EQ Senior Security Platform Engineer Equinox Platform & Infrastructure –11d ago

Equinox is a category of one, setting the global standard for luxury health, wellness, and hospitality. Our spaces are intentionally elevated, our standards uncompromising, and our expectations high. We attract people who take pride in excellence, care deeply about quality, and want to be part of something that feels different the moment you walk through the door. We are builders, operators, and innovators who believe great environments and meaningful human connection change lives.

Diversity, belonging, and ownership aren’t slogans here, they’re how we work. At Equinox, colleagues don’t just support the business; they shape the future of wellness. Because for us, it’s not fitness. It’s life.

We create premium, immersive experiences where performance, hospitality, design, and human connection converge—and every detail matters. This is not a traditional fitness environment. It is a place where high standards, accountability, and pride in craft define the work.

Fueled by an entrepreneurial mindset, we trust our people with real responsibility and real impact. Growth is earned through action, learning is hands‑on, and careers are built by those who want to operate at the highest level. At Equinox, we don’t just offer opportunities—we offer long‑term pathways for people who want to do meaningful work in an environment that expects more and delivers more.

We are looking for a senior engineer who can operate at the intersection of cloud infrastructure, platform engineering, and security operations. This is a hybrid role for an engineer who is equally comfortable debugging a Terraform module, tuning a SIEM detection rule, and leading an incident response investigation. You'll be a primary technical escalation point for both platform reliability and security incidents across all cloud environments.

• Own and maintain infrastructure-as-code across (e.g., Terraform) cloud providers, including shared modules used by application teams org-wide
• Manage IAM users, keys, and secrets lifecycle (rotation, storage in Parameter Store/Secrets Manager, cross-environment consistency)
• Diagnose and resolve production networking and infrastructure issues: load balancer health checks, security groups, WAF rules, CDN and origin access, DNS, and container orchestration
• Administer access across supported platforms (e.g., AWS, GCP, Git Hub, etc.) and internal developer tooling
• Evaluate and integrate third‑party platform/security tooling (e.g., CSPM, code security scanners)
• Support CI/CD pipelines and troubleshoot build/deploy failures

• Own and operate the organization’s Elastic Security (SIEM) platform end-to-end: cluster upgrades, agent/integration management, and log ingestion pipelines (cloud audit logs, identity provider logs, payment/fraud logs, WAF logs)
• Design, build, and tune detection rules and alerting workflows, including integrating SIEM alerts into team communication channels (e.g., Slack)
• Continuously improve signal quality by resolving log parsing errors, refining index patterns, and reducing false positives
• Maintain technical documentation for logging architecture and detection rule logic

• Provide technical leadership and day‑to‑day oversight for the SOC team, including prioritization, escalations, investigation quality and mentoring
• Serve as a senior escalation point for the SOC, guiding and mentoring analysts through investigations
• Lead investigations into anomalous authentication activity, account compromise, and suspicious network traffic, including coordinating remediation (session revocation, credential resets, user outreach)
• Develop and maintain incident response…