# Job Skill Enhancement System

## CORE INSTRUCTION:
You are an AI that extracts and identifies coding languages and frameworks from job descriptions. Your goal is to find ALL relevant technical skills mentioned in the job posting, even if they're mentioned in different ways or aliases.

## INPUT DATA:
{
  "job": {"job_id":4101,"title":"Senior frontend developer","company_name":"Waitly","description":"About the job\n\n🚀 Senior Frontend Developer at Waitly\n\nCopenhagen or Nykøbing F - Full-time\n\nDo you want to take ownership of the frontend in a fast-growing SaaS product and set new standards for quality, performance, and user experience?\n\nWaitly is Denmark’s leading platform for waiting lists in housing. We work with more than 500 housing organizations, serve over 100,000 users, and manage more than 200,000 subscriptions - and we are just getting started. Our ambition is to scale across Europe with an office in Berlin too, and we need you to raise the bar for our frontend.\n\n🎯 Your role\n\nResponsibilities\n\nAs a Senior Frontend Developer, you will take ownership of our frontend and set higher standards for quality and maintainability. Your responsibilities include:\n\n\nBuilding features in NuxtJS, VueJS, Tailwind, and DatoCMS.\nImplementing designs from Figma into code that works in practice.\nTurning sketches and ideas into great solutions by using existing components creatively.\nEnsuring frontend performance and SEO best practices are always considered.\nCollaborating closely with our CTO and backend developers to integrate APIs and data flows.\nHelping shape structure and component reuse in the frontend for long-term maintainability.\nLeveraging AI in your daily workflow – from speeding up implementation and testing to improving component reuse, accessibility, and performance.\n\n\nThis role is for an experienced developer who enjoys working both independently and as part of a small team. You will be the go-to person for frontend and have a big impact on the look and feel of our platform.\n\n🛠 Our tech stack\n\nFrontend\n\n\nNuxtJS, Nuxt UI, VueJS, Tailwind\nDatoCMS\nHosting: Netlify + AWS\n\n\nBackend\n\n\nLaravel \/ PHP, NodeJS\nMySQL\nHosting: AWS\n\n\nMicroservices & integrations\n\nWe work with microservices. This includes separate products (Website, B2C portal and B2B portal) and services for special functions (data transformation, integrations hub, etc.). We also integrate with a variety of external systems within payments, data, and communication (newsletter, CRM, etc.).\n\n🔍 We Are Looking For Someone Who\n\n\nHas strong experience with frontend development (NuxtJS\/VueJS, Tailwind, DatoCMS or similar).\nCan implement designs from Figma into code with high quality.\nCan work with sketches and ideas, building solid solutions with existing components.\nTakes responsibility for frontend performance and SEO.\nUnderstands backend concepts and can collaborate closely with backend colleagues.\nIs proactive, structured, and focused on building maintainable solutions.\nAlready has senior-level experience and is eager to grow further.\nUses AI tools as a natural part of your frontend process and is curious about experimenting with new ways to boost quality and efficiency. We will ask to see use case on this.\n\n\n🤝 Workplace & culture\n\nYou will be based at either our office in Copenhagen or Nykøbing F, where we work closely together as a team. Both offices are within a 10-minute walk from the nearest station.\n\nWe offer flexibility to combine office and remote work. We care more about progress and solutions than about fixed hours.\n\nWe value an informal culture with short distance from idea to action. You will join a team where we challenge each other professionally but also enjoy working together.\n\n💡 What We Offer\n\n\nA central role in a scaleup on the path to international expansion.\nResponsibility for frontend standards, performance, and user experience.\nClose collaboration with the CTO and backend developers to build great solutions together.\nA competitive compensation package with the possibility of warrants..\nThe opportunity to push the boundaries of AI in frontend development, and shape how we use AI to deliver faster and smarter user experiences.","brief_summary_of_job":null,"existing_skills_from_job":["Hybrid","Full-time","DKK40K\/yr - DKK55K\/yr","Back-End Web Development","HTML","Tailwind CSS","Microservices","Amazon Web Services (AWS)","Object-Oriented Programming (OOP)","HTML5","MySQL","XML","JavaScript"],"existing_skills_from_database":[]},
  "coding_categories": {"languages":["Bash","C","C#","C++","CSS","Clojure","Dart","Elixir","Go","Groovy","Haskell","HTML","Java","JavaScript","Julia","Kotlin","Lua","MATLAB","Objective-C","Perl","PHP","PowerShell","Python","R","Ruby","Rust","Sass","Scala","SQL","Swift","TypeScript"],"frameworks":[".NET","Angular","Apache Spark","ASP.NET","AWS","Azure","Backbone.js","Bootstrap","CodeIgniter","Django","Docker","Ember.js","Express","FastAPI","Flask","Flutter","GCP","Hadoop","Ionic","jQuery","Kubernetes","Laravel","Meteor","NestJS","Next.js","Node.js","Nuxt.js","Phoenix","PyTorch","React","React Native","Ruby on Rails","Spring Boot","Svelte","Symfony","Tailwind CSS","TensorFlow","Vue.js","Xamarin"]},
  "skill_aliases": {"bash":"Bash","c":"C","c plus plus":"C++","C plus plus":"C++","c sharp":"C#","C sharp":"C#","c#":"C#","c++":"C++","clojure":"Clojure","cpp":"C++","dart":"Dart","elixir":"Elixir","go":"Go","golang":"Go","Golang":"Go","groovy":"Groovy","haskell":"Haskell","java":"Java","java script":"JavaScript","Java script":"JavaScript","javascript":"JavaScript","Javascript":"JavaScript","js":"JavaScript","JS":"JavaScript","es5":"JavaScript","ES5":"JavaScript","es6":"JavaScript","ES6":"JavaScript","julia":"Julia","kotlin":"Kotlin","lua":"Lua","matlab":"MATLAB","Matlab":"MATLAB","objective c":"Objective-C","Objective C":"Objective-C","objective-c":"Objective-C","objc":"Objective-C","ObjC":"Objective-C","obj-c":"Objective-C","Obj-C":"Objective-C","perl":"Perl","php":"PHP","Php":"PHP","powershell":"PowerShell","Power Shell":"PowerShell","python":"Python","py":"Python","Py":"Python","phyton":"Python","r":"R","ruby":"Ruby","rust":"Rust","scala":"Scala","swift":"Swift","typescript":"TypeScript","Typescript":"TypeScript","ts":"TypeScript","TS":"TypeScript","mysql":"MySQL","postgresql":"PostgreSQL","postgres":"PostgreSQL","mongodb":"MongoDB","mongo":"MongoDB","redis":"Redis","sqlite":"SQLite","oracle":"Oracle","mssql":"SQL Server","sql server":"SQL Server","aws":"AWS","amazon web services":"AWS","azure":"Azure","microsoft azure":"Azure","gcp":"GCP","google cloud platform":"GCP","google cloud":"GCP",".Net":".NET","angular":"Angular","angular js":"Angular","Angular js":"Angular","angularjs":"Angular","AngularJS":"Angular","apache spark":"Apache Spark","asp net":".NET","ASP net":".NET","asp.net":"ASP.NET","ASP.NET":".NET","asp.net core":".NET","ASP.NET Core":".NET","backbone":"Backbone.js","BackboneJS":"Backbone.js","backbone js":"Backbone.js","backbonejs":"Backbone.js","bootstrap":"Bootstrap","Bootstrap framework":"Bootstrap","twitter bootstrap":"Bootstrap","Twitter Bootstrap":"Bootstrap","code igniter":"CodeIgniter","codeigniter":"CodeIgniter","django":"Django","ember":"Ember.js","ember js":"Ember.js","emberjs":"Ember.js","EmberJS":"Ember.js","express":"Express","express.js":"Express","Express.js":"Express","expressjs":"Express","ExpressJS":"Express","fast api":"FastAPI","Fast api":"FastAPI","fastapi":"FastAPI","flask":"Flask","flutter":"Flutter","hadoop":"Hadoop","Hadoop":"Hadoop","ionic":"Ionic","Ionic framework":"Ionic","ionic framework":"Ionic","jquery":"jQuery","JQuery":"jQuery","JQUERY":"jQuery","laravel":"Laravel","meteor":"Meteor","meteor js":"Meteor","meteorjs":"Meteor","MeteorJS":"Meteor","nestjs":"NestJS","nest js":"NestJS","Nest JS":"NestJS","Nestjs":"NestJS","next js":"Next.js","Next js":"Next.js","next.js":"Next.js","nextjs":"Next.js","NextJS":"Next.js","node":"Node.js","Node":"Node.js","node.js":"Node.js","nodejs":"Node.js","NodeJS":"Node.js","nuxt js":"Nuxt.js","Nuxt js":"Nuxt.js","nuxt.js":"Nuxt.js","nuxtjs":"Nuxt.js","NuxtJS":"Nuxt.js","phoenix":"Phoenix","Phoenix framework":"Phoenix","pytorch":"PyTorch","Pytorch":"PyTorch","torch":"PyTorch","Torch":"PyTorch","react":"React","react.js":"React","React.js":"React","reactjs":"React","ReactJS":"React","react native":"React Native","ReactNative":"React Native","reactnative":"React Native","rn":"React Native","RN":"React Native","rails":"Ruby on Rails","Rails":"Ruby on Rails","ror":"Ruby on Rails","ROR":"Ruby on Rails","ruby on rails":"Ruby on Rails","Ruby On Rails":"Ruby on Rails","spark":"Apache Spark","Spark":"Apache Spark","spring":"Spring Boot","Spring":"Spring Boot","spring boot":"Spring Boot","Spring Boot":"Spring Boot","spring framework":"Spring Boot","Spring Framework":"Spring Boot","SpringBoot":"Spring Boot","springboot":"Spring Boot","svelte":"Svelte","symfony":"Symfony","tailwind":"Tailwind CSS","Tailwind":"Tailwind CSS","tailwind css":"Tailwind CSS","Tailwind Css":"Tailwind CSS","tailwindcss":"Tailwind CSS","TailwindCSS":"Tailwind CSS","tensorflow":"TensorFlow","Tensorflow":"TensorFlow","tensor flow":"TensorFlow","vue js":"Vue.js","vue.js":"Vue.js","vuejs":"Vue.js","VueJS":"Vue.js","xamarin":"Xamarin","Xamarin Forms":"Xamarin","Xamarin.forms":"Xamarin","docker":"Docker","kubernetes":"Kubernetes","k8s":"Kubernetes","github":"GitHub","gitlab":"GitLab","bitbucket":"Bitbucket","terraform":"Terraform","puppet":"Puppet","chef":"Chef","scrum":"Scrum","agile":"Agile","kanban":"Kanban","devops":"DevOps","ci\/cd":"CI\/CD","tdd":"TDD","bdd":"BDD","linux":"Linux","windows":"Windows","macos":"macOS","ubuntu":"Ubuntu","centos":"CentOS","debian":"Debian","junit":"JUnit","pytest":"PyTest","jest":"Jest","mocha":"Mocha","cypress":"Cypress","selenium":"Selenium","html":"HTML","HTML":"HTML","html5":"HTML","HTML5":"HTML","css":"CSS","CSS":"CSS","css3":"CSS","CSS3":"CSS","sass":"Sass","scss":"Sass","SCSS":"Sass","less":"Less","LESS":"Less","webpack":"Webpack","gulp":"Gulp","npm":"npm","yarn":"Yarn","sql":"SQL","vue":"Vue.js","full time":"Fuldtid","full-time":"Fuldtid","fuldtid":"Fuldtid","part time":"Deltid","part-time":"Deltid","deltid":"Deltid","contract":"Kontrakt","kontrakt":"Kontrakt","remote":"Fjernarbejde","fjernarbejde":"Fjernarbejde","hybrid":"Hybridarbejde","hybridarbejde":"Hybridarbejde","on-site":"Fysisk tilstedeværelse","onsite":"Fysisk tilstedeværelse","fysisk tilstedeværelse":"Fysisk tilstedeværelse"}
}

## TASK:
1. **Extract ALL coding languages and frameworks** mentioned in the job description
2. **Use the skill_aliases mapping** to normalize skill names (e.g., "JS" → "JavaScript", "React.js" → "React")
3. **Only include skills from the coding_categories** (languages and frameworks)
4. **Avoid duplicates** - if "JavaScript" and "JS" are both mentioned, only include "JavaScript"
5. **Be thorough** - look for skills mentioned in:
   - Job title
   - Job description
   - Brief summary
   - Requirements sections
   - Nice-to-have sections

## SKILL CATEGORIES TO EXTRACT:
- **Languages**: JavaScript, Python, Java, C#, PHP, Go, Rust, etc.
- **Frameworks**: React, Angular, Vue.js, Laravel, Django, Spring Boot, etc.

## EXCLUSION RULES:
- Do NOT include soft skills (communication, teamwork, etc.)
- Do NOT include methodologies (Agile, Scrum, etc.)
- Do NOT include general tools (Git, VS Code, etc.) unless they're specifically coding-related
- Do NOT include skills already in existing_skills_from_database

## OUTPUT FORMAT:
Return ONLY valid JSON in this exact structure:
{
  "job_id": <integer>,
  "extracted_skills": [
    {
      "skill_name": "<normalized_skill_name>",
      "category": "<languages|frameworks>",
      "confidence": <integer 0-100>,
      "mentioned_as": ["<original_mention_1>", "<original_mention_2>"],
      "context": "<brief_context_where_found>"
    }
  ],
  "reasoning": {
    "total_skills_found": <integer>,
    "skills_by_category": {
      "languages": ["<skill1>", "<skill2>"],
      "frameworks": ["<skill1>", "<skill2>"]
    },
    "duplicates_removed": ["<original_mention> → <normalized_name>"],
    "excluded_skills": ["<skill>", "<reason>"]
  },
  "confidence": <integer 0-100>
}

Return nothing outside the JSON object.

{
  "job_id": 4101,
  "extracted_skills": [
    {
      "skill_name": "JavaScript",
      "category": "languages",
      "confidence": 100,
      "mentioned_as": ["JavaScript", "js", "JS"],
      "context": "Building features in NuxtJS, VueJS, Tailwind, and DatoCMS."
    },
    {
      "skill_name": "PHP",
      "category": "languages",
      "confidence": 100,
      "mentioned_as": ["PHP"],
      "context": "Backend: Laravel / PHP"
    },
    {
      "skill_name": "Vue.js",
      "category": "frameworks",
      "confidence": 100,
      "mentioned_as": ["VueJS", "Vue.js", "vue"],
      "context": "Building features in NuxtJS, VueJS, Tailwind, and DatoCMS."
    },
    {
      "skill_name": "Nuxt.js",
      "category": "frameworks",
      "confidence": 100,
      "mentioned_as": ["NuxtJS", "nuxt.js", "nuxtjs"],
      "context": "Building features in NuxtJS, VueJS, Tailwind, and DatoCMS."
    },
    {
      "skill_name": "Tailwind CSS",
      "category": "frameworks",
      "confidence": 100,
      "mentioned_as": ["Tailwind", "Tailwind CSS", "tailwind css", "tailwindcss"],
      "context": "Building features in NuxtJS, VueJS, Tailwind, and DatoCMS."
    },
    {
      "skill_name": "Laravel",
      "category": "frameworks",
      "confidence": 100,
      "mentioned_as": ["Laravel"],
      "context": "Backend: Laravel / PHP"
    },
    {
      "skill_name": "MySQL",
      "category": "languages",
      "confidence": 100,
      "mentioned_as": ["MySQL"],
      "context": "Backend: MySQL"
    }
  ],
  "reasoning": {
    "total_skills_found": 7,
    "skills_by_category": {
      "languages": ["JavaScript", "PHP", "MySQL"],
      "frameworks": ["Vue.js", "Nuxt.js", "Tailwind CSS", "Laravel"]
    },
    "duplicates_removed": [],
    "excluded_skills": []
  },
  "confidence": 100
}