Security Engineer III

**JOB DESCRIPTION** We are looking for a Security Engineer to build a security platform to secure the firm's usage of SaaS platforms. The platform will monitor security posture and threat signals from SaaS vendors and apply various detection models to analyze the data. This platform will support real\-time analytics and scale to the increasing demands of usage across the company. This is a hands\-on role for an engineer who enjoys building high\-scale, event\-driven systems and applying secure\-by\-design and trustworthy computing principles into everything they ship. **Job Responsibilities** * Build Java\-based services that ingest, validate, normalize, and enrich high\-volume security telemetry from SaaS vendors (e.g., posture signals, audit/admin events). * Design and operate event processing pipelines with strong correctness properties (deduplication, idempotency, retries, replay/backfill, schema evolution). * Develop platform authentication and authorization capabilities (service identity, token lifecycle, least privilege, policy enforcement, audit logging). * Partner with security and engineering teams to deliver actionable detections and posture insights, and to onboard new SaaS integrations efficiently. * Drive operational excellence: observability, performance, reliability/SLOs, incident readiness, and automation. * Establishes portfolio\-level guardrails for AI\-assisted workflows used in cybersecurity architecture and governance, ensuring traceability/auditability and alignment to security and resiliency expectations. * Leads reuse\-first adoption of enterprise\-authorized AI capabilities within the work environment to accelerate cybersecurity architecture analysis, portfolio\-level option evaluation, and delivery of strategic solutions, with human\-in\-the\-loop validation and appropriate handling of sensitive data. **Required qualifications, capabilities, and skills** * Formal training or certification with 5\+ years building production