Senior iOS SDK Developer
Summary
Build and maintain an iOS SDK for secure contactless payments using Swift, enabling QR-code transactions for fintech clients.
IDEMIA Secure Transactions, a division of IDEMIA Group, is the leading technology provider making it safer and easier to pay and connect. With unmatched expertise in cryptography and credential issuance, IST is trusted by over 2,000 financial institutions, mobile operators, automotive manufacturers, and IoT providers worldwide. Every day, IST secures billions of essential transactions, ensuring the highest levels of data protection and convenience.
General Description
Currently we are looking for a Senior Developer to join one of the SDK development teams in the IDEMIA Digital Card Platform. The SDKs provided for iPhone devices enable the use of QR codes. We seek a developer who will work with us to enable contactless transactions on iOS devices.
The team develops new features and maintains the quality of existing ones in our SDK. This solution is then integrated by our clients into their mobile applications.
Responsibilities & Technical stack
- Design and implementation of HCE contactless payment functionality
- Knowledge of Kotlin Multiplatform SDK performance and security optimization
- Knowledge of cryptography
- Participation in scrum meetings
- Preparatory work for security audits and functional audits
- Preparation of technical documentation
- Collaboration with external teams
- Collaboration with clients during implementations
- Resolving customer production issues
- Participation in code review
Technologies stack:
Swift 5
XCTest
Git
Swift Package Manager
Jenkins
CI/CD
Other
- Experience in working with iOS SDKs, preferably with payments/fintech solutions
- Experience with Kotlin Multiplatform would be an asset
- Knowledge of minimal version of iOS 17.4
- Knowledge of GenAI supported development with tools like GitHub Copilot CLI to create and utilize Skills, Specs and MCP Servers
- English and French at a fluent level are necessary to communicate with the team and stakeholders
Nice to have:
- Mentoring for junior/mid developers
- Integration with EMV specification
- Knowledge of Android HCE (additional plus)
- Bachelor’s or Master’s degree in Computer Science, Software Engineering, Cybersecurity, or a related field
- Advanced coursework or certifications in cryptography, mobile security, or secure software development preferred
Paris, France. We are working in a hybrid model with at least three visits to the office per week. If you prefer to work fully on site, our office is always open for you.
We value the diversity of our teams and welcome people from all walks of life, regardless of how they look, where they come from, who they love, or what they think.