Agentic Security Engineer

About the Position

Agentic Security Engineer

Join Causa Prima as an Agentic Security Engineer in Madrid or Munich, focusing on designing and building a secure system integrity layer for autonomous agents.

Responsibilities

• System Integrity Layer & Threat Modeling: Design the core execution model that governs how autonomous agents run, interact, and modify system state.
• Proactive Threat Modeling: Conduct continuous, code-level threat modeling across our distributed networks to identify structural vectors, memory leakage, prompt manipulation, and authorization bypasses before a single line hits staging.
• Auditability as a Native Property: Build append-only, tamper-resistant event systems that make every action reconstructable without relying on external logging frameworks or reactive "audit tooling."
• Isolation, Trust Boundaries, & Adversarial Testing: Engineer strict execution and data isolation layers between agents, users, and workflows in a multi-tenant infrastructure.
• Continuous Offensive Testing: Run active internal pentesting, adversarial chaos testing, and targeted red teaming exercises against our own infrastructure to aggressively expose flaws in isolation barriers and cryptographic verification boundaries.
• Agent Execution Guarantees: Ensure all automated, agentic accounting processes are strictly attributable, deterministic where required, verifiable in hindsight, and unalterably constrained by explicit system rules.
• Robust Engineering & Pipeline Security: Architect and refine our internal software delivery pipeline to guarantee absolute integrity from code commit to production deployment.
• Build deterministic verification mechanisms into the CI/CD pipeline: Ensuring that all third-party dependencies, agent libraries, and compiled services are cryptographically signed, scanned, and secure by default.
• Compliance Through Architecture: Translate complex regulatory and audit requirements directly into low-level system constraints, completely eliminating the need for reactive operational processes or manual review workflows.

Requirements

• Experience: 5+ years designing production backend platforms and distributed systems design.
• Database experience: Deep schema design, RLS, and event-sourcing database expertise.
• Security Architecture: Practical application-level security, encryption models, key management, and auth patterns.
• Adversarial Mindset: You naturally think like an attacker to uncover race conditions, logic flaws, and vulnerabilities.
• Policy-as-Code: Hands-on experience with Cerbos, OPA, Cedar, or similar.

Nice to Have

• Cryptographic primitives
• Event streaming (Kafka/Redpanda)
• Kubernetes and cloud-native architecture knowledge
• LLM/agentic system security exposure (prompt injection defense, guardrails, agent threat modeling)

We Offer

• Competitive salary
• Opportunity to work in a dynamic and innovative environment
• Collaborative and inclusive team culture

About the Company

Causa Prima is a leading company in the engineering sector, dedicated to building secure and reliable systems for autonomous agents. We are committed to pushing the boundaries of technology and ensuring the highest standards of security and compliance.