Mobile Security Engineer

Overview

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We are the world's leading Next-Gen Mobile App security company. Promon operates at the center of innovation, emerging trends, and high-end mobile app security solutions. Some of the world's largest enterprises trust us to secure their apps from cyber threats. Working together, our global team makes the digital world safer and more secure, one app at a time. With several billion app users to protect, now is a fantastic time to join Promon. You’ll be part of a vibrant culture and help drive our ambitious plans for the years ahead. Our headquarters is based in Oslo, Norway, and with our global footprint, we have employees and customers all over the world.

Join our Mobile Security Engineering team! We’re looking for a Mobile Security Engineer to help build and evolve Promon’s runtime protection for both Apple and Android apps. You’ll be part of a focused, collaborative team designing and implementing cutting-edge security features that defend mobile applications against real-world threats. This is a great opportunity to apply your skills while diving deeper into security-focused problem solving. If you’re curious about how things work under the hood—and how to keep them safe—we’d love to hear from you.

Responsibilities

• Design, develop, and maintain our runtime protection solutions for mobile applications (Android or Apple platforms including iOS, macOS, visionOS).
• Research and implement advanced protection algorithms and detection techniques to guard against tampering, reverse engineering, code injection, debugging, and other attacks.
• Reverse-engineer OS internals and third-party tools to anticipate and counter emerging threats.
• Work in close collaboration with teammates to evolve our security platform in line with OS changes, hardware updates, and new attack vectors.
• Analyze and adapt the framework to ecosystem changes (e.g., new iOS/macOS/Android versions, security mitigations).

Must-have Skills And Experience

• Strong C/C++ development experience.
• Familiarity with Git and Linux/macOS development environments.
• Hands-on experience with low-level development on either Android (Java, JNI, Android internals) or Apple platforms (Objective-C, Mach-O, dyld, syscalls).
• Solid understanding of mobile system internals and runtime environments.
• Experience with reverse engineering tools and techniques (e.g., IDA, Hopper, Ghidra, Frida, LLDB).
• Proven ability to write clean, secure, and maintainable low-level code.

Bonus Points For Experience With

• Kotlin, Swift, Python, or SwiftUI.
• Embedded Linux or Linux Kernel internals.
• Assembly programming (ARM/x86).
• Kernel-level security features (e.g., PAC, sandboxing).
• Code obfuscation, anti-debugging, and runtime binary instrumentation.
• Capture the Flag events, app reverse engineering, binary analysis, or other security-related hobbies/projects.
• Prior work with jailbreak or root detection techniques.

You’ll Thrive In This Role If You

• Are passionate about low-level development and system internals
• Enjoy digging deep into technical challenges and learning how things really work
• Have a strong interest in security or curiosity about how to break and protect apps
• Are comfortable working independently as well as part of a collaborative team

Education

• Master's degree in Computer Science, Mathematics, or Security—or equivalent experience through work or personal projects

Why You'll Thrive As a Promoneer

At Promon you'll be at the forefront of game-changing technology, contributing to world-leading, future-focused innovations. Your contributions will help shape the future as we relentlessly pursue groundbreaking solutions that redefine industry standards.

Promon is planning on significant growth in the coming years. While we are growing, so will you as we encourage and support your passion, curiosity, and goals. You will work with some of the world's best app security experts and mobile security thought leaders. Get inspired, chat with our fun and engaging international team, and learn about the world. We celebrate birthdays, team wins, milestones, and holidays as part of our culture. We value Trust, Curiosity, Fun, and Ambition in our daily work.

Where You'll Work

We offer flexibility and value work-life balance. This role is open to remote workers. For those in Oslo we encourage a physical presence in our office to spend time with our team and business partners. For our remote workers we leverage various digital tools to stay connected, and we also come together for team-building activities.

Employment at Promon is contingent upon a satisfactory verification of a general background check, including education and employment verification. Any background verifications will be obtained with written consent from the individual. Promon is an equal-opportunity employer and values diversity. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, disability status, or any other protected class. Promon is a Norwegian company with employees based in APAC, the US, LATAM and Europe. Since 2006, we have been pioneers in app security and delivered world-leading security software to many of the largest banks around the globe. We work across a range of industries with various global Tier 1 clients. Promon’s technology is research-based and originates from SINTEF and the University of Oslo. Promon’s patented deep protection technology Promon SHIELD protects apps used by hundreds of millions of users.

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