Senior AI Applied Software Engineer (iOS)

About the Position

At Backbase, we build secure, enterprise-grade digital banking software used every day by millions of people worldwide. As a Senior AI Applied Software Engineer (iOS), you will help design, build, and evolve the Backbase Mobile Platform and the product capabilities around it.

You bring deep expertise in iOS, Android, or both. That expertise is the strong vertical of your T-shaped profile - not a boundary around the work you can do. Using AI-assisted and agentic ways of working, you will contribute across mobile platforms and the wider product stack, including UI, delivery pipelines, testing, and documentation.

This role combines mobile craftsmanship with broad product ownership. We are looking for an engineer who can make sound platform-specific decisions, use agents to move effectively through unfamiliar technology, and remain accountable for the quality, security, and business outcome of everything they ship.

Responsibilities

• Design, build, test, and maintain complex mobile applications, frameworks, libraries, and SDK capabilities for iOS, Android, or both.
• Lead product features across the full software development lifecycle, from ambiguous requirements and architectural design through implementation, release, observability, and continuous improvement.
• Use AI coding agents and automated workflows to accelerate delivery across iOS, Android, APIs, services, and CI/CD without lowering engineering standards.
• Decompose complex work into bounded, verifiable tasks; equip agents with the right context and constraints; and critically review, test, and refine their output.
• Contribute safely outside your primary area of depth by learning unfamiliar systems quickly, following local conventions, and seeking appropriate domain review.
• Design maintainable architectures and clear APIs while balancing performance, accessibility, security, privacy, resilience, scalability, and cost.
• Build modern native user experiences with SwiftUI and UIKit and/or Jetpack Compose and established Android view systems.
• Apply platform concurrency models correctly and investigate difficult runtime, threading, memory, networking, and performance problems.
• Establish strong quality feedback loops through automated tests, static analysis, observability, evaluation, and production signals.
• Improve modularisation, build systems, CI/CD pipelines, release automation, developer tooling, and engineering documentation.
• Lead technical design discussions, code reviews, root-cause analysis, incident learning, and significant refactoring initiatives.
• Work closely with product managers, designers, architects, security specialists, and engineers across the stack to turn user needs into measurable product outcomes.
• Mentor engineers and promote responsible AI use, transparent decision-making, disciplined experimentation, and continuous learning.

Requirements

• 5–7+ years of professional software engineering experience building complex products and have operated effectively at senior level.
• Deep production expertise in native mobile ecosystem.
• Designed scalable mobile architectures using patterns such as MVI, MVVM, VIPER, Clean Architecture, or equivalent approaches.
• Experience building modular applications, reusable libraries, frameworks, or SDKs with stable and well-designed APIs.
• Strong in automated testing, debugging, profiling, CI/CD, release automation, and mobile non-functional requirements.
• Hands-on experience using AI coding assistants or agents in production software delivery and can show how they improved an outcome-not only how they generated code.
• Understand the limitations and risks of agentic development, including incorrect output, missing context, insecure code, dependency risk, privacy, and over-automation, and you use verification and human review accordingly.
• Willing and able to work across both mobile platforms and adjacent systems. Existing depth in both iOS and Android is highly valued, but deep expertise in one plus evidence of effective cross-platform contribution is sufficient.
• Turn ambiguous business problems into testable technical plans, anticipate cross-system impacts, and communicate trade-offs clearly to technical and non-technical stakeholders.
• Take ownership of outcomes, support colleagues and customers when needed, and balance rapid delivery with long-term platform health.
• Communicate effectively in English and work well in an international, multidisciplinary environment.

Nice to Have

• Strong production experience in both native iOS and native Android.
• Experience with Kotlin Multiplatform, Compose Multiplatform, or another cross-platform mobile technology.
• Experience building AI-enabled product capabilities using model APIs, retrieval, evaluation datasets, guardrails, observability, or human-in-the-loop workflows.
• Experience with mobile security, accessibility, performance optimisation, SDK development, or enterprise application distribution.
• Experience in banking, fintech, or another regulated environment.
• Experience with cloud services, backend APIs, web applications, or data pipelines that support mobile products.

We Offer

• Growth: €1,000 annual self-development budget, a clear promotion path, and dedicated time for training.
• Rewards: Competitive base salary plus an annual bonus and referral bonuses.
• Hybrid Work: A flexible arrangement combining remote work with our vibrant Kraków office.
• Office Perks: Daily lunches, community breakfasts on Wednesdays, and high-end hardware (MacBook).
• Well-being: Private healthcare (Luxmed).
• Culture: Integration events, flexible working hours, and a focus on healthy work-life balance.

About the Company

At Backbase, we build secure, enterprise-grade digital banking software used every day by millions of people worldwide. We are committed to fostering an inclusive and diverse work environment where everyone feels valued and empowered to contribute their best work.