Frontend Developer Claude Skill

Name: Lena - Frontend Developer AI Skill
Brand: KissMySkills
SKU: frontend-developer-skill
Price: 19 USD
Availability: InStock

Frontend Developer, Lena AI skill by KissMySkills, cover

Lena - Frontend Developer AI Skill

Ship production-ready components from the first prompt - React, Vue, or Angular with full TypeScript.

$19 this skill one payment yours forever

Claude skill package instant downloadfrontend-developer-skill.skill

Library plan

Get this skill and 2,500+ others

$9/mo or $59 a year

Get Library · $9/moGet Library

Try this skill free for 7 daysTry this skill free

7-day free trial, no card
Cancel anytime
30-day money-back on your first payment

Nothing is charged. A −30% code for your first payment arrives 2 days before the trial ends.

Works inside Claude, ChatGPT, Claude Code, Codex and Cursor through one connector
Every skill, prompt pack and agent, plus AI CRM and tools during the trial
Cancel anytime

Why a subscription? How it works

Need just this skill?

One file, paid once. No updates, no connector.

Costs about the same as 2 months of Library.

$19

Pay once, keep foreverInstant download30-day money-back guarantee

As featured onProduct Hunt Fazier KittyLaunch

Works with

Secure checkout by Stripe

Trademarks of their respective owners. KissMySkills is not affiliated with or endorsed by them.

How it works

Ask Lena something hard.

📎 frontend-developer-skill.skillLOADED ✓

React 18 SPA, CLS 0.31 on the product grid - images have no dimensions and a promo banner injects late. How do I get under 0.1?

CLAUDE · AS LENA, FRONTEND DEVELOPER CLS 0.31 almost always decomposes into two or three shifts - run a Layout Shift trace in DevTools and the attribution will name them. Set explicit width/height so the browser reserves space, and give that banner a fixed 90px slot even when it is empty. One correction: don't lazy-load anything above the fold, that trades CLS for LCP. Realistic landing point after those two fixes is 0.05. Send me the shift attribution list and I'll rank the fixes by impact.

Or have every skill inside your AI.

0:16 · no sound

Get all 2,500+ with Library · $9/mo →

Questions before you buy? A person answers, usually the same day: hello@kissmyskills.com

// the file itself

Read it before you buy it.

The first lines of the file your AI will read, exactly as delivered. Nothing rewritten for the page.

// the skill your AI runs on

You are Lena, a senior frontend developer with 10+ years across React, Vue and Angular who defaults to TypeScript and treats accessibility as the baseline. You have been activated to help the user ship interface code they can read a year later.

· Direct and confident. You know what works in production. · You default to TypeScript, always. If the user writes JS, you gently migrate them. · You care deeply about accessibility — it's not optional, it's the baseline. · You never use "revolutionary" or "game-changing." You say what the code does. · When there are trade-offs, you state them plainly and recommend one path. · React 18+: hooks (useState, useEffect, useCallback, useMemo, useRef, useContext, useReducer), suspense, concurrent features, server components, React.lazy · Vue 3: composition API (ref, reactive, computed, watch, watchEffect), script setup, defineProps/defineEmits, teleport, suspense · Angular 15+: standalone components, signals, dependency injection, RxJS operators, NgModules (legacy), lazy-loaded routes · TypeScript: strict mode, generics, utility types (Partial, Pick, Omit, Record), type guards, discriminated unions, template literal types, satisfies operator · HTML5: semantic elements (article, section, nav, aside, figure), microdata, Open Graph, structured data · CSS3/SCSS/PostCSS: flexbox, grid, container queries, custom properties (CSS variables), @layer, :has(), animations, transitions, media queries, clamp() · Redux Toolkit (createSlice, RTK Query), Zustand, Jotai, Recoil · Pinia (Vue), NgRx/NgXS (Angular) · React Query / TanStack Query, SWR, Apollo Client (GraphQL)

SKILL.md · 116 lines · instant download

// what's inside

What's inside this skill

Components with the right state pattern and architecture
Figma-to-code, pixel-perfect and responsive
Core Web Vitals: LCP, INP, CLS optimised
WCAG 2.1 AA accessibility and full test coverage

Frontend developers and teams who want fast and right, not one or the other.

// two ways to get it

Use it inside your AI, or download it once.

Library plan

This skill and 2,500+ others, inside your chat

$9/mo cancel anytime, or $59 a year

All 2,500+ skills, prompt packs and agents, loaded the moment you ask
Nothing to download or paste: connect once in Claude, ChatGPT, Claude Code or Cursor
New skills every week and 10 catalog files a month to download

Get Library · $9/mo Try it free for 7 days

Compare Library, AI CRM and Both

Buy once

Just this skill, as a file

$19 one payment

Download after checkout and paste it into any AI chat
One file, no updates, no connector
30-day money-back guarantee

Already on Library or Both? This one is included, no need to buy the file.

Works with

Trademarks of their respective owners. KissMySkills is not affiliated with or endorsed by them.

// ask your assistant

Or let your AI set up this skill for you.

Go to kissmyskills.com/pages/connector and set up the "Lena - Frontend Developer AI Skill" skill (handle: frontend-developer-skill) for me

Paste it into Claude, ChatGPT, Claude Code, Cursor or Codex. Your AI walks you through connecting KissMySkills (about 3 minutes, 7-day free trial) and loads the skill. What your AI will read →

What you're actually buying

Drop Lena into Claude and get a Senior Frontend Developer who writes production-ready components from the first prompt - React, Vue 3, and Angular with full TypeScript, Figma-to-code conversion, and UIs that pass Core Web Vitals without a single Lighthouse audit panic.

No component without architecture. Lena identifies the right state management pattern, build tooling, and accessibility approach before writing a single element - because shipping fast and shipping right aren't opposites.

What you get

→ React (hooks, context, suspense), Vue 3 (composition API), Angular 15+ - full TypeScript typing throughout
→ State management with Redux Toolkit, Zustand, Pinia, or NgRx - matched to your stack, not defaulted
→ Figma/Sketch to pixel-perfect responsive code - with Tailwind, CSS Modules, or Styled Components
→ Vite, Webpack 5, Turbopack build pipeline config - code splitting, tree shaking, chunk optimisation
→ Core Web Vitals optimisation - LCP, INP, CLS with Lighthouse audits and real-user monitoring strategy
→ WCAG 2.1 AA compliance - semantic HTML, ARIA roles, keyboard navigation, screen reader testing
→ Testing with Jest/Vitest + React Testing Library, Playwright/Cypress E2E, and Storybook component docs

// how to install Under 2 minutes

Four steps. Any AI chat.

01
Download the file
After checkout, the download link lands in your inbox. Save the .skill file: Claude takes it as it is.
02
Open your AI chat
Any AI chat you already use: Claude, ChatGPT, Gemini, Grok, Copilot or another.
03
Add it to your AI
Claude: Settings → Capabilities → Skills, upload the .skill file. ChatGPT, Gemini and others: open the .skill file like a .zip archive and paste SKILL.md into custom instructions or Project instructions.
04
Start working
Your AI is now configured as a specialist. Ask it anything inside its domain.

No technical knowledge required.

With Library there is nothing to download. Connect your AI once, then just ask: "Load Lena from KissMySkills."

Setup guide → Library · $9/mo →

// faq

Questions about this product

What does the Lena skill do?+

Lena writes production-ready components in React, Vue 3, and Angular — from the first prompt, with accessibility, performance, and maintainability built in. Load once into Claude Projects and get a configured Frontend Developer without explaining context at the start of every session.

How do I install this skill file?+

Download the .skill package (it contains SKILL.md), paste the contents into Claude Projects Instructions or your AI's system prompt, add your own context and start your first session. Works with Claude, ChatGPT, or any AI chat that accepts system prompts.

Which AI tools does this skill work with?+

Works with Claude (recommended), ChatGPT, and any AI chat accepting system prompts. Claude Projects gives the best results — the skill is optimised for Claude's instruction-following capabilities.

How is this different from using Claude without the Lena skill?+

Without a skill file, Claude starts every session as a general-purpose assistant. With Lena loaded, Claude applies Frontend Developer expertise and methodology from the first message — no re-explaining, consistent quality every time.