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Security Architect (AI & Cloud)

Plain ConceptsBasque Country, Spain

Posted November 11, 2026

Job Description

We are looking for a Security Architect specialized in AI & Cloud to join the Plain Concepts Cybersecurity team and help define how a leading financial institution will be protected.

Your mission will be to design, build, and oversee security solutions from an architectural perspective, defining what “secure” means for new systems and use cases before they reach production.

You will play a key role in protecting the organization’s technology infrastructure, working across networks, cloud, systems, applications, and artificial intelligence. You will take part in strategic projects, collaborate with internal teams and specialized vendors, and maintain a deep technical understanding of the solutions implemented.

What you will do:

  • Security Architecture: define reference architectures and security requirements for networks, cloud, systems, and applications, applying Security by Design and Zero Trust principles.
  • AI Security: design secure patterns for copilots, RAG solutions, AI agents, and MCP servers, addressing risks such as prompt injection, data leakage, unauthorized access, and excessive agent permissions.
  • Identity & Access: design and integrate IAM and CIAM solutions, including non-human identities, service accounts, and identities associated with AI agents.
  • Secure Software Development Lifecycle: integrate security throughout the entire development lifecycle, adapting S-SDLC to environments where part of the code may be AI-generated or AI-assisted.
  • Security Solution Selection & Implementation: identify needs, evaluate security products and tools, coordinate their implementation, and ensure a smooth handover to operations teams.
  • Technical Coordination: work with external vendors and internal teams, ensuring the integration, performance, and security of solutions across the organization’s technology ecosystem.
  • Cybersecurity Innovation: analyze emerging trends and propose AI-driven security initiatives that help increase the organization’s security maturity.
We are looking for a Security Architect specialized in AI & Cloud to join the Plain Concepts Cybersecurity team and help define how a leading financial institution will be protected.Your mission will be to design, build, and oversee security so...
  • At least 4 years of experience in Security Architecture, participating in the design and implementation of security solutions within complex technology environments.
  • Experience with S-SDLC, IAM, and the selection, implementation, or integration of security tools.
  • A strong technical foundation in network security, cloud, secure development, authentication protocols, and cryptography.
  • Ability to identify and assess security risks, translate them into technical requirements, and propose appropriate mitigation measures.
  • Understanding of the main risks associated with generative and agentic AI, particularly in relation to identity, data, permissions, applications, and models.
  • High level of Spanish and English.
  • Availability to work in a hybrid model in Arrasate-Mondragón.

Nice to have:

  • University degree in Engineering or a STEM-related field.
  • Experience in the financial sector or regulated environments, particularly with frameworks such as DORA or NIS2.
  • Knowledge of the Microsoft ecosystem: Microsoft Entra ID, Defender, Purview, Sentinel, Azure AI Foundry, and Microsoft 365 Copilot.
  • Experience in Generative AI security: guardrails, AI gateways, AISPM, DSPM, and securing RAG applications and AI agents.
  • Knowledge of threat modeling, using methodologies or frameworks such as STRIDE or MITRE ATLAS.
  • Experience with DevSecOps, Infrastructure as Code, and security control automation.
  • Certifications such as CISSP, CSSLP, CCSP, CIAM, AZ-500, SC-100, ISACA AAISM, IAPP AIGP, or ISO/IEC 42001 Lead Implementer.