Bitcoin Security Engineer
Core
Hands-on offensive security engineer validating and hardening Strategy's Bitcoin custody infrastructure, from cryptographic key material to custodial relationships.
Role type
Senior individual-contributor Bitcoin security engineer (offensive security/red team)
Builds
Adversarial assessments of Bitcoin wallets, signing ceremonies, hardware security modules, and custodian security postures
Domain
Cryptocurrency security / Blockchain infrastructure / Financial services
Deliverable
production ML models | product features | dashboards & analysis | research | client delivery | infrastructure | physical/clinical work
Required skills
Penetration testing, cryptographic system analysis, exploit development, threat modeling, hardware security testing, Bitcoin protocol testing, security research, tooling automation
Preferred skills
Master's degree in CS/Cryptography, OSCP/OSEP/GPEN certifications, experience with MPC/multisig schemes, Rust/Go/C++ proficiency
Technologies
Bitcoin protocol, HSMs, MPC wallets, Python, Rust, C/C++, Go, fuzzers
Responsibilities
Execute penetration tests on Bitcoin wallet architectures and signing ceremonies; test hardware wallets and cryptographic primitives; assess custodian security claims; develop custom security tooling and fuzzers; produce technical reports with proof-of-concept exploits; conduct original security research on blockchain vulnerabilities
Seniority
Senior, hands-on IC