Senior Platform Architect – AI Trust & Security (Hybrid)

Ocho; Belfast City District; Hybrid; GBP 140,000 - 190,000; Full time

Benefits offered by this job

Hybrid work model

Job summary

Ocho is building a new agentic trust and identity platform in Belfast. As Platform Architect you will define the reference architecture across identity, authority, execution and assurance to enable secure AI-driven decisions.

You will lead design authority across multiple product teams, work with executives, product and security leadership, and influence industry standards for agentic AI trust and security.

Qualifications

• 15+ years of technology leadership experience.
• 7+ years leading enterprise/platform security architecture for identity or trust infrastructure.
• Deep expertise in cryptography, PKI, HSMs and certificate management.

Responsibilities

• Define and own the reference architecture spanning identity, authority, execution and assurance for a new agentic trust platform.
• Establish architectural principles, standards and governance across multiple product teams.
• Own the technical specification for workload identity and delegation (SPIFFE/SPIRE, OAuth 2.x).
• Design a cryptographically signed delegation and authorization framework (HSM backed).
• Develop a tamper-evident, verifiable evidence and audit system for AI-driven decisions.

Skills

Technology leadership

Enterprise architecture

Identity security / PKI

SPIFFE / SPIRE

HSM & cryptography

OAuth / delegation

Cloud platforms

Industry standards

Education

Bachelor's degree in Computer Science, Engineering or related field

Job description

Ocho is building a new agentic trust and identity platform in Belfast. As Platform Architect you will define the reference architecture across identity, authority, execution and assurance to enable secure AI-driven decisions.

You will lead design authority across multiple product teams, work with executives, product and security leadership, and influence industry standards for agentic AI trust and security.