We are hiring a Principal Security Engineer / DevSecOps Lead to own the security posture of our SaaS platforms, cloud environments, and AI-enabled applications. This is a senior hands-on leadership role: you will design and drive the security architecture that protects a regulated, multi-tenant investment platform, embed automated security controls into how we build and ship software, and lead red-team-informed offensive testing that measurably reduces real risk. You will partner with SRE, platform, data, and application teams — and directly with the CISO to set the enterprise standard for secure development.

What you'll do

• Own security architecture for our SaaS platforms, multi-cloud environments (AWS, Azure), and AI-enabled applications, including LLM- and agent-based workloads.
• Build and operate a modern DevSecOps program: SAST, DAST, IaC scanning, SBOM/supply-chain (Sigstore, SLSA), secrets detection, container and Kubernetes admission control, and policy-as-code (OPA/Cedar).
• Design and run an automated vulnerability management program that prioritizes by exploitability and business impact, drives closure SLAs, and holds engineering teams accountable through metrics.
• Lead application security across the SDLC: threat modeling, secure design reviews, code review at critical seams, security champions program, and paved-road guardrails engineers actually adopt.
• Direct red-team and adversarial testing — internal exercises, purple-teaming, and third-party engagements — and translate findings into durable architectural fixes, not just tickets.
• Harden multi-tenant isolation, identity, and data protection for a regulated buy-side platform; own the security controls that map to SOC 2, SOX, and applicable regulatory obligations.
• Set the security-by-design bar for AI-enabled applications: prompt-injection defense, tool/agent boundary controls, model and data provenance, retention, and abuse monitoring.
• Partner with IT/AI Platform, SRE, and Data Governance on identity, secrets, network segmentation, logging, and incident response; participate in on-call for security incidents.
• Mentor senior engineers across security and platform; represent security in executive and board-facing risk reporting when required.

Required experience