full-time
Blockchain Backend Security Engineer
ING Hubs Türkiye
- Employer
- ING Hubs Türkiye
- Location
- Istanbul, Istanbul, Turkey
- Working pattern
- hybrid
About the role
Design and develop secure Java-based backend services and APIs for digital asset operations, including wallet management and custody workflows. Implement cryptographic operations and secure key lifecycle management while integrating with blockchain SaaS providers and HSMs. Requires a Bachelor's degree and 5+ years of software engineering experience with strong proficiency in Java 17+, Spring Boot, and container technologies. Candidates should have fluent English skills and ideally possess experience with MPC custody solutions and financial security standards.