iOS Engineer

Adyen is looking for a full-time iOS developer to help us conquer the world of mobile payments. You’ll be working in a cross-functional and motivated team with a lot of room to start new initiatives and take ownership. Besides having an open and entrepreneurial mindset, we expect you to be experienced in iOS development, both from an implementation and architectural point of view. Join us on the journey of reimagining the way people pay on mobile and take your part in revolutionizing the payment industry!

Our Team

The Shopper and Merchant Experience team is at the forefront of transforming how businesses accept payments. We’re not just building software; we’re empowering merchants to turn their everyday mobile devices into powerful payment terminals. Specifically, our focus is on the POS Mobile SDK, a core component enabling this innovative capability natively on iOS.

While the Shopper and Merchant Experience team works broadly on our mobile payment solutions from the iOS perspective, the Payments Surface & Reliability sub-team has a unique and exciting focus: owning the interaction layer across all payment surfaces - translating complex system logic into human-centric, resilient experiences. From tipping screens to error recovery, every touchpoint we ship is consistent, accessible, and provably correct.

The Problems We’re Solving

Our primary mission is to ensure client-side scalability and rock-solid reliability as we pave the way for 10x growth. As an iOS engineer on this team, you will be tackling unique challenges like:

• Ensuring Flawless, High-Volume Device Orchestration: It’s not just about backend volume; on the client side, we must ensure our POS Mobile SDK handles rapid, consecutive transactions without memory leaks, UI freezes, or state corruption on the device.
• Delivering Consistent Performance Under Any Condition: Ensuring a fast, reliable payment experience regardless of the iOS device model. You will build resilient local UI states that gracefully handle unpredictable network drops, hardware timeouts from card readers, and edge-case payment declines.
• Building a Future-Proof Mobile Architecture: Designing modular, highly extensible UI and interaction layers within our SDK. Your architecture will allow us to seamlessly plug in new payment surfaces, support dual-screen setups, and adapt to evolving merchant needs without rewriting core layout logic.

We’re looking for a motivated, enthusiastic team player with:

• A minimum of 5 years of experience in iOS development using Swift.
• Strong expertise in SwiftUI.
• Experience designing highly themeable and adaptive SwiftUI components.
• Experience with modern Swift concurrency (Async/Await).
• A deep appreciation for clean API design, backward compatibility, and minimizing binary size.
• A strong commitment to quality, including writing Unit/Integration/Snapshot/UI tests and code reviews.
• Excellent verbal and written communication skills in English.
• A willingness to learn and continuously improve.
• A flexible and open-minded approach to new ideas.
• A proactive mindset with the ability to bring forward impactful ideas to enhance our solutions.

Nice to Have:

• Experience with building, packaging, and distributing iOS SDKs.
• Experience utilizing Objective-C.
• Knowledge of iOS security best practices (Keychain, encryption).

Adyen provides payments, data, and financial products in a single solution for customers like Meta, Uber, H&M, and Microsoft - making us the financial technology platform of choice. At Adyen, everything we do is engineered for ambition.

For our teams, we create an environment with opportunities for our people to succeed, backed by the culture and support to ensure they are enabled to truly own their careers. We are motivated individuals who tackle unique technical challenges at scale and solve them as a team. Together, we deliver innovative and ethical solutions that help businesses achieve their ambitions faster., Our unique approach is a product of our diverse perspectives. This diversity of backgrounds and cultures is essential in helping us maintain our momentum. Our business and technical challenges are unique, and we need as many different voices as possible to join us in solving them - voices like yours. No matter who you are or where you’re from, we welcome you to be your true self at Adyen.