Blockchain Security, Solution Architect

**Description** **About Alvarez & Marsal** Alvarez & Marsal (A&M) is a global consulting firm with entrepreneurial, action and results-oriented professionals. We take a hands-on approach to solving our clients' problems and assisting them in reaching their potential. Our culture celebrates independent thinkers and doers who positively impact our clients and shape our industry. The collaborative environment and engaging work—guided by A&M's core values of Integrity, Quality, Objectivity, Fun, Personal Reward, and Inclusive Diversity—are why our people love working at A&M. **The Team** A&M Cyber is building a dedicated blockchain and digital asset security capability to support crypto-native companies and institutional clients operating in or entering the space. This practice focuses on securing crypto platforms and infrastructure, including exchanges, custodians, financial institutions, and blockchain-based systems. As part of a founding team, you will work in a high-ownership environment, helping define methodologies, shape offerings, and deliver high-impact security engagements in a rapidly evolving domain. **The Role** - Lead deep technical security assessments of blockchain systems, crypto platforms, and digital asset infrastructure - Analyze complex architectures across custody, transaction orchestration, and blockchain integrations - Identify realistic attack paths across wallet systems, backend services, APIs, and on-chain interactions - Design and review secure architectures for exchanges, custodians, and blockchain-enabled platforms - Contribute to internal tooling, methodologies, and security frameworks for crypto systems - Work in a small, highly technical team with high ownership in an evolving domain **How You Will Contribute** - Perform hands-on security assessments of exchanges, custodians, and wallet infrastructure - Analyze wallet architectures (hot/warm/cold), MPC and multisig implementations, and key management flows - Break down transaction lifecycles end-to-end, including policy enforcement, signing, and settlement - Review backend systems, APIs, and infrastructure supporting asset movement and control - Evaluate cloud environments, access control models, and secrets management practices - Identify risks in integrations with DeFi protocols, bridges, and third-party services - Model attacker behaviour across off-chain systems and on-chain interactions - Produce technically rigorous findings with clear remediation guidance - Contribute to internal threat models and crypto-specific security playbooks **Qualifications** - 5–8+ years of hands-on cybersecurity experience with strong technical depth in systems, application, or infrastructure security - Experience working with crypto platforms, custody systems, or blockchain-based applications - Strong understanding of wallet architectures, MPC, multisig, and key management practices - Solid grasp of transaction flows and control mechanisms in digital asset systems - Good knowledge of backend systems, APIs, distributed systems, and cloud environments - Familiarity with blockchain ecosystems (e.g., EVM, Bitcoin) and common DeFi interaction patterns - Ability to analyze complex systems and identify non-obvious security risks - Experience in security assessments, threat modeling, or architecture reviews - Coding or scripting experience (e.g., Python, Go) is a plus - Strong interest in crypto security incidents and attacker techniques **Your journey at A&M** We recognize that our people are the driving force behind our success, which is why we prioritize an employee experience that fosters each person’s unique professional and personal development. Our robust performance development process promotes continuous learning, rewards your contributions, and fosters a culture of meritocracy. With top-notch training and on-the-job learning opportunities, you can acquire new skills and advance your career. We prioritize your well-being, providing benefits and resources to support you on your personal journey. Our people consistently highlight the growth opportunities, our unique, entrepreneurial culture, and the fun we have together as their favorite aspects of working at A&M. The possibilities are endless for high-performing and passionate professionals.