Defines Algorithms and Complexity application strategy at the organizational level. Makes decisions about approaches and tools. Mentors lead developers and shapes technical vision.
Roles · Application Security Engineer · Principal
What a Principal } should know
38 core skills, 53 in total. Expectations per skill, and what changes at the next level.
This page lists what a Principal } is expected to know and do, skill by skill. Core skills are the ones a manager and peers assess in a review cycle; the rest count only in self-assessment. Main areas: Programming Fundamentals, API & Integration, Cloud & Infrastructure.
Core skills for a Principal
Grouped by area. The label on the right is the expected depth: Awareness, Working, Advanced or Expert.
Programming Fundamentals · 4
Defines Code Quality and Refactoring application strategy at the organizational level. Makes decisions about approaches and tools. Mentors lead developers and shapes technical vision.
Defines Data Structures application strategy at the organizational level. Makes decisions about approaches and tools. Mentors lead developers and shapes technical vision.
Defines OOP and SOLID Principles application strategy at the organizational level. Makes decisions about approaches and tools. Mentors lead developers and shapes technical vision.
API & Integration · 4
Defines the organization's API strategy. Designs platform APIs. Shapes enterprise API governance and standards.
Defines the organization's API strategy. Designs platform APIs. Shapes enterprise API governance and standards.
Defines the organization's API strategy. Designs platform APIs. Shapes enterprise API governance and standards.
Defines the organization's API strategy. Designs platform APIs. Shapes enterprise API governance and standards.
Cloud & Infrastructure · 3
Defines enterprise container security strategy spanning build, deploy, and runtime phases. Evaluates scanning platforms and shapes supply chain security architecture. Establishes organizational container security governance aligned with compliance frameworks.
Defines organizational container security strategy: enterprise image supply chain governance, cross-team container runtime security standards, container compliance frameworks. Designs enterprise-grade container security infrastructure and evaluates container security technology investments.
Defines organizational cloud security strategy for Kubernetes at enterprise scale. Evaluates multi-cluster security architectures and designs zero-trust platform security frameworks. Establishes FinOps governance integrating security cost optimization with compliance requirements across cloud providers.
DevOps & CI/CD · 1
Defines the organization's DevOps strategy. Designs the internal developer platform. Shapes engineering excellence culture.
Testing & QA · 1
Defines the organization's QA strategy. Shapes quality engineering culture. Implements platform testing solutions.
Security · 18
Defines enterprise cloud application security strategy spanning CSPM, container orchestration, and serverless platforms. Shapes security architecture standards for cloud-native ecosystems. Coordinates compliance with SOC 2, ISO 27001 for cloud workloads and represents the organization at cloud security conferences and working groups.
Defines the enterprise-wide software supply chain security strategy, shaping dependency scanning architecture across all business units. Drives adoption of SBOM standards (CycloneDX, SPDX) and integrates SCA programs with GRC frameworks for regulatory compliance (FedRAMP, SOC 2, EU CRA). Coordinates cross-organizational vulnerability disclosure and remediation processes for critical supply chain incidents. Represents the organization in industry groups (OpenSSF, OWASP) and contributes to evolving SCA standards and best practices.
Shapes enterprise forensic architecture ensuring all application platforms maintain forensic readiness across cloud and on-premise environments. Drives industry standards for application-layer forensics and evidence handling. Advises executive leadership on forensic capability investments and regulatory compliance.
Defines enterprise privacy and GDPR/152-FZ compliance strategy. Shapes organizational privacy architecture spanning data governance, consent management, and cross-border transfer frameworks. Represents company in regulatory discussions and industry privacy initiatives.
Shapes enterprise incident response strategy with deep focus on application-layer threats and supply chain attacks. Drives integration of application security telemetry into organization-wide incident detection platforms. Advises C-level on application security incident readiness and regulatory breach notification compliance.
Defines enterprise identity and authentication security strategy. Shapes zero-trust architecture with JWT/OAuth2/OIDC as foundational components. Drives adoption of modern authentication standards (FIDO2/WebAuthn, Passkeys) across the organization. Coordinates compliance frameworks for identity management. Represents the organization in identity security community.
Shapes enterprise Kubernetes security architecture spanning multi-cluster, multi-cloud environments with zero-trust networking principles. Drives adoption of supply chain security standards (SLSA, Sigstore) for container workloads. Advises leadership on emerging container security threats and investment priorities for cloud-native security tooling.
Shapes organization-wide network security architecture for application ecosystems: defines zero-trust network policies across all business units, establishes enterprise WAF and DDoS mitigation standards, and drives convergence of network and application security monitoring into unified platforms. Influences industry practices through publications on network-layer application protection and evaluates emerging technologies like SASE and SD-WAN security frameworks.
Defines enterprise application security strategy shaping security architecture across all product domains. Coordinates organizational compliance programs (SOC2, ISO 27001, PCI DSS) integrating OWASP frameworks. Represents the organization in security communities and drives industry-level security standards adoption.
Defines enterprise-wide PCI DSS security strategy spanning all applications and services. Shapes security architecture ensuring compliance at scale across payment ecosystems. Coordinates with QSA auditors and regulatory bodies. Represents the organization in PCI security community.
Defines enterprise authorization architecture spanning RBAC and ABAC across all systems. Shapes access control strategy for zero-trust environments and microservice ecosystems. Coordinates compliance with regulatory access control requirements. Drives industry adoption of authorization best practices.
Defines enterprise SAST/DAST security testing architecture spanning all development platforms. Shapes scanning strategy for multi-cloud and microservice environments at scale. Coordinates with vendors on tool capabilities and compliance requirements. Drives SAST/DAST best practices adoption across the industry.
Defines enterprise application security strategy for secrets and credential management. Shapes organizational zero-trust architecture incorporating secrets management as a core pillar. Drives industry compliance frameworks integration (SOC2, PCI-DSS, HIPAA) for credential handling. Represents the organization in security community on secrets management practices.
Defines enterprise secure coding strategy shaping security architecture and development practices across all technology platforms. Coordinates organizational compliance programs integrating secure coding standards with SOC2, ISO 27001, and PCI DSS requirements. Represents the organization in security standards bodies and industry security communities.
Defines enterprise application security strategy aligned with SOC 2 Type II requirements. Shapes security architecture for continuous compliance, designs automated evidence collection systems, and represents the organization in auditor engagements.
Defines enterprise supply chain security architecture: shapes SBOM standardization across business units, evaluates emerging provenance technologies (SLSA, VEX, SCITT), and drives regulatory compliance strategy. Represents the organization in industry security groups and influences supply chain security standards.
Defines enterprise-wide threat modeling strategy and governance framework. Shapes organizational security architecture through systematic threat analysis across all product lines. Establishes threat modeling maturity benchmarks and drives continuous improvement. Represents the organization in industry threat modeling communities and contributes to evolving standards (OWASP, NIST).
Defines enterprise vulnerability management architecture spanning all application platforms and cloud environments. Shapes vulnerability remediation strategy aligned with business risk appetite and regulatory requirements. Coordinates with vendors and industry bodies on vulnerability disclosure. Drives vulnerability management standards adoption.
AI-Assisted Development · 1
Defines GitHub Copilot strategy at the organizational level. Shapes enterprise approaches. Mentors leads and architects.
Observability & Monitoring · 3
Defines the organization's observability strategy. Implements platform solutions. Shapes reliability culture. Defines enterprise SLO framework.
Defines organizational security observability strategy with Prometheus & Grafana: implements enterprise security monitoring platforms and detection engineering, shapes security-aware reliability culture, defines enterprise SLO framework for security detection coverage and incident response.
Defines organizational security observability strategy: implements enterprise security monitoring platforms and detection engineering practices, shapes security-aware reliability culture across the organization, defines enterprise SLO framework for security detection coverage and incident response times.
Version Control & Collaboration · 2
Defines Code Review strategy at the organizational level. Shapes enterprise approaches. Mentors leads and architects.
Defines Git Advanced strategy at the organizational level. Shapes enterprise approaches. Mentors leads and architects.
Documentation · 1
Defines Runbook and Playbook Writing strategy at the organizational level. Shapes enterprise approaches. Mentors leads and architects.
Additional skills
Not assessed by the team, but part of the self-assessment and the development plan.
} in the open competency matrix: 53 skills across 5 levels. The matrix is free for individuals and stays free.