Mobile Developer Engineer (Security)

TL;DR

Mobile Developer Engineer (Android/iOS): Developing secure mobile SDKs and applications for Android and iOS with an accent on security and hardware integration. Focus on building high-quality native libraries, implementing TDD/E2E testing, and optimizing CI/CD pipelines for secure deployments.

Location: Sant Joan Despí (Barcelona), Spain. Hybrid model with 3 days of remote work allowed.

Company

International technology group providing secure connectivity and IoT solutions for digital security and financial platforms.

What you will do

• Design, develop, and maintain native mobile SDKs and libraries using Kotlin and Swift.
• Build native mobile applications to showcase SDK capabilities.
• Integrate hardware features such as secure elements and NFC.
• Collaborate with backend teams via RESTful APIs and participate in secure code reviews.
• Implement and optimize CI/CD pipelines to improve quality and deployment speed.
• Follow Scrum workflows, participating in daily standups and end-to-end feature delivery.

Requirements

• Proficiency in native Android (Kotlin) and/or iOS (Swift) development.
• Experience with mobile development tooling, test frameworks, and emulators.
• Must be based in or able to work from Sant Joan Despí (Barcelona), Spain.
• Willingness to work across both mobile platforms as needed.

Nice to have

• Cross-platform experience, specifically with Flutter.
• Familiarity with NFC, BLE, or native code integration.
• Knowledge of Docker, Rust, smart cards, or secure elements.

Culture & Benefits

• Diverse, international team environment with flat hierarchies and a people-oriented culture.
• Flexible working hours and hybrid work model (3 days remote).
• Career development through continuous training, coaching, and talent programs.
• Social benefits including private insurance and transport tickets.
• On-site canteen providing breakfast and lunch services.