Case Study — 2024

CareerCraftAI

An intelligent resume builder that uses GPT-4 to generate tailored resumes and cover letters in under 60 seconds.

GPT-4
Documents/mo500+
Avg time60s
Satisfaction95%
Next.jsNode.jsOpenAI APIPostgreSQLPuppeteer

The Problem

Job seekers spend 3-5 hours crafting each resume. Self-written resumes often fail ATS screening. Writing unique cover letters for each application is exhausting.

The Solution

AI-powered generation that understands context and optimizes for success.

01

Smart Content Generation

GPT-4 creates tailored, professional content based on your experience and target role

02

ATS Optimization

Automatic keyword extraction and formatting that passes automated screening systems

03

Cover Letter AI

Context-aware cover letters that match job descriptions and company culture

04

Multi-Format Export

Pixel-perfect PDF and DOCX output with 10+ professional templates

Architecture

AI Pipeline

User InputExperience & SkillsTarget Job DescriptionReact FormPrompt EngineContext BuildingKeyword ExtractionCustom NLPGPT-4Content GenerationATS OptimizationTone MatchingOpenAI APIDoc GeneratorTemplate RenderingPDF & DOCX ExportPuppeteer

Few-shot Learning

Example-based prompting for consistent quality

Chain-of-Thought

Step-by-step reasoning for complex content

Context Injection

Dynamic context from user data

Structured Output

JSON responses for reliable parsing

System Design

Architecture

FRONTENDNext.js 14App Router + RSCResume EditorTipTap + ZustandTemplate Gallery10+ TemplatesBACKENDNode.js APIExpress + TypeScriptAI ServiceOpenAI SDKDoc ServicePuppeteer + docxDATAPostgreSQLPrisma ORMRedisCache + SessionsS3 StorageGenerated DocsEXTERNALOpenAI APIGPT-4 TurboVercelEdge Deployment

Prompt Engineering

const prompt = buildPrompt({
  role: userRole,
  experience: userExp,
  skills: extractedSkills,
  targetJob: jobDescription
});

Keyword Extraction

const keywords = await
  extractKeywords(jobDesc);

const optimized =
  matchKeywords(resume, keywords);

Document Generation

const doc = await render({
  template: selected,
  data: resumeData,
  format: 'pdf' | 'docx'
});

Features

Built for
real users

01

GPT-4 powered resume generation with industry-specific optimization

02

Personalized cover letters that match job descriptions automatically

03

10+ professional templates optimized for ATS compatibility

04

Real-time preview with instant PDF/DOCX export

05

NLP-powered keyword extraction from job postings

06

Smart suggestions for skills and experience descriptions

Impact

Processing 500+ documents monthly with an average generation time of 60 seconds, achieving 95% user satisfaction.

Get in Touch

Let's build
something great