Senior iOS Developer

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Malwarebytes began after our founder, Marcin Kleczynski, accidentally infected his parents’ computer while downloading a video game as a teenager. At the time, there was no product that could fully solve the problem, so he set out to build one. That early experience shaped our mission: to create protection that works when people need it most.

Since then, the digital threat landscape has only grown more complex. Attackers are faster, stealthier, and more sophisticated, while traditional solutions often overwhelm people with complicated tools and settings. At Malwarebytes, we believe protection should be both powerful and refreshingly simple because if security feels too hard to use, people will not use it. That is why our aspiration is always to stay one step ahead: cutting through the noise, stopping threats others miss, and delivering peace of mind in an unpredictable digital world.

A passionate and experienced Senior iOS Developer to join our talented team. We’re looking for someone who is eager to make a global impact by contributing to a cutting‑edge mobile security app, thrives on solving complex problems, and is excited to collaborate in a mission‑driven environment. As a Senior iOS Developer, you’ll play a critical role in shaping the future of our flagship Malwarebytes Mobile Security app used by millions worldwide.

• Architect, develop, and maintain the Malwarebytes Mobile Security app, ensuring it remains technically robust, innovative, and user‑friendly.
• Enhance and maintain key app features such as VPN, SMS and Call Kit extensions, Safari extensions, and integrate web and cloud‑based features within a modular SPM architecture.
• Collaborate closely with UX designers, product managers, backend engineers, and security researchers to deliver seamless and secure functionality.
• Develop high‑performance, reliable, and scalable solutions while ensuring code quality through thoughtful implementation, debugging, and close collaboration with the QA team.
• Develop, maintain, and refactor shared internal frameworks to support stability and functionality across iOS and macOS teams.
• Address complex technical challenges related to background execution, multi‑process interactions, and constrained environments like app extensions.
• Work with modern tools and technologies (Xcode Cloud CI / iOS 16+), while contributing to innovative prototypes and exploring emerging solutions.
• Contribute to a strong engineering culture by mentoring team members, sharing knowledge, and driving continuous process improvement.

• Self‑driven and results‑oriented, with the ability to work independently and deliver high‑quality work.
• Expertise in iOS development, with a strong track record of delivering and maintaining high‑quality apps.
• Proficiency in Swift and Swift
  
  UI, with a strong grasp of declarative UI frameworks and modern iOS development approaches.
• Advanced knowledge of RxSwift and functional reactive programming (FRP), with the ability to navigate and contribute to complex reactive codebases.
• Strong grasp of modern architecture approaches, including hands‑on experience with MVVM architecture.
• Excellent problem‑solving skills and a focus on building scalable, secure, and user‑friendly applications.
• Collaborative mindset, with the ability to work effectively across teams, including design, product, and security.
• Passion for innovation and adopting new tools, technologies, and best practices.

• Experience managing dependencies and modular architectures using tools such as SPM or Cocoa Pods.
• Understanding and experience working with background execution, multi‑process interactions, and constrained environments like app extensions.
• Experience with CI/CD workflows, preferably with Xcode Cloud and Git Hub Actions.

• An opportunity to do something great for yourself and the world.
• A great work environment that supports growth, development, and well‑being.
• Comprehensive medical, dental, and vision insurance coverage, subject to change by country/region.
• Employee Referral Bonus Program.
• Wellness programs.

(Benefits and Perks subject to change by country/region)

Mid‑Senior level

Full‑time

Engineering and Information Technology

Computer and Network Security

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