Mobile Engineer - iOS

RealDefense; California; On-site; USD 120,000 - 160,000; Full time

Job summary

RealDefense is seeking a mobile engineer to join a small, hands-on team focused on privacy and security apps for iOS and Android. You will navigate Kotlin Multiplatform and native iOS development, shaping the platform as it grows and mentoring others along the way.

You will own features end-to-end from planning through production, participate in code reviews, and collaborate with our head of mobile to set architecture.

Qualifications

• CS degree or equivalent practical experience.
• 1+ year of full-time iOS development in Swift.
• At least one shipped App Store app you can walk us through end to end.
• Strong Swift and SwiftUI fundamentals with testing.
• Willingness to learn Kotlin Multiplatform and Compose Multiplatform.
• Based in the Los Angeles area and able to work from the office 3 days a week.

Responsibilities

• Build privacy and security features with Apple’s system extensions.
• Build subscriptions and accounts with StoreKit 2.
• Write shared Kotlin alongside Swift, and review both iOS and Android code.
• Own features in production: TestFlight, App Store review, crash and log triage, performance tuning.
• Work with AI coding agents every day: plan, review, and test what they write.
• Write a short plan before you build and keep it current as the work changes.

Skills

Swift

SwiftUI

Kotlin Multiplatform

Compose Multiplatform

AI coding agents

Education

CS degree or equivalent

Tools

Xcode

StoreKit 2

Instruments

Job description

RealDefense is bringing its protection to mobile. We're building privacy and security apps for iOS and Android that protect people on the device they use most and connect them with the RealDefense products and services they rely on across phone and computer.

The apps run on one shared platform that powers several consumer brands. Features are built once and shared, while each app's navigation and experience are built natively, so it feels at home on iOS and on Android. It's an early-stage team, so you'll help shape both the apps and the platform.

The Role:

We build consumer privacy and security apps for iOS and Android. Our apps run on Kotlin Multiplatform. On iOS, Swift and SwiftUI drive the app's navigation and overall experience, plus the parts that depend most on Apple's platform: system extensions, StoreKit and deep OS integration. You'll build that iOS depth with us and work in shared Kotlin too. You'll take features from idea to the App Store: plan, build, test, ship and support them in production.

You'll join a small, hands-on team where engineers own features across both platforms. You'll work directly with our head of mobile, who sets the architecture, still writes code and mentors the team. You'll have a real say in technical decisions, grow your skills across iOS, Android and Kotlin Multiplatform, and take on more ownership as the platform grows.

What you’ll do

• Build privacy and security features with Apple's system extensions, such as content blocking and network filtering.
• Build subscriptions and accounts with StoreKit 2.
• Write shared Kotlin alongside Swift, and review both iOS and Android code.
• Own your features in production: TestFlight, App Store review, crash and log triage, performance and battery tuning with Instruments, fixes.
• Work with AI coding agents every day: plan the work, keep each step small and tested, review what the agent writes.
• Write a short plan before you build and keep it current as the work changes.

What you bring (required)

• A CS degree or equivalent practical experience, and 1+ year of full-time professional experience building iOS apps in Swift.
• At least one app you helped ship to the App Store, from work or your own project, that you can walk us through end to end.
• Solid Swift and SwiftUI fundamentals: you can write, test and debug a feature on your own, with unit and UI tests as part of how you ship.
• AI-native development: you build with AI coding agents (Claude Code, Cursor, Copilot agent mode or similar) every day, and can show how you plan, direct, review and test what they write. You can explain every line you ship, and you keep plans and docs current, so teammates and agents work from the same context.
• Willingness to write and learn Kotlin, Kotlin Multiplatform and Compose Multiplatform. Many of our features live in shared code.
• Based in the Los Angeles area and able to work from our office 3 days a week.

Nice to have (not required)

• Personal apps, open source or hackathon projects you can show us.
• App extensions or system frameworks: content blockers, Network Extension, widgets or similar.
• Any Kotlin, Kotlin Multiplatform or Compose Multiplatform experience.
• Profiling memory, battery and startup time with Instruments.
• Interest in privacy and security.

About RealDefense – Join a Team That's Making an Impact

Headquartered in Los Angeles, CA, RealDefense LLC is an award-winning software development company known for its flagship product brands, including iolo System Mechanic and SUPERAntiSpyware. With a commitment to innovation, RealDefense has consistently earned top ratings from PC Magazine and protects over 3 million customers. The RealDefense portfolio also features renowned privacy and security software brands, including MyCleanID, MyCleanPC, USTechSupport, ioloVPN, GetMyDrivers, WarrantyStar, and Support.com.

RealDefense partners with leading consumer brands in the cybersecurity and PC manufacturing sectors to deliver telemetry-enabled monetization solutions. For more information, please visit www.realdefen.se.

How We Work – Our Core Values

• We Get It Done.
• We Ask Questions.
• We Like Our Job.
• We Over-Communicate.
• We Prove Ourselves Every Day.

Equal Opportunity Employer

RealDefense is an equal opportunity employer. We make employment decisions based on qualifications, merit, and business needs, and we do not discriminate on the basis of race, color, religion, sex (including pregnancy), sexual orientation, gender identity or expression, national origin, ancestry, age, disability, medical condition, genetic information, marital status, military or veteran status, reproductive health decision-making, or any other characteristic protected by federal, state, or local law. We will consider qualified applicants with criminal histories in a manner consistent with the Los Angeles Fair Chance Initiative for Hiring Ordinance.

We are committed to providing reasonable accommodations to applicants with disabilities. If you need an accommodation at any point during the application or interview process, please contact us at [e-mail].