For one of our internetaional client we are looking for a Poland based Kotlin Developer.

Job details:

• Kotlin Developer
• Full-time
• Remote
• Start: asap
• Duration: 12 months (+ extensions possible)
• Industry: various

Scope:

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

Skills:

Kotlin (clean, testable, efficient code)
Zero Trust Architecture
Kotlin Multiplatform Mobile (KMM)
OAuth 2.0, OpenID Connect, MFA, SSO
Integration with identity providers
Least privilege access and continuous verification
Secure credential and token storage
Runtime security monitoring (device integrity, jailbreak/root detection
Platform integrations (iOS & Android interop)