Senior AI Applied Software Engineer

About the Position

Senior AI Applied Software Engineer

Join our Product & Platform Department team in Madrid

As a Senior Applied AI Software Engineer (Android), you will serve as a technical anchor for our mobile identity and banking suites-shaping SDK architectures that impact over 100 million users worldwide. You will lead the shift toward AI-native mobile development, combining deep Android architecture expertise with agentic AI tooling to set new productivity and quality benchmarks.

Responsibilities

• AI-Native Mobile Leadership: Champion the integration of LLM workflows, prompt engineering, and agentic AI tooling into the mobile engineering life cycle.
• Core Mobile & SDK Architecture: Architect scalable, secure Android SDKs, libraries, and modular mobile components using Kotlin, Jetpack Compose, and Coroutines.
• Full-Lifecycle Ownership: Own end-to-end mobile capabilities from local data persistence and security layers to backend API integrations and CI/CD pipelines.
• Quality & Testing Champion: Maintain an uncompromising focus on quality, enforcing automated test coverage targets (80%+ unit testing) and performance profiling.
• Mentorship & Standard Setting: Mentor mobile developers, advocate best practices in mobile architecture, and establish shared engineering standards across the team.

Requirements

• Experience: 5 to 7+ years of professional software engineering experience with a heavy focus on native Android development.
• Tech Mastery: Advanced mastery of Kotlin, Jetpack Compose, Coroutines, Clean Architecture/MVVM, and building modular mobile SDKs used by external teams.
• Proven AI Production Experience: Active, hands-on production use of AI-driven developer tooling, agentic workflows, or mobile build automation.
• DevOps & Tooling: Deep understanding of mobile CI/CD automation tools (Bitrise, Jenkins, Gradle scripting) and non-functional requirements (mobile security, performance).
• Leadership Skills: Proven capacity to mentor peers, evaluate complex trade-offs, and guide autonomous squads toward clear technical goals.

We Offer

• Ownership: Real ownership means real responsibility. From day one, you set the pace, make the decisions, and see your work land where it matters. You drive the outcomes, you celebrate the wins.
• Standard: The work is the standard. We built something that didn't exist before - an AI-native Banking OS where humans and AI agents work side by side, at scale, inside real banks. We raise the bar because we've seen what's possible when you don't settle.
• Ambition: Ambition without ego. You'll work with people who've shipped things most thought couldn't be done. Direct, down-to-earth, no egos. The kind of team where the best idea wins and everyone's genuinely glad when it does.
• Real AI: Real AI, running in real banks. We're not waiting for AI to be ready. It already is - running inside banks, serving customers, solving problems that matter, out in the real world today.
• Growth: Grow while you build. Annual learning budget, global exposure, and work that moves you forward. Your growth and our mission go hand in hand.
• Flexibility: 17 offices. One mission. Hybrid model, no micromanagement, offices across the world. The mission is clear. Where you do your best work is up to you.
• Wellness: Wellness that goes the distance. Real support built for the long game. We invest in the people who build the product, not just the product.

About the Company

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