Wallet Security Engineer

You will design and enhance the architecture of cold, hot, and warm wallets, develop private-key management systems, and improve architectures using technologies such as HSM and MPC. You will automate wallet security policies, build threat-monitoring systems, lead incident response, and review blockchain integrations and wallet logic for vulnerabilities.

Responsibilities

• Design and enhance cold, hot, and warm wallet architecture
• Lead the wallet security level and respond to evolving threats
• Design and develop private-key management systems
• Improve architecture and research new security technologies using HSM and MPC
• Establish procedural security for key management and wallet operations
• Automate and validate security policies through Policy as Code
• Model threats to wallet systems and interfaces
• Build security-monitoring systems to detect and respond to anomalies
• Lead responses to security incidents
• Review blockchain integrations and wallet logic for vulnerabilities
• Propose technical solutions and participate in code improvements

Requirements

• Deep understanding of cryptography, including symmetric and asymmetric keys, hashes, and digital signatures, and key-management principles
• Experience leading the design of security architectures for systems with high security requirements
• Proficiency in at least one of Python, Go, Java/Kotlin, or Rust, with the ability to develop security solutions and systems
• Practical experience applying Secure SDLC and threat modeling
• Experience designing fintech or custody-solution security architectures and developing related systems is preferred
• Experience developing or operating HSM- or MPC-based systems is preferred
• Experience implementing and automating wallet and key-management policies through Policy as Code is preferred
• Experience analyzing vulnerabilities from an attacker’s perspective and designing or validating proactive defenses is preferred
• A master's degree or higher in computer engineering, cryptography, information security, or a related field is preferred
• Knowledge of and experience applying Zero Trust principles is preferred

Benefits

• Overtime pay calculated by the minute
• Flexible staggered working hours
• Welfare points
• Commuting transportation support for night and holiday work
• Breakfast, lunch, and dinner provided or subsidized
• Unlimited snacks and beverages
• Housing purchase, rental-loan interest, or rent support
• Childcare cost support for preschool children
• Holiday and Parents' Day gifts
• Premium health checkups for employees and family members
• Group accident insurance
• Internal club activity support
• Resort and condominium accommodation support