Senior iOS SDK Developer

IDEMIA; Paris; Hybride; EUR 90 000 - 120 000; Plein temps

Résumé du poste

IDEMIA Secure Transactions, a division of IDEMIA Group, is the leading technology provider focusing on safer payments and connections. We are seeking a Senior Developer to join our SDK development team in Paris to enable contactless transactions on iOS devices.

You will design and implement HCE contactless payment functionality, optimize Kotlin Multiplatform performance, and contribute to security audits and documentation in a collaborative Scrum environment.

Qualifications

• Experience in working with iOS SDKs, preferably with payments/fintech solutions.
• Experience with Kotlin Multiplatform would be an asset.
• Knowledge of iOS 17.4 minimumOS version.
• GenAI-assisted development with tools like GitHub Copilot CLI to create Skills, Specs and MCP Servers.
• Fluent in English and French for team and stakeholder communication.

Responsabilités

• 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 and clients during implementations.
• Resolving customer production issues.
• Participation in code reviews.

Connaissances

Swift

Kotlin Multiplatform

Cryptography

Multilingual comms

Formation

Bachelor’s or Master’s degree in Computer Science or related field

Outils

Git

Swift Package Manager

Jenkins

CI/CD

Description du poste

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.

Currently we are looking for Senior Developer to join one of SDK development teams in the IDEMIA Digital Card Platform. The SDKs provided iPhone devices allows using QR code. We seek for developer who will work with us to enable contactless transactions on iOS devices.

The Team develops new features and maintain quality of already existing ones in our SDK. This solution is then integrated by our clients into their mobile applications.

Responsibilities:

• Design and implementation of HCE contactless payment functionality
• Knowledge of Kotlin MultiplatformSDK 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 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 on fluent level are necessary to communicate the team and stakeholders.
• Knowledge of GenAI supported development with tools like GitHub Copilot CLI to create and utilize Skills, Specs and MCP Servers

Nice to have:

• Mentoring for junior/mid developersIntegration 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.

The role is based in Paris, France. We are working in hybrid model with at least three visits at the office per week. If you prefer to work fully on site, our office is always open for you :)

What does the recruitment process look like?

• A 30-minute telephone HR interview with Ania
• Technical meeting where you will meet the leader and a member of the team, this will take 1.5h