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Fourthline

iOS Developer

Fourthline
Netherlands · Full-time · Mid-Senior

At Fourthline, our mission is to fight financial crime. We help protect the global financial system by verifying millions of identities for banks, neobanks, online brokers, crypto exchanges, or insurers like N26, Trade Republic, flatexDEGIRO, Nationale Nederlanden, Qonto, Shine, Solarisbank, and more.

Having started our journey in January 2018 only, we're incredibly proud to count around 250 employees between our Amsterdam and Barcelona offices with over 50 nationalities.


About the role:


Fourthline is looking for a talented iOS Developer/iOS mobile Software Engineer to join the team, working on the SDK provided to our clients.


The SDK team is cross-functional, taking ownership of Mobile, Web, and backend platforms. You will collaborate closely with the current iOS engineer to develop, refine, and enhance the SDK's iOS component, ensuring top-quality and efficient mobile integrations for clients.

Why would you want to work here?

  • Working with the latest tech stack, including NFC, Vision and you will tackle tasks that extend beyond typical iOS development.
  • Collaborating within a high-performing development team, while being able to both learn from colleagues and mentor developers.
  • Clear career growth and learning opportunities.
  • The freedom to make choices in our tech and architecture
  • Visibility and impact - Your hard work, input and contributions will be used by consumers and customers.
  • Working in an agile environment, we deliver value through weekly releases.

What you will do:

  • Develop, iterate and continuously enhance our SDK, focusing on performance, reliability and client integration.
  • Using data-driven development, you'll rely on data insights to make decisions, leading to better results.
  • Raising the SDK quality by utilizing the best coding practices.
  • Improve our customer satisfaction (reduced escalations and crashes, improving retention etc.)
  • Security is our top priority with the most sensitive care and dedication to our client’s data.
  • Working on improving our portfolio to showcase our great product.

What you’ll have:

  • 4 years in software/mobile development, with a strong focus on mobile development.
  • Demonstrate expertise in Swift programming and comprehensive knowledge of iOS frameworks.
  • Commitment to Code Quality: Adherence to healthy coding practices.
  • Collaborative Team Player: Strong ability to work effectively within a team environment.

What would be a nice to see:

  • SDK Development Experience: Prior experience in developing software development kits (SDKs).
  • CI/CD Practices: Experience with continuous integration and continuous deployment processes.
  • Apple Vision Framework: Experience working with Apple's Vision framework.
  • NFC and Cryptography: Knowledge or experience with Near Field Communication (NFC) and cryptography technologies.
  • Appium Experience: Familiarity with Appium for mobile application testing.
  • Cross-platform development experience: Familiar with cross-platform framework as Cordova, React Native, Flutter, KMP.

Tech stack:


Languages: Swift (SDK and Apps) ,a bit of JS, Dart.

Distribution: GitHub, Azure DevOps using SPM, Cocoapods, Carthage.

Frameworks/Libraries: Vision, NFC, UIKit

Testing: XCTest, Appium

iOS version: iOS13

Methodology: Agile/Scrum, CI/CD

At Fourthline, we believe diversity enriches our culture and inspires you to do your best work. We value your unique talents and perspectives, welcoming them into a safe and inclusive working environment, to ultimately deliver the best products to our customers and society. You're welcome here. Fourthline is for everyone.Our hiring process is designed to be equal, fair, and transparent. We welcome people from all backgrounds, ethnicities, genders, sexual orientations, ages, abilities, religions, and experiences in life. If you're excited about this role, but your experience does not align perfectly with every qualification in the job description, we encourage you to apply anyways. You may just be the right candidate for this or other roles.

Key Skills

Ranked by relevance

ios swift continuous integration continuous deployment react native cocoapods flutter devops appium react
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Posted
Sep 03, 2025
Type
Full-time
Level
Mid-Senior
Location
Amsterdam Area
Company
Fourthline

Industries

Software Development Financial Services

Categories

Engineering

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