Shapes algorithm optimization strategy across company's entire Vue ecosystem. Researches and introduces advanced approaches — incremental computation, WASM-accelerated computations, virtual DOM optimization.
Roles · Frontend Developer (Vue) · Principal
What a Principal } should know
36 core skills, 52 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, Frontend Development, API & Integration.
Core skills for a Principal
Grouped by area. The label on the right is the expected depth: Awareness, Working, Advanced or Expert.
Programming Fundamentals · 6
Shapes async architecture strategy for Vue ecosystem — real-time updates, WebSocket integration, service worker orchestration. Researches and introduces advanced streaming and partial hydration approaches in Nuxt.
Shapes code quality strategy across organizational Vue ecosystem. Introduces automated analysis systems — bundle analysis, dead code detection, dependency audit with Vite and Nuxt pipeline integration.
Shapes data management strategy at the company's Vue application ecosystem level. Designs client-side data structure synchronization systems with server state, including CRDT and event sourcing patterns.
Shapes architectural pattern strategy for the entire company's Vue ecosystem. Researches and adapts advanced patterns — Islands Architecture, Resumability (Qwik-approach), server components for Nuxt.
Shapes type safety architecture for the entire Vue ecosystem — shared types between services, code generation from OpenAPI, automated type compatibility checks between Vue micro-frontends.
Frontend Development · 18
Shapes bundle optimization strategy for the company's Vue ecosystem — shared chunks between micro-frontends, CDN strategies, edge-side rendering. Researches and introduces new approaches — module preload, import maps, Rolldown.
Shapes component testing strategy for the company's Vue ecosystem — shared test utilities, cross-team testing patterns, design system integration. Researches new approaches — component-level E2E, AI-assisted test generation.
Shapes web performance strategy for Vue ecosystem — monitoring automation, metric correlation with business KPIs. Researches new metrics (INP, Smoothness) and architectural approaches to their optimization in Vue/Nuxt.
Defines styling strategy for company's Vue ecosystem — zero-runtime CSS-in-JS through UnoCSS, atomic CSS approach with Tailwind, design token integration. Researches and introduces advanced approaches — CSS Layers, Container Queries, View Transitions API in Vue components.
Shapes data fetching strategy for Vue ecosystem — GraphQL vs REST, edge caching, real-time sync between applications. Researches and introduces server components, hybrid rendering and streaming SSR patterns in Nuxt.
Shapes design system strategy for the company's Vue application ecosystem — multi-brand support, cross-framework compatibility through Web Components, federated design system for micro-frontends.
Shapes CSS strategy for the organization's Vue ecosystem — evaluation of styling approaches, design token integration, progressive enhancement. Researches and introduces new CSS capabilities — @scope, nesting, scroll-driven animations.
Defines strategic Nuxt 3 infrastructure evolution for the company — custom Nuxt module development, Nitro server optimization, multi-tenant SSR architecture. Contributes to Nuxt ecosystem, shapes standards for Nuxt Layers and Islands Architecture.
Shapes PWA strategy for company's Vue ecosystem — multi-platform deployment, advanced caching, native API integration. Researches Project Fugu APIs and Web Push for extending Vue application capabilities.
Shapes rendering strategy for company's Vue ecosystem — edge computing through Nitro, Islands Architecture, partial hydration. Researches and introduces Server Components, Resumability and other advanced rendering patterns.
Shapes state management strategy for Vue ecosystem — shared state between micro-frontends, event-driven architecture, CQRS. Researches signal-based reactivity, atomic stores and other state management evolutions.
Shapes utility-first CSS strategy for organizational Vue ecosystem — Tailwind vs UnoCSS evaluation, atomic CSS optimization, design system integration. Researches new styling approaches — CSS Anchor Positioning, Scroll-driven Animations.
Shapes visual testing strategy for company's Vue ecosystem — cross-project baseline, automated UI consistency monitoring. Researches AI-powered visual testing and approaches to reducing flaky tests.
Shapes build tooling strategy for company's Vue ecosystem — Vite vs Turbopack evaluation, plugin ecosystem contribution, build unification. Researches Rolldown, Module Federation 2.0 and other bundling evolutions.
Shapes Vue architecture evolution strategy at organizational level — custom renderers, compiler macros, virtual DOM optimization. Influences Vue ecosystem through RFC process, researches and introduces Vapor Mode and other experimental Vue capabilities.
Shapes accessibility strategy for company's Vue ecosystem — governance, compliance monitoring, design system integration. Influences ecosystem through improving a11y tooling for Vue development.
Shapes Web API usage strategy for Vue ecosystem — new API evaluation (WebGPU, WebCodecs), shared composable creation, abstraction standardization across teams and applications.
Shapes cross-framework strategy through Web Components — interoperability between Vue and other frameworks, micro-frontend integration. Researches Declarative Shadow DOM, CSS Scope and other standard evolutions.
API & Integration · 2
Shapes GraphQL strategy for company's Vue ecosystem — federated graph, schema registry, REST migration. Researches and introduces new approaches — GraphQL over HTTP, defer/stream directives, Relay-style pagination.
Shapes API architecture strategy for Vue ecosystem — BFF patterns through Nuxt Nitro, API gateway, versioning strategy. Defines inter-service communication and micro-frontend backend integration standards.
Cloud & Infrastructure · 1
Shapes containerization strategy for Vue ecosystem — Kubernetes orchestration, service mesh for micro-frontends, edge deployment. Optimizes infrastructure for SSR workloads with auto-scaling and zero-downtime deploys.
DevOps & CI/CD · 1
Shapes DevOps strategy for company's Vue ecosystem — platform engineering, developer experience metrics, deployment automation. Researches and introduces progressive delivery, feature flags and A/B testing infrastructure.
Testing & QA · 3
Shapes the organization's accessibility testing strategy across Vue and frontend ecosystems, embedding WCAG compliance as a first-class quality dimension. Drives innovation in Vue accessibility tooling including compile-time template a11y analysis, automated assistive technology regression frameworks, and production accessibility monitoring dashboards. Influences Vue community accessibility standards through ecosystem contributions and developer education initiatives.
Shapes E2E testing strategy for company's Vue ecosystem — shared test infrastructure, cross-service testing, contract testing. Researches optimization approaches — test impact analysis, intelligent test selection, distributed execution.
Shapes unit testing strategy for company's Vue ecosystem — shared test infrastructure, cross-project test patterns. Researches and introduces new approaches — property-based testing, mutation testing, AI-assisted test generation for Vue.
AI-Assisted Development · 2
Shapes AI-augmented Vue development strategy for the organization — tool evaluation, ROI measurement, custom fine-tuning. Explores AI automation possibilities — code generation, testing, accessibility checking, performance optimization.
Shapes GitHub Copilot strategy for company's Vue ecosystem — enterprise deployment, security review, custom model training. Evaluates AI tool ROI, defines organizational AI-assisted Vue development standards.
Version Control & Collaboration · 2
Shapes code review culture for company's Vue ecosystem — cross-team reviews, architecture review board, knowledge sharing. Defines processes for large-scale changes — RFC, ADR, migration review for Vue platform.
Shapes version control strategy for Vue ecosystem — monorepo vs polyrepo, dependency management between Vue packages. Designs infrastructure — automated migrations, cross-repo dependency updates, release orchestration.
Performance Engineering · 1
Shapes performance engineering strategy for Vue ecosystem — performance culture, automated optimization, business impact correlation. Researches and introduces predictive performance analysis and AI-assisted optimization for Vue/Nuxt.
Additional skills
Not assessed by the team, but part of the self-assessment and the development plan.
} in the open competency matrix: 52 skills across 5 levels. The matrix is free for individuals and stays free.