Marketplace

Design statistically rigorous A/B tests: hypothesis formation, sample size calculation, metric selection, and guardrail setup.

Design event-driven systems: event schema design, broker selection, idempotency, ordering guarantees, and event sourcing.

Audit error handling across a codebase: unhandled rejections, swallowed exceptions, missing retries, and inconsistent error types.

Design and implement design systems: token architecture, component APIs, documentation patterns, and governance.

Manage API and feature deprecations safely: sunset timelines, migration guides, usage tracking, and forced upgrade paths.

Find and safely remove dead code: unreachable branches, unused exports, orphaned files, and stale configuration.

Design data governance frameworks: data classification, lineage tracking, access policies, retention, and compliance mapping.

Design ergonomic component APIs: prop design, composition patterns, accessibility defaults, and forward compatibility.

Conduct systematic competitor analysis: feature matrices, positioning maps, moat assessment, and strategic gap identification.

Create comprehensive onboarding documentation for any codebase: architecture maps, data flow diagrams, and gotchas for new developers.

Use when reviewing a diff, PR, or staged changes: a five-pass protocol that yields severity-ranked findings with concrete failure cases.

Analyze customer churn: cohort analysis, churn signals, at-risk scoring, retention experiments, and win-back strategies.

Design WebSocket and real-time communication systems: connection management, reconnection, message protocols, and scaling.

Design rate limiting strategies for APIs: token bucket, sliding window, per-user limits, and 429 response patterns.

Design API products: endpoint design for developer experience, versioning strategy, rate tiers, and ecosystem growth.

Use when API reference docs must be generated or updated from source code, with verified schemas, runnable examples, and complete error catalogs.

Generate and run contract tests for REST and GraphQL APIs from OpenAPI specs or schema definitions.

Design cohesive animation systems: motion principles, timing curves, choreography rules, and accessible motion.

Manage AI agent products: capability roadmaps, eval-driven development, safety reviews, user trust, and launch criteria.

Audit codebases for i18n readiness: hardcoded strings, locale formatting, RTL support, pluralization rules, and translation workflow.

Manage Drupal in all popular forms: drush CLI, REST/JSON:API, module management, content types, Views, performance caching, and security hardening.

Design micro-frontend architectures: module federation, route splitting, shared dependencies, and team boundaries.

Audit UIs against WCAG 2.2 AA and deliver prioritized, code-level fixes. Use when asked for an accessibility review, a11y compliance, or AT bug reports.

Invoke when an autonomous task may outlast one context window—persist resumable checkpoints to a state file so work survives resets and interruptions.