Senior Security Platform Engineer

Equinox; New York (NY); Hybrid; USD 145,000 - 175,000; Full time

Benefits offered by this job

Competitive salaries and benefits

Complimentary Club membership

Perks and incentives with our products

Job summary

Equinox is redefining luxury wellness with elevated spaces and a culture of excellence. We seek a Senior Engineer to own cloud infrastructure, security operations, and SIEM across environments, serving as a primary escalation point for platform reliability and security incidents.

You will lead incident response, manage IAM/secrets, and integrate CSPM/SIEM tools, while mentoring SOC analysts and collaborating with engineering teams to secure React/Node/Python stacks.

Qualifications

• 5+ years of infrastructure/platform engineering with multi-account cloud ownership.
• Strong Terraform/IaC experience, including shared modules.
• Experience operating a SIEM platform (Elastic Security) for logs, detections, and alerts.
• Solid networking fundamentals: load balancers, security groups, WAF, DNS, CDN.
• Experience with identity providers (Entra ID/Azure AD, Okta) and SSO concepts.
• Led or contributed to security incident response and escalation.
• Hands-on escalation across multiple teams and security domains.
• Security practices across modern web/mobile/backend stacks and CI/CD security.
• Cloud platform familiarity across AWS, GCP, Azure.
• Knowledge of payments security concepts and fraud risk tooling.
• Container orchestration experience (ECS or similar).
• Mentoring SOC analysts or junior engineers.
• Familiarity with CSPM/vulnerability tooling (Wiz, CrowdStrike).
• Code review and secure coding awareness (React Native/Web, Node.js, Java, Python).
• SAST/SCA tooling and CI/CD integration.

Responsibilities

• Own and operate IaC across cloud providers and shared modules.
• Manage IAM users, keys, and secrets lifecycle.
• Diagnose production networking/infrastructure issues (LBs, SGs, WAF, DNS, CDN).
• Administer access across platforms (AWS, GCP, GitHub, etc.).
• Evaluate/integrate third-party platform/security tooling (CSPM, SAST/SCA).
• Support CI/CD pipelines and fix build/deploy failures.
• Own Elastic Security SIEM end-to-end: upgrades, agents, logs.
• Design/detect rules and alerting; integrate SIEM with Slack channels.
• Improve signal quality; reduce false positives; maintain logging docs.
• Provide technical leadership for the SOC and mentor analysts.
• Lead investigations into anomalous auth, account compromise, and network anomalies.
• Develop incident response runbooks and documentation.
• Maintain AI/ML security posture; manage access controls for models.
• Coordinate remediation across teams and drive secure coding practices.

Skills

Infrastructure experience

Terraform

SIEM

Networking basics

Identity & SSO

Incident response

Technical escalation

App security

Cloud platforms

Payments security

Container orchestration

Mentoring SOC analysts

CSPM security tooling

Code review

Security scanning (SAST/SCA)

AI/LLM security

Tools

Wiz

GitHub Advanced Security

Job description

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.

WHAT WE DO

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.

Job Description

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.

What You'll Do

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, GitHub, 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

SIEM & Detection Engineering

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

Security Operations & Incident Response

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 runbooks and reference documentation

Build and maintain WAF‑based detection and mitigation capabilities (e.g., fingerprint‑and IP‑based blocking of malicious/fraudulent traffic)

Identity, Access & Compliance

Drive identity governance initiatives, including cloud identity reconciliation (e.g., managed vs. unmanaged accounts) and license/access audits

Design and implement authentication hardening measures: conditional access policies, MFA/authentication strength requirements, and legacy protocol deprecation (e.g., legacy SMTP auth)

Partner with IT/security leadership on identity provider strategy and vendor licensing decisions

Application, AI & Code Ownership

Hold end‑to‑end security ownership across the organization's core application stack, spanning front‑end (React Native, React Web), back‑end (Node.js, Spring Boot/Java, Python/Flask), and AI/ML systems

Review code and architecture for security vulnerabilities (e.g., dependency/supply‑chain risk, secrets handling, authN/authZ flaws, insecure API design) across mobile, web, and service layers

Partner with application engineering teams to embed security requirements into the SDLC — secure coding standards, PR review gates, and CI/CD security scanning (SAST/SCA/secrets detection)

Triage and drive remediation of vulnerabilities surfaced by code scanning and vulnerability management tooling (e.g., Wiz, GitHub Advanced Security) across the full technology stack

Maintain visibility into third‑party/open‑source dependency risk (npm, Maven/Gradle, pip) and coordinate patching for critical CVEs

Serve as the security point of contact for engineering teams building on React Native, React Web, Node.js, Spring Boot, and Python/Flask, ensuring consistent security posture regardless of language/framework

Own the security posture of AI/ML systems and LLM‑powered features: model access controls, data governance for training/prompt data, prompt injection and jailbreak risk, and secure integration with third‑party AI APIs and vendors

Evaluate and vet AI coding assistants and internal AI tooling for data exposure, IP leakage, and supply‑chain risk before organization‑wide adoption

Define and maintain security guardrails/review processes for teams building AI‑powered features or agents, including monitoring for anomalous or abusive usage patterns

Fraud & Payments Security

Partner with risk and payments teams to investigate and mitigate payment fraud (e.g., card‑testing/BIN attacks, risk‑scoring anomalies in third‑party payment platforms)

Analyze and recommend changes to fraud risk rules, allow‑lists, and risk profiles

Track and help prioritize security remediation tickets related to payment endpoints

Qualifications

Required:

5+ years of experience in infrastructure/platform engineering, with hands‑on production ownership in multi‑account cloud environments

Strong Terraform/IaC experience, including authoring and maintaining shared modules

Experience operating a SIEM platform (Elastic Security preferred) — log ingestion, detection engineering, and alerting

Solid networking fundamentals: load balancers, security groups, WAF, DNS, CDN

Experience with identity providers (Entra ID/Azure AD, Okta, or similar) and authentication/authorization concepts (SSO, SAML, MFA, conditional access)

Demonstrated experience leading or heavily contributing to security incident response

Comfortable being a hands‑on technical escalation point across multiple teams simultaneously

Working familiarity with application security practices across modern web/mobile and backend stacks (e.g., React/React Native, Node.js, Java/Spring Boot, Python/Flask) — able to read code, understand architecture, and identify security risk even if not writing production application code day‑to‑day

Preferred:

Proven experience with AWS, GCP and Azure

Familiarity with payments security concepts (fraud scoring, PCI‑adjacent systems, payment gateway risk tools such as Adyen)

Experience with container orchestration (ECS or similar)

Experience mentoring SOC analysts or junior engineers

Familiarity with CSPM/vulnerability management tooling (e.g., Wiz, CrowdStrike)

Hands‑on development or code review experience in React Native, React Web, Node.js, Spring Boot/Java, or Python/Flask

Experience with SAST/SCA tooling (e.g., GitHub Advanced Security, Snyk, SonarQube) and integrating security scanning into CI/CD

Familiarity with AI/LLM security concepts (prompt injection, data leakage, model access control) and securing AI‑powered product features or internal AI tooling

What Success Looks Like

Production infrastructure incidents are diagnosed and resolved quickly, with root cause identified and preventive fixes (module/PR updates) shipped

SIEM coverage expands reliably with high‑quality, low‑noise detections

Security incidents are triaged and resolved with clear communication and documented runbooks

Identity and access posture continuously improves (reduced legacy auth, tighter conditional access, cleaner account governance)

Cross‑functional partners (data, application, payments teams) see this role as a trusted, responsive technical partner

Pay Transparency: $145K - $175K

Additional Information

AS A MEMBER OF THE EQUINOX TEAM YOU WILL RECEIVE

• We offer competitive salaries, benefits, and industry leading commission opportunities for club employees
• Complimentary Club membership
• Perks and incentives with our products and services including Personal Training, Pilates, Spa and Shop

This job description is intended to describe the general requirements for the position. It is not a complete statement of duties, responsibilities, or requirements. Other duties not listed here may be assigned as necessary to ensure the proper operations of the department.

Equinox is an equal opportunity employer. For more information regarding our career opportunities, please visit one of our clubs or our website at https://careers.equinox.com/

All your information will be kept confidential according to EEO guidelines. Must have a legal right to work in the United States.