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Security Architect – Zero Trust, Application Access
3Core Systems, Inc. Review the internal-only application portfolio and assess each app’s risk, data sensitivity, and access requirements .
Core Competencies
Role fitCore Competencies
Use this summary to align your resume positioning with the role.
Demonstrates extensive experience in information security with a focus on Zero Trust architecture and application security. Proficient in designing security standards and collaborating with cross-functional teams to implement effective access models.
Highest-signal resume keywords
Zero Trust Architecture DesignZscaler Experience (ZPA/ZIA)Application Security LeadershipThreat Modeling and Secure Design ReviewsCISSP or CCSP Certification
ATS Keywords
Tailor your resumeApplicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills
Application SecurityThreat ModelingSecure Design ReviewsAuthentication/SSO (SAML, OAuth, OIDC)Device Posture ChecksConditional AccessIAM Platforms (Okta, Azure AD)WAF SecurityReverse Proxy SecurityAPI Gateway Security
Soft Skills
Strong Communication SkillsPresentation SkillsCollaboration Across Teams
Tools & Technologies
Zscaler (ZPA/ZIA)IAM PlatformsSecurity Standards Documentation
Certifications & Qualifications
CISSPCCSPZscaler Certifications (ZCCA/ZCCP)
Industry Keywords
Information SecuritySecurity ArchitectureApplication SecurityEnterprise EnvironmentsAutomotive ServicesFinancial Services
Tech Stack
Tools & technologiesAzure
About the role
Key responsibilities & impact- Review the internal-only application portfolio and assess each app’s risk, data sensitivity, and access requirements
- Recommend whether each application can be exposed publicly or should stay limited to managed, company-issued devices
- Design and implement Zero Trust access patterns using Zscaler (ZPA/ZIA), replacing the need for a traditional VPN
- Create, document, and roll out security standards and reference patterns for application access, authentication, and authorization
- Update existing application security standards to reflect the new access model
- Partner with application owners, infrastructure, networking, and IAM teams to gain approval for the access model and implement it
- Present findings, risks, and recommendations to IT and security leadership
Requirements
What you’ll need- 8+ years in information security, with significant time in security architecture or application security leadership
- Hands-on experience designing and implementing Zero Trust architecture
- Hands-on Zscaler experience (ZPA and/or ZIA) strongly preferred
- Strong application security background, including threat modeling, secure design reviews, and authentication/SSO (SAML, OAuth, OIDC)
- Experience deciding how applications should be exposed (public, private, or device-restricted) and securing each scenario
- Familiarity with device posture checks, conditional access, and IAM platforms (Okta, Azure AD/Entra ID, or similar)
- Proven ability to write clear security standards and patterns that engineering teams actually adopt
- Strong communication skills, with comfort presenting to leadership and working across teams
- CISSP, CCSP, Zscaler certifications (ZCCA/ZCCP), or similar preferred
- Experience with WAF, reverse proxy, or API gateway security preferred
- Background in enterprise or automotive/financial services environments preferred
Benefits
Comp & perks- 3-month contract with possible long-term extension onto other projects
- Remote work option