DLT Security Architect

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Job Overview

Overview of the Role

Citi, the leading global bank, has approximately 200 million customer accounts and does business in more than 160 countries and jurisdictions. Citi provides consumers, corporations, governments, and institutions with a broad range of financial products and services, including consumer banking and credit, corporate and investment banking, securities brokerage, transaction services, and wealth management.

As a bank with a brain and a soul, Citi creates economic value that is systemically responsible and in our clients’ best interests. As a financial institution that touches every region of the world and every sector that shapes your daily life, our Enterprise Operations & Technology teams are charged with a mission that rivals any large tech company. Our technology solutions are the foundations of everything we do from keeping the bank safe, managing global resources, and providing the technical tools our workers need to be successful to designing our digital architecture and ensuring our platforms provide a first-class customer experience. We reimagine client and partner experiences to deliver excellence through secure, reliable, and efficient services.

Our commitment to diversity includes a workforce that represents the clients we serve from all walks of life, backgrounds, and origins. We foster an environment where the best people want to work. We value and demand respect for others, promote individuals based on merit, and ensure opportunities for personal development are widely available to all. Ideal candidates are innovators with well-rounded backgrounds who bring their authentic selves to work and complement our culture of delivering results with pride. If you are a problem solver who seeks passion in your work, come join us. We’ll enable growth and progress together.

Job Description – DLT Security Architect

The DLT Security Architect is a senior technical specialist responsible for providing security architecture, risk oversight, and design assurance for Distributed Ledger Technology (DLT) and digital asset initiatives across Citi. The role ensures DLT platforms, smart contracts, and supporting infrastructure are designed and operated securely, at scale, and in alignment with Citi’s regulatory and risk requirements.

Working closely with the DLT Center of Excellence (CoE), Cyber Architecture, Engineering, Risk, and Compliance teams, the architect advises on secure adoption of blockchain technologies, including Citi’s Digital Asset Platform (CDAP), and contributes to the DLT Security Standard governing blockchain use across the firm.

This is a hands-on advisory and subject‑matter expert role, influencing outcomes through technical authority rather than delivery ownership, and ensuring DLT initiatives meet the standards expected of a globally systemically important financial institution.

Key Responsibilities

DLT Security Architecture & Design

• Provide architecture guidance and design assurance for DLT platforms, nodes, smart contracts, wallets, and related services
• Review DLT solutions for alignment with Citi architecture standards, SDLC, and security controls
• Develop DLT reference architectures, patterns, and best practices
• Evaluate third‑party DLT platforms and vendors against Citi security requirements

Security & Risk Architecture

• Apply security‑by‑design principles covering identity, key management, transaction signing, node security, and network architecture
• Perform DLT‑specific threat modeling (e.g., smart contracts, consensus, oracles, external connectivity)
• Partner with Security and Risk teams to ensure solutions operate within approved risk appetite
• Maintain blockchain‑specific security assessments and control frameworks

Smart Contracts & SDLC Integration

• Advise on secure smart contract development, deployment, upgrades, and decommissioning
• Define security gates and review checkpoints within deployment pipelines
• Improve tooling, automation, and assurance for smart contract security

Governance & DLT CoE Support

• Act as technical SME for the DLT CoE and related governance forums
• Translate governance decisions into actionable security and architecture requirements
• Contribute to and maintain the DLT Security Standard

Collaboration & Advisory

• Partner with engineering and application teams to guide secure DLT implementations
• Communicate complex DLT risks and mitigations to technical and non‑technical stakeholders
• Support training and knowledge uplift on DLT and digital asset security
• Present security architecture recommendations to senior leadership

Required Qualifications

Technical & Security Expertise

• 10+ years in technology architecture, cybersecurity, or distributed systems
• Hands‑on experience with DLT/blockchain or cryptographic systems
• Strong knowledge of cryptographic key management (HSM, MPC, signing models)
• Understanding of smart contract architectures and security risks
• Experience integrating security into enterprise SDLCs

Domain & Risk Knowledge

• Experience in large, regulated enterprise environments (financial services preferred)
• Familiarity with security‑by‑design and threat‑modeling methodologies

Communication & Influence

• Strong written and verbal communication skills
• Proven ability to influence outcomes through technical credibility and collaboration

Preferred Qualifications

• Experience with digital assets, custody platforms, or tokenisation
• Hands‑on exposure to enterprise DLT platforms (e.g., Hyperledger, Corda, Ethereum/EVM)
• Knowledge of consensus mechanisms, DeFi risks, or zero‑knowledge proofs
• Experience with security reviews, audits, or regulatory‑adjacent engagements
• Relevant certifications (CISSP, TOGAF, blockchain or cloud certifications)

Why This Role Matters

This role enables Citi’s secure adoption of DLT and digital assets by:

• Protecting high‑value digital asset platforms and smart contracts
• Enabling safe innovation within a regulated, tier‑1 financial institution
• Shaping firm‑wide DLT security standards as initiatives move from pilot to production

Working Environment: High autonomy, specialist depth, emerging technology focus, and direct exposure to senior leadership with measurable impact on real financial platforms.

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Job Family Group:

Technology

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Job Family:

Information Security

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Time Type:

Full time

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Primary Location:

Tampa Florida United States

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Primary Location Full Time Salary Range:

$113,840.00 - $170,760.00

In addition to salary, Citi’s offerings may also include, for eligible employees, discretionary and formulaic incentive and retention awards. Citi offers competitive employee benefits, including: medical, dental & vision coverage; 401(k); life, accident, and disability insurance; and wellness programs. Citi also offers paid time off packages, including planned time off (vacation), unplanned time off (sick leave), and paid holidays. For additional information regarding Citi employee benefits, please visit citibenefits.com. Available offerings may vary by jurisdiction, job level, and date of hire.

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Most Relevant Skills

Please see the requirements listed above.

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Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

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Anticipated Posting Close Date:

Apr 03, 2026

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Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

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