Generating personalized cold emails was tricky — we had to balance professional tone, relevance to recruiters, and natural-sounding language.

Mapping resume content to different job roles required dynamic templates and smart keyword injection, which took time to fine-tune.

Ensuring ATS compatibility meant constantly testing resume formats against various parser tools.

Extracting and interpreting user data for job matching and career guidance needed precise NLP models.

Integrating all modules smoothly while keeping the user experience simple was a constant design challenge.