Sendable), and experience diagnosing race conditions and threading issues in production apps.
• Experience building and maintaining a shared library or SDK used by multiple apps or teams (Swift Package Manager, versioning, API design for other engineers).
• Working knowledge of mobile authentication: OAuth 2.0 / OpenID Connect, token storage in the Keychain, ASWebAuthenticationSession, and session handling across app launches and backgrounding.
• Security‑first mindset: you think about secure defaults, token handling, and failure modes as part of your design process.
• Comfort being the go‑to expert for client identity and entitlements: you weigh tradeoffs, explain them to engineers outside iOS, and push back or propose a new approach when the current one isn’t working.
• Experience driving cross‑team technical initiatives, from design doc to rollout.
• A strong curiosity for exploring new technologies, including AI
• 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 bi‑annually for multiple days to a corporate office or other onX strategic location, such as a Basecamp.

ADDED BONUSES

• Experience with identity platforms such as Ory (Kratos, Hydra), Auth0 or Okta, or with passkeys / WebAuthn.
• Experience instrumenting iOS apps with Sentry or similar tools, including custom metrics and tracing.
• Experience with StoreKit, in‑app subscriptions or entitlement checks.
• Experience building offline‑first apps, or apps used where connectivity is unreliable.
• Experience working with a distributed team.
• A love of the outdoors and the apps that get people there.

THE ONX EXPERIENCE

onX is a distributed company with more than 400 employees across the country. We come together regularly to work in person and stay connected through regional basecamps and a culture that balances individual ownership with deep collaboration.
While we move quickly, we’re not a scrappy start-up. We operate with clear goals, structure, and frameworks that guide how we prioritize and execute. Priorities matter. While they may shift, data shapes how we evolve as our business, products, and the world around us change.
Clear priorities and structure don’t limit ownership - they make it possible. You’ll have the autonomy to define your work and make meaningful decisions within clear strategic boundaries. You’ll partner closely with others to solve complex problems and build solutions that scale across teams and platforms. Along the way, you’ll be supported with feedback, tools, and opportunities to grow your craft as you take on new challenges.

WHERE YOU CAN WORK

onX is a distributed company with employees across the U.S. We have physical offices in Bozeman and Missoula, MT, along with virtual workforce “Basecamps” in Austin, TX; Denver, CO; Kalispell, MT; Minneapolis, MN; Portland, OR; Salt Lake City, UT; and Seattle, WA. Basecamps are not physical offices; they are geographic hubs made up of remote employees who live within a 60-mile radius of the city center, creating opportunities for local connection and collaboration.
We have a strong preference for hiring candidates who live near one of our offices or within a Basecamp, and we prioritize candidates in these locations first. Candidates who live elsewhere in the U.S. may still be considered, provided they reside in a state where onX is currently able to employ team members.
At this time, we are NOT able to employ individuals whose primary work location is in: Alabama, Alaska, Arkansas, Connecticut, Delaware, District of Columbia (D.C.), Florida, Hawaii, Illinois, Kansas, Louisiana, Massachusetts, Missouri, New Jersey, New York, North Dakota, Ohio, Oklahoma, Rhode Island, South Dakota, West Virginia, and Wyoming.

HOW YOU’LL BE COMPENSATED

onX is committed to compensating all employees fairly and equitably for their contributions. For this position, applicants can expect to make between $146,000 to $182,000 upon hire. The pay range will vary based on experience, skills, certifications, and education among other factors as required in the job description. In addition, full-time onX employees are eligible for a grant of common share options with a vesting schedule and a potential annual bonus of 10% based on company performance.

WHAT WE’RE OFFERING YOU

• Competitive salaries, annual bonuses, equity, and opportunities for growth
• Comprehensive health benefits, including a no‑monthly‑cost medical plan
• Paid parental leave of 13 weeks for birthing parents and 5 weeks for non‑birthing parents
• 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
• Flexible time away package that includes PTO, STO, VTO, and paid holidays

PERFORMANCE ESSENTIALS

In this role, success is driven by cognitive abilities such as concentration and problem‑solving, essential for our computer‑centric tasks. onX will explore reasonable accommodations to ensure that individuals with diverse abilities can fully engage in and contribute to the essential physical and mental functions of the job. If you need assistance or accommodation, please contact us at [e-mail].

Application Deadline is [day of week], [month] [day] at [0:00 pm] MST

Position open until filled.

#LI-Remote

WE'RE EQUAL OPPORTUNITY EMPLOYER

At onX, we believe that unique perspectives make us stronger. By bringing together people with different experiences, ideas, and viewpoints, we fuel innovation and move closer to our mission of awakening the adventurer in everyone. We are proud to be an equal opportunity employer and are committed to fairness not only in hiring, but also in development, compensation, and promotion. Our goal is to build an inclusive community where every team member can show up authentically and thrive. Together, we win as one team.