Design, develop, and maintain high-quality mobile applications for iOS and Android platforms.Implement and integrate OpenID Connect for authentication and authorization.Develop and manage Public Key Infrastructure (PKI) and ensure secure communication using JSON Web Encryption (JWE).Collaborate with cross-functional teams to define, design, and ship new features.Work on bug fixing and improving application performance.Continuously discover, evaluate, and implement new technologies to maximize development efficiency.Develop and maintain applications for Apple Wallet and ensure compliance with EU-specification eIDAS2.Implement solutions for Decentralized ID and Mobile Driver's License.Write clean, maintainable, and well-documented code.Participate in code reviews and provide constructive feedback.Mentor and guide junior developers.