Principal Security Platform Engineer
AI summary of the role
This Principal Security Platform Engineer role is part of the Anthropic/Mythos response to deploy and operate new SaaS-based defensive tooling (SSPM, ASM) at a commercial bank.
No longer in the current catalog. Last included 2026-09-09. Check the employer’s posting for availability.
What you’ll do
- Own end-to-end onboarding, configuration, integration, and ongoing operations of 2–3 new SaaS security platforms (SSPM, ASM) supporting the CISO Office.
- Build solution designs for SSPM, ASM, and adjacent SaaS security efforts, promoting reuse of approved platforms and enterprise standards.
- Lead vendor onboarding, SSO/Entra integration, role design, and production cutover for new SaaS security platforms.
- Design and implement baseline policies, detection rules, posture benchmarks, and attack-surface reduction configurations across connected SaaS apps (M365, Workday, ServiceNow, Salesforce).
What you’ll bring
- 8+ years of progressive experience in Information security engineering with a focus on cloud/SaaS security, posture management, or attack surface management.
- Strong working knowledge of AWS, Azure, and Entra security models.
- Proficiency with APIs, Python (or PowerShell) scripting, and integration patterns (REST, webhooks, event-driven).
- Experience integrating security tooling with SIEM/SOAR, ServiceNow, and IAM platforms (SailPoint/Entra preferred).
Technologies
SSPM · ASM · AWS · Azure · Entra · SailPoint · SIEM · SOAR · ServiceNow · Python · PowerShell · M365
About Western Alliance Bancorporation
Phoenix-based public commercial bank serving businesses through specialized lending, deposits, treasury, trust, mortgage, and payments lines across 30+ industries.
Public · 2000–5000 people
Source and classification
Internal deployment & tooling · Evidence for this classification:
Job Title: Principal Security Platform Engineer Location: Block 23 What you'll do: As a Principal Engineer I you'll provide SME expertise in your respective domain as well as adjacent domains to ensure solutions are safe, secure, compliant, and reliable. You'll identify development and support needs as well as take on large and complex design responsibilities supporting project tasks. You'll also engage with project and business sponsors refining requirements and objectives of targeted solutions. As Principal Engineer I, you also facilitate dialogue and activities, and work to ensure team collaboration, including teams outside of your domain. This role is being established as part of the Anthropic/Mythos response to stand up and operate the new SaaS-based defensive tooling the bank is adding to offset Mythos-era risk (e.g., SaaS Security Posture Management, Attack Surface Management,
More from the job description
Job Title: Principal Security Platform Engineer Location: Block 23 What you'll do: As a Principal Engineer I you'll provide SME expertise in your respective domain as well as adjacent domains to ensure solutions are safe, secure, compliant, and reliable. You'll identify development and support needs as well as take on large and complex design responsibilities supporting project tasks. You'll also engage with project and business sponsors refining requirements and objectives of targeted solutions. As Principal Engineer I, you also facilitate dialogue and activities, and work to ensure team collaboration, including teams outside of your domain. This role is being established as part of the Anthropic/Mythos response to stand up and operate the new SaaS-based defensive tooling the bank is adding to offset Mythos-era risk (e.g., SaaS Security Posture Management, Attack Surface Management, and adjacent cloud/SaaS security platforms). The Security Platform Engineer will own end to end onboarding, configuration, integration, and ongoing operations of 2–3 new SaaS platforms supporting the CISO Office and will flex into adjacent Mythos workstreams (cloud security hygiene, vulnerability remediation, segmentation tooling) as gaps emerge. Build solution designs for SSPM, ASM, and adjacent SaaS security efforts that can be handed off to engineers and analysts for execution while promotin [... source excerpt omitted ...] d 2LOD Collaborate with Infrastructure & Operations, IAM, Endpoint Engineering, SOC, GRC, and the BISO team to ensure SaaS security controls align with enterprise standards What you'll need: Bachelor’s degree in computer science, Information security, IT, or related field (or equivalent experience). 8+ years of progressive experience in Information security engineering with a focus on cloud/SaaS security, posture management, or attack surface management. Strong working knowledge of AWS, Azure, and Entra security models; Microsoft 365, Workday, Salesforce, and ServiceNow security configurations a plus. Proficiency with APIs, Python (or PowerShell) scripting, and integratio [... source excerpt omitted ...] ble hands-on experience to help grow your career! About the company: Western Alliance Bank, Member FDIC, is a wholly owned subsidiary of Western Alliance Bancorporation. Serving clients nationwide, Western Alliance Bank includes six legacy bank brands — Alliance Association Bank, Alliance Bank of Arizona, Bank of Nevada, Bridge Bank, First Independent Bank and Torrey Pines Bank — that remain part of the company’s heritage, as well as AmeriHome Mortgage, a Western Alliance Bank Company. Western Alliance Bancorporation is committed to equal employment and will consider all qualified applicants without regard to race, sex, color, religion, age, nation origin, marital status, di
Employer postings · Data from · Sources