Mobile Engineer

Mobile Engineer (iOS)

This isn’t a typical mobile role.

I'm working with an established mobile security company whose product is a mobile SDK embedded directly into banking apps to detect fraud, malware, and device compromise in real time.

That means:

• Your code runs inside someone else’s app
• On compromised devices
• Across thousands of OEM / OS combinations
• While actively trying not to be detected by attackers
• And without breaking the host app, build, or performance

This is cat-and-mouse engineering, not features

The role

As a Mobile Engineer (iOS), you’ll help build, maintain, and evolve iOS components that are part of a security-critical product trusted by banks.

You’ll work closely with Product, Security, and Engineering teams to ensure the software is:

• Stable
• Performant
• Secure
• Long-lived

This is an environment where good engineering matters and mistakes have real consequences.

What you’ll be working on:

• Developing, testing, and deploying iOS tools, features, and SDK components
• Improving systems that power commercial mobile security services
• Monitoring and analysing runtime behaviour in production
• Responding to customer issues and incidents
• Working in SCRUM / Kanban teams focused on quality over velocity
• Continuously improving how mobile software is built and shipped

What we’re looking for: and you don’t need to tick every box, mindset matters more than keywords.

You likely have:

• Solid experience as an iOS / Mobile Engineer
• Strong knowledge of Swift and native iOS development
• A good understanding of the iOS platform, SDKs, and device behaviour

Nice to have (not required):

• Experience building or maintaining mobile SDKs
• Experience with real-time data processing on mobile
• Some Android exposure
• Curiosity about lower-level or systems languages (e.g. C++, Rust)

This role suits engineers who enjoy:

• SDK or platform-style work
• Security-adjacent, adversarial problems
• Performance-sensitive, OS-level challenges
• Long-lived software trusted by serious customers

If you’re looking for shiny UI or visible feature output, this probably isn’t for you. Small team, senior, few layers, €85-100k + sec's.

This isn’t for everyone, and that’s intentional. If adversarial mobile engineering sounds interesting, it’s worth a conversation.