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VP Engineering perspective - org design (team topologies), process improvement, cross-team dependencies, engineering culture, OKRs, incident management maturity, platform strategy, DX optimization, release management at scale

Test pyramid decision matrix, coverage targets, when to write which test type, mock vs real dependency decisions, and test ROI analysis.

Module composition, state management, workspace strategy, provider versioning, and infrastructure-as-code best practices.

Use this skill when writing new features, fixing bugs, or refactoring code. Enforces test-driven development with 80%+ coverage including unit, integration, and E2E tests.

Typosquatting detection, install script analysis, dependency confusion prevention, and phantom dependency detection for npm/pip.

SOC2 Type II compliance - Trust Service Criteria, access controls, audit logging, change management, incident response, evidence collection

Self-evolving skill system. Skills are scored after execution (0-100) on 5 dimensions. Score 90+ over 5 runs = crystallized (locked). Score below 30 = auto-repair attempted. Skills improve themselves through usage feedback.

Meta-skill for creating and managing Claude Code skills

Autonomous skill lifecycle manager. Reviews skill-compounder drafts, promotes high-confidence patterns, merges duplicates, archives low-quality drafts. Zero manual review required - runs on every session start.

Use this skill when adding authentication, handling user input, working with secrets, creating API endpoints, or implementing payment/sensitive features. Provides comprehensive security checklist and patterns.

Security audit workflow - OWASP Top 10, input validation, auth, secret detection, vulnerability scan

Comprehensive code review workflow - parallel specialized reviews → synthesis

Store a learning, pattern, or decision in the memory system for future recall.

Release preparation workflow - security audit → E2E tests → review → changelog → docs

Code refactoring workflow - analyze → plan → implement → review → validate

Query the memory system for relevant learnings from past sessions using semantic search.

Pythonic idioms, PEP 8 standards, type hints, and best practices for building robust, efficient, and maintainable Python applications.

Prompt templates, few-shot examples, chain-of-thought, structured output, evals

Product analytics - event taxonomy, funnel analysis, A/B testing, retention metrikleri.

Identify failure modes before they occur using structured risk analysis

Product Requirements Document writing - PRD templates, MoSCoW prioritization, user personas, competitive analysis, feature specs, acceptance criteria, risk assessment

Generate, edit, and read PowerPoint presentations. Create from scratch with PptxGenJS (cover, TOC, content, section divider, summary slides), edit existing PPTX via XML workflows, or extract text with markitdown. Triggers: PPT, PPTX, PowerPoint, presentation, slide, deck, slides.

AI-powered web search, research, and reasoning via Perplexity

Analyze brownfield codebase and create initial continuity ledger

Structured logging with Pino/Winston, OpenTelemetry tracing, metrics collection, Grafana dashboards, and alerting rules.

Migration workflow - research → analyze → plan → implement → review

Problem-solving strategies for numerical integration in numerical methods

Open, create, read, analyze, edit, or validate Excel/spreadsheet files (.xlsx, .xlsm, .csv, .tsv). Use when the user asks to create, build, modify, analyze, read, validate, or format any Excel spreadsheet, financial model, pivot table, or tabular data file. Covers: creating new xlsx from scratch, reading and analyzing existing files, editing existing xlsx with zero format loss, formula recalculation and validation, and applying professional financial formatting standards. Triggers on 'spreadsheet', 'Excel', '.xlsx', '.csv', 'pivot table', 'financial model', 'formula', or any request to produce tabular data in Excel format.

Use this skill when visual quality and design identity matter for a PDF. CREATE (generate from scratch): "make a PDF", "generate a report", "write a proposal", "create a resume", "beautiful PDF", "professional document", "cover page", "polished PDF", "client-ready document". FILL (complete form fields): "fill in the form", "fill out this PDF", "complete the form fields", "write values into PDF", "what fields does this PDF have". REFORMAT (apply design to an existing doc): "reformat this document", "apply our style", "convert this Markdown/text to PDF", "make this doc look good", "re-style this PDF". This skill uses a token-based design system: color, typography, and spacing are derived from the document type and flow through every page. The output is print-ready. Prefer this skill when appearance matters, not just when any PDF output is needed.

Problem-solving strategies for proof theory in mathematical logic

Problem-solving strategies for predicate logic in mathematical logic

Metacognitive check-ins during problem solving - detects when to pivot or persist

Routes problems to appropriate mathematical frameworks using expert heuristics

Develops mathematical understanding through examples, visualization, and analogy

Problem-solving strategies for vector spaces in linear algebra

Problem-solving strategies for matrices in linear algebra

Problem-solving strategies for eigenvalues in linear algebra

Problem-solving strategies for source coding in information theory

Problem-solving strategies for entropy in information theory

Problem-solving strategies for channel capacity in information theory

Problem-solving strategies for prime numbers in graph number theory

Problem-solving strategies for modular arithmetic in graph number theory

Problem-solving strategies for graph algorithms in graph number theory

Problem-solving strategies for operator theory in functional analysis

Problem-solving strategies for hilbert spaces in functional analysis

Problem-solving strategies for banach spaces in functional analysis

Problem-solving strategies for residues in complex analysis

Problem-solving strategies for contour integrals in complex analysis

Problem-solving strategies for analytic functions in complex analysis

Problem-solving strategies for natural transformations in category theory

Problem-solving strategies for limits colimits in category theory

Problem-solving strategies for categories functors in category theory

Problem-solving strategies for rings in abstract algebra

Problem-solving strategies for groups in abstract algebra

Problem-solving strategies for fields in abstract algebra

Multi-layer cognitive stack for machine-verified mathematical problem solving across 14 sub-disciplines.

Marketing analytics - UTM, attribution, CAC, ROAS, conversion tracking.

Search Mathlib for lemmas by type signature pattern using Loogle.

k6 script templates, load profiles, response time thresholds, SLO validation, and performance testing strategies.

KVKK and GDPR compliance patterns - consent management, right to erasure, breach notification, audit logging, cookie consent, and data classification.