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AI SaaS & Career TechProduction • 27% Faster Loads
CareerKor Platform
AI-powered career platform with a real-time resume editor, ATS scoring engine, and server-rendered marketing pages.
Jr. Frontend Engineer
Jul 2025 – Feb 2026
Page Load Reduction27%
Next.js data-fetching + selective client state
Engine Performance<16ms
Resume editor render time per keystroke
Avg. Score Lift+35%
ATS score improvement per resume
Overview
CareerKor is an AI-driven career platform focused on ATS Optimization — making sure a resume is not just human-readable, but machine-optimized for the systems that filter candidates first. I owned the frontend of the resume editor and the public marketing pages end-to-end, from API contract to rendered UI.
Key Features
Real-time resume editor with normalized Redux Toolkit state (sub-16ms re-renders)
AI suggestion engine with debounced validation hooks
Dynamic PDF generation pipeline via Puppeteer + CSS print media
Role-based authentication and user progress dashboard
OpenAI GPT-4 integration for granular resume suggestions
What Changed for the User
- Shipped to production with 500+ organic monthly users
- Cut page load time by 27% via Next.js data-fetching and selective client state
- Achieved 95+ Lighthouse accessibility scores on all core pages
Technical Challenges
Managing complex, nested resume state (education, experience, skills) without typing lag during AI scoring.
Resolution
Normalized the Redux store so lookups are O(1) and update cycles stay sub-16ms, even with debounced AI validation running in parallel.Generating pixel-perfect PDFs that real ATS vendors can actually parse.
Resolution
Built a server-side Puppeteer pipeline with print-specific CSS that produces selectable, structured text — not an image — so ATS parsers can read it.