Senior Kotlin Developer (Mobile)

Spyrosoft is an authentic, cutting-edge software engineering company, established in 2016. In 2021 and 2022, it was among the fastest growing technology companies in Europe, according to the Financial Times. The company specializes in technology solutions for industry 4.0, automotive, geospatial, healthcare & life sciences, employee experience & education, and financial services industries.

• Strong experience with Kotlin and mobile development (Android or cross-platform)
• Hands-on experience with Kotlin Multiplatform Mobile (KMM)
• Solid understanding of authentication and authorization protocols (OAuth 2.0, OpenID Connect)
• Experience working with identity providers and secure session/token management
• Good understanding of mobile security best practices
• Experience implementing or working with Zero Trust Architecture principles
• Familiarity with secure storage solutions on mobile platforms
• Strong problem-solving skills and attention to detail
• Good command of English (B2+)

Nice to have:

• Experienced in using AI tools in day-to-day workflow
• Experience with mobile security frameworks or SDKs
• Knowledge of device security signals and threat detection mechanisms
• Background in cybersecurity or working with security teams
• Experience in enterprise-scale environments

• Develop and maintain cross-platform modules using Kotlin Multiplatform Mobile (KMM)
• Design and implement secure authentication and authorization flows (OAuth 2.0, OpenID Connect, MFA, SSO)
• Integrate with identity providers and enforce Zero Trust principles (least privilege, continuous verification)
• Collaborate with security architects to embed security best practices into mobile client design
• Ensure secure storage of credentials and tokens using platform-specific secure storage mechanisms
• Monitor and respond to runtime security signals (e.g., device integrity, jailbreak/root detection)
• Write clean, maintainable, and testable Kotlin code for both shared and platform-specific modules