Senior Kotlin/Swift Engineer

We are hiring a Koltin/Swift Engineer for an assignment at one of your clients.

The assignment is mainly remote with some visits onsite.

Required Competences:

•Native mobile development for Android (Kotlin/Swift); experience with optional cross-platform options (React Native, Flutter) when appropriate.

•Proficiency in proximity communication technologies (NFC, Bluetooth, QR code) and device-to-device secure protocols.

•Hands-on experience with secure handling of sensitive data, and resilient transaction workflows.

•Strong secure coding practices, encryption, secure storage, and familiarity with Secure Elements/TEE.

•Ability to design and implement secure, modular SDK components and developer-friendly APIs.

•Knowledge of and experience with regulatory/compliance domains relevant to financial services (PCI, PSD2, EMV, GDPR).

•Experience with automated testing (unit, integration, security testing) and threat modeling.

•Excellent collaboration and communication skills; fluent in English (Swedish a plus).